diff options
Diffstat (limited to 'src/llvm_backend.cpp')
| -rw-r--r-- | src/llvm_backend.cpp | 11024 |
1 files changed, 11024 insertions, 0 deletions
diff --git a/src/llvm_backend.cpp b/src/llvm_backend.cpp new file mode 100644 index 000000000..520eff313 --- /dev/null +++ b/src/llvm_backend.cpp @@ -0,0 +1,11024 @@ +#include "llvm_backend.hpp" + +gb_global lbAddr lb_global_type_info_data = {}; +gb_global lbAddr lb_global_type_info_member_types = {}; +gb_global lbAddr lb_global_type_info_member_names = {}; +gb_global lbAddr lb_global_type_info_member_offsets = {}; +gb_global lbAddr lb_global_type_info_member_usings = {}; +gb_global lbAddr lb_global_type_info_member_tags = {}; + +gb_global isize lb_global_type_info_data_index = 0; +gb_global isize lb_global_type_info_member_types_index = 0; +gb_global isize lb_global_type_info_member_names_index = 0; +gb_global isize lb_global_type_info_member_offsets_index = 0; +gb_global isize lb_global_type_info_member_usings_index = 0; +gb_global isize lb_global_type_info_member_tags_index = 0; + + +struct lbLoopData { + lbAddr idx_addr; + lbValue idx; + lbBlock *body; + lbBlock *done; + lbBlock *loop; +}; + +struct lbCompoundLitElemTempData { + Ast * expr; + lbValue value; + i32 elem_index; + lbValue gep; +}; + +lbLoopData lb_loop_start(lbProcedure *p, isize count, Type *index_type=t_i32); +void lb_loop_end(lbProcedure *p, lbLoopData const &data); + +LLVMValueRef llvm_zero32(lbModule *m) { + return LLVMConstInt(lb_type(m, t_i32), 0, false); +} +LLVMValueRef llvm_one32(lbModule *m) { + return LLVMConstInt(lb_type(m, t_i32), 1, false); +} + +lbValue lb_zero(lbModule *m, Type *t) { + lbValue v = {}; + v.value = LLVMConstInt(lb_type(m, t), 0, false); + v.type = t; + return v; +} + +LLVMValueRef llvm_cstring(lbModule *m, String const &str) { + lbValue v = lb_find_or_add_entity_string(m, str); + unsigned indices[1] = {0}; + return LLVMConstExtractValue(v.value, indices, gb_count_of(indices)); +} + + +lbAddr lb_addr(lbValue addr) { + lbAddr v = {lbAddr_Default, addr}; + return v; +} + + +lbAddr lb_addr_map(lbValue addr, lbValue map_key, Type *map_type, Type *map_result) { + lbAddr v = {lbAddr_Map, addr}; + v.map.key = map_key; + v.map.type = map_type; + v.map.result = map_result; + return v; +} + + +lbAddr lb_addr_soa_variable(lbValue addr, lbValue index, Ast *index_expr) { + lbAddr v = {lbAddr_SoaVariable, addr}; + v.soa.index = index; + v.soa.index_expr = index_expr; + return v; +} + +lbAddr lb_addr_bit_field(lbValue value, i32 index) { + lbAddr addr = {}; + addr.kind = lbAddr_BitField; + addr.addr = value; + addr.bit_field.value_index = index; + return addr; +} + + +Type *lb_addr_type(lbAddr const &addr) { + if (addr.addr.value == nullptr) { + return nullptr; + } + if (addr.kind == lbAddr_Map) { + Type *t = base_type(addr.map.type); + GB_ASSERT(is_type_map(t)); + return t->Map.value; + } + return type_deref(addr.addr.type); +} +LLVMTypeRef lb_addr_lb_type(lbAddr const &addr) { + return LLVMGetElementType(LLVMTypeOf(addr.addr.value)); +} + +lbValue lb_addr_get_ptr(lbProcedure *p, lbAddr const &addr) { + if (addr.addr.value == nullptr) { + GB_PANIC("Illegal addr -> nullptr"); + return {}; + } + + switch (addr.kind) { + case lbAddr_Map: { + Type *map_type = base_type(addr.map.type); + lbValue h = lb_gen_map_header(p, addr.addr, map_type); + lbValue key = lb_gen_map_key(p, addr.map.key, map_type->Map.key); + + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = h; + args[1] = key; + + lbValue ptr = lb_emit_runtime_call(p, "__dynamic_map_get", args); + + return lb_emit_conv(p, ptr, alloc_type_pointer(map_type->Map.value)); + } + case lbAddr_BitField: { + lbValue v = lb_addr_load(p, addr); + return lb_address_from_load_or_generate_local(p, v); + } + + case lbAddr_Context: + GB_PANIC("lbAddr_Context should be handled elsewhere"); + } + + return addr.addr; +} + + +lbValue lb_build_addr_ptr(lbProcedure *p, Ast *expr) { + lbAddr addr = lb_build_addr(p, expr); + return lb_addr_get_ptr(p, addr); +} + + + +void lb_addr_store(lbProcedure *p, lbAddr const &addr, lbValue value) { + if (addr.addr.value == nullptr) { + return; + } + GB_ASSERT(value.type != nullptr); + if (is_type_untyped_undef(value.type)) { + Type *t = lb_addr_type(addr); + value.type = t; + value.value = LLVMGetUndef(lb_type(p->module, t)); + } else if (is_type_untyped_nil(value.type)) { + Type *t = lb_addr_type(addr); + value.type = t; + value.value = LLVMConstNull(lb_type(p->module, t)); + } + + + if (addr.kind == lbAddr_Map) { + lb_insert_dynamic_map_key_and_value(p, addr, addr.map.type, addr.map.key, value); + return; + } else if (addr.kind == lbAddr_BitField) { + Type *bft = base_type(type_deref(addr.addr.type)); + GB_ASSERT(is_type_bit_field(bft)); + + unsigned value_index = cast(unsigned)addr.bit_field.value_index; + i32 size_in_bits = bft->BitField.fields[value_index]->type->BitFieldValue.bits; + if (size_in_bits == 0) { + return; + } + i32 size_in_bytes = next_pow2((size_in_bits+7)/8); + + LLVMTypeRef dst_type = LLVMIntTypeInContext(p->module->ctx, size_in_bits); + LLVMValueRef src = LLVMBuildIntCast2(p->builder, value.value, dst_type, false, ""); + + LLVMValueRef internal_data = LLVMBuildStructGEP(p->builder, addr.addr.value, 1, ""); + LLVMValueRef field_ptr = LLVMBuildStructGEP(p->builder, internal_data, value_index, ""); + LLVMBuildStore(p->builder, src, field_ptr); + return; + } else if (addr.kind == lbAddr_Context) { + lbValue old = lb_addr_load(p, lb_find_or_generate_context_ptr(p)); + lbAddr next_addr = lb_add_local_generated(p, t_context, true); + lb_addr_store(p, next_addr, old); + lb_push_context_onto_stack(p, next_addr); + lbValue next = lb_addr_get_ptr(p, next_addr); + + if (addr.ctx.sel.index.count > 0) { + lbValue lhs = lb_emit_deep_field_gep(p, next, addr.ctx.sel); + lbValue rhs = lb_emit_conv(p, value, type_deref(lhs.type)); + lb_emit_store(p, lhs, rhs); + } else { + lbValue lhs = next; + lbValue rhs = lb_emit_conv(p, value, lb_addr_type(addr)); + lb_emit_store(p, lhs, rhs); + } + + return; + } else if (addr.kind == lbAddr_SoaVariable) { + Type *t = type_deref(addr.addr.type); + t = base_type(t); + GB_ASSERT(t->kind == Type_Struct && t->Struct.soa_kind != StructSoa_None); + value = lb_emit_conv(p, value, t->Struct.soa_elem); + + lbValue index = addr.soa.index; + if (!lb_is_const(index) || t->Struct.soa_kind != StructSoa_Fixed) { + Type *t = base_type(type_deref(addr.addr.type)); + GB_ASSERT(t->kind == Type_Struct && t->Struct.soa_kind != StructSoa_None); + i64 count = t->Struct.soa_count; + lbValue len = lb_const_int(p->module, t_int, count); + // lb_emit_bounds_check(p, ast_token(addr.soa.index_expr), index, len); + } + + for_array(i, t->Struct.fields) { + lbValue dst = lb_emit_struct_ep(p, addr.addr, cast(i32)i); + dst = lb_emit_array_ep(p, dst, index); + lbValue src = lb_emit_struct_ev(p, value, cast(i32)i); + lb_emit_store(p, dst, src); + } + return; + } + + GB_ASSERT(value.value != nullptr); + value = lb_emit_conv(p, value, lb_addr_type(addr)); + + LLVMBuildStore(p->builder, value.value, addr.addr.value); +} + +void lb_const_store(lbValue ptr, lbValue value) { + GB_ASSERT(lb_is_const(ptr)); + GB_ASSERT(lb_is_const(value)); + GB_ASSERT(is_type_pointer(ptr.type)); + LLVMSetInitializer(ptr.value, value.value); +} + + +void lb_emit_store(lbProcedure *p, lbValue ptr, lbValue value) { + GB_ASSERT(value.value != nullptr); + Type *a = type_deref(ptr.type); + if (is_type_boolean(a)) { + // NOTE(bill): There are multiple sized booleans, thus force a conversion (if necessarily) + value = lb_emit_conv(p, value, a); + } + Type *ca = core_type(a); + if (ca->kind == Type_Basic) { + GB_ASSERT_MSG(are_types_identical(ca, core_type(value.type)), "%s != %s", type_to_string(a), type_to_string(value.type)); + } else { + GB_ASSERT_MSG(are_types_identical(a, value.type), "%s != %s", type_to_string(a), type_to_string(value.type)); + } + + LLVMBuildStore(p->builder, value.value, ptr.value); +} + +lbValue lb_emit_load(lbProcedure *p, lbValue value) { + lbModule *m = p->module; + GB_ASSERT(value.value != nullptr); + Type *t = type_deref(value.type); + LLVMValueRef v = LLVMBuildLoad2(p->builder, lb_type(m, t), value.value, ""); + return lbValue{v, t}; +} + +lbValue lb_addr_load(lbProcedure *p, lbAddr const &addr) { + GB_ASSERT(addr.addr.value != nullptr); + + if (addr.kind == lbAddr_Map) { + Type *map_type = base_type(addr.map.type); + lbAddr v = lb_add_local_generated(p, map_type->Map.lookup_result_type, true); + lbValue h = lb_gen_map_header(p, addr.addr, map_type); + lbValue key = lb_gen_map_key(p, addr.map.key, map_type->Map.key); + + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = h; + args[1] = key; + + lbValue ptr = lb_emit_runtime_call(p, "__dynamic_map_get", args); + lbValue ok = lb_emit_conv(p, lb_emit_comp_against_nil(p, Token_NotEq, ptr), t_bool); + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 1), ok); + + lbBlock *then = lb_create_block(p, "map.get.then"); + lbBlock *done = lb_create_block(p, "map.get.done"); + lb_emit_if(p, ok, then, done); + lb_start_block(p, then); + { + // TODO(bill): mem copy it instead? + lbValue gep0 = lb_emit_struct_ep(p, v.addr, 0); + lbValue value = lb_emit_conv(p, ptr, gep0.type); + lb_emit_store(p, gep0, lb_emit_load(p, value)); + } + lb_emit_jump(p, done); + lb_start_block(p, done); + + + if (is_type_tuple(addr.map.result)) { + return lb_addr_load(p, v); + } else { + lbValue single = lb_emit_struct_ep(p, v.addr, 0); + return lb_emit_load(p, single); + } + + } else if (addr.kind == lbAddr_BitField) { + Type *bft = base_type(type_deref(addr.addr.type)); + GB_ASSERT(is_type_bit_field(bft)); + + unsigned value_index = cast(unsigned)addr.bit_field.value_index; + i32 size_in_bits = bft->BitField.fields[value_index]->type->BitFieldValue.bits; + + i32 size_in_bytes = next_pow2((size_in_bits+7)/8); + if (size_in_bytes == 0) { + GB_ASSERT(size_in_bits == 0); + lbValue res = {}; + res.type = t_i32; + res.value = LLVMConstInt(lb_type(p->module, res.type), 0, false); + return res; + } + + Type *int_type = nullptr; + switch (size_in_bytes) { + case 1: int_type = t_u8; break; + case 2: int_type = t_u16; break; + case 4: int_type = t_u32; break; + case 8: int_type = t_u64; break; + case 16: int_type = t_u128; break; + } + GB_ASSERT(int_type != nullptr); + + LLVMValueRef internal_data = LLVMBuildStructGEP(p->builder, addr.addr.value, 1, ""); + LLVMValueRef field_ptr = LLVMBuildStructGEP(p->builder, internal_data, value_index, ""); + LLVMValueRef field = LLVMBuildLoad(p->builder, field_ptr, ""); + + lbValue res = {}; + res.type = int_type; + res.value = LLVMBuildZExtOrBitCast(p->builder, field, lb_type(p->module, int_type), ""); + return res; + } else if (addr.kind == lbAddr_Context) { + if (addr.ctx.sel.index.count > 0) { + lbValue a = addr.addr; + lbValue b = lb_emit_deep_field_gep(p, a, addr.ctx.sel); + return lb_emit_load(p, b); + } else { + return lb_emit_load(p, addr.addr); + } + } else if (addr.kind == lbAddr_SoaVariable) { + Type *t = type_deref(addr.addr.type); + t = base_type(t); + GB_ASSERT(t->kind == Type_Struct && t->Struct.soa_kind != StructSoa_None); + Type *elem = t->Struct.soa_elem; + + lbValue len = {}; + if (t->Struct.soa_kind == StructSoa_Fixed) { + len = lb_const_int(p->module, t_int, t->Struct.soa_count); + } else { + lbValue v = lb_emit_load(p, addr.addr); + len = lb_soa_struct_len(p, v); + } + + lbAddr res = lb_add_local_generated(p, elem, true); + + if (!lb_is_const(addr.soa.index) || t->Struct.soa_kind != StructSoa_Fixed) { + // lb_emit_bounds_check(p, ast_token(addr.soa.index_expr), addr.soa.index, len); + } + + if (t->Struct.soa_kind == StructSoa_Fixed) { + for_array(i, t->Struct.fields) { + Entity *field = t->Struct.fields[i]; + Type *base_type = field->type; + GB_ASSERT(base_type->kind == Type_Array); + + lbValue dst = lb_emit_struct_ep(p, res.addr, cast(i32)i); + lbValue src_ptr = lb_emit_struct_ep(p, addr.addr, cast(i32)i); + src_ptr = lb_emit_array_ep(p, src_ptr, addr.soa.index); + lbValue src = lb_emit_load(p, src_ptr); + lb_emit_store(p, dst, src); + } + } else { + isize field_count = t->Struct.fields.count; + if (t->Struct.soa_kind == StructSoa_Slice) { + field_count -= 1; + } else if (t->Struct.soa_kind == StructSoa_Dynamic) { + field_count -= 3; + } + for (isize i = 0; i < field_count; i++) { + Entity *field = t->Struct.fields[i]; + Type *base_type = field->type; + GB_ASSERT(base_type->kind == Type_Pointer); + Type *elem = base_type->Pointer.elem; + + lbValue dst = lb_emit_struct_ep(p, res.addr, cast(i32)i); + lbValue src_ptr = lb_emit_struct_ep(p, addr.addr, cast(i32)i); + src_ptr = lb_emit_ptr_offset(p, src_ptr, addr.soa.index); + lbValue src = lb_emit_load(p, src_ptr); + src = lb_emit_load(p, src); + lb_emit_store(p, dst, src); + } + } + + return lb_addr_load(p, res); + } + + if (is_type_proc(addr.addr.type)) { + return addr.addr; + } + return lb_emit_load(p, addr.addr); +} + +lbValue lb_const_union_tag(lbModule *m, Type *u, Type *v) { + return lb_const_value(m, union_tag_type(u), exact_value_i64(union_variant_index(u, v))); +} + +lbValue lb_emit_union_tag_ptr(lbProcedure *p, lbValue u) { + Type *t = u.type; + GB_ASSERT_MSG(is_type_pointer(t) && + is_type_union(type_deref(t)), "%s", type_to_string(t)); + Type *ut = type_deref(t); + + GB_ASSERT(!is_type_union_maybe_pointer_original_alignment(ut)); + GB_ASSERT(!is_type_union_maybe_pointer(ut)); + GB_ASSERT(type_size_of(ut) > 0); + + Type *tag_type = union_tag_type(ut); + + LLVMTypeRef uvt = LLVMGetElementType(LLVMTypeOf(u.value)); + unsigned element_count = LLVMCountStructElementTypes(uvt); + GB_ASSERT_MSG(element_count == 3, "(%s) != (%s)", type_to_string(ut), LLVMPrintTypeToString(uvt)); + + lbValue tag_ptr = {}; + tag_ptr.value = LLVMBuildStructGEP(p->builder, u.value, 2, ""); + tag_ptr.type = alloc_type_pointer(tag_type); + return tag_ptr; +} + +lbValue lb_emit_union_tag_value(lbProcedure *p, lbValue u) { + lbValue ptr = lb_address_from_load_or_generate_local(p, u); + lbValue tag_ptr = lb_emit_union_tag_ptr(p, ptr); + return lb_emit_load(p, tag_ptr); +} + + +void lb_emit_store_union_variant_tag(lbProcedure *p, lbValue parent, Type *variant_type) { + Type *t = type_deref(parent.type); + + if (is_type_union_maybe_pointer(t) || type_size_of(t) == 0) { + // No tag needed! + } else { + lbValue tag_ptr = lb_emit_union_tag_ptr(p, parent); + lb_emit_store(p, tag_ptr, lb_const_union_tag(p->module, t, variant_type)); + } +} + +void lb_emit_store_union_variant(lbProcedure *p, lbValue parent, lbValue variant, Type *variant_type) { + gbAllocator a = heap_allocator(); + lbValue underlying = lb_emit_conv(p, parent, alloc_type_pointer(variant_type)); + + lb_emit_store(p, underlying, variant); + lb_emit_store_union_variant_tag(p, parent, variant_type); +} + + +void lb_clone_struct_type(LLVMTypeRef dst, LLVMTypeRef src) { + unsigned field_count = LLVMCountStructElementTypes(src); + LLVMTypeRef *fields = gb_alloc_array(heap_allocator(), LLVMTypeRef, field_count); + LLVMGetStructElementTypes(src, fields); + LLVMStructSetBody(dst, fields, field_count, LLVMIsPackedStruct(src)); + gb_free(heap_allocator(), fields); +} + +LLVMTypeRef lb_alignment_prefix_type_hack(lbModule *m, i64 alignment) { + switch (alignment) { + case 1: + return LLVMArrayType(lb_type(m, t_u8), 0); + case 2: + return LLVMArrayType(lb_type(m, t_u16), 0); + case 4: + return LLVMArrayType(lb_type(m, t_u32), 0); + case 8: + return LLVMArrayType(lb_type(m, t_u64), 0); + case 16: + return LLVMArrayType(LLVMVectorType(lb_type(m, t_u32), 4), 0); + default: + GB_PANIC("Invalid alignment %d", cast(i32)alignment); + break; + } + return nullptr; +} + +bool lb_is_elem_const(Ast *elem, Type *elem_type) { + if (!elem_type_can_be_constant(elem_type)) { + return false; + } + if (elem->kind == Ast_FieldValue) { + elem = elem->FieldValue.value; + } + TypeAndValue tav = type_and_value_of_expr(elem); + GB_ASSERT_MSG(tav.mode != Addressing_Invalid, "%s %s", expr_to_string(elem), type_to_string(tav.type)); + return tav.value.kind != ExactValue_Invalid; +} + +String lb_mangle_name(lbModule *m, Entity *e) { + gbAllocator a = heap_allocator(); + + String name = e->token.string; + + AstPackage *pkg = e->pkg; + GB_ASSERT_MSG(pkg != nullptr, "Missing package for '%.*s'", LIT(name)); + String pkgn = pkg->name; + GB_ASSERT(!rune_is_digit(pkgn[0])); + + + isize max_len = pkgn.len + 1 + name.len + 1; + bool require_suffix_id = is_type_polymorphic(e->type, true); + + if ((e->scope->flags & (ScopeFlag_File | ScopeFlag_Pkg)) == 0) { + require_suffix_id = true; + } else if (is_blank_ident(e->token)) { + require_suffix_id = true; + } + + if (require_suffix_id) { + max_len += 21; + } + + char *new_name = gb_alloc_array(a, char, max_len); + isize new_name_len = gb_snprintf( + new_name, max_len, + "%.*s.%.*s", LIT(pkgn), LIT(name) + ); + if (require_suffix_id) { + char *str = new_name + new_name_len-1; + isize len = max_len-new_name_len; + isize extra = gb_snprintf(str, len, "-%llu", cast(unsigned long long)e->id); + new_name_len += extra-1; + } + + String mangled_name = make_string((u8 const *)new_name, new_name_len-1); + return mangled_name; +} + +String lb_set_nested_type_name_ir_mangled_name(Entity *e, lbProcedure *p) { + // NOTE(bill, 2020-03-08): A polymorphic procedure may take a nested type declaration + // and as a result, the declaration does not have time to determine what it should be + + GB_ASSERT(e != nullptr && e->kind == Entity_TypeName); + if (e->TypeName.ir_mangled_name.len != 0) { + return e->TypeName.ir_mangled_name; + } + GB_ASSERT((e->scope->flags & ScopeFlag_File) == 0); + + if (p == nullptr) { + Entity *proc = nullptr; + if (e->parent_proc_decl != nullptr) { + proc = e->parent_proc_decl->entity; + } else { + Scope *scope = e->scope; + while (scope != nullptr && (scope->flags & ScopeFlag_Proc) == 0) { + scope = scope->parent; + } + GB_ASSERT(scope != nullptr); + GB_ASSERT(scope->flags & ScopeFlag_Proc); + proc = scope->procedure_entity; + } + GB_ASSERT(proc->kind == Entity_Procedure); + GB_ASSERT(proc->code_gen_procedure != nullptr); + p = proc->code_gen_procedure; + } + + // NOTE(bill): Generate a new name + // parent_proc.name-guid + String ts_name = e->token.string; + + lbModule *m = p->module; + isize name_len = p->name.len + 1 + ts_name.len + 1 + 10 + 1; + char *name_text = gb_alloc_array(heap_allocator(), char, name_len); + u32 guid = ++p->module->nested_type_name_guid; + name_len = gb_snprintf(name_text, name_len, "%.*s.%.*s-%u", LIT(p->name), LIT(ts_name), guid); + + String name = make_string(cast(u8 *)name_text, name_len-1); + e->TypeName.ir_mangled_name = name; + return name; +} + + +String lb_get_entity_name(lbModule *m, Entity *e, String default_name) { + if (e != nullptr && e->kind == Entity_TypeName && e->TypeName.ir_mangled_name.len != 0) { + return e->TypeName.ir_mangled_name; + } + GB_ASSERT(e != nullptr); + + if (e->pkg == nullptr) { + return e->token.string; + } + + if (e->kind == Entity_TypeName && (e->scope->flags & ScopeFlag_File) == 0) { + return lb_set_nested_type_name_ir_mangled_name(e, nullptr); + } + + String name = {}; + + bool no_name_mangle = false; + + if (e->kind == Entity_Variable) { + bool is_foreign = e->Variable.is_foreign; + bool is_export = e->Variable.is_export; + no_name_mangle = e->Variable.link_name.len > 0 || is_foreign || is_export; + if (e->Variable.link_name.len > 0) { + return e->Variable.link_name; + } + } else if (e->kind == Entity_Procedure && e->Procedure.link_name.len > 0) { + return e->Procedure.link_name; + } else if (e->kind == Entity_Procedure && e->Procedure.is_export) { + no_name_mangle = true; + } + + if (!no_name_mangle) { + name = lb_mangle_name(m, e); + } + if (name.len == 0) { + name = e->token.string; + } + + if (e->kind == Entity_TypeName) { + if ((e->scope->flags & ScopeFlag_File) == 0) { + gb_printf_err("<<< %.*s %.*s %p\n", LIT(e->token.string), LIT(name), e); + } + + e->TypeName.ir_mangled_name = name; + } else if (e->kind == Entity_Procedure) { + e->Procedure.link_name = name; + } + + return name; +} + +LLVMTypeRef lb_type_internal(lbModule *m, Type *type) { + Type *original_type = type; + + LLVMContextRef ctx = m->ctx; + i64 size = type_size_of(type); // Check size + + GB_ASSERT(type != t_invalid); + + switch (type->kind) { + case Type_Basic: + switch (type->Basic.kind) { + case Basic_llvm_bool: return LLVMInt1TypeInContext(ctx); + case Basic_bool: return LLVMInt8TypeInContext(ctx); + case Basic_b8: return LLVMInt8TypeInContext(ctx); + case Basic_b16: return LLVMInt16TypeInContext(ctx); + case Basic_b32: return LLVMInt32TypeInContext(ctx); + case Basic_b64: return LLVMInt64TypeInContext(ctx); + + case Basic_i8: return LLVMInt8TypeInContext(ctx); + case Basic_u8: return LLVMInt8TypeInContext(ctx); + case Basic_i16: return LLVMInt16TypeInContext(ctx); + case Basic_u16: return LLVMInt16TypeInContext(ctx); + case Basic_i32: return LLVMInt32TypeInContext(ctx); + case Basic_u32: return LLVMInt32TypeInContext(ctx); + case Basic_i64: return LLVMInt64TypeInContext(ctx); + case Basic_u64: return LLVMInt64TypeInContext(ctx); + case Basic_i128: return LLVMInt128TypeInContext(ctx); + case Basic_u128: return LLVMInt128TypeInContext(ctx); + + case Basic_rune: return LLVMInt32TypeInContext(ctx); + + // Basic_f16, + case Basic_f32: return LLVMFloatTypeInContext(ctx); + case Basic_f64: return LLVMDoubleTypeInContext(ctx); + + // Basic_complex32, + case Basic_complex64: + { + char const *name = "..complex64"; + LLVMTypeRef type = LLVMGetTypeByName(m->mod, name); + if (type != nullptr) { + return type; + } + type = LLVMStructCreateNamed(ctx, name); + LLVMTypeRef fields[2] = { + lb_type(m, t_f32), + lb_type(m, t_f32), + }; + LLVMStructSetBody(type, fields, 2, false); + return type; + } + case Basic_complex128: + { + char const *name = "..complex128"; + LLVMTypeRef type = LLVMGetTypeByName(m->mod, name); + if (type != nullptr) { + return type; + } + type = LLVMStructCreateNamed(ctx, name); + LLVMTypeRef fields[2] = { + lb_type(m, t_f64), + lb_type(m, t_f64), + }; + LLVMStructSetBody(type, fields, 2, false); + return type; + } + + case Basic_quaternion128: + { + char const *name = "..quaternion128"; + LLVMTypeRef type = LLVMGetTypeByName(m->mod, name); + if (type != nullptr) { + return type; + } + type = LLVMStructCreateNamed(ctx, name); + LLVMTypeRef fields[4] = { + lb_type(m, t_f32), + lb_type(m, t_f32), + lb_type(m, t_f32), + lb_type(m, t_f32), + }; + LLVMStructSetBody(type, fields, 4, false); + return type; + } + case Basic_quaternion256: + { + char const *name = "..quaternion256"; + LLVMTypeRef type = LLVMGetTypeByName(m->mod, name); + if (type != nullptr) { + return type; + } + type = LLVMStructCreateNamed(ctx, name); + LLVMTypeRef fields[4] = { + lb_type(m, t_f64), + lb_type(m, t_f64), + lb_type(m, t_f64), + lb_type(m, t_f64), + }; + LLVMStructSetBody(type, fields, 4, false); + return type; + } + + case Basic_int: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size); + case Basic_uint: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size); + + case Basic_uintptr: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size); + + case Basic_rawptr: return LLVMPointerType(LLVMInt8Type(), 0); + case Basic_string: + { + char const *name = "..string"; + LLVMTypeRef type = LLVMGetTypeByName(m->mod, name); + if (type != nullptr) { + return type; + } + type = LLVMStructCreateNamed(ctx, name); + LLVMTypeRef fields[2] = { + LLVMPointerType(lb_type(m, t_u8), 0), + lb_type(m, t_int), + }; + LLVMStructSetBody(type, fields, 2, false); + return type; + } + case Basic_cstring: return LLVMPointerType(LLVMInt8Type(), 0); + case Basic_any: + { + char const *name = "..any"; + LLVMTypeRef type = LLVMGetTypeByName(m->mod, name); + if (type != nullptr) { + return type; + } + type = LLVMStructCreateNamed(ctx, name); + LLVMTypeRef fields[2] = { + lb_type(m, t_rawptr), + lb_type(m, t_typeid), + }; + LLVMStructSetBody(type, fields, 2, false); + return type; + } + + case Basic_typeid: return LLVMIntType(8*cast(unsigned)build_context.word_size); + + // Endian Specific Types + case Basic_i16le: return LLVMInt16TypeInContext(ctx); + case Basic_u16le: return LLVMInt16TypeInContext(ctx); + case Basic_i32le: return LLVMInt32TypeInContext(ctx); + case Basic_u32le: return LLVMInt32TypeInContext(ctx); + case Basic_i64le: return LLVMInt64TypeInContext(ctx); + case Basic_u64le: return LLVMInt64TypeInContext(ctx); + case Basic_i128le: return LLVMInt128TypeInContext(ctx); + case Basic_u128le: return LLVMInt128TypeInContext(ctx); + + case Basic_i16be: return LLVMInt16TypeInContext(ctx); + case Basic_u16be: return LLVMInt16TypeInContext(ctx); + case Basic_i32be: return LLVMInt32TypeInContext(ctx); + case Basic_u32be: return LLVMInt32TypeInContext(ctx); + case Basic_i64be: return LLVMInt64TypeInContext(ctx); + case Basic_u64be: return LLVMInt64TypeInContext(ctx); + case Basic_i128be: return LLVMInt128TypeInContext(ctx); + case Basic_u128be: return LLVMInt128TypeInContext(ctx); + + // Untyped types + case Basic_UntypedBool: GB_PANIC("Basic_UntypedBool"); break; + case Basic_UntypedInteger: GB_PANIC("Basic_UntypedInteger"); break; + case Basic_UntypedFloat: GB_PANIC("Basic_UntypedFloat"); break; + case Basic_UntypedComplex: GB_PANIC("Basic_UntypedComplex"); break; + case Basic_UntypedQuaternion: GB_PANIC("Basic_UntypedQuaternion"); break; + case Basic_UntypedString: GB_PANIC("Basic_UntypedString"); break; + case Basic_UntypedRune: GB_PANIC("Basic_UntypedRune"); break; + case Basic_UntypedNil: GB_PANIC("Basic_UntypedNil"); break; + case Basic_UntypedUndef: GB_PANIC("Basic_UntypedUndef"); break; + } + break; + case Type_Named: + { + Type *base = base_type(type->Named.base); + + switch (base->kind) { + case Type_Basic: + return lb_type(m, base); + + case Type_Named: + case Type_Generic: + case Type_BitFieldValue: + GB_PANIC("INVALID TYPE"); + break; + + case Type_Opaque: + return lb_type(m, base->Opaque.elem); + + case Type_Pointer: + case Type_Array: + case Type_EnumeratedArray: + case Type_Slice: + case Type_DynamicArray: + case Type_Map: + case Type_Enum: + case Type_BitSet: + case Type_SimdVector: + return lb_type(m, base); + + // TODO(bill): Deal with this correctly. Can this be named? + case Type_Proc: + return lb_type(m, base); + + case Type_Tuple: + return lb_type(m, base); + } + + LLVMTypeRef *found = map_get(&m->types, hash_type(base)); + if (found) { + LLVMTypeKind kind = LLVMGetTypeKind(*found); + if (kind == LLVMStructTypeKind) { + char const *name = alloc_cstring(heap_allocator(), lb_get_entity_name(m, type->Named.type_name)); + LLVMTypeRef llvm_type = LLVMGetTypeByName(m->mod, name); + if (llvm_type != nullptr) { + return llvm_type; + } + llvm_type = LLVMStructCreateNamed(ctx, name); + map_set(&m->types, hash_type(type), llvm_type); + lb_clone_struct_type(llvm_type, *found); + return llvm_type; + } + } + + switch (base->kind) { + case Type_Struct: + case Type_Union: + case Type_BitField: + { + char const *name = alloc_cstring(heap_allocator(), lb_get_entity_name(m, type->Named.type_name)); + LLVMTypeRef llvm_type = LLVMGetTypeByName(m->mod, name); + if (llvm_type != nullptr) { + return llvm_type; + } + llvm_type = LLVMStructCreateNamed(ctx, name); + map_set(&m->types, hash_type(type), llvm_type); + lb_clone_struct_type(llvm_type, lb_type(m, base)); + return llvm_type; + } + } + + + return lb_type(m, base); + } + + case Type_Pointer: + return LLVMPointerType(lb_type(m, type_deref(type)), 0); + + case Type_Opaque: + return lb_type(m, base_type(type)); + + case Type_Array: + return LLVMArrayType(lb_type(m, type->Array.elem), cast(unsigned)type->Array.count); + + case Type_EnumeratedArray: + return LLVMArrayType(lb_type(m, type->EnumeratedArray.elem), cast(unsigned)type->EnumeratedArray.count); + + case Type_Slice: + { + LLVMTypeRef fields[2] = { + LLVMPointerType(lb_type(m, type->Slice.elem), 0), // data + lb_type(m, t_int), // len + }; + return LLVMStructTypeInContext(ctx, fields, 2, false); + } + break; + + case Type_DynamicArray: + { + LLVMTypeRef fields[4] = { + LLVMPointerType(lb_type(m, type->DynamicArray.elem), 0), // data + lb_type(m, t_int), // len + lb_type(m, t_int), // cap + lb_type(m, t_allocator), // allocator + }; + return LLVMStructTypeInContext(ctx, fields, 4, false); + } + break; + + case Type_Map: + return lb_type(m, type->Map.internal_type); + + case Type_Struct: + { + if (type->Struct.is_raw_union) { + unsigned field_count = 2; + LLVMTypeRef *fields = gb_alloc_array(heap_allocator(), LLVMTypeRef, field_count); + i64 alignment = type_align_of(type); + unsigned size_of_union = cast(unsigned)type_size_of(type); + fields[0] = lb_alignment_prefix_type_hack(m, alignment); + fields[1] = LLVMArrayType(lb_type(m, t_u8), size_of_union); + return LLVMStructTypeInContext(ctx, fields, field_count, false); + } + + isize offset = 0; + if (type->Struct.custom_align > 0) { + offset = 1; + } + + unsigned field_count = cast(unsigned)(type->Struct.fields.count + offset); + LLVMTypeRef *fields = gb_alloc_array(heap_allocator(), LLVMTypeRef, field_count); + GB_ASSERT(fields != nullptr); + defer (gb_free(heap_allocator(), fields)); + + for_array(i, type->Struct.fields) { + Entity *field = type->Struct.fields[i]; + fields[i+offset] = lb_type(m, field->type); + } + + if (type->Struct.custom_align > 0) { + fields[0] = lb_alignment_prefix_type_hack(m, type->Struct.custom_align); + } + + return LLVMStructTypeInContext(ctx, fields, field_count, type->Struct.is_packed); + } + break; + + case Type_Union: + if (type->Union.variants.count == 0) { + return LLVMStructTypeInContext(ctx, nullptr, 0, false); + } else { + // NOTE(bill): The zero size array is used to fix the alignment used in a structure as + // LLVM takes the first element's alignment as the entire alignment (like C) + i64 align = type_align_of(type); + i64 size = type_size_of(type); + + if (is_type_union_maybe_pointer_original_alignment(type)) { + LLVMTypeRef fields[1] = {lb_type(m, type->Union.variants[0])}; + return LLVMStructTypeInContext(ctx, fields, 1, false); + } + + unsigned block_size = cast(unsigned)type->Union.variant_block_size; + + LLVMTypeRef fields[3] = {}; + unsigned field_count = 1; + fields[0] = lb_alignment_prefix_type_hack(m, align); + if (is_type_union_maybe_pointer(type)) { + field_count += 1; + fields[1] = lb_type(m, type->Union.variants[0]); + } else { + field_count += 2; + if (block_size == align) { + fields[1] = LLVMIntTypeInContext(m->ctx, 8*block_size); + } else { + fields[1] = LLVMArrayType(lb_type(m, t_u8), block_size); + } + fields[2] = lb_type(m, union_tag_type(type)); + } + + return LLVMStructTypeInContext(ctx, fields, field_count, false); + } + break; + + case Type_Enum: + return lb_type(m, base_enum_type(type)); + + case Type_Tuple: + if (type->Tuple.variables.count == 1) { + return lb_type(m, type->Tuple.variables[0]->type); + } else { + unsigned field_count = cast(unsigned)(type->Tuple.variables.count); + LLVMTypeRef *fields = gb_alloc_array(heap_allocator(), LLVMTypeRef, field_count); + defer (gb_free(heap_allocator(), fields)); + + for_array(i, type->Tuple.variables) { + Entity *field = type->Tuple.variables[i]; + fields[i] = lb_type(m, field->type); + } + + return LLVMStructTypeInContext(ctx, fields, field_count, type->Tuple.is_packed); + } + + case Type_Proc: + { + set_procedure_abi_types(heap_allocator(), type); + + LLVMTypeRef return_type = LLVMVoidTypeInContext(ctx); + isize offset = 0; + if (type->Proc.return_by_pointer) { + offset = 1; + } else if (type->Proc.abi_compat_result_type != nullptr) { + return_type = lb_type(m, type->Proc.abi_compat_result_type); + } + + isize extra_param_count = offset; + if (type->Proc.calling_convention == ProcCC_Odin) { + extra_param_count += 1; + } + + isize param_count = type->Proc.abi_compat_params.count + extra_param_count; + LLVMTypeRef *param_types = gb_alloc_array(heap_allocator(), LLVMTypeRef, param_count); + defer (gb_free(heap_allocator(), param_types)); + + isize param_index = offset; + for_array(i, type->Proc.abi_compat_params) { + Type *param = type->Proc.abi_compat_params[i]; + if (param == nullptr) { + continue; + } + param_types[param_index++] = lb_type(m, param); + } + if (type->Proc.return_by_pointer) { + param_types[0] = LLVMPointerType(lb_type(m, type->Proc.abi_compat_result_type), 0); + } + if (type->Proc.calling_convention == ProcCC_Odin) { + param_types[param_index++] = lb_type(m, t_context_ptr); + } + + LLVMTypeRef t = LLVMFunctionType(return_type, param_types, cast(unsigned)param_index, type->Proc.c_vararg); + return LLVMPointerType(t, 0); + } + break; + case Type_BitFieldValue: + return LLVMIntType(type->BitFieldValue.bits); + + case Type_BitField: + { + LLVMTypeRef internal_type = nullptr; + { + GB_ASSERT(type->BitField.fields.count == type->BitField.sizes.count); + unsigned field_count = cast(unsigned)type->BitField.fields.count; + LLVMTypeRef *fields = gb_alloc_array(heap_allocator(), LLVMTypeRef, field_count); + defer (gb_free(heap_allocator(), fields)); + + for_array(i, type->BitField.sizes) { + u32 size = type->BitField.sizes[i]; + fields[i] = LLVMIntType(size); + } + + internal_type = LLVMStructTypeInContext(ctx, fields, field_count, true); + } + unsigned field_count = 2; + LLVMTypeRef *fields = gb_alloc_array(heap_allocator(), LLVMTypeRef, field_count); + + i64 alignment = 1; + if (type->BitField.custom_align > 0) { + alignment = type->BitField.custom_align; + } + fields[0] = lb_alignment_prefix_type_hack(m, alignment); + fields[1] = internal_type; + + return LLVMStructTypeInContext(ctx, fields, field_count, true); + } + break; + case Type_BitSet: + return LLVMIntType(8*cast(unsigned)type_size_of(type)); + case Type_SimdVector: + if (type->SimdVector.is_x86_mmx) { + return LLVMX86MMXTypeInContext(ctx); + } + return LLVMVectorType(lb_type(m, type->SimdVector.elem), cast(unsigned)type->SimdVector.count); + } + + GB_PANIC("Invalid type %s", type_to_string(type)); + return LLVMInt32TypeInContext(ctx); +} + +LLVMTypeRef lb_type(lbModule *m, Type *type) { + type = default_type(type); + + LLVMTypeRef *found = map_get(&m->types, hash_type(type)); + if (found) { + return *found; + } + + LLVMTypeRef llvm_type = lb_type_internal(m, type); + + map_set(&m->types, hash_type(type), llvm_type); + + return llvm_type; +} + +void lb_add_entity(lbModule *m, Entity *e, lbValue val) { + if (e != nullptr) { + map_set(&m->values, hash_entity(e), val); + } +} +void lb_add_member(lbModule *m, String const &name, lbValue val) { + if (name.len > 0) { + map_set(&m->members, hash_string(name), val); + } +} +void lb_add_member(lbModule *m, HashKey const &key, lbValue val) { + map_set(&m->members, key, val); +} +void lb_add_procedure_value(lbModule *m, lbProcedure *p) { + if (p->entity != nullptr) { + map_set(&m->procedure_values, hash_pointer(p->value), p->entity); + } + map_set(&m->procedures, hash_string(p->name), p); +} + + + +lbValue lb_emit_string(lbProcedure *p, lbValue str_elem, lbValue str_len) { + if (false && lb_is_const(str_elem) && lb_is_const(str_len)) { + LLVMValueRef values[2] = { + str_elem.value, + str_len.value, + }; + lbValue res = {}; + res.type = t_string; + res.value = LLVMConstNamedStruct(lb_type(p->module, t_string), values, gb_count_of(values)); + return res; + } else { + lbAddr res = lb_add_local_generated(p, t_string, false); + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 0), str_elem); + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 1), str_len); + return lb_addr_load(p, res); + } +} + +LLVMAttributeRef lb_create_enum_attribute(LLVMContextRef ctx, char const *name, u64 value) { + unsigned kind = LLVMGetEnumAttributeKindForName(name, gb_strlen(name)); + GB_ASSERT(kind != 0); + return LLVMCreateEnumAttribute(ctx, kind, value); +} + +void lb_add_proc_attribute_at_index(lbProcedure *p, isize index, char const *name, u64 value) { + LLVMAttributeRef attr = lb_create_enum_attribute(p->module->ctx, name, value); + GB_ASSERT(attr != nullptr); + LLVMAddAttributeAtIndex(p->value, cast(unsigned)index, attr); +} + +void lb_add_proc_attribute_at_index(lbProcedure *p, isize index, char const *name) { + lb_add_proc_attribute_at_index(p, index, name, cast(u64)true); +} + + + + +lbProcedure *lb_create_procedure(lbModule *m, Entity *entity) { + GB_ASSERT(entity != nullptr); + + String link_name = lb_get_entity_name(m, entity); + + { + HashKey key = hash_string(link_name); + lbValue *found = map_get(&m->members, key); + if (found) { + lb_add_entity(m, entity, *found); + lbProcedure **p_found = map_get(&m->procedures, key); + GB_ASSERT(p_found != nullptr); + return *p_found; + } + } + + + lbProcedure *p = gb_alloc_item(heap_allocator(), lbProcedure); + + p->module = m; + entity->code_gen_module = m; + entity->code_gen_procedure = p; + p->entity = entity; + p->name = link_name; + + DeclInfo *decl = entity->decl_info; + + ast_node(pl, ProcLit, decl->proc_lit); + Type *pt = base_type(entity->type); + GB_ASSERT(pt->kind == Type_Proc); + + set_procedure_abi_types(heap_allocator(), entity->type); + + p->type = entity->type; + p->type_expr = decl->type_expr; + p->body = pl->body; + p->tags = pt->Proc.tags; + p->inlining = ProcInlining_none; + p->is_foreign = entity->Procedure.is_foreign; + p->is_export = entity->Procedure.is_export; + p->is_entry_point = false; + + gbAllocator a = heap_allocator(); + p->children.allocator = a; + p->params.allocator = a; + p->defer_stmts.allocator = a; + p->blocks.allocator = a; + p->branch_blocks.allocator = a; + p->context_stack.allocator = a; + + + char *c_link_name = alloc_cstring(heap_allocator(), p->name); + LLVMTypeRef func_ptr_type = lb_type(m, p->type); + LLVMTypeRef func_type = LLVMGetElementType(func_ptr_type); + + p->value = LLVMAddFunction(m->mod, c_link_name, func_type); + + LLVMSetFunctionCallConv(p->value, lb_calling_convention_map[pt->Proc.calling_convention]); + lbValue proc_value = {p->value, p->type}; + lb_add_entity(m, entity, proc_value); + lb_add_member(m, p->name, proc_value); + lb_add_procedure_value(m, p); + + + // NOTE(bill): offset==0 is the return value + isize offset = 1; + if (pt->Proc.return_by_pointer) { + lb_add_proc_attribute_at_index(p, 1, "sret"); + lb_add_proc_attribute_at_index(p, 1, "noalias"); + offset = 2; + } + + isize parameter_index = 0; + if (pt->Proc.param_count) { + TypeTuple *params = &pt->Proc.params->Tuple; + for (isize i = 0; i < pt->Proc.param_count; i++) { + Entity *e = params->variables[i]; + Type *original_type = e->type; + Type *abi_type = pt->Proc.abi_compat_params[i]; + if (e->kind != Entity_Variable) continue; + + if (i+1 == params->variables.count && pt->Proc.c_vararg) { + continue; + } + if (is_type_tuple(abi_type)) { + for_array(j, abi_type->Tuple.variables) { + Type *tft = abi_type->Tuple.variables[j]->type; + if (e->flags&EntityFlag_NoAlias) { + lb_add_proc_attribute_at_index(p, offset+parameter_index+j, "noalias"); + } + } + parameter_index += abi_type->Tuple.variables.count; + } else { + if (e->flags&EntityFlag_NoAlias) { + lb_add_proc_attribute_at_index(p, offset+parameter_index, "noalias"); + } + parameter_index += 1; + } + } + } + + if (pt->Proc.calling_convention == ProcCC_Odin) { + lb_add_proc_attribute_at_index(p, offset+parameter_index, "noalias"); + lb_add_proc_attribute_at_index(p, offset+parameter_index, "nonnull"); + lb_add_proc_attribute_at_index(p, offset+parameter_index, "nocapture"); + } + + + if (entity->Procedure.is_foreign) { + lb_add_foreign_library_path(p->module, entity->Procedure.foreign_library); + } + + + { // Debug Information + unsigned line = cast(unsigned)entity->token.pos.line; + + LLVMMetadataRef file = nullptr; + if (entity->file != nullptr) { + cast(LLVMMetadataRef)entity->file->llvm_metadata; + } + LLVMMetadataRef scope = nullptr; + LLVMMetadataRef type = nullptr; + + // type = LLVMDIBuilderCreateSubroutineType(m->debug_builder, file, nullptr, 0, LLVMDIFlagZero); + + + LLVMMetadataRef res = LLVMDIBuilderCreateFunction(m->debug_builder, scope, + cast(char const *)entity->token.string.text, entity->token.string.len, + cast(char const *)p->name.text, p->name.len, + file, line, type, + true, p->body == nullptr, + line, LLVMDIFlagZero, false + ); + GB_ASSERT(res != nullptr); + map_set(&m->debug_values, hash_pointer(p), res); + } + + return p; +} + +lbProcedure *lb_create_dummy_procedure(lbModule *m, String link_name, Type *type) { + { + HashKey key = hash_string(link_name); + lbValue *found = map_get(&m->members, key); + GB_ASSERT(found == nullptr); + } + + lbProcedure *p = gb_alloc_item(heap_allocator(), lbProcedure); + + p->module = m; + p->name = link_name; + + p->type = type; + p->type_expr = nullptr; + p->body = nullptr; + p->tags = 0; + p->inlining = ProcInlining_none; + p->is_foreign = false; + p->is_export = false; + p->is_entry_point = false; + + gbAllocator a = heap_allocator(); + p->children.allocator = a; + p->params.allocator = a; + p->defer_stmts.allocator = a; + p->blocks.allocator = a; + p->branch_blocks.allocator = a; + p->context_stack.allocator = a; + + + char *c_link_name = alloc_cstring(heap_allocator(), p->name); + LLVMTypeRef func_ptr_type = lb_type(m, p->type); + LLVMTypeRef func_type = LLVMGetElementType(func_ptr_type); + + p->value = LLVMAddFunction(m->mod, c_link_name, func_type); + + Type *pt = p->type; + + LLVMSetFunctionCallConv(p->value, lb_calling_convention_map[pt->Proc.calling_convention]); + lbValue proc_value = {p->value, p->type}; + lb_add_member(m, p->name, proc_value); + lb_add_procedure_value(m, p); + + + // NOTE(bill): offset==0 is the return value + isize offset = 1; + if (pt->Proc.return_by_pointer) { + lb_add_proc_attribute_at_index(p, 1, "sret"); + lb_add_proc_attribute_at_index(p, 1, "noalias"); + offset = 2; + } + + isize parameter_index = 0; + if (pt->Proc.param_count) { + TypeTuple *params = &pt->Proc.params->Tuple; + for (isize i = 0; i < pt->Proc.param_count; i++) { + Entity *e = params->variables[i]; + Type *original_type = e->type; + Type *abi_type = pt->Proc.abi_compat_params[i]; + if (e->kind != Entity_Variable) continue; + + if (i+1 == params->variables.count && pt->Proc.c_vararg) { + continue; + } + if (is_type_tuple(abi_type)) { + for_array(j, abi_type->Tuple.variables) { + Type *tft = abi_type->Tuple.variables[j]->type; + if (e->flags&EntityFlag_NoAlias) { + lb_add_proc_attribute_at_index(p, offset+parameter_index+j, "noalias"); + } + } + parameter_index += abi_type->Tuple.variables.count; + } else { + if (e->flags&EntityFlag_NoAlias) { + lb_add_proc_attribute_at_index(p, offset+parameter_index, "noalias"); + } + parameter_index += 1; + } + } + } + + if (pt->Proc.calling_convention == ProcCC_Odin) { + lb_add_proc_attribute_at_index(p, offset+parameter_index, "noalias"); + lb_add_proc_attribute_at_index(p, offset+parameter_index, "nonnull"); + lb_add_proc_attribute_at_index(p, offset+parameter_index, "nocapture"); + } + + return p; +} + + +lbValue lb_value_param(lbProcedure *p, Entity *e, Type *abi_type, i32 index, lbParamPasskind *kind_) { + lbParamPasskind kind = lbParamPass_Value; + + if (e != nullptr && abi_type != e->type) { + if (is_type_pointer(abi_type)) { + GB_ASSERT(e->kind == Entity_Variable); + kind = lbParamPass_Pointer; + if (e->flags&EntityFlag_Value) { + kind = lbParamPass_ConstRef; + } + } else if (is_type_integer(abi_type)) { + kind = lbParamPass_Integer; + } else if (abi_type == t_llvm_bool) { + kind = lbParamPass_Value; + } else if (is_type_simd_vector(abi_type)) { + kind = lbParamPass_BitCast; + } else if (is_type_float(abi_type)) { + kind = lbParamPass_BitCast; + } else if (is_type_tuple(abi_type)) { + kind = lbParamPass_Tuple; + } else { + GB_PANIC("Invalid abi type pass kind %s", type_to_string(abi_type)); + } + } + + if (kind_) *kind_ = kind; + lbValue res = {}; + res.value = LLVMGetParam(p->value, cast(unsigned)index); + res.type = abi_type; + return res; +} + +lbValue lb_add_param(lbProcedure *p, Entity *e, Ast *expr, Type *abi_type, i32 index) { + lbParamPasskind kind = lbParamPass_Value; + lbValue v = lb_value_param(p, e, abi_type, index, &kind); + array_add(&p->params, v); + + lbValue res = {}; + + switch (kind) { + case lbParamPass_Value: { + lbAddr l = lb_add_local(p, e->type, e, false, index); + lbValue x = v; + if (abi_type == t_llvm_bool) { + x = lb_emit_conv(p, x, t_bool); + } + lb_addr_store(p, l, x); + return x; + } + case lbParamPass_Pointer: + lb_add_entity(p->module, e, v); + return lb_emit_load(p, v); + + case lbParamPass_Integer: { + lbAddr l = lb_add_local(p, e->type, e, false, index); + lbValue iptr = lb_emit_conv(p, l.addr, alloc_type_pointer(abi_type)); + lb_emit_store(p, iptr, v); + return lb_addr_load(p, l); + } + + case lbParamPass_ConstRef: + lb_add_entity(p->module, e, v); + return lb_emit_load(p, v); + + case lbParamPass_BitCast: { + lbAddr l = lb_add_local(p, e->type, e, false, index); + lbValue x = lb_emit_transmute(p, v, e->type); + lb_addr_store(p, l, x); + return x; + } + case lbParamPass_Tuple: { + lbAddr l = lb_add_local(p, e->type, e, true, index); + Type *st = struct_type_from_systemv_distribute_struct_fields(abi_type); + lbValue ptr = lb_emit_transmute(p, l.addr, alloc_type_pointer(st)); + if (abi_type->Tuple.variables.count > 0) { + array_pop(&p->params); + } + for_array(i, abi_type->Tuple.variables) { + Type *t = abi_type->Tuple.variables[i]->type; + + lbParamPasskind elem_kind = lbParamPass_Value; + lbValue elem = lb_value_param(p, nullptr, t, index+cast(i32)i, &elem_kind); + array_add(&p->params, elem); + + lbValue dst = lb_emit_struct_ep(p, ptr, cast(i32)i); + lb_emit_store(p, dst, elem); + } + return lb_addr_load(p, l); + } + + } + + GB_PANIC("Unreachable"); + return {}; +} + +void lb_start_block(lbProcedure *p, lbBlock *b) { + GB_ASSERT(b != nullptr); + if (!b->appended) { + b->appended = true; + LLVMAppendExistingBasicBlock(p->value, b->block); + } + LLVMPositionBuilderAtEnd(p->builder, b->block); + p->curr_block = b; +} + + +void lb_begin_procedure_body(lbProcedure *p) { + DeclInfo *decl = decl_info_of_entity(p->entity); + if (decl != nullptr) { + for_array(i, decl->labels) { + BlockLabel bl = decl->labels[i]; + lbBranchBlocks bb = {bl.label, nullptr, nullptr}; + array_add(&p->branch_blocks, bb); + } + } + + p->builder = LLVMCreateBuilder(); + + p->decl_block = lb_create_block(p, "decls", true); + p->entry_block = lb_create_block(p, "entry", true); + lb_start_block(p, p->entry_block); + + GB_ASSERT(p->type != nullptr); + + i32 parameter_index = 0; + + if (p->type->Proc.return_by_pointer) { + // NOTE(bill): this must be parameter 0 + Type *ptr_type = alloc_type_pointer(reduce_tuple_to_single_type(p->type->Proc.results)); + Entity *e = alloc_entity_param(nullptr, make_token_ident(str_lit("agg.result")), ptr_type, false, false); + e->flags |= EntityFlag_Sret | EntityFlag_NoAlias; + + lbValue return_ptr_value = {}; + return_ptr_value.value = LLVMGetParam(p->value, 0); + return_ptr_value.type = alloc_type_pointer(p->type->Proc.abi_compat_result_type); + p->return_ptr = lb_addr(return_ptr_value); + + lb_add_entity(p->module, e, return_ptr_value); + + parameter_index += 1; + } + + if (p->type->Proc.params != nullptr) { + TypeTuple *params = &p->type->Proc.params->Tuple; + if (p->type_expr != nullptr) { + ast_node(pt, ProcType, p->type_expr); + isize param_index = 0; + isize q_index = 0; + + for_array(i, params->variables) { + ast_node(fl, FieldList, pt->params); + GB_ASSERT(fl->list.count > 0); + GB_ASSERT(fl->list[0]->kind == Ast_Field); + if (q_index == fl->list[param_index]->Field.names.count) { + q_index = 0; + param_index++; + } + ast_node(field, Field, fl->list[param_index]); + Ast *name = field->names[q_index++]; + + Entity *e = params->variables[i]; + if (e->kind != Entity_Variable) { + continue; + } + + Type *abi_type = p->type->Proc.abi_compat_params[i]; + if (e->token.string != "") { + lb_add_param(p, e, name, abi_type, parameter_index); + } + + if (is_type_tuple(abi_type)) { + parameter_index += cast(i32)abi_type->Tuple.variables.count; + } else { + parameter_index += 1; + } + } + } else { + auto abi_types = p->type->Proc.abi_compat_params; + + for_array(i, params->variables) { + Entity *e = params->variables[i]; + if (e->kind != Entity_Variable) { + continue; + } + Type *abi_type = e->type; + if (abi_types.count > 0) { + abi_type = abi_types[i]; + } + if (e->token.string != "") { + lb_add_param(p, e, nullptr, abi_type, parameter_index); + } + if (is_type_tuple(abi_type)) { + parameter_index += cast(i32)abi_type->Tuple.variables.count; + } else { + parameter_index += 1; + } + } + } + } + + + if (p->type->Proc.has_named_results) { + GB_ASSERT(p->type->Proc.result_count > 0); + TypeTuple *results = &p->type->Proc.results->Tuple; + LLVMValueRef return_ptr = LLVMGetParam(p->value, 0); + + isize result_index = 0; + + for_array(i, results->variables) { + Entity *e = results->variables[i]; + if (e->kind != Entity_Variable) { + continue; + } + + if (e->token.string != "") { + GB_ASSERT(!is_blank_ident(e->token)); + + lbAddr res = lb_add_local(p, e->type, e); + + lbValue c = {}; + switch (e->Variable.param_value.kind) { + case ParameterValue_Constant: + c = lb_const_value(p->module, e->type, e->Variable.param_value.value); + break; + case ParameterValue_Nil: + c = lb_const_nil(p->module, e->type); + break; + case ParameterValue_Location: + GB_PANIC("ParameterValue_Location"); + break; + } + if (c.value != nullptr) { + lb_addr_store(p, res, c); + } + } + + result_index += 1; + } + } + + if (p->type->Proc.calling_convention == ProcCC_Odin) { + Entity *e = alloc_entity_param(nullptr, make_token_ident(str_lit("__.context_ptr")), t_context_ptr, false, false); + e->flags |= EntityFlag_NoAlias; + lbValue param = {}; + param.value = LLVMGetParam(p->value, LLVMCountParams(p->value)-1); + param.type = e->type; + lb_add_entity(p->module, e, param); + lbAddr ctx_addr = {}; + ctx_addr.kind = lbAddr_Context; + ctx_addr.addr = param; + lbContextData ctx = {ctx_addr, p->scope_index}; + array_add(&p->context_stack, ctx); + } + + lb_start_block(p, p->entry_block); +} + +void lb_end_procedure_body(lbProcedure *p) { + LLVMPositionBuilderAtEnd(p->builder, p->decl_block->block); + LLVMBuildBr(p->builder, p->entry_block->block); + LLVMPositionBuilderAtEnd(p->builder, p->curr_block->block); + + if (p->type->Proc.result_count == 0) { + LLVMValueRef instr = LLVMGetLastInstruction(p->curr_block->block); + if (!LLVMIsAReturnInst(instr)) { + lb_emit_defer_stmts(p, lbDeferExit_Return, nullptr); + LLVMBuildRetVoid(p->builder); + } + } else { + if (p->curr_block->preds.count == 0) { + LLVMValueRef instr = LLVMGetLastInstruction(p->curr_block->block); + if (instr == nullptr) { + // NOTE(bill): Remove dead trailing block + LLVMDeleteBasicBlock(p->curr_block->block); + } + } + } + + p->curr_block = nullptr; + +} +void lb_end_procedure(lbProcedure *p) { + LLVMDisposeBuilder(p->builder); +} + +void lb_add_edge(lbBlock *from, lbBlock *to) { + LLVMValueRef instr = LLVMGetLastInstruction(from->block); + if (instr == nullptr || !LLVMIsATerminatorInst(instr)) { + array_add(&from->succs, to); + array_add(&to->preds, from); + } +} + + +lbBlock *lb_create_block(lbProcedure *p, char const *name, bool append) { + lbBlock *b = gb_alloc_item(heap_allocator(), lbBlock); + b->block = LLVMCreateBasicBlockInContext(p->module->ctx, name); + b->appended = false; + if (append) { + b->appended = true; + LLVMAppendExistingBasicBlock(p->value, b->block); + } + + b->scope = p->curr_scope; + b->scope_index = p->scope_index; + + b->preds.allocator = heap_allocator(); + b->succs.allocator = heap_allocator(); + + array_add(&p->blocks, b); + + return b; +} + +void lb_emit_jump(lbProcedure *p, lbBlock *target_block) { + if (p->curr_block == nullptr) { + return; + } + LLVMValueRef last_instr = LLVMGetLastInstruction(p->curr_block->block); + if (last_instr != nullptr && LLVMIsATerminatorInst(last_instr)) { + return; + } + + lb_add_edge(p->curr_block, target_block); + LLVMBuildBr(p->builder, target_block->block); + p->curr_block = nullptr; +} + +void lb_emit_if(lbProcedure *p, lbValue cond, lbBlock *true_block, lbBlock *false_block) { + lbBlock *b = p->curr_block; + if (b == nullptr) { + return; + } + LLVMValueRef last_instr = LLVMGetLastInstruction(p->curr_block->block); + if (last_instr != nullptr && LLVMIsATerminatorInst(last_instr)) { + return; + } + + lb_add_edge(b, true_block); + lb_add_edge(b, false_block); + + LLVMValueRef cv = cond.value; + cv = LLVMBuildTruncOrBitCast(p->builder, cv, lb_type(p->module, t_llvm_bool), ""); + LLVMBuildCondBr(p->builder, cv, true_block->block, false_block->block); +} + +lbValue lb_build_cond(lbProcedure *p, Ast *cond, lbBlock *true_block, lbBlock *false_block) { + GB_ASSERT(cond != nullptr); + GB_ASSERT(true_block != nullptr); + GB_ASSERT(false_block != nullptr); + + switch (cond->kind) { + case_ast_node(pe, ParenExpr, cond); + return lb_build_cond(p, pe->expr, true_block, false_block); + case_end; + + case_ast_node(ue, UnaryExpr, cond); + if (ue->op.kind == Token_Not) { + return lb_build_cond(p, ue->expr, false_block, true_block); + } + case_end; + + case_ast_node(be, BinaryExpr, cond); + if (be->op.kind == Token_CmpAnd) { + lbBlock *block = lb_create_block(p, "cmp.and"); + lb_build_cond(p, be->left, block, false_block); + lb_start_block(p, block); + return lb_build_cond(p, be->right, true_block, false_block); + } else if (be->op.kind == Token_CmpOr) { + lbBlock *block = lb_create_block(p, "cmp.or"); + lb_build_cond(p, be->left, true_block, block); + lb_start_block(p, block); + return lb_build_cond(p, be->right, true_block, false_block); + } + case_end; + } + + lbValue v = lb_build_expr(p, cond); + // v = lb_emit_conv(p, v, t_bool); + v = lb_emit_conv(p, v, t_llvm_bool); + + lb_emit_if(p, v, true_block, false_block); + + return v; +} + + + +lbAddr lb_add_local(lbProcedure *p, Type *type, Entity *e, bool zero_init, i32 param_index) { + GB_ASSERT(p->decl_block != p->curr_block); + LLVMPositionBuilderAtEnd(p->builder, p->decl_block->block); + + char const *name = ""; + if (e != nullptr) { + // name = alloc_cstring(heap_allocator(), e->token.string); + } + + LLVMTypeRef llvm_type = lb_type(p->module, type); + LLVMValueRef ptr = LLVMBuildAlloca(p->builder, llvm_type, name); + LLVMSetAlignment(ptr, 16); // TODO(bill): Make this configurable + + LLVMPositionBuilderAtEnd(p->builder, p->curr_block->block); + if (zero_init) { + LLVMBuildStore(p->builder, LLVMConstNull(lb_type(p->module, type)), ptr); + } + + lbValue val = {}; + val.value = ptr; + val.type = alloc_type_pointer(type); + + if (e != nullptr) { + lb_add_entity(p->module, e, val); + } + + return lb_addr(val); +} + +lbAddr lb_add_local_generated(lbProcedure *p, Type *type, bool zero_init) { + return lb_add_local(p, type, nullptr, zero_init); +} + + +void lb_build_nested_proc(lbProcedure *p, AstProcLit *pd, Entity *e) { + GB_ASSERT(pd->body != nullptr); + lbModule *m = p->module; + auto *min_dep_set = &m->info->minimum_dependency_set; + + if (ptr_set_exists(min_dep_set, e) == false) { + // NOTE(bill): Nothing depends upon it so doesn't need to be built + return; + } + + // NOTE(bill): Generate a new name + // parent.name-guid + String original_name = e->token.string; + String pd_name = original_name; + if (e->Procedure.link_name.len > 0) { + pd_name = e->Procedure.link_name; + } + + isize name_len = p->name.len + 1 + pd_name.len + 1 + 10 + 1; + char *name_text = gb_alloc_array(heap_allocator(), char, name_len); + + i32 guid = cast(i32)p->children.count; + name_len = gb_snprintf(name_text, name_len, "%.*s.%.*s-%d", LIT(p->name), LIT(pd_name), guid); + String name = make_string(cast(u8 *)name_text, name_len-1); + + set_procedure_abi_types(heap_allocator(), e->type); + + + e->Procedure.link_name = name; + + lbProcedure *nested_proc = lb_create_procedure(p->module, e); + + lbValue value = {}; + value.value = nested_proc->value; + value.type = nested_proc->type; + + lb_add_entity(m, e, value); + array_add(&p->children, nested_proc); + array_add(&m->procedures_to_generate, nested_proc); +} + + +void lb_add_foreign_library_path(lbModule *m, Entity *e) { + if (e == nullptr) { + return; + } + GB_ASSERT(e->kind == Entity_LibraryName); + GB_ASSERT(e->flags & EntityFlag_Used); + + for_array(i, e->LibraryName.paths) { + String library_path = e->LibraryName.paths[i]; + if (library_path.len == 0) { + continue; + } + + bool ok = true; + for_array(path_index, m->foreign_library_paths) { + String path = m->foreign_library_paths[path_index]; + #if defined(GB_SYSTEM_WINDOWS) + if (str_eq_ignore_case(path, library_path)) { + #else + if (str_eq(path, library_path)) { + #endif + ok = false; + break; + } + } + + if (ok) { + array_add(&m->foreign_library_paths, library_path); + } + } +} + + + +void lb_build_constant_value_decl(lbProcedure *p, AstValueDecl *vd) { + if (vd == nullptr || vd->is_mutable) { + return; + } + + auto *min_dep_set = &p->module->info->minimum_dependency_set; + + static i32 global_guid = 0; + + for_array(i, vd->names) { + Ast *ident = vd->names[i]; + GB_ASSERT(ident->kind == Ast_Ident); + Entity *e = entity_of_ident(ident); + GB_ASSERT(e != nullptr); + if (e->kind != Entity_TypeName) { + continue; + } + + bool polymorphic_struct = false; + if (e->type != nullptr && e->kind == Entity_TypeName) { + Type *bt = base_type(e->type); + if (bt->kind == Type_Struct) { + polymorphic_struct = bt->Struct.is_polymorphic; + } + } + + if (!polymorphic_struct && !ptr_set_exists(min_dep_set, e)) { + continue; + } + + if (e->TypeName.ir_mangled_name.len != 0) { + // NOTE(bill): Already set + continue; + } + + lb_set_nested_type_name_ir_mangled_name(e, p); + } + + for_array(i, vd->names) { + Ast *ident = vd->names[i]; + GB_ASSERT(ident->kind == Ast_Ident); + Entity *e = entity_of_ident(ident); + GB_ASSERT(e != nullptr); + if (e->kind != Entity_Procedure) { + continue; + } + + CheckerInfo *info = p->module->info; + DeclInfo *decl = decl_info_of_entity(e); + ast_node(pl, ProcLit, decl->proc_lit); + if (pl->body != nullptr) { + auto *found = map_get(&info->gen_procs, hash_pointer(ident)); + if (found) { + auto procs = *found; + for_array(i, procs) { + Entity *e = procs[i]; + if (!ptr_set_exists(min_dep_set, e)) { + continue; + } + DeclInfo *d = decl_info_of_entity(e); + lb_build_nested_proc(p, &d->proc_lit->ProcLit, e); + } + } else { + lb_build_nested_proc(p, pl, e); + } + } else { + + // FFI - Foreign function interace + String original_name = e->token.string; + String name = original_name; + + if (e->Procedure.is_foreign) { + lb_add_foreign_library_path(p->module, e->Procedure.foreign_library); + } + + if (e->Procedure.link_name.len > 0) { + name = e->Procedure.link_name; + } + + HashKey key = hash_string(name); + lbValue *prev_value = map_get(&p->module->members, key); + if (prev_value != nullptr) { + // NOTE(bill): Don't do mutliple declarations in the IR + return; + } + + set_procedure_abi_types(heap_allocator(), e->type); + e->Procedure.link_name = name; + + lbProcedure *nested_proc = lb_create_procedure(p->module, e); + + lbValue value = {}; + value.value = nested_proc->value; + value.type = nested_proc->type; + + array_add(&p->module->procedures_to_generate, nested_proc); + if (p != nullptr) { + array_add(&p->children, nested_proc); + } else { + map_set(&p->module->members, hash_string(name), value); + } + } + } +} + + +void lb_build_stmt_list(lbProcedure *p, Array<Ast *> const &stmts) { + for_array(i, stmts) { + Ast *stmt = stmts[i]; + switch (stmt->kind) { + case_ast_node(vd, ValueDecl, stmt); + lb_build_constant_value_decl(p, vd); + case_end; + case_ast_node(fb, ForeignBlockDecl, stmt); + ast_node(block, BlockStmt, fb->body); + lb_build_stmt_list(p, block->stmts); + case_end; + } + } + for_array(i, stmts) { + lb_build_stmt(p, stmts[i]); + } +} + +lbBranchBlocks lb_lookup_branch_blocks(lbProcedure *p, Ast *ident) { + GB_ASSERT(ident->kind == Ast_Ident); + Entity *e = entity_of_ident(ident); + GB_ASSERT(e->kind == Entity_Label); + for_array(i, p->branch_blocks) { + lbBranchBlocks *b = &p->branch_blocks[i]; + if (b->label == e->Label.node) { + return *b; + } + } + + GB_PANIC("Unreachable"); + lbBranchBlocks empty = {}; + return empty; +} + + +lbTargetList *lb_push_target_list(lbProcedure *p, Ast *label, lbBlock *break_, lbBlock *continue_, lbBlock *fallthrough_) { + lbTargetList *tl = gb_alloc_item(heap_allocator(), lbTargetList); + tl->prev = p->target_list; + tl->break_ = break_; + tl->continue_ = continue_; + tl->fallthrough_ = fallthrough_; + p->target_list = tl; + + if (label != nullptr) { // Set label blocks + GB_ASSERT(label->kind == Ast_Label); + + for_array(i, p->branch_blocks) { + lbBranchBlocks *b = &p->branch_blocks[i]; + GB_ASSERT(b->label != nullptr && label != nullptr); + GB_ASSERT(b->label->kind == Ast_Label); + if (b->label == label) { + b->break_ = break_; + b->continue_ = continue_; + return tl; + } + } + + GB_PANIC("Unreachable"); + } + + return tl; +} + +void lb_pop_target_list(lbProcedure *p) { + p->target_list = p->target_list->prev; +} + + + + +void lb_open_scope(lbProcedure *p) { + p->scope_index += 1; +} + +void lb_close_scope(lbProcedure *p, lbDeferExitKind kind, lbBlock *block, bool pop_stack=true) { + lb_emit_defer_stmts(p, kind, block); + GB_ASSERT(p->scope_index > 0); + + // NOTE(bill): Remove `context`s made in that scope + while (p->context_stack.count > 0) { + lbContextData *ctx = &p->context_stack[p->context_stack.count-1]; + if (ctx->scope_index >= p->scope_index) { + array_pop(&p->context_stack); + } else { + break; + } + + } + + p->scope_index -= 1; +} + +void lb_build_when_stmt(lbProcedure *p, AstWhenStmt *ws) { + TypeAndValue tv = type_and_value_of_expr(ws->cond); + GB_ASSERT(is_type_boolean(tv.type)); + GB_ASSERT(tv.value.kind == ExactValue_Bool); + if (tv.value.value_bool) { + lb_build_stmt_list(p, ws->body->BlockStmt.stmts); + } else if (ws->else_stmt) { + switch (ws->else_stmt->kind) { + case Ast_BlockStmt: + lb_build_stmt_list(p, ws->else_stmt->BlockStmt.stmts); + break; + case Ast_WhenStmt: + lb_build_when_stmt(p, &ws->else_stmt->WhenStmt); + break; + default: + GB_PANIC("Invalid 'else' statement in 'when' statement"); + break; + } + } +} + + + +void lb_build_range_indexed(lbProcedure *p, lbValue expr, Type *val_type, lbValue count_ptr, + lbValue *val_, lbValue *idx_, lbBlock **loop_, lbBlock **done_) { + lbModule *m = p->module; + + lbValue count = {}; + Type *expr_type = base_type(type_deref(expr.type)); + switch (expr_type->kind) { + case Type_Array: + count = lb_const_int(m, t_int, expr_type->Array.count); + break; + } + + lbValue val = {}; + lbValue idx = {}; + lbBlock *loop = nullptr; + lbBlock *done = nullptr; + lbBlock *body = nullptr; + + + lbAddr index = lb_add_local_generated(p, t_int, false); + lb_addr_store(p, index, lb_const_int(m, t_int, cast(u64)-1)); + + loop = lb_create_block(p, "for.index.loop"); + lb_emit_jump(p, loop); + lb_start_block(p, loop); + + lbValue incr = lb_emit_arith(p, Token_Add, lb_addr_load(p, index), lb_const_int(m, t_int, 1), t_int); + lb_addr_store(p, index, incr); + + body = lb_create_block(p, "for.index.body"); + done = lb_create_block(p, "for.index.done"); + if (count.value == nullptr) { + GB_ASSERT(count_ptr.value != nullptr); + count = lb_emit_load(p, count_ptr); + } + lbValue cond = lb_emit_comp(p, Token_Lt, incr, count); + lb_emit_if(p, cond, body, done); + lb_start_block(p, body); + + idx = lb_addr_load(p, index); + switch (expr_type->kind) { + case Type_Array: { + if (val_type != nullptr) { + val = lb_emit_load(p, lb_emit_array_ep(p, expr, idx)); + } + break; + } + case Type_EnumeratedArray: { + if (val_type != nullptr) { + val = lb_emit_load(p, lb_emit_array_ep(p, expr, idx)); + // NOTE(bill): Override the idx value for the enumeration + Type *index_type = expr_type->EnumeratedArray.index; + if (compare_exact_values(Token_NotEq, expr_type->EnumeratedArray.min_value, exact_value_u64(0))) { + idx = lb_emit_arith(p, Token_Add, idx, lb_const_value(m, index_type, expr_type->EnumeratedArray.min_value), index_type); + } + } + break; + } + case Type_Slice: { + if (val_type != nullptr) { + lbValue elem = lb_slice_elem(p, expr); + val = lb_emit_load(p, lb_emit_ptr_offset(p, elem, idx)); + } + break; + } + case Type_DynamicArray: { + if (val_type != nullptr) { + lbValue elem = lb_emit_struct_ep(p, expr, 0); + elem = lb_emit_load(p, elem); + val = lb_emit_load(p, lb_emit_ptr_offset(p, elem, idx)); + } + break; + } + case Type_Map: { + lbAddr key = lb_add_local_generated(p, expr_type->Map.key, true); + + lbValue entries = lb_map_entries_ptr(p, expr); + lbValue elem = lb_emit_struct_ep(p, entries, 0); + elem = lb_emit_load(p, elem); + + lbValue entry = lb_emit_ptr_offset(p, elem, idx); + val = lb_emit_load(p, lb_emit_struct_ep(p, entry, 2)); + + lbValue hash = lb_emit_struct_ep(p, entry, 0); + if (is_type_string(expr_type->Map.key)) { + lbValue str = lb_emit_struct_ep(p, hash, 1); + lb_addr_store(p, key, lb_emit_load(p, str)); + } else { + lbValue hash_ptr = lb_emit_struct_ep(p, hash, 0); + hash_ptr = lb_emit_conv(p, hash_ptr, key.addr.type); + lb_addr_store(p, key, lb_emit_load(p, hash_ptr)); + } + + idx = lb_addr_load(p, key); + + break; + } + default: + GB_PANIC("Cannot do range_indexed of %s", type_to_string(expr_type)); + break; + } + + if (val_) *val_ = val; + if (idx_) *idx_ = idx; + if (loop_) *loop_ = loop; + if (done_) *done_ = done; +} + + +void lb_build_range_string(lbProcedure *p, lbValue expr, Type *val_type, + lbValue *val_, lbValue *idx_, lbBlock **loop_, lbBlock **done_) { + lbModule *m = p->module; + lbValue count = lb_const_int(m, t_int, 0); + Type *expr_type = base_type(expr.type); + switch (expr_type->kind) { + case Type_Basic: + count = lb_string_len(p, expr); + break; + default: + GB_PANIC("Cannot do range_string of %s", type_to_string(expr_type)); + break; + } + + lbValue val = {}; + lbValue idx = {}; + lbBlock *loop = nullptr; + lbBlock *done = nullptr; + lbBlock *body = nullptr; + + + lbAddr offset_ = lb_add_local_generated(p, t_int, false); + lb_addr_store(p, offset_, lb_const_int(m, t_int, 0)); + + loop = lb_create_block(p, "for.string.loop"); + lb_emit_jump(p, loop); + lb_start_block(p, loop); + + + + body = lb_create_block(p, "for.string.body"); + done = lb_create_block(p, "for.string.done"); + + lbValue offset = lb_addr_load(p, offset_); + lbValue cond = lb_emit_comp(p, Token_Lt, offset, count); + lb_emit_if(p, cond, body, done); + lb_start_block(p, body); + + + lbValue str_elem = lb_emit_ptr_offset(p, lb_string_elem(p, expr), offset); + lbValue str_len = lb_emit_arith(p, Token_Sub, count, offset, t_int); + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = lb_emit_string(p, str_elem, str_len); + lbValue rune_and_len = lb_emit_runtime_call(p, "string_decode_rune", args); + lbValue len = lb_emit_struct_ev(p, rune_and_len, 1); + lb_addr_store(p, offset_, lb_emit_arith(p, Token_Add, offset, len, t_int)); + + + idx = offset; + if (val_type != nullptr) { + val = lb_emit_struct_ev(p, rune_and_len, 0); + } + + if (val_) *val_ = val; + if (idx_) *idx_ = idx; + if (loop_) *loop_ = loop; + if (done_) *done_ = done; +} + + +void lb_build_range_interval(lbProcedure *p, AstBinaryExpr *node, Type *val_type, + lbValue *val_, lbValue *idx_, lbBlock **loop_, lbBlock **done_) { + lbModule *m = p->module; + + // TODO(bill): How should the behaviour work for lower and upper bounds checking for iteration? + // If 'lower' is changed, should 'val' do so or is that not typical behaviour? + + lbValue lower = lb_build_expr(p, node->left); + lbValue upper = {}; + + lbValue val = {}; + lbValue idx = {}; + lbBlock *loop = nullptr; + lbBlock *done = nullptr; + lbBlock *body = nullptr; + + if (val_type == nullptr) { + val_type = lower.type; + } + lbAddr value = lb_add_local_generated(p, val_type, false); + lb_addr_store(p, value, lower); + + lbAddr index = lb_add_local_generated(p, t_int, false); + lb_addr_store(p, index, lb_const_int(m, t_int, 0)); + + loop = lb_create_block(p, "for.interval.loop"); + lb_emit_jump(p, loop); + lb_start_block(p, loop); + + body = lb_create_block(p, "for.interval.body"); + done = lb_create_block(p, "for.interval.done"); + + + TokenKind op = Token_Lt; + switch (node->op.kind) { + case Token_Ellipsis: op = Token_LtEq; break; + case Token_RangeHalf: op = Token_Lt; break; + default: GB_PANIC("Invalid interval operator"); break; + } + + upper = lb_build_expr(p, node->right); + + lbValue curr_value = lb_addr_load(p, value); + lbValue cond = lb_emit_comp(p, op, curr_value, upper); + lb_emit_if(p, cond, body, done); + lb_start_block(p, body); + + val = lb_addr_load(p, value); + idx = lb_addr_load(p, index); + + lb_emit_increment(p, value.addr); + lb_emit_increment(p, index.addr); + + if (val_) *val_ = val; + if (idx_) *idx_ = idx; + if (loop_) *loop_ = loop; + if (done_) *done_ = done; +} + +void lb_build_range_enum(lbProcedure *p, Type *enum_type, Type *val_type, lbValue *val_, lbValue *idx_, lbBlock **loop_, lbBlock **done_) { + lbModule *m = p->module; + + Type *t = enum_type; + GB_ASSERT(is_type_enum(t)); + Type *enum_ptr = alloc_type_pointer(t); + t = base_type(t); + Type *core_elem = core_type(t); + GB_ASSERT(t->kind == Type_Enum); + i64 enum_count = t->Enum.fields.count; + lbValue max_count = lb_const_int(m, t_int, enum_count); + + lbValue ti = lb_type_info(m, t); + lbValue variant = lb_emit_struct_ep(p, ti, 3); + lbValue eti_ptr = lb_emit_conv(p, variant, t_type_info_enum_ptr); + lbValue values = lb_emit_load(p, lb_emit_struct_ep(p, eti_ptr, 2)); + lbValue values_data = lb_slice_elem(p, values); + + lbAddr offset_ = lb_add_local_generated(p, t_int, false); + lb_addr_store(p, offset_, lb_const_int(m, t_int, 0)); + + lbBlock *loop = lb_create_block(p, "for.enum.loop"); + lb_emit_jump(p, loop); + lb_start_block(p, loop); + + lbBlock *body = lb_create_block(p, "for.enum.body"); + lbBlock *done = lb_create_block(p, "for.enum.done"); + + lbValue offset = lb_addr_load(p, offset_); + lbValue cond = lb_emit_comp(p, Token_Lt, offset, max_count); + lb_emit_if(p, cond, body, done); + lb_start_block(p, body); + + lbValue val_ptr = lb_emit_ptr_offset(p, values_data, offset); + lb_emit_increment(p, offset_.addr); + + lbValue val = {}; + if (val_type != nullptr) { + GB_ASSERT(are_types_identical(enum_type, val_type)); + + if (is_type_integer(core_elem)) { + lbValue i = lb_emit_load(p, lb_emit_conv(p, val_ptr, t_i64_ptr)); + val = lb_emit_conv(p, i, t); + } else { + GB_PANIC("TODO(bill): enum core type %s", type_to_string(core_elem)); + } + } + + if (val_) *val_ = val; + if (idx_) *idx_ = offset; + if (loop_) *loop_ = loop; + if (done_) *done_ = done; +} + +void lb_build_range_tuple(lbProcedure *p, Ast *expr, Type *val0_type, Type *val1_type, + lbValue *val0_, lbValue *val1_, lbBlock **loop_, lbBlock **done_) { + lbBlock *loop = lb_create_block(p, "for.tuple.loop"); + lb_emit_jump(p, loop); + lb_start_block(p, loop); + + lbBlock *body = lb_create_block(p, "for.tuple.body"); + lbBlock *done = lb_create_block(p, "for.tuple.done"); + + lbValue tuple_value = lb_build_expr(p, expr); + Type *tuple = tuple_value.type; + GB_ASSERT(tuple->kind == Type_Tuple); + i32 tuple_count = cast(i32)tuple->Tuple.variables.count; + i32 cond_index = tuple_count-1; + + lbValue cond = lb_emit_struct_ev(p, tuple_value, cond_index); + lb_emit_if(p, cond, body, done); + lb_start_block(p, body); + + + if (val0_) *val0_ = lb_emit_struct_ev(p, tuple_value, 0); + if (val1_) *val1_ = lb_emit_struct_ev(p, tuple_value, 1); + if (loop_) *loop_ = loop; + if (done_) *done_ = done; +} + +void lb_build_range_stmt(lbProcedure *p, AstRangeStmt *rs) { + lb_open_scope(p); + + Type *val0_type = nullptr; + Type *val1_type = nullptr; + if (rs->val0 != nullptr && !is_blank_ident(rs->val0)) { + val0_type = type_of_expr(rs->val0); + } + if (rs->val1 != nullptr && !is_blank_ident(rs->val1)) { + val1_type = type_of_expr(rs->val1); + } + + if (val0_type != nullptr) { + Entity *e = entity_of_ident(rs->val0); + lb_add_local(p, e->type, e, true); + } + if (val1_type != nullptr) { + Entity *e = entity_of_ident(rs->val1); + lb_add_local(p, e->type, e, true); + } + + lbValue val = {}; + lbValue key = {}; + lbBlock *loop = nullptr; + lbBlock *done = nullptr; + Ast *expr = unparen_expr(rs->expr); + bool is_map = false; + + TypeAndValue tav = type_and_value_of_expr(expr); + + if (is_ast_range(expr)) { + lb_build_range_interval(p, &expr->BinaryExpr, val0_type, &val, &key, &loop, &done); + } else if (tav.mode == Addressing_Type) { + lb_build_range_enum(p, type_deref(tav.type), val0_type, &val, &key, &loop, &done); + } else { + Type *expr_type = type_of_expr(expr); + Type *et = base_type(type_deref(expr_type)); + switch (et->kind) { + case Type_Map: { + is_map = true; + gbAllocator a = heap_allocator(); + lbAddr addr = lb_build_addr(p, expr); + lbValue map = lb_addr_get_ptr(p, addr); + if (is_type_pointer(type_deref(lb_addr_type(addr)))) { + map = lb_addr_load(p, addr); + } + lbValue entries_ptr = lb_map_entries_ptr(p, map); + lbValue count_ptr = lb_emit_struct_ep(p, entries_ptr, 1); + lb_build_range_indexed(p, map, val1_type, count_ptr, &val, &key, &loop, &done); + break; + } + case Type_Array: { + lbValue array = lb_build_addr_ptr(p, expr); + if (is_type_pointer(type_deref(array.type))) { + array = lb_emit_load(p, array); + } + lbAddr count_ptr = lb_add_local_generated(p, t_int, false); + lb_addr_store(p, count_ptr, lb_const_int(p->module, t_int, et->Array.count)); + lb_build_range_indexed(p, array, val0_type, count_ptr.addr, &val, &key, &loop, &done); + break; + } + case Type_EnumeratedArray: { + lbValue array = lb_build_addr_ptr(p, expr); + if (is_type_pointer(type_deref(array.type))) { + array = lb_emit_load(p, array); + } + lbAddr count_ptr = lb_add_local_generated(p, t_int, false); + lb_addr_store(p, count_ptr, lb_const_int(p->module, t_int, et->EnumeratedArray.count)); + lb_build_range_indexed(p, array, val0_type, count_ptr.addr, &val, &key, &loop, &done); + break; + } + case Type_DynamicArray: { + lbValue count_ptr = {}; + lbValue array = lb_build_addr_ptr(p, expr); + if (is_type_pointer(type_deref(array.type))) { + array = lb_emit_load(p, array); + } + count_ptr = lb_emit_struct_ep(p, array, 1); + lb_build_range_indexed(p, array, val0_type, count_ptr, &val, &key, &loop, &done); + break; + } + case Type_Slice: { + lbValue count_ptr = {}; + lbValue slice = lb_build_expr(p, expr); + if (is_type_pointer(slice.type)) { + count_ptr = lb_emit_struct_ep(p, slice, 1); + slice = lb_emit_load(p, slice); + } else { + count_ptr = lb_add_local_generated(p, t_int, false).addr; + lb_emit_store(p, count_ptr, lb_slice_len(p, slice)); + } + lb_build_range_indexed(p, slice, val0_type, count_ptr, &val, &key, &loop, &done); + break; + } + case Type_Basic: { + lbValue string = lb_build_expr(p, expr); + if (is_type_pointer(string.type)) { + string = lb_emit_load(p, string); + } + if (is_type_untyped(expr_type)) { + lbAddr s = lb_add_local_generated(p, default_type(string.type), false); + lb_addr_store(p, s, string); + string = lb_addr_load(p, s); + } + Type *t = base_type(string.type); + GB_ASSERT(!is_type_cstring(t)); + lb_build_range_string(p, string, val0_type, &val, &key, &loop, &done); + break; + } + case Type_Tuple: + lb_build_range_tuple(p, expr, val0_type, val1_type, &val, &key, &loop, &done); + break; + default: + GB_PANIC("Cannot range over %s", type_to_string(expr_type)); + break; + } + } + + + if (is_map) { + if (val0_type) lb_store_range_stmt_val(p, rs->val0, key); + if (val1_type) lb_store_range_stmt_val(p, rs->val1, val); + } else { + if (val0_type) lb_store_range_stmt_val(p, rs->val0, val); + if (val1_type) lb_store_range_stmt_val(p, rs->val1, key); + } + + lb_push_target_list(p, rs->label, done, loop, nullptr); + + lb_build_stmt(p, rs->body); + + lb_close_scope(p, lbDeferExit_Default, nullptr); + lb_pop_target_list(p); + lb_emit_jump(p, loop); + lb_start_block(p, done); +} + +void lb_build_inline_range_stmt(lbProcedure *p, AstInlineRangeStmt *rs) { + lbModule *m = p->module; + + lb_open_scope(p); // Open scope here + + Type *val0_type = nullptr; + Type *val1_type = nullptr; + if (rs->val0 != nullptr && !is_blank_ident(rs->val0)) { + val0_type = type_of_expr(rs->val0); + } + if (rs->val1 != nullptr && !is_blank_ident(rs->val1)) { + val1_type = type_of_expr(rs->val1); + } + + if (val0_type != nullptr) { + Entity *e = entity_of_ident(rs->val0); + lb_add_local(p, e->type, e, true); + } + if (val1_type != nullptr) { + Entity *e = entity_of_ident(rs->val1); + lb_add_local(p, e->type, e, true); + } + + lbValue val = {}; + lbValue key = {}; + lbBlock *loop = nullptr; + lbBlock *done = nullptr; + Ast *expr = unparen_expr(rs->expr); + + TypeAndValue tav = type_and_value_of_expr(expr); + + if (is_ast_range(expr)) { + + lbAddr val0_addr = {}; + lbAddr val1_addr = {}; + if (val0_type) val0_addr = lb_build_addr(p, rs->val0); + if (val1_type) val1_addr = lb_build_addr(p, rs->val1); + + TokenKind op = expr->BinaryExpr.op.kind; + Ast *start_expr = expr->BinaryExpr.left; + Ast *end_expr = expr->BinaryExpr.right; + GB_ASSERT(start_expr->tav.mode == Addressing_Constant); + GB_ASSERT(end_expr->tav.mode == Addressing_Constant); + + ExactValue start = start_expr->tav.value; + ExactValue end = end_expr->tav.value; + if (op == Token_Ellipsis) { // .. [start, end] + ExactValue index = exact_value_i64(0); + for (ExactValue val = start; + compare_exact_values(Token_LtEq, val, end); + val = exact_value_increment_one(val), index = exact_value_increment_one(index)) { + + if (val0_type) lb_addr_store(p, val0_addr, lb_const_value(m, val0_type, val)); + if (val1_type) lb_addr_store(p, val1_addr, lb_const_value(m, val1_type, index)); + + lb_build_stmt(p, rs->body); + } + } else if (op == Token_RangeHalf) { // ..< [start, end) + ExactValue index = exact_value_i64(0); + for (ExactValue val = start; + compare_exact_values(Token_Lt, val, end); + val = exact_value_increment_one(val), index = exact_value_increment_one(index)) { + + if (val0_type) lb_addr_store(p, val0_addr, lb_const_value(m, val0_type, val)); + if (val1_type) lb_addr_store(p, val1_addr, lb_const_value(m, val1_type, index)); + + lb_build_stmt(p, rs->body); + } + } + + + } else if (tav.mode == Addressing_Type) { + GB_ASSERT(is_type_enum(type_deref(tav.type))); + Type *et = type_deref(tav.type); + Type *bet = base_type(et); + + lbAddr val0_addr = {}; + lbAddr val1_addr = {}; + if (val0_type) val0_addr = lb_build_addr(p, rs->val0); + if (val1_type) val1_addr = lb_build_addr(p, rs->val1); + + for_array(i, bet->Enum.fields) { + Entity *field = bet->Enum.fields[i]; + GB_ASSERT(field->kind == Entity_Constant); + if (val0_type) lb_addr_store(p, val0_addr, lb_const_value(m, val0_type, field->Constant.value)); + if (val1_type) lb_addr_store(p, val1_addr, lb_const_value(m, val1_type, exact_value_i64(i))); + + lb_build_stmt(p, rs->body); + } + } else { + lbAddr val0_addr = {}; + lbAddr val1_addr = {}; + if (val0_type) val0_addr = lb_build_addr(p, rs->val0); + if (val1_type) val1_addr = lb_build_addr(p, rs->val1); + + GB_ASSERT(expr->tav.mode == Addressing_Constant); + + Type *t = base_type(expr->tav.type); + + + switch (t->kind) { + case Type_Basic: + GB_ASSERT(is_type_string(t)); + { + ExactValue value = expr->tav.value; + GB_ASSERT(value.kind == ExactValue_String); + String str = value.value_string; + Rune codepoint = 0; + isize offset = 0; + do { + isize width = gb_utf8_decode(str.text+offset, str.len-offset, &codepoint); + if (val0_type) lb_addr_store(p, val0_addr, lb_const_value(m, val0_type, exact_value_i64(codepoint))); + if (val1_type) lb_addr_store(p, val1_addr, lb_const_value(m, val1_type, exact_value_i64(offset))); + lb_build_stmt(p, rs->body); + + offset += width; + } while (offset < str.len); + } + break; + case Type_Array: + if (t->Array.count > 0) { + lbValue val = lb_build_expr(p, expr); + lbValue val_addr = lb_address_from_load_or_generate_local(p, val); + + for (i64 i = 0; i < t->Array.count; i++) { + if (val0_type) { + // NOTE(bill): Due to weird legacy issues in LLVM, this needs to be an i32 + lbValue elem = lb_emit_array_epi(p, val_addr, cast(i32)i); + lb_addr_store(p, val0_addr, lb_emit_load(p, elem)); + } + if (val1_type) lb_addr_store(p, val1_addr, lb_const_value(m, val1_type, exact_value_i64(i))); + + lb_build_stmt(p, rs->body); + } + + } + break; + case Type_EnumeratedArray: + if (t->EnumeratedArray.count > 0) { + lbValue val = lb_build_expr(p, expr); + lbValue val_addr = lb_address_from_load_or_generate_local(p, val); + + for (i64 i = 0; i < t->EnumeratedArray.count; i++) { + if (val0_type) { + // NOTE(bill): Due to weird legacy issues in LLVM, this needs to be an i32 + lbValue elem = lb_emit_array_epi(p, val_addr, cast(i32)i); + lb_addr_store(p, val0_addr, lb_emit_load(p, elem)); + } + if (val1_type) { + ExactValue idx = exact_value_add(exact_value_i64(i), t->EnumeratedArray.min_value); + lb_addr_store(p, val1_addr, lb_const_value(m, val1_type, idx)); + } + + lb_build_stmt(p, rs->body); + } + + } + break; + default: + GB_PANIC("Invalid inline for type"); + break; + } + } + + + lb_close_scope(p, lbDeferExit_Default, nullptr); +} + + +void lb_build_switch_stmt(lbProcedure *p, AstSwitchStmt *ss) { + if (ss->init != nullptr) { + lb_build_stmt(p, ss->init); + } + lbValue tag = lb_const_bool(p->module, t_llvm_bool, true); + if (ss->tag != nullptr) { + tag = lb_build_expr(p, ss->tag); + } + lbBlock *done = lb_create_block(p, "switch.done"); // NOTE(bill): Append later + + ast_node(body, BlockStmt, ss->body); + + Array<Ast *> default_stmts = {}; + lbBlock *default_fall = nullptr; + lbBlock *default_block = nullptr; + + lbBlock *fall = nullptr; + + isize case_count = body->stmts.count; + for_array(i, body->stmts) { + Ast *clause = body->stmts[i]; + ast_node(cc, CaseClause, clause); + + lbBlock *body = fall; + + if (body == nullptr) { + body = lb_create_block(p, "switch.case.body"); + } + + fall = done; + if (i+1 < case_count) { + fall = lb_create_block(p, "switch.fall.body"); + } + + if (cc->list.count == 0) { + // default case + default_stmts = cc->stmts; + default_fall = fall; + default_block = body; + continue; + } + + lbBlock *next_cond = nullptr; + for_array(j, cc->list) { + Ast *expr = unparen_expr(cc->list[j]); + next_cond = lb_create_block(p, "switch.case.next"); + + lbValue cond = lb_const_bool(p->module, t_llvm_bool, false); + if (is_ast_range(expr)) { + ast_node(ie, BinaryExpr, expr); + TokenKind op = Token_Invalid; + switch (ie->op.kind) { + case Token_Ellipsis: op = Token_LtEq; break; + case Token_RangeHalf: op = Token_Lt; break; + default: GB_PANIC("Invalid interval operator"); break; + } + lbValue lhs = lb_build_expr(p, ie->left); + lbValue rhs = lb_build_expr(p, ie->right); + // TODO(bill): do short circuit here + lbValue cond_lhs = lb_emit_comp(p, Token_LtEq, lhs, tag); + lbValue cond_rhs = lb_emit_comp(p, op, tag, rhs); + cond = lb_emit_arith(p, Token_And, cond_lhs, cond_rhs, t_bool); + } else { + if (expr->tav.mode == Addressing_Type) { + GB_ASSERT(is_type_typeid(tag.type)); + lbValue e = lb_typeid(p->module, expr->tav.type); + e = lb_emit_conv(p, e, tag.type); + cond = lb_emit_comp(p, Token_CmpEq, tag, e); + } else { + cond = lb_emit_comp(p, Token_CmpEq, tag, lb_build_expr(p, expr)); + } + } + lb_emit_if(p, cond, body, next_cond); + lb_start_block(p, next_cond); + } + lb_start_block(p, body); + + lb_push_target_list(p, ss->label, done, nullptr, fall); + lb_open_scope(p); + lb_build_stmt_list(p, cc->stmts); + lb_close_scope(p, lbDeferExit_Default, body); + lb_pop_target_list(p); + + lb_emit_jump(p, done); + lb_start_block(p, next_cond); + } + + if (default_block != nullptr) { + lb_emit_jump(p, default_block); + lb_start_block(p, default_block); + + lb_push_target_list(p, ss->label, done, nullptr, default_fall); + lb_open_scope(p); + lb_build_stmt_list(p, default_stmts); + lb_close_scope(p, lbDeferExit_Default, default_block); + lb_pop_target_list(p); + } + + lb_emit_jump(p, done); + lb_start_block(p, done); +} + +void lb_store_type_case_implicit(lbProcedure *p, Ast *clause, lbValue value) { + Entity *e = implicit_entity_of_node(clause); + GB_ASSERT(e != nullptr); + if (e->flags & EntityFlag_Value) { + // by value + GB_ASSERT(are_types_identical(e->type, value.type)); + lbAddr x = lb_add_local(p, e->type, e, false); + lb_addr_store(p, x, value); + } else { + // by reference + GB_ASSERT(are_types_identical(e->type, type_deref(value.type))); + lb_add_entity(p->module, e, value); + } +} + +lbAddr lb_store_range_stmt_val(lbProcedure *p, Ast *stmt_val, lbValue value) { + Entity *e = entity_of_node(stmt_val); + if (e == nullptr) { + return {}; + } + + if ((e->flags & EntityFlag_Value) == 0) { + if (LLVMIsALoadInst(value.value)) { + lbValue ptr = lb_address_from_load_or_generate_local(p, value); + lb_add_entity(p->module, e, ptr); + return lb_addr(ptr); + } + } + + // by value + lbAddr addr = lb_add_local(p, e->type, e, false); + lb_addr_store(p, addr, value); + return addr; +} + +void lb_type_case_body(lbProcedure *p, Ast *label, Ast *clause, lbBlock *body, lbBlock *done) { + ast_node(cc, CaseClause, clause); + + lb_push_target_list(p, label, done, nullptr, nullptr); + lb_open_scope(p); + lb_build_stmt_list(p, cc->stmts); + lb_close_scope(p, lbDeferExit_Default, body); + lb_pop_target_list(p); + + lb_emit_jump(p, done); +} + + + +void lb_build_type_switch_stmt(lbProcedure *p, AstTypeSwitchStmt *ss) { + lbModule *m = p->module; + + ast_node(as, AssignStmt, ss->tag); + GB_ASSERT(as->lhs.count == 1); + GB_ASSERT(as->rhs.count == 1); + + lbValue parent = lb_build_expr(p, as->rhs[0]); + bool is_parent_ptr = is_type_pointer(parent.type); + + TypeSwitchKind switch_kind = check_valid_type_switch_type(parent.type); + GB_ASSERT(switch_kind != TypeSwitch_Invalid); + + lbValue parent_value = parent; + + lbValue parent_ptr = parent; + if (!is_parent_ptr) { + parent_ptr = lb_address_from_load_or_generate_local(p, parent); + } + + lbValue tag_index = {}; + lbValue union_data = {}; + if (switch_kind == TypeSwitch_Union) { + lbValue tag_ptr = lb_emit_union_tag_ptr(p, parent_ptr); + tag_index = lb_emit_load(p, tag_ptr); + union_data = lb_emit_conv(p, parent_ptr, t_rawptr); + } + + lbBlock *start_block = lb_create_block(p, "typeswitch.case.first"); + lb_emit_jump(p, start_block); + lb_start_block(p, start_block); + + // NOTE(bill): Append this later + lbBlock *done = lb_create_block(p, "typeswitch.done"); + Ast *default_ = nullptr; + + ast_node(body, BlockStmt, ss->body); + + gb_local_persist i32 weird_count = 0; + + for_array(i, body->stmts) { + Ast *clause = body->stmts[i]; + ast_node(cc, CaseClause, clause); + if (cc->list.count == 0) { + default_ = clause; + continue; + } + + lbBlock *body = lb_create_block(p, "typeswitch.body"); + lbBlock *next = nullptr; + Type *case_type = nullptr; + for_array(type_index, cc->list) { + next = lb_create_block(p, "typeswitch.next"); + case_type = type_of_expr(cc->list[type_index]); + lbValue cond = {}; + if (switch_kind == TypeSwitch_Union) { + Type *ut = base_type(type_deref(parent.type)); + lbValue variant_tag = lb_const_union_tag(m, ut, case_type); + cond = lb_emit_comp(p, Token_CmpEq, tag_index, variant_tag); + } else if (switch_kind == TypeSwitch_Any) { + lbValue any_typeid = lb_emit_load(p, lb_emit_struct_ep(p, parent_ptr, 1)); + lbValue case_typeid = lb_typeid(m, case_type); + cond = lb_emit_comp(p, Token_CmpEq, any_typeid, case_typeid); + } + GB_ASSERT(cond.value != nullptr); + + lb_emit_if(p, cond, body, next); + lb_start_block(p, next); + } + + Entity *case_entity = implicit_entity_of_node(clause); + + lbValue value = parent_value; + + lb_start_block(p, body); + + bool by_reference = (case_entity->flags & EntityFlag_Value) == 0; + + if (cc->list.count == 1) { + lbValue data = {}; + if (switch_kind == TypeSwitch_Union) { + data = union_data; + } else if (switch_kind == TypeSwitch_Any) { + lbValue any_data = lb_emit_load(p, lb_emit_struct_ep(p, parent_ptr, 0)); + data = any_data; + } + + Type *ct = case_entity->type; + Type *ct_ptr = alloc_type_pointer(ct); + + value = lb_emit_conv(p, data, ct_ptr); + if (!by_reference) { + value = lb_emit_load(p, value); + } + } + + lb_store_type_case_implicit(p, clause, value); + lb_type_case_body(p, ss->label, clause, body, done); + lb_start_block(p, next); + } + + if (default_ != nullptr) { + lb_store_type_case_implicit(p, default_, parent_value); + lb_type_case_body(p, ss->label, default_, p->curr_block, done); + } else { + lb_emit_jump(p, done); + } + lb_start_block(p, done); +} + + +lbValue lb_emit_logical_binary_expr(lbProcedure *p, TokenKind op, Ast *left, Ast *right, Type *type) { + lbModule *m = p->module; + + lbBlock *rhs = lb_create_block(p, "logical.cmp.rhs"); + lbBlock *done = lb_create_block(p, "logical.cmp.done"); + + type = default_type(type); + + lbValue short_circuit = {}; + if (op == Token_CmpAnd) { + lb_build_cond(p, left, rhs, done); + short_circuit = lb_const_bool(m, type, false); + } else if (op == Token_CmpOr) { + lb_build_cond(p, left, done, rhs); + short_circuit = lb_const_bool(m, type, true); + } + + if (rhs->preds.count == 0) { + lb_start_block(p, done); + return short_circuit; + } + + if (done->preds.count == 0) { + lb_start_block(p, rhs); + return lb_build_expr(p, right); + } + + Array<LLVMValueRef> incoming_values = {}; + Array<LLVMBasicBlockRef> incoming_blocks = {}; + array_init(&incoming_values, heap_allocator(), done->preds.count+1); + array_init(&incoming_blocks, heap_allocator(), done->preds.count+1); + + for_array(i, done->preds) { + incoming_values[i] = short_circuit.value; + incoming_blocks[i] = done->preds[i]->block; + } + + lb_start_block(p, rhs); + lbValue edge = lb_build_expr(p, right); + + incoming_values[done->preds.count] = edge.value; + incoming_blocks[done->preds.count] = p->curr_block->block; + + lb_emit_jump(p, done); + lb_start_block(p, done); + + lbValue res = {}; + res.type = type; + res.value = LLVMBuildPhi(p->builder, lb_type(m, type), ""); + GB_ASSERT(incoming_values.count == incoming_blocks.count); + LLVMAddIncoming(res.value, incoming_values.data, incoming_blocks.data, cast(unsigned)incoming_values.count); + + return res; +} + + +void lb_build_stmt(lbProcedure *p, Ast *node) { + switch (node->kind) { + case_ast_node(bs, EmptyStmt, node); + case_end; + + case_ast_node(us, UsingStmt, node); + case_end; + + case_ast_node(ws, WhenStmt, node); + lb_build_when_stmt(p, ws); + case_end; + + + case_ast_node(bs, BlockStmt, node); + if (bs->label != nullptr) { + lbBlock *done = lb_create_block(p, "block.done"); + lbTargetList *tl = lb_push_target_list(p, bs->label, done, nullptr, nullptr); + tl->is_block = true; + + lb_open_scope(p); + lb_build_stmt_list(p, bs->stmts); + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_emit_jump(p, done); + lb_start_block(p, done); + } else { + lb_open_scope(p); + lb_build_stmt_list(p, bs->stmts); + lb_close_scope(p, lbDeferExit_Default, nullptr); + } + case_end; + + case_ast_node(vd, ValueDecl, node); + if (!vd->is_mutable) { + return; + } + + bool is_static = false; + if (vd->names.count > 0) { + Entity *e = entity_of_ident(vd->names[0]); + if (e->flags & EntityFlag_Static) { + // NOTE(bill): If one of the entities is static, they all are + is_static = true; + } + } + + if (is_static) { + for_array(i, vd->names) { + lbValue value = {}; + if (vd->values.count > 0) { + GB_ASSERT(vd->names.count == vd->values.count); + Ast *ast_value = vd->values[i]; + GB_ASSERT(ast_value->tav.mode == Addressing_Constant || + ast_value->tav.mode == Addressing_Invalid); + + value = lb_const_value(p->module, ast_value->tav.type, ast_value->tav.value); + } + + Ast *ident = vd->names[i]; + GB_ASSERT(!is_blank_ident(ident)); + Entity *e = entity_of_ident(ident); + GB_ASSERT(e->flags & EntityFlag_Static); + String name = e->token.string; + + String mangled_name = {}; + { + gbString str = gb_string_make_length(heap_allocator(), p->name.text, p->name.len); + str = gb_string_appendc(str, "-"); + str = gb_string_append_fmt(str, ".%.*s-%llu", LIT(name), cast(long long)e->id); + mangled_name.text = cast(u8 *)str; + mangled_name.len = gb_string_length(str); + } + + char *c_name = alloc_cstring(heap_allocator(), mangled_name); + + LLVMValueRef global = LLVMAddGlobal(p->module->mod, lb_type(p->module, e->type), c_name); + if (value.value != nullptr) { + LLVMSetInitializer(global, value.value); + } else { + LLVMSetInitializer(global, LLVMConstNull(lb_type(p->module, e->type))); + } + if (e->Variable.thread_local_model != "") { + LLVMSetThreadLocal(global, true); + + String m = e->Variable.thread_local_model; + LLVMThreadLocalMode mode = LLVMGeneralDynamicTLSModel; + if (m == "default") { + mode = LLVMGeneralDynamicTLSModel; + } else if (m == "localdynamic") { + mode = LLVMLocalDynamicTLSModel; + } else if (m == "initialexec") { + mode = LLVMInitialExecTLSModel; + } else if (m == "localexec") { + mode = LLVMLocalExecTLSModel; + } else { + GB_PANIC("Unhandled thread local mode %.*s", LIT(m)); + } + LLVMSetThreadLocalMode(global, mode); + } else { + LLVMSetLinkage(global, LLVMInternalLinkage); + } + + + lbValue global_val = {global, alloc_type_pointer(e->type)}; + lb_add_entity(p->module, e, global_val); + lb_add_member(p->module, mangled_name, global_val); + } + return; + } + + + if (vd->values.count == 0) { // declared and zero-initialized + for_array(i, vd->names) { + Ast *name = vd->names[i]; + if (!is_blank_ident(name)) { + Entity *e = entity_of_ident(name); + lb_add_local(p, e->type, e, true); + } + } + } else { // Tuple(s) + auto lvals = array_make<lbAddr>(heap_allocator(), 0, vd->names.count); + auto inits = array_make<lbValue>(heap_allocator(), 0, vd->names.count); + + for_array(i, vd->names) { + Ast *name = vd->names[i]; + lbAddr lval = {}; + if (!is_blank_ident(name)) { + Entity *e = entity_of_ident(name); + lval = lb_add_local(p, e->type, e, false); + } + array_add(&lvals, lval); + } + + for_array(i, vd->values) { + lbValue init = lb_build_expr(p, vd->values[i]); + Type *t = init.type; + if (t->kind == Type_Tuple) { + for_array(i, t->Tuple.variables) { + Entity *e = t->Tuple.variables[i]; + lbValue v = lb_emit_struct_ev(p, init, cast(i32)i); + array_add(&inits, v); + } + } else { + array_add(&inits, init); + } + } + + + for_array(i, inits) { + lbAddr lval = lvals[i]; + lbValue init = inits[i]; + lb_addr_store(p, lval, init); + } + } + case_end; + + case_ast_node(as, AssignStmt, node); + if (as->op.kind == Token_Eq) { + auto lvals = array_make<lbAddr>(heap_allocator(), 0, as->lhs.count); + + for_array(i, as->lhs) { + Ast *lhs = as->lhs[i]; + lbAddr lval = {}; + if (!is_blank_ident(lhs)) { + lval = lb_build_addr(p, lhs); + } + array_add(&lvals, lval); + } + + if (as->lhs.count == as->rhs.count) { + if (as->lhs.count == 1) { + lbAddr lval = lvals[0]; + Ast *rhs = as->rhs[0]; + lbValue init = lb_build_expr(p, rhs); + lb_addr_store(p, lvals[0], init); + } else { + auto inits = array_make<lbValue>(heap_allocator(), 0, lvals.count); + + for_array(i, as->rhs) { + lbValue init = lb_build_expr(p, as->rhs[i]); + array_add(&inits, init); + } + + for_array(i, inits) { + lbAddr lval = lvals[i]; + lbValue init = inits[i]; + lb_addr_store(p, lval, init); + } + } + } else { + auto inits = array_make<lbValue>(heap_allocator(), 0, lvals.count); + + for_array(i, as->rhs) { + lbValue init = lb_build_expr(p, as->rhs[i]); + Type *t = init.type; + // TODO(bill): refactor for code reuse as this is repeated a bit + if (t->kind == Type_Tuple) { + for_array(i, t->Tuple.variables) { + Entity *e = t->Tuple.variables[i]; + lbValue v = lb_emit_struct_ev(p, init, cast(i32)i); + array_add(&inits, v); + } + } else { + array_add(&inits, init); + } + } + + for_array(i, inits) { + lbAddr lval = lvals[i]; + lbValue init = inits[i]; + lb_addr_store(p, lval, init); + } + } + } else { + // NOTE(bill): Only 1 += 1 is allowed, no tuples + // +=, -=, etc + i32 op = cast(i32)as->op.kind; + op += Token_Add - Token_AddEq; // Convert += to + + if (op == Token_CmpAnd || op == Token_CmpOr) { + Type *type = as->lhs[0]->tav.type; + lbValue new_value = lb_emit_logical_binary_expr(p, cast(TokenKind)op, as->lhs[0], as->rhs[0], type); + + lbAddr lhs = lb_build_addr(p, as->lhs[0]); + lb_addr_store(p, lhs, new_value); + } else { + lbAddr lhs = lb_build_addr(p, as->lhs[0]); + lbValue value = lb_build_expr(p, as->rhs[0]); + + lbValue old_value = lb_addr_load(p, lhs); + Type *type = old_value.type; + + lbValue change = lb_emit_conv(p, value, type); + lbValue new_value = lb_emit_arith(p, cast(TokenKind)op, old_value, change, type); + lb_addr_store(p, lhs, new_value); + } + return; + } + case_end; + + case_ast_node(es, ExprStmt, node); + lb_build_expr(p, es->expr); + case_end; + + case_ast_node(ds, DeferStmt, node); + isize scope_index = p->scope_index; + lb_add_defer_node(p, scope_index, ds->stmt); + case_end; + + case_ast_node(rs, ReturnStmt, node); + lbValue res = {}; + + TypeTuple *tuple = &p->type->Proc.results->Tuple; + isize return_count = p->type->Proc.result_count; + isize res_count = rs->results.count; + + if (return_count == 0) { + // No return values + LLVMBuildRetVoid(p->builder); + return; + } else if (return_count == 1) { + Entity *e = tuple->variables[0]; + if (res_count == 0) { + lbValue *found = map_get(&p->module->values, hash_entity(e)); + GB_ASSERT(found); + res = lb_emit_load(p, *found); + } else { + res = lb_build_expr(p, rs->results[0]); + res = lb_emit_conv(p, res, e->type); + } + } else { + auto results = array_make<lbValue>(heap_allocator(), 0, return_count); + + if (res_count != 0) { + for (isize res_index = 0; res_index < res_count; res_index++) { + lbValue res = lb_build_expr(p, rs->results[res_index]); + Type *t = res.type; + if (t->kind == Type_Tuple) { + for_array(i, t->Tuple.variables) { + Entity *e = t->Tuple.variables[i]; + lbValue v = lb_emit_struct_ev(p, res, cast(i32)i); + array_add(&results, v); + } + } else { + array_add(&results, res); + } + } + } else { + for (isize res_index = 0; res_index < return_count; res_index++) { + Entity *e = tuple->variables[res_index]; + lbValue *found = map_get(&p->module->values, hash_entity(e)); + GB_ASSERT(found); + lbValue res = lb_emit_load(p, *found); + array_add(&results, res); + } + } + + GB_ASSERT(results.count == return_count); + + Type *ret_type = p->type->Proc.results; + // NOTE(bill): Doesn't need to be zero because it will be initialized in the loops + res = lb_add_local_generated(p, ret_type, false).addr; + for_array(i, results) { + Entity *e = tuple->variables[i]; + lbValue field = lb_emit_struct_ep(p, res, cast(i32)i); + lbValue val = lb_emit_conv(p, results[i], e->type); + lb_emit_store(p, field, val); + } + + res = lb_emit_load(p, res); + } + + lb_emit_defer_stmts(p, lbDeferExit_Return, nullptr); + + if (p->type->Proc.return_by_pointer) { + if (res.value != nullptr) { + lb_addr_store(p, p->return_ptr, res); + } else { + lb_addr_store(p, p->return_ptr, lb_const_nil(p->module, p->type->Proc.abi_compat_result_type)); + } + LLVMBuildRetVoid(p->builder); + } else { + GB_ASSERT_MSG(res.value != nullptr, "%.*s", LIT(p->name)); + Type *abi_rt = p->type->Proc.abi_compat_result_type; + if (!are_types_identical(res.type, abi_rt)) { + res = lb_emit_transmute(p, res, abi_rt); + } + LLVMBuildRet(p->builder, res.value); + } + case_end; + + case_ast_node(is, IfStmt, node); + lb_open_scope(p); // Scope #1 + + if (is->init != nullptr) { + // TODO(bill): Should this have a separate block to begin with? + #if 1 + lbBlock *init = lb_create_block(p, "if.init"); + lb_emit_jump(p, init); + lb_start_block(p, init); + #endif + lb_build_stmt(p, is->init); + } + lbBlock *then = lb_create_block(p, "if.then"); + lbBlock *done = lb_create_block(p, "if.done"); + lbBlock *else_ = done; + if (is->else_stmt != nullptr) { + else_ = lb_create_block(p, "if.else"); + } + + lb_build_cond(p, is->cond, then, else_); + lb_start_block(p, then); + + if (is->label != nullptr) { + lbTargetList *tl = lb_push_target_list(p, is->label, done, nullptr, nullptr); + tl->is_block = true; + } + + lb_build_stmt(p, is->body); + + lb_emit_jump(p, done); + + if (is->else_stmt != nullptr) { + lb_start_block(p, else_); + + lb_open_scope(p); + lb_build_stmt(p, is->else_stmt); + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_emit_jump(p, done); + } + + + lb_start_block(p, done); + lb_close_scope(p, lbDeferExit_Default, nullptr); + case_end; + + case_ast_node(fs, ForStmt, node); + lb_open_scope(p); // Open Scope here + + if (fs->init != nullptr) { + #if 1 + lbBlock *init = lb_create_block(p, "for.init"); + lb_emit_jump(p, init); + lb_start_block(p, init); + #endif + lb_build_stmt(p, fs->init); + } + lbBlock *body = lb_create_block(p, "for.body"); + lbBlock *done = lb_create_block(p, "for.done"); // NOTE(bill): Append later + lbBlock *loop = body; + if (fs->cond != nullptr) { + loop = lb_create_block(p, "for.loop"); + } + lbBlock *post = loop; + if (fs->post != nullptr) { + post = lb_create_block(p, "for.post"); + } + + + lb_emit_jump(p, loop); + lb_start_block(p, loop); + + if (loop != body) { + lb_build_cond(p, fs->cond, body, done); + lb_start_block(p, body); + } + + lb_push_target_list(p, fs->label, done, post, nullptr); + + lb_build_stmt(p, fs->body); + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_pop_target_list(p); + + lb_emit_jump(p, post); + + if (fs->post != nullptr) { + lb_start_block(p, post); + lb_build_stmt(p, fs->post); + lb_emit_jump(p, loop); + } + + lb_start_block(p, done); + case_end; + + case_ast_node(rs, RangeStmt, node); + lb_build_range_stmt(p, rs); + case_end; + + case_ast_node(rs, InlineRangeStmt, node); + lb_build_inline_range_stmt(p, rs); + case_end; + + case_ast_node(ss, SwitchStmt, node); + lb_build_switch_stmt(p, ss); + case_end; + + case_ast_node(ss, TypeSwitchStmt, node); + lb_build_type_switch_stmt(p, ss); + case_end; + + case_ast_node(bs, BranchStmt, node); + lbBlock *block = nullptr; + + if (bs->label != nullptr) { + lbBranchBlocks bb = lb_lookup_branch_blocks(p, bs->label); + switch (bs->token.kind) { + case Token_break: block = bb.break_; break; + case Token_continue: block = bb.continue_; break; + case Token_fallthrough: + GB_PANIC("fallthrough cannot have a label"); + break; + } + } else { + for (lbTargetList *t = p->target_list; t != nullptr && block == nullptr; t = t->prev) { + if (t->is_block) { + continue; + } + + switch (bs->token.kind) { + case Token_break: block = t->break_; break; + case Token_continue: block = t->continue_; break; + case Token_fallthrough: block = t->fallthrough_; break; + } + } + } + if (block != nullptr) { + lb_emit_defer_stmts(p, lbDeferExit_Branch, block); + } + lb_emit_jump(p, block); + case_end; + } +} + +lbValue lb_emit_select(lbProcedure *p, lbValue cond, lbValue x, lbValue y) { + cond = lb_emit_conv(p, cond, t_llvm_bool); + lbValue res = {}; + res.value = LLVMBuildSelect(p->builder, cond.value, x.value, y.value, ""); + res.type = x.type; + return res; +} + +lbValue lb_const_nil(lbModule *m, Type *type) { + LLVMValueRef v = LLVMConstNull(lb_type(m, type)); + return lbValue{v, type}; +} + +lbValue lb_const_undef(lbModule *m, Type *type) { + LLVMValueRef v = LLVMGetUndef(lb_type(m, type)); + return lbValue{v, type}; +} + + +lbValue lb_const_int(lbModule *m, Type *type, u64 value) { + lbValue res = {}; + res.value = LLVMConstInt(lb_type(m, type), cast(unsigned long long)value, !is_type_unsigned(type)); + res.type = type; + return res; +} + +lbValue lb_const_string(lbModule *m, String const &value) { + return lb_const_value(m, t_string, exact_value_string(value)); +} + + +lbValue lb_const_bool(lbModule *m, Type *type, bool value) { + lbValue res = {}; + res.value = LLVMConstInt(lb_type(m, type), value, false); + res.type = type; + return res; +} + +LLVMValueRef lb_const_f32(lbModule *m, f32 f, Type *type=t_f32) { + u32 u = bit_cast<u32>(f); + LLVMValueRef i = LLVMConstInt(LLVMInt32TypeInContext(m->ctx), u, false); + return LLVMConstBitCast(i, lb_type(m, type)); +} + +lbValue lb_emit_min(lbProcedure *p, Type *t, lbValue x, lbValue y) { + x = lb_emit_conv(p, x, t); + y = lb_emit_conv(p, y, t); + + if (is_type_float(t)) { + gbAllocator a = heap_allocator(); + i64 sz = 8*type_size_of(t); + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = x; + args[1] = y; + switch (sz) { + case 32: return lb_emit_runtime_call(p, "min_f32", args); + case 64: return lb_emit_runtime_call(p, "min_f64", args); + } + GB_PANIC("Unknown float type"); + } + return lb_emit_select(p, lb_emit_comp(p, Token_Lt, x, y), x, y); +} +lbValue lb_emit_max(lbProcedure *p, Type *t, lbValue x, lbValue y) { + x = lb_emit_conv(p, x, t); + y = lb_emit_conv(p, y, t); + + if (is_type_float(t)) { + gbAllocator a = heap_allocator(); + i64 sz = 8*type_size_of(t); + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = x; + args[1] = y; + switch (sz) { + case 32: return lb_emit_runtime_call(p, "max_f32", args); + case 64: return lb_emit_runtime_call(p, "max_f64", args); + } + GB_PANIC("Unknown float type"); + } + return lb_emit_select(p, lb_emit_comp(p, Token_Gt, x, y), x, y); +} + + +lbValue lb_emit_clamp(lbProcedure *p, Type *t, lbValue x, lbValue min, lbValue max) { + lbValue z = {}; + z = lb_emit_max(p, t, x, min); + z = lb_emit_min(p, t, z, max); + return z; +} + + + +LLVMValueRef lb_find_or_add_entity_string_ptr(lbModule *m, String const &str) { + HashKey key = hash_string(str); + LLVMValueRef *found = map_get(&m->const_strings, key); + if (found != nullptr) { + return *found; + } else { + LLVMValueRef indices[2] = {llvm_zero32(m), llvm_zero32(m)}; + LLVMValueRef data = LLVMConstStringInContext(m->ctx, + cast(char const *)str.text, + cast(unsigned)str.len, + false); + + + isize max_len = 7+8+1; + char *name = gb_alloc_array(heap_allocator(), char, max_len); + isize len = gb_snprintf(name, max_len, "csbs$%x", m->global_array_index); + len -= 1; + m->global_array_index++; + + LLVMValueRef global_data = LLVMAddGlobal(m->mod, LLVMTypeOf(data), name); + LLVMSetInitializer(global_data, data); + + LLVMValueRef ptr = LLVMConstInBoundsGEP(global_data, indices, 2); + map_set(&m->const_strings, key, ptr); + return ptr; + } +} + +lbValue lb_find_or_add_entity_string(lbModule *m, String const &str) { + LLVMValueRef ptr = lb_find_or_add_entity_string_ptr(m, str); + LLVMValueRef str_len = LLVMConstInt(lb_type(m, t_int), str.len, true); + LLVMValueRef values[2] = {ptr, str_len}; + + lbValue res = {}; + res.value = LLVMConstNamedStruct(lb_type(m, t_string), values, 2); + res.type = t_string; + return res; +} + +lbValue lb_find_or_add_entity_string_byte_slice(lbModule *m, String const &str) { + LLVMValueRef indices[2] = {llvm_zero32(m), llvm_zero32(m)}; + LLVMValueRef data = LLVMConstStringInContext(m->ctx, + cast(char const *)str.text, + cast(unsigned)str.len, + false); + + + char *name = nullptr; + { + isize max_len = 7+8+1; + name = gb_alloc_array(heap_allocator(), char, max_len); + isize len = gb_snprintf(name, max_len, "csbs$%x", m->global_array_index); + len -= 1; + m->global_array_index++; + } + LLVMValueRef global_data = LLVMAddGlobal(m->mod, LLVMTypeOf(data), name); + LLVMSetInitializer(global_data, data); + + LLVMValueRef ptr = LLVMConstInBoundsGEP(global_data, indices, 2); + LLVMValueRef len = LLVMConstInt(lb_type(m, t_int), str.len, true); + LLVMValueRef values[2] = {ptr, len}; + + lbValue res = {}; + res.value = LLVMConstNamedStruct(lb_type(m, t_u8_slice), values, 2); + res.type = t_u8_slice; + return res; +} + +isize lb_type_info_index(CheckerInfo *info, Type *type, bool err_on_not_found=true) { + isize index = type_info_index(info, type, false); + if (index >= 0) { + auto *set = &info->minimum_dependency_type_info_set; + for_array(i, set->entries) { + if (set->entries[i].ptr == index) { + return i+1; + } + } + } + if (err_on_not_found) { + GB_PANIC("NOT FOUND lb_type_info_index %s @ index %td", type_to_string(type), index); + } + return -1; +} + +lbValue lb_typeid(lbModule *m, Type *type, Type *typeid_type) { + type = default_type(type); + + u64 id = cast(u64)lb_type_info_index(m->info, type); + GB_ASSERT(id >= 0); + + u64 kind = Typeid_Invalid; + u64 named = is_type_named(type) && type->kind != Type_Basic; + u64 special = 0; + u64 reserved = 0; + + Type *bt = base_type(type); + TypeKind tk = bt->kind; + switch (tk) { + case Type_Basic: { + u32 flags = bt->Basic.flags; + if (flags & BasicFlag_Boolean) kind = Typeid_Boolean; + if (flags & BasicFlag_Integer) kind = Typeid_Integer; + if (flags & BasicFlag_Unsigned) kind = Typeid_Integer; + if (flags & BasicFlag_Float) kind = Typeid_Float; + if (flags & BasicFlag_Complex) kind = Typeid_Complex; + if (flags & BasicFlag_Pointer) kind = Typeid_Pointer; + if (flags & BasicFlag_String) kind = Typeid_String; + if (flags & BasicFlag_Rune) kind = Typeid_Rune; + } break; + case Type_Pointer: kind = Typeid_Pointer; break; + case Type_Array: kind = Typeid_Array; break; + case Type_EnumeratedArray: kind = Typeid_Enumerated_Array; break; + case Type_Slice: kind = Typeid_Slice; break; + case Type_DynamicArray: kind = Typeid_Dynamic_Array; break; + case Type_Map: kind = Typeid_Map; break; + case Type_Struct: kind = Typeid_Struct; break; + case Type_Enum: kind = Typeid_Enum; break; + case Type_Union: kind = Typeid_Union; break; + case Type_Tuple: kind = Typeid_Tuple; break; + case Type_Proc: kind = Typeid_Procedure; break; + case Type_BitField: kind = Typeid_Bit_Field; break; + case Type_BitSet: kind = Typeid_Bit_Set; break; + } + + if (is_type_cstring(type)) { + special = 1; + } else if (is_type_integer(type) && !is_type_unsigned(type)) { + special = 1; + } + + u64 data = 0; + if (build_context.word_size == 4) { + data |= (id &~ (1u<<24)) << 0u; // index + data |= (kind &~ (1u<<5)) << 24u; // kind + data |= (named &~ (1u<<1)) << 29u; // kind + data |= (special &~ (1u<<1)) << 30u; // kind + data |= (reserved &~ (1u<<1)) << 31u; // kind + } else { + GB_ASSERT(build_context.word_size == 8); + data |= (id &~ (1ull<<56)) << 0ul; // index + data |= (kind &~ (1ull<<5)) << 56ull; // kind + data |= (named &~ (1ull<<1)) << 61ull; // kind + data |= (special &~ (1ull<<1)) << 62ull; // kind + data |= (reserved &~ (1ull<<1)) << 63ull; // kind + } + + + lbValue res = {}; + res.value = LLVMConstInt(lb_type(m, typeid_type), data, false); + res.type = typeid_type; + return res; +} + +lbValue lb_type_info(lbModule *m, Type *type) { + type = default_type(type); + + isize index = lb_type_info_index(m->info, type); + GB_ASSERT(index >= 0); + + LLVMTypeRef it = lb_type(m, t_int); + LLVMValueRef indices[2] = { + LLVMConstInt(it, 0, false), + LLVMConstInt(it, index, true), + }; + + lbValue value = {}; + value.value = LLVMConstGEP(lb_global_type_info_data.addr.value, indices, gb_count_of(indices)); + value.type = t_type_info_ptr; + return value; +} + + +lbValue lb_const_value(lbModule *m, Type *type, ExactValue value) { + LLVMContextRef ctx = m->ctx; + + type = default_type(type); + Type *original_type = type; + + lbValue res = {}; + res.type = original_type; + type = core_type(type); + value = convert_exact_value_for_type(value, type); + + if (value.kind == ExactValue_Typeid) { + return lb_typeid(m, value.value_typeid, original_type); + } + + if (value.kind == ExactValue_Invalid) { + return lb_const_nil(m, type); + } + + // GB_ASSERT_MSG(is_type_typed(type), "%s", type_to_string(type)); + + if (is_type_slice(type)) { + if (value.kind == ExactValue_String) { + GB_ASSERT(is_type_u8_slice(type)); + res.value = lb_find_or_add_entity_string_byte_slice(m, value.value_string).value; + return res; + } else { + ast_node(cl, CompoundLit, value.value_compound); + + isize count = cl->elems.count; + if (count == 0) { + return lb_const_nil(m, type); + } + count = gb_max(cl->max_count, count); + Type *elem = base_type(type)->Slice.elem; + Type *t = alloc_type_array(elem, count); + lbValue backing_array = lb_const_value(m, t, value); + + + isize max_len = 7+8+1; + char *str = gb_alloc_array(heap_allocator(), char, max_len); + isize len = gb_snprintf(str, max_len, "csba$%x", m->global_array_index); + m->global_array_index++; + + String name = make_string(cast(u8 *)str, len-1); + + Entity *e = alloc_entity_constant(nullptr, make_token_ident(name), t, value); + LLVMValueRef global_data = LLVMAddGlobal(m->mod, lb_type(m, t), str); + LLVMSetInitializer(global_data, backing_array.value); + + lbValue g = {}; + g.value = global_data; + g.type = t; + + lb_add_entity(m, e, g); + lb_add_member(m, name, g); + + { + LLVMValueRef indices[2] = {llvm_zero32(m), llvm_zero32(m)}; + LLVMValueRef ptr = LLVMConstInBoundsGEP(global_data, indices, 2); + LLVMValueRef len = LLVMConstInt(lb_type(m, t_int), count, true); + LLVMValueRef values[2] = {ptr, len}; + + res.value = LLVMConstNamedStruct(lb_type(m, original_type), values, 2); + return res; + } + + } + } else if (is_type_array(type) && value.kind == ExactValue_String && !is_type_u8(core_array_type(type))) { + LLVMValueRef data = LLVMConstStringInContext(ctx, + cast(char const *)value.value_string.text, + cast(unsigned)value.value_string.len, + false); + res.value = data; + return res; + } else if (is_type_array(type) && + value.kind != ExactValue_Invalid && + value.kind != ExactValue_String && + value.kind != ExactValue_Compound) { + + i64 count = type->Array.count; + Type *elem = type->Array.elem; + + + lbValue single_elem = lb_const_value(m, elem, value); + + LLVMValueRef *elems = gb_alloc_array(heap_allocator(), LLVMValueRef, count); + for (i64 i = 0; i < count; i++) { + elems[i] = single_elem.value; + } + + res.value = LLVMConstArray(lb_type(m, elem), elems, cast(unsigned)count); + return res; + } + + switch (value.kind) { + case ExactValue_Invalid: + res.value = LLVMConstNull(lb_type(m, original_type)); + return res; + case ExactValue_Bool: + res.value = LLVMConstInt(lb_type(m, original_type), value.value_bool, false); + return res; + case ExactValue_String: + { + LLVMValueRef ptr = lb_find_or_add_entity_string_ptr(m, value.value_string); + lbValue res = {}; + res.type = default_type(original_type); + if (is_type_cstring(res.type)) { + res.value = ptr; + } else { + LLVMValueRef str_len = LLVMConstInt(lb_type(m, t_int), value.value_string.len, true); + LLVMValueRef values[2] = {ptr, str_len}; + + res.value = LLVMConstNamedStruct(lb_type(m, original_type), values, 2); + } + + return res; + } + + case ExactValue_Integer: + if (is_type_pointer(type)) { + LLVMValueRef i = LLVMConstIntOfArbitraryPrecision(lb_type(m, t_uintptr), cast(unsigned)value.value_integer.len, big_int_ptr(&value.value_integer)); + res.value = LLVMConstIntToPtr(i, lb_type(m, original_type)); + } else { + res.value = LLVMConstIntOfArbitraryPrecision(lb_type(m, original_type), cast(unsigned)value.value_integer.len, big_int_ptr(&value.value_integer)); + if (value.value_integer.neg) { + res.value = LLVMConstNeg(res.value); + } + } + return res; + case ExactValue_Float: + if (type_size_of(type) == 4) { + f32 f = cast(f32)value.value_float; + res.value = lb_const_f32(m, f, type); + return res; + } + res.value = LLVMConstReal(lb_type(m, original_type), value.value_float); + return res; + case ExactValue_Complex: + { + LLVMValueRef values[2] = {}; + switch (8*type_size_of(type)) { + case 64: + values[0] = lb_const_f32(m, cast(f32)value.value_complex.real); + values[1] = lb_const_f32(m, cast(f32)value.value_complex.imag); + break; + case 128: + values[0] = LLVMConstReal(lb_type(m, t_f64), value.value_complex.real); + values[1] = LLVMConstReal(lb_type(m, t_f64), value.value_complex.imag); + break; + } + + res.value = LLVMConstNamedStruct(lb_type(m, original_type), values, 2); + return res; + } + break; + case ExactValue_Quaternion: + { + LLVMValueRef values[4] = {}; + switch (8*type_size_of(type)) { + case 128: + // @QuaternionLayout + values[3] = lb_const_f32(m, cast(f32)value.value_quaternion.real); + values[0] = lb_const_f32(m, cast(f32)value.value_quaternion.imag); + values[1] = lb_const_f32(m, cast(f32)value.value_quaternion.jmag); + values[2] = lb_const_f32(m, cast(f32)value.value_quaternion.kmag); + break; + case 256: + // @QuaternionLayout + values[3] = LLVMConstReal(lb_type(m, t_f64), value.value_quaternion.real); + values[0] = LLVMConstReal(lb_type(m, t_f64), value.value_quaternion.imag); + values[1] = LLVMConstReal(lb_type(m, t_f64), value.value_quaternion.jmag); + values[2] = LLVMConstReal(lb_type(m, t_f64), value.value_quaternion.kmag); + break; + } + + res.value = LLVMConstNamedStruct(lb_type(m, original_type), values, 4); + return res; + } + break; + + case ExactValue_Pointer: + res.value = LLVMConstIntToPtr(LLVMConstInt(lb_type(m, t_uintptr), value.value_pointer, false), lb_type(m, original_type)); + return res; + + case ExactValue_Compound: + if (is_type_slice(type)) { + return lb_const_value(m, type, value); + } else if (is_type_array(type)) { + ast_node(cl, CompoundLit, value.value_compound); + Type *elem_type = type->Array.elem; + isize elem_count = cl->elems.count; + if (elem_count == 0) { + return lb_const_nil(m, original_type); + } + if (cl->elems[0]->kind == Ast_FieldValue) { + // TODO(bill): This is O(N*M) and will be quite slow; it should probably be sorted before hand + + LLVMValueRef *values = gb_alloc_array(heap_allocator(), LLVMValueRef, type->Array.count); + defer (gb_free(heap_allocator(), values)); + + isize value_index = 0; + for (i64 i = 0; i < type->Array.count; i++) { + bool found = false; + + for (isize j = 0; j < elem_count; j++) { + Ast *elem = cl->elems[j]; + ast_node(fv, FieldValue, elem); + if (is_ast_range(fv->field)) { + ast_node(ie, BinaryExpr, fv->field); + TypeAndValue lo_tav = ie->left->tav; + TypeAndValue hi_tav = ie->right->tav; + GB_ASSERT(lo_tav.mode == Addressing_Constant); + GB_ASSERT(hi_tav.mode == Addressing_Constant); + + TokenKind op = ie->op.kind; + i64 lo = exact_value_to_i64(lo_tav.value); + i64 hi = exact_value_to_i64(hi_tav.value); + if (op == Token_Ellipsis) { + hi += 1; + } + if (lo == i) { + TypeAndValue tav = fv->value->tav; + if (tav.mode != Addressing_Constant) { + break; + } + LLVMValueRef val = lb_const_value(m, elem_type, tav.value).value; + for (i64 k = lo; k < hi; k++) { + values[value_index++] = val; + } + + found = true; + i += (hi-lo-1); + break; + } + } else { + TypeAndValue index_tav = fv->field->tav; + GB_ASSERT(index_tav.mode == Addressing_Constant); + i64 index = exact_value_to_i64(index_tav.value); + if (index == i) { + TypeAndValue tav = fv->value->tav; + if (tav.mode != Addressing_Constant) { + break; + } + LLVMValueRef val = lb_const_value(m, elem_type, tav.value).value; + values[value_index++] = val; + found = true; + break; + } + } + } + + if (!found) { + values[value_index++] = LLVMConstNull(lb_type(m, elem_type)); + } + } + + res.value = LLVMConstArray(lb_type(m, elem_type), values, cast(unsigned int)type->Array.count); + return res; + } else { + GB_ASSERT_MSG(elem_count == type->Array.count, "%td != %td", elem_count, type->Array.count); + + LLVMValueRef *values = gb_alloc_array(heap_allocator(), LLVMValueRef, type->Array.count); + defer (gb_free(heap_allocator(), values)); + + for (isize i = 0; i < elem_count; i++) { + TypeAndValue tav = cl->elems[i]->tav; + GB_ASSERT(tav.mode != Addressing_Invalid); + values[i] = lb_const_value(m, elem_type, tav.value).value; + } + for (isize i = elem_count; i < type->Array.count; i++) { + values[i] = LLVMConstNull(lb_type(m, elem_type)); + } + + res.value = LLVMConstArray(lb_type(m, elem_type), values, cast(unsigned int)type->Array.count); + return res; + } + } else if (is_type_enumerated_array(type)) { + ast_node(cl, CompoundLit, value.value_compound); + Type *elem_type = type->EnumeratedArray.elem; + isize elem_count = cl->elems.count; + if (elem_count == 0) { + return lb_const_nil(m, original_type); + } + if (cl->elems[0]->kind == Ast_FieldValue) { + // TODO(bill): This is O(N*M) and will be quite slow; it should probably be sorted before hand + + LLVMValueRef *values = gb_alloc_array(heap_allocator(), LLVMValueRef, type->EnumeratedArray.count); + defer (gb_free(heap_allocator(), values)); + + isize value_index = 0; + + i64 total_lo = exact_value_to_i64(type->EnumeratedArray.min_value); + i64 total_hi = exact_value_to_i64(type->EnumeratedArray.max_value); + + for (i64 i = total_lo; i <= total_hi; i++) { + bool found = false; + + for (isize j = 0; j < elem_count; j++) { + Ast *elem = cl->elems[j]; + ast_node(fv, FieldValue, elem); + if (is_ast_range(fv->field)) { + ast_node(ie, BinaryExpr, fv->field); + TypeAndValue lo_tav = ie->left->tav; + TypeAndValue hi_tav = ie->right->tav; + GB_ASSERT(lo_tav.mode == Addressing_Constant); + GB_ASSERT(hi_tav.mode == Addressing_Constant); + + TokenKind op = ie->op.kind; + i64 lo = exact_value_to_i64(lo_tav.value); + i64 hi = exact_value_to_i64(hi_tav.value); + if (op == Token_Ellipsis) { + hi += 1; + } + if (lo == i) { + TypeAndValue tav = fv->value->tav; + if (tav.mode != Addressing_Constant) { + break; + } + LLVMValueRef val = lb_const_value(m, elem_type, tav.value).value; + for (i64 k = lo; k < hi; k++) { + values[value_index++] = val; + } + + found = true; + i += (hi-lo-1); + break; + } + } else { + TypeAndValue index_tav = fv->field->tav; + GB_ASSERT(index_tav.mode == Addressing_Constant); + i64 index = exact_value_to_i64(index_tav.value); + if (index == i) { + TypeAndValue tav = fv->value->tav; + if (tav.mode != Addressing_Constant) { + break; + } + LLVMValueRef val = lb_const_value(m, elem_type, tav.value).value; + values[value_index++] = val; + found = true; + break; + } + } + } + + if (!found) { + values[value_index++] = LLVMConstNull(lb_type(m, elem_type)); + } + } + + res.value = LLVMConstArray(lb_type(m, elem_type), values, cast(unsigned int)type->EnumeratedArray.count); + return res; + } else { + GB_ASSERT_MSG(elem_count == type->EnumeratedArray.count, "%td != %td", elem_count, type->EnumeratedArray.count); + + LLVMValueRef *values = gb_alloc_array(heap_allocator(), LLVMValueRef, type->EnumeratedArray.count); + defer (gb_free(heap_allocator(), values)); + + for (isize i = 0; i < elem_count; i++) { + TypeAndValue tav = cl->elems[i]->tav; + GB_ASSERT(tav.mode != Addressing_Invalid); + values[i] = lb_const_value(m, elem_type, tav.value).value; + } + for (isize i = elem_count; i < type->EnumeratedArray.count; i++) { + values[i] = LLVMConstNull(lb_type(m, elem_type)); + } + + res.value = LLVMConstArray(lb_type(m, elem_type), values, cast(unsigned int)type->EnumeratedArray.count); + return res; + } + } else if (is_type_simd_vector(type)) { + ast_node(cl, CompoundLit, value.value_compound); + + Type *elem_type = type->SimdVector.elem; + isize elem_count = cl->elems.count; + if (elem_count == 0) { + return lb_const_nil(m, original_type); + } + + isize total_elem_count = type->SimdVector.count; + LLVMValueRef *values = gb_alloc_array(heap_allocator(), LLVMValueRef, total_elem_count); + defer (gb_free(heap_allocator(), values)); + + for (isize i = 0; i < elem_count; i++) { + TypeAndValue tav = cl->elems[i]->tav; + GB_ASSERT(tav.mode != Addressing_Invalid); + values[i] = lb_const_value(m, elem_type, tav.value).value; + } + for (isize i = elem_count; i < type->SimdVector.count; i++) { + values[i] = LLVMConstNull(lb_type(m, elem_type)); + } + + res.value = LLVMConstVector(values, cast(unsigned)total_elem_count); + return res; + } else if (is_type_struct(type)) { + ast_node(cl, CompoundLit, value.value_compound); + + if (cl->elems.count == 0) { + return lb_const_nil(m, original_type); + } + + isize offset = 0; + if (type->Struct.custom_align > 0) { + offset = 1; + } + + isize value_count = type->Struct.fields.count + offset; + LLVMValueRef *values = gb_alloc_array(heap_allocator(), LLVMValueRef, value_count); + bool *visited = gb_alloc_array(heap_allocator(), bool, value_count); + defer (gb_free(heap_allocator(), values)); + defer (gb_free(heap_allocator(), visited)); + + + + if (cl->elems.count > 0) { + if (cl->elems[0]->kind == Ast_FieldValue) { + isize elem_count = cl->elems.count; + for (isize i = 0; i < elem_count; i++) { + ast_node(fv, FieldValue, cl->elems[i]); + String name = fv->field->Ident.token.string; + + TypeAndValue tav = fv->value->tav; + GB_ASSERT(tav.mode != Addressing_Invalid); + + Selection sel = lookup_field(type, name, false); + Entity *f = type->Struct.fields[sel.index[0]]; + + values[offset+f->Variable.field_index] = lb_const_value(m, f->type, tav.value).value; + visited[offset+f->Variable.field_index] = true; + } + } else { + for_array(i, cl->elems) { + Entity *f = type->Struct.fields[i]; + TypeAndValue tav = cl->elems[i]->tav; + ExactValue val = {}; + if (tav.mode != Addressing_Invalid) { + val = tav.value; + } + values[offset+f->Variable.field_index] = lb_const_value(m, f->type, val).value; + visited[offset+f->Variable.field_index] = true; + } + } + } + + for (isize i = 0; i < type->Struct.fields.count; i++) { + if (!visited[offset+i]) { + GB_ASSERT(values[offset+i] == nullptr); + values[offset+i] = lb_const_nil(m, get_struct_field_type(type, i)).value; + } + } + + if (type->Struct.custom_align > 0) { + values[0] = LLVMConstNull(lb_alignment_prefix_type_hack(m, type->Struct.custom_align)); + } + + res.value = LLVMConstNamedStruct(lb_type(m, original_type), values, cast(unsigned)value_count); + return res; + } else if (is_type_bit_set(type)) { + ast_node(cl, CompoundLit, value.value_compound); + if (cl->elems.count == 0) { + return lb_const_nil(m, original_type); + } + + i64 sz = type_size_of(type); + if (sz == 0) { + return lb_const_nil(m, original_type); + } + + u64 bits = 0; + for_array(i, cl->elems) { + Ast *e = cl->elems[i]; + GB_ASSERT(e->kind != Ast_FieldValue); + + TypeAndValue tav = e->tav; + if (tav.mode != Addressing_Constant) { + continue; + } + GB_ASSERT(tav.value.kind == ExactValue_Integer); + i64 v = big_int_to_i64(&tav.value.value_integer); + i64 lower = type->BitSet.lower; + bits |= 1ull<<cast(u64)(v-lower); + } + if (is_type_different_to_arch_endianness(type)) { + i64 size = type_size_of(type); + switch (size) { + case 2: bits = cast(u64)gb_endian_swap16(cast(u16)bits); break; + case 4: bits = cast(u64)gb_endian_swap32(cast(u32)bits); break; + case 8: bits = cast(u64)gb_endian_swap64(cast(u64)bits); break; + } + } + + res.value = LLVMConstInt(lb_type(m, original_type), bits, false); + return res; + } else { + return lb_const_nil(m, original_type); + } + break; + case ExactValue_Procedure: + { + Ast *expr = value.value_procedure; + GB_ASSERT(expr != nullptr); + if (expr->kind == Ast_ProcLit) { + return lb_generate_anonymous_proc_lit(m, str_lit("_proclit"), expr); + } + } + break; + case ExactValue_Typeid: + return lb_typeid(m, value.value_typeid, original_type); + } + + return lb_const_nil(m, original_type); +} + +u64 lb_generate_source_code_location_hash(TokenPos const &pos) { + u64 h = 0xcbf29ce484222325; + for (isize i = 0; i < pos.file.len; i++) { + h = (h ^ u64(pos.file[i])) * 0x100000001b3; + } + h = h ^ (u64(pos.line) * 0x100000001b3); + h = h ^ (u64(pos.column) * 0x100000001b3); + return h; +} + +lbValue lb_emit_source_code_location(lbProcedure *p, String const &procedure, TokenPos const &pos) { + lbModule *m = p->module; + + LLVMValueRef fields[5] = {}; + fields[0]/*file*/ = lb_find_or_add_entity_string(p->module, pos.file).value; + fields[1]/*line*/ = lb_const_int(m, t_int, pos.line).value; + fields[2]/*column*/ = lb_const_int(m, t_int, pos.column).value; + fields[3]/*procedure*/ = lb_find_or_add_entity_string(p->module, procedure).value; + fields[4]/*hash*/ = lb_const_int(m, t_u64, lb_generate_source_code_location_hash(pos)).value; + + lbValue res = {}; + res.value = LLVMConstNamedStruct(lb_type(m, t_source_code_location), fields, 5); + res.type = t_source_code_location; + return res; +} + +lbValue lb_emit_source_code_location(lbProcedure *p, Ast *node) { + String proc_name = {}; + if (p->entity) { + proc_name = p->entity->token.string; + } + TokenPos pos = {}; + if (node) { + pos = ast_token(node).pos; + } + return lb_emit_source_code_location(p, proc_name, pos); +} + + +lbValue lb_emit_unary_arith(lbProcedure *p, TokenKind op, lbValue x, Type *type) { + switch (op) { + case Token_Add: + return x; + case Token_Not: // Boolean not + case Token_Xor: // Bitwise not + case Token_Sub: // Number negation + break; + case Token_Pointer: + GB_PANIC("This should be handled elsewhere"); + break; + } + + if (is_type_array(x.type)) { + // IMPORTANT TODO(bill): This is very wasteful with regards to stack memory + Type *tl = base_type(x.type); + lbValue val = lb_address_from_load_or_generate_local(p, x); + GB_ASSERT(is_type_array(type)); + Type *elem_type = base_array_type(type); + + // NOTE(bill): Doesn't need to be zero because it will be initialized in the loops + lbAddr res_addr = lb_add_local_generated(p, type, false); + lbValue res = lb_addr_get_ptr(p, res_addr); + + bool inline_array_arith = type_size_of(type) <= build_context.max_align; + + i32 count = cast(i32)tl->Array.count; + + if (inline_array_arith) { + // inline + for (i32 i = 0; i < count; i++) { + lbValue e = lb_emit_load(p, lb_emit_array_epi(p, val, i)); + lbValue z = lb_emit_unary_arith(p, op, e, elem_type); + lb_emit_store(p, lb_emit_array_epi(p, res, i), z); + } + } else { + auto loop_data = lb_loop_start(p, count, t_i32); + + lbValue e = lb_emit_load(p, lb_emit_array_ep(p, val, loop_data.idx)); + lbValue z = lb_emit_unary_arith(p, op, e, elem_type); + lb_emit_store(p, lb_emit_array_ep(p, res, loop_data.idx), z); + + lb_loop_end(p, loop_data); + } + return lb_emit_load(p, res); + + } + + if (op == Token_Xor) { + lbValue cmp = {}; + cmp.value = LLVMBuildNot(p->builder, x.value, ""); + cmp.type = x.type; + return lb_emit_conv(p, cmp, type); + } + + if (op == Token_Not) { + lbValue cmp = {}; + LLVMValueRef zero = LLVMConstInt(lb_type(p->module, x.type), 0, false); + cmp.value = LLVMBuildICmp(p->builder, LLVMIntEQ, x.value, zero, ""); + cmp.type = t_llvm_bool; + return lb_emit_conv(p, cmp, type); + } + + if (op == Token_Sub && is_type_integer(type) && is_type_different_to_arch_endianness(type)) { + Type *platform_type = integer_endian_type_to_platform_type(type); + lbValue v = lb_emit_byte_swap(p, x, platform_type); + + lbValue res = {}; + res.value = LLVMBuildNeg(p->builder, v.value, ""); + res.type = platform_type; + + return lb_emit_byte_swap(p, res, type); + } + + + lbValue res = {}; + + switch (op) { + case Token_Not: // Boolean not + case Token_Xor: // Bitwise not + res.value = LLVMBuildNot(p->builder, x.value, ""); + res.type = x.type; + return res; + case Token_Sub: // Number negation + if (is_type_integer(x.type)) { + res.value = LLVMBuildNeg(p->builder, x.value, ""); + } else if (is_type_float(x.type)) { + res.value = LLVMBuildFNeg(p->builder, x.value, ""); + } else { + GB_PANIC("Unhandled type %s", type_to_string(x.type)); + } + res.type = x.type; + return res; + } + + return res; +} + + + +lbValue lb_emit_arith(lbProcedure *p, TokenKind op, lbValue lhs, lbValue rhs, Type *type) { + lbModule *m = p->module; + + if (is_type_array(lhs.type) || is_type_array(rhs.type)) { + lhs = lb_emit_conv(p, lhs, type); + rhs = lb_emit_conv(p, rhs, type); + + lbValue x = lb_address_from_load_or_generate_local(p, lhs); + lbValue y = lb_address_from_load_or_generate_local(p, rhs); + + GB_ASSERT(is_type_array(type)); + Type *elem_type = base_array_type(type); + + lbAddr res = lb_add_local_generated(p, type, false); + + i64 count = base_type(type)->Array.count; + + bool inline_array_arith = type_size_of(type) <= build_context.max_align; + + if (inline_array_arith) { + for (i64 i = 0; i < count; i++) { + lbValue a = lb_emit_load(p, lb_emit_array_epi(p, x, i)); + lbValue b = lb_emit_load(p, lb_emit_array_epi(p, y, i)); + lbValue c = lb_emit_arith(p, op, a, b, elem_type); + lb_emit_store(p, lb_emit_array_epi(p, res.addr, i), c); + } + } else { + auto loop_data = lb_loop_start(p, count); + + lbValue a = lb_emit_load(p, lb_emit_array_ep(p, x, loop_data.idx)); + lbValue b = lb_emit_load(p, lb_emit_array_ep(p, y, loop_data.idx)); + lbValue c = lb_emit_arith(p, op, a, b, elem_type); + lb_emit_store(p, lb_emit_array_ep(p, res.addr, loop_data.idx), c); + + lb_loop_end(p, loop_data); + } + + return lb_addr_load(p, res); + } else if (is_type_complex(type)) { + lhs = lb_emit_conv(p, lhs, type); + rhs = lb_emit_conv(p, rhs, type); + + Type *ft = base_complex_elem_type(type); + + if (op == Token_Quo) { + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = lhs; + args[1] = rhs; + + switch (type_size_of(ft)) { + case 4: return lb_emit_runtime_call(p, "quo_complex64", args); + case 8: return lb_emit_runtime_call(p, "quo_complex128", args); + default: GB_PANIC("Unknown float type"); break; + } + } + + lbAddr res = lb_add_local_generated(p, type, false); // NOTE: initialized in full later + lbValue a = lb_emit_struct_ev(p, lhs, 0); + lbValue b = lb_emit_struct_ev(p, lhs, 1); + lbValue c = lb_emit_struct_ev(p, rhs, 0); + lbValue d = lb_emit_struct_ev(p, rhs, 1); + + lbValue real = {}; + lbValue imag = {}; + + switch (op) { + case Token_Add: + real = lb_emit_arith(p, Token_Add, a, c, ft); + imag = lb_emit_arith(p, Token_Add, b, d, ft); + break; + case Token_Sub: + real = lb_emit_arith(p, Token_Sub, a, c, ft); + imag = lb_emit_arith(p, Token_Sub, b, d, ft); + break; + case Token_Mul: { + lbValue x = lb_emit_arith(p, Token_Mul, a, c, ft); + lbValue y = lb_emit_arith(p, Token_Mul, b, d, ft); + real = lb_emit_arith(p, Token_Sub, x, y, ft); + lbValue z = lb_emit_arith(p, Token_Mul, b, c, ft); + lbValue w = lb_emit_arith(p, Token_Mul, a, d, ft); + imag = lb_emit_arith(p, Token_Add, z, w, ft); + break; + } + } + + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 0), real); + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 1), imag); + + return lb_addr_load(p, res); + } else if (is_type_quaternion(type)) { + lhs = lb_emit_conv(p, lhs, type); + rhs = lb_emit_conv(p, rhs, type); + + Type *ft = base_complex_elem_type(type); + + if (op == Token_Add || op == Token_Sub) { + lbAddr res = lb_add_local_generated(p, type, false); // NOTE: initialized in full later + lbValue x0 = lb_emit_struct_ev(p, lhs, 0); + lbValue x1 = lb_emit_struct_ev(p, lhs, 1); + lbValue x2 = lb_emit_struct_ev(p, lhs, 2); + lbValue x3 = lb_emit_struct_ev(p, lhs, 3); + + lbValue y0 = lb_emit_struct_ev(p, rhs, 0); + lbValue y1 = lb_emit_struct_ev(p, rhs, 1); + lbValue y2 = lb_emit_struct_ev(p, rhs, 2); + lbValue y3 = lb_emit_struct_ev(p, rhs, 3); + + lbValue z0 = lb_emit_arith(p, op, x0, y0, ft); + lbValue z1 = lb_emit_arith(p, op, x1, y1, ft); + lbValue z2 = lb_emit_arith(p, op, x2, y2, ft); + lbValue z3 = lb_emit_arith(p, op, x3, y3, ft); + + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 0), z0); + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 1), z1); + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 2), z2); + lb_emit_store(p, lb_emit_struct_ep(p, res.addr, 3), z3); + + return lb_addr_load(p, res); + } else if (op == Token_Mul) { + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = lhs; + args[1] = rhs; + + switch (8*type_size_of(ft)) { + case 32: return lb_emit_runtime_call(p, "mul_quaternion128", args); + case 64: return lb_emit_runtime_call(p, "mul_quaternion256", args); + default: GB_PANIC("Unknown float type"); break; + } + } else if (op == Token_Quo) { + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = lhs; + args[1] = rhs; + + switch (8*type_size_of(ft)) { + case 32: return lb_emit_runtime_call(p, "quo_quaternion128", args); + case 64: return lb_emit_runtime_call(p, "quo_quaternion256", args); + default: GB_PANIC("Unknown float type"); break; + } + } + } + + if (is_type_integer(type) && is_type_different_to_arch_endianness(type)) { + switch (op) { + case Token_AndNot: + case Token_And: + case Token_Or: + case Token_Xor: + goto handle_op; + } + + Type *platform_type = integer_endian_type_to_platform_type(type); + lbValue x = lb_emit_byte_swap(p, lhs, integer_endian_type_to_platform_type(lhs.type)); + lbValue y = lb_emit_byte_swap(p, rhs, integer_endian_type_to_platform_type(rhs.type)); + + lbValue res = lb_emit_arith(p, op, x, y, platform_type); + + return lb_emit_byte_swap(p, res, type); + } + + + +handle_op: + lhs = lb_emit_conv(p, lhs, type); + rhs = lb_emit_conv(p, rhs, type); + + lbValue res = {}; + res.type = type; + + + switch (op) { + case Token_Add: + if (is_type_float(type)) { + res.value = LLVMBuildFAdd(p->builder, lhs.value, rhs.value, ""); + return res; + } + res.value = LLVMBuildAdd(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Sub: + if (is_type_float(type)) { + res.value = LLVMBuildFSub(p->builder, lhs.value, rhs.value, ""); + return res; + } + res.value = LLVMBuildSub(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Mul: + if (is_type_float(type)) { + res.value = LLVMBuildFMul(p->builder, lhs.value, rhs.value, ""); + return res; + } + res.value = LLVMBuildMul(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Quo: + if (is_type_float(type)) { + res.value = LLVMBuildFDiv(p->builder, lhs.value, rhs.value, ""); + return res; + } else if (is_type_unsigned(type)) { + res.value = LLVMBuildUDiv(p->builder, lhs.value, rhs.value, ""); + return res; + } + res.value = LLVMBuildSDiv(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Mod: + if (is_type_float(type)) { + res.value = LLVMBuildFRem(p->builder, lhs.value, rhs.value, ""); + return res; + } else if (is_type_unsigned(type)) { + res.value = LLVMBuildURem(p->builder, lhs.value, rhs.value, ""); + return res; + } + res.value = LLVMBuildSRem(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_ModMod: + if (is_type_unsigned(type)) { + res.value = LLVMBuildURem(p->builder, lhs.value, rhs.value, ""); + return res; + } else { + LLVMValueRef a = LLVMBuildSRem(p->builder, lhs.value, rhs.value, ""); + LLVMValueRef b = LLVMBuildAdd(p->builder, a, rhs.value, ""); + LLVMValueRef c = LLVMBuildSRem(p->builder, b, rhs.value, ""); + res.value = c; + return res; + } + + case Token_And: + res.value = LLVMBuildAnd(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Or: + res.value = LLVMBuildOr(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Xor: + res.value = LLVMBuildXor(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Shl: + rhs = lb_emit_conv(p, rhs, lhs.type); + res.value = LLVMBuildShl(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_Shr: + if (is_type_unsigned(type)) { + res.value = LLVMBuildLShr(p->builder, lhs.value, rhs.value, ""); + return res; + } + rhs = lb_emit_conv(p, rhs, lhs.type); + res.value = LLVMBuildAShr(p->builder, lhs.value, rhs.value, ""); + return res; + case Token_AndNot: + { + LLVMValueRef new_rhs = LLVMBuildNot(p->builder, rhs.value, ""); + res.value = LLVMBuildAnd(p->builder, lhs.value, new_rhs, ""); + return res; + } + break; + } + + GB_PANIC("unhandled operator of lb_emit_arith"); + + return {}; +} + +lbValue lb_build_binary_expr(lbProcedure *p, Ast *expr) { + ast_node(be, BinaryExpr, expr); + + TypeAndValue tv = type_and_value_of_expr(expr); + + switch (be->op.kind) { + case Token_Add: + case Token_Sub: + case Token_Mul: + case Token_Quo: + case Token_Mod: + case Token_ModMod: + case Token_And: + case Token_Or: + case Token_Xor: + case Token_AndNot: + case Token_Shl: + case Token_Shr: { + Type *type = default_type(tv.type); + lbValue left = lb_build_expr(p, be->left); + lbValue right = lb_build_expr(p, be->right); + return lb_emit_arith(p, be->op.kind, left, right, type); + } + + case Token_CmpEq: + case Token_NotEq: + case Token_Lt: + case Token_LtEq: + case Token_Gt: + case Token_GtEq: + { + lbValue left = lb_build_expr(p, be->left); + Type *type = default_type(tv.type); + lbValue right = lb_build_expr(p, be->right); + lbValue cmp = lb_emit_comp(p, be->op.kind, left, right); + return lb_emit_conv(p, cmp, type); + } + + case Token_CmpAnd: + case Token_CmpOr: + return lb_emit_logical_binary_expr(p, be->op.kind, be->left, be->right, tv.type); + + case Token_in: + case Token_not_in: + { + lbValue left = lb_build_expr(p, be->left); + Type *type = default_type(tv.type); + lbValue right = lb_build_expr(p, be->right); + Type *rt = base_type(right.type); + switch (rt->kind) { + case Type_Map: + { + lbValue addr = lb_address_from_load_or_generate_local(p, right); + lbValue h = lb_gen_map_header(p, addr, rt); + lbValue key = lb_gen_map_key(p, left, rt->Map.key); + + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = h; + args[1] = key; + + lbValue ptr = lb_emit_runtime_call(p, "__dynamic_map_get", args); + if (be->op.kind == Token_in) { + return lb_emit_conv(p, lb_emit_comp_against_nil(p, Token_NotEq, ptr), t_bool); + } else { + return lb_emit_conv(p, lb_emit_comp_against_nil(p, Token_CmpEq, ptr), t_bool); + } + } + break; + case Type_BitSet: + { + Type *key_type = rt->BitSet.elem; + GB_ASSERT(are_types_identical(left.type, key_type)); + + Type *it = bit_set_to_int(rt); + left = lb_emit_conv(p, left, it); + + lbValue lower = lb_const_value(p->module, it, exact_value_i64(rt->BitSet.lower)); + lbValue key = lb_emit_arith(p, Token_Sub, left, lower, it); + lbValue bit = lb_emit_arith(p, Token_Shl, lb_const_int(p->module, it, 1), key, it); + bit = lb_emit_conv(p, bit, it); + + lbValue old_value = lb_emit_transmute(p, right, it); + lbValue new_value = lb_emit_arith(p, Token_And, old_value, bit, it); + + if (be->op.kind == Token_in) { + return lb_emit_conv(p, lb_emit_comp(p, Token_NotEq, new_value, lb_const_int(p->module, new_value.type, 0)), t_bool); + } else { + return lb_emit_conv(p, lb_emit_comp(p, Token_CmpEq, new_value, lb_const_int(p->module, new_value.type, 0)), t_bool); + } + } + break; + default: + GB_PANIC("Invalid 'in' type"); + } + break; + } + break; + default: + GB_PANIC("Invalid binary expression"); + break; + } + return {}; +} + + +String lookup_subtype_polymorphic_field(CheckerInfo *info, Type *dst, Type *src) { + Type *prev_src = src; + // Type *prev_dst = dst; + src = base_type(type_deref(src)); + // dst = base_type(type_deref(dst)); + bool src_is_ptr = src != prev_src; + // bool dst_is_ptr = dst != prev_dst; + + GB_ASSERT(is_type_struct(src) || is_type_union(src)); + for_array(i, src->Struct.fields) { + Entity *f = src->Struct.fields[i]; + if (f->kind == Entity_Variable && f->flags & EntityFlag_Using) { + if (are_types_identical(dst, f->type)) { + return f->token.string; + } + if (src_is_ptr && is_type_pointer(dst)) { + if (are_types_identical(type_deref(dst), f->type)) { + return f->token.string; + } + } + if (is_type_struct(f->type)) { + String name = lookup_subtype_polymorphic_field(info, dst, f->type); + if (name.len > 0) { + return name; + } + } + } + } + return str_lit(""); +} + +lbValue lb_const_ptr_cast(lbModule *m, lbValue value, Type *t) { + GB_ASSERT(is_type_pointer(value.type)); + GB_ASSERT(is_type_pointer(t)); + GB_ASSERT(lb_is_const(value)); + + lbValue res = {}; + res.value = LLVMConstPointerCast(value.value, lb_type(m, t)); + res.type = t; + return res; +} + +lbValue lb_emit_conv(lbProcedure *p, lbValue value, Type *t) { + lbModule *m = p->module; + t = reduce_tuple_to_single_type(t); + + Type *src_type = value.type; + if (are_types_identical(t, src_type)) { + return value; + } + + Type *src = core_type(src_type); + Type *dst = core_type(t); + + if (is_type_untyped_nil(src)) { + return lb_const_nil(m, t); + } + if (is_type_untyped_undef(src)) { + return lb_const_undef(m, t); + } + + if (LLVMIsConstant(value.value)) { + if (is_type_any(dst)) { + Type *st = default_type(src_type); + lbAddr default_value = lb_add_local_generated(p, st, false); + lb_addr_store(p, default_value, value); + lbValue data = lb_emit_conv(p, default_value.addr, t_rawptr); + lbValue id = lb_typeid(m, st); + + lbAddr res = lb_add_local_generated(p, t, false); + lbValue a0 = lb_emit_struct_ep(p, res.addr, 0); + lbValue a1 = lb_emit_struct_ep(p, res.addr, 1); + lb_emit_store(p, a0, data); + lb_emit_store(p, a1, id); + return lb_addr_load(p, res); + } else if (dst->kind == Type_Basic) { + if (src->Basic.kind == Basic_string && dst->Basic.kind == Basic_cstring) { + String str = lb_get_const_string(m, value); + lbValue res = {}; + res.type = t; + res.value = llvm_cstring(m, str); + return res; + } + // if (is_type_float(dst)) { + // return value; + // } else if (is_type_integer(dst)) { + // return value; + // } + // ExactValue ev = value->Constant.value; + // if (is_type_float(dst)) { + // ev = exact_value_to_float(ev); + // } else if (is_type_complex(dst)) { + // ev = exact_value_to_complex(ev); + // } else if (is_type_quaternion(dst)) { + // ev = exact_value_to_quaternion(ev); + // } else if (is_type_string(dst)) { + // // Handled elsewhere + // GB_ASSERT_MSG(ev.kind == ExactValue_String, "%d", ev.kind); + // } else if (is_type_integer(dst)) { + // ev = exact_value_to_integer(ev); + // } else if (is_type_pointer(dst)) { + // // IMPORTANT NOTE(bill): LLVM doesn't support pointer constants expect 'null' + // lbValue i = lb_add_module_constant(p->module, t_uintptr, ev); + // return lb_emit(p, lb_instr_conv(p, irConv_inttoptr, i, t_uintptr, dst)); + // } + // return lb_const_value(p->module, t, ev); + } + } + + if (are_types_identical(src, dst)) { + if (!are_types_identical(src_type, t)) { + return lb_emit_transmute(p, value, t); + } + return value; + } + + + + // bool <-> llvm bool + if (is_type_boolean(src) && dst == t_llvm_bool) { + lbValue res = {}; + res.value = LLVMBuildTrunc(p->builder, value.value, lb_type(m, dst), ""); + res.type = dst; + return res; + } + if (src == t_llvm_bool && is_type_boolean(dst)) { + lbValue res = {}; + res.value = LLVMBuildZExt(p->builder, value.value, lb_type(m, dst), ""); + res.type = dst; + return res; + } + + + // integer -> integer + if (is_type_integer(src) && is_type_integer(dst)) { + GB_ASSERT(src->kind == Type_Basic && + dst->kind == Type_Basic); + i64 sz = type_size_of(default_type(src)); + i64 dz = type_size_of(default_type(dst)); + + if (sz > 1 && is_type_different_to_arch_endianness(src)) { + Type *platform_src_type = integer_endian_type_to_platform_type(src); + value = lb_emit_byte_swap(p, value, platform_src_type); + } + LLVMOpcode op = LLVMTrunc; + + if (dz < sz) { + op = LLVMTrunc; + } else if (dz == sz) { + // NOTE(bill): In LLVM, all integers are signed and rely upon 2's compliment + // NOTE(bill): Copy the value just for type correctness + op = LLVMBitCast; + } else if (dz > sz) { + op = is_type_unsigned(src) ? LLVMZExt : LLVMSExt; // zero extent + } + + if (dz > 1 && is_type_different_to_arch_endianness(dst)) { + Type *platform_dst_type = integer_endian_type_to_platform_type(dst); + lbValue res = {}; + res.value = LLVMBuildCast(p->builder, op, value.value, lb_type(m, platform_dst_type), ""); + res.type = t; + return lb_emit_byte_swap(p, res, t); + } else { + lbValue res = {}; + res.value = LLVMBuildCast(p->builder, op, value.value, lb_type(m, t), ""); + res.type = t; + return res; + } + } + + + // boolean -> boolean/integer + if (is_type_boolean(src) && (is_type_boolean(dst) || is_type_integer(dst))) { + LLVMValueRef b = LLVMBuildICmp(p->builder, LLVMIntNE, value.value, LLVMConstNull(lb_type(m, value.type)), ""); + lbValue res = {}; + res.value = LLVMBuildIntCast2(p->builder, value.value, lb_type(m, t), false, ""); + res.type = t; + return res; + } + + if (is_type_cstring(src) && is_type_u8_ptr(dst)) { + return lb_emit_transmute(p, value, dst); + } + if (is_type_u8_ptr(src) && is_type_cstring(dst)) { + return lb_emit_transmute(p, value, dst); + } + if (is_type_cstring(src) && is_type_rawptr(dst)) { + return lb_emit_transmute(p, value, dst); + } + if (is_type_rawptr(src) && is_type_cstring(dst)) { + return lb_emit_transmute(p, value, dst); + } + + if (are_types_identical(src, t_cstring) && are_types_identical(dst, t_string)) { + lbValue c = lb_emit_conv(p, value, t_cstring); + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = c; + lbValue s = lb_emit_runtime_call(p, "cstring_to_string", args); + return lb_emit_conv(p, s, dst); + } + + + // integer -> boolean + if (is_type_integer(src) && is_type_boolean(dst)) { + lbValue res = {}; + res.value = LLVMBuildICmp(p->builder, LLVMIntNE, value.value, LLVMConstNull(lb_type(m, value.type)), ""); + res.type = t_llvm_bool; + return lb_emit_conv(p, res, t); + } + + // float -> float + if (is_type_float(src) && is_type_float(dst)) { + gbAllocator a = heap_allocator(); + i64 sz = type_size_of(src); + i64 dz = type_size_of(dst); + + lbValue res = {}; + res.type = t; + + if (dz >= sz) { + res.value = LLVMBuildFPExt(p->builder, value.value, lb_type(m, t), ""); + } else { + res.value = LLVMBuildFPTrunc(p->builder, value.value, lb_type(m, t), ""); + } + return res; + } + + if (is_type_complex(src) && is_type_complex(dst)) { + Type *ft = base_complex_elem_type(dst); + lbAddr gen = lb_add_local_generated(p, dst, false); + lbValue gp = lb_addr_get_ptr(p, gen); + lbValue real = lb_emit_conv(p, lb_emit_struct_ev(p, value, 0), ft); + lbValue imag = lb_emit_conv(p, lb_emit_struct_ev(p, value, 1), ft); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 0), real); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 1), imag); + return lb_addr_load(p, gen); + } + + if (is_type_quaternion(src) && is_type_quaternion(dst)) { + // @QuaternionLayout + Type *ft = base_complex_elem_type(dst); + lbAddr gen = lb_add_local_generated(p, dst, false); + lbValue gp = lb_addr_get_ptr(p, gen); + lbValue q0 = lb_emit_conv(p, lb_emit_struct_ev(p, value, 0), ft); + lbValue q1 = lb_emit_conv(p, lb_emit_struct_ev(p, value, 1), ft); + lbValue q2 = lb_emit_conv(p, lb_emit_struct_ev(p, value, 2), ft); + lbValue q3 = lb_emit_conv(p, lb_emit_struct_ev(p, value, 3), ft); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 0), q0); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 1), q1); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 2), q2); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 3), q3); + return lb_addr_load(p, gen); + } + + if (is_type_float(src) && is_type_complex(dst)) { + Type *ft = base_complex_elem_type(dst); + lbAddr gen = lb_add_local_generated(p, dst, true); + lbValue gp = lb_addr_get_ptr(p, gen); + lbValue real = lb_emit_conv(p, value, ft); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 0), real); + return lb_addr_load(p, gen); + } + if (is_type_float(src) && is_type_quaternion(dst)) { + Type *ft = base_complex_elem_type(dst); + lbAddr gen = lb_add_local_generated(p, dst, true); + lbValue gp = lb_addr_get_ptr(p, gen); + lbValue real = lb_emit_conv(p, value, ft); + // @QuaternionLayout + lb_emit_store(p, lb_emit_struct_ep(p, gp, 3), real); + return lb_addr_load(p, gen); + } + if (is_type_complex(src) && is_type_quaternion(dst)) { + Type *ft = base_complex_elem_type(dst); + lbAddr gen = lb_add_local_generated(p, dst, true); + lbValue gp = lb_addr_get_ptr(p, gen); + lbValue real = lb_emit_conv(p, lb_emit_struct_ev(p, value, 0), ft); + lbValue imag = lb_emit_conv(p, lb_emit_struct_ev(p, value, 1), ft); + // @QuaternionLayout + lb_emit_store(p, lb_emit_struct_ep(p, gp, 3), real); + lb_emit_store(p, lb_emit_struct_ep(p, gp, 0), imag); + return lb_addr_load(p, gen); + } + + // float <-> integer + if (is_type_float(src) && is_type_integer(dst)) { + lbValue res = {}; + res.type = t; + if (is_type_unsigned(dst)) { + res.value = LLVMBuildFPToUI(p->builder, value.value, lb_type(m, t), ""); + } else { + res.value = LLVMBuildFPToSI(p->builder, value.value, lb_type(m, t), ""); + } + return res; + } + if (is_type_integer(src) && is_type_float(dst)) { + lbValue res = {}; + res.type = t; + if (is_type_unsigned(src)) { + res.value = LLVMBuildUIToFP(p->builder, value.value, lb_type(m, t), ""); + } else { + res.value = LLVMBuildSIToFP(p->builder, value.value, lb_type(m, t), ""); + } + return res; + } + + // Pointer <-> uintptr + if (is_type_pointer(src) && is_type_uintptr(dst)) { + lbValue res = {}; + res.type = t; + res.value = LLVMBuildPtrToInt(p->builder, value.value, lb_type(m, t), ""); + return res; + } + if (is_type_uintptr(src) && is_type_pointer(dst)) { + lbValue res = {}; + res.type = t; + res.value = LLVMBuildIntToPtr(p->builder, value.value, lb_type(m, t), ""); + return res; + } + +#if 1 + if (is_type_union(dst)) { + for_array(i, dst->Union.variants) { + Type *vt = dst->Union.variants[i]; + if (are_types_identical(vt, src_type)) { + lbAddr parent = lb_add_local_generated(p, t, true); + lb_emit_store_union_variant(p, parent.addr, value, vt); + return lb_addr_load(p, parent); + } + } + } +#endif + + // NOTE(bill): This has to be done before 'Pointer <-> Pointer' as it's + // subtype polymorphism casting + if (check_is_assignable_to_using_subtype(src_type, t)) { + Type *st = type_deref(src_type); + Type *pst = st; + st = type_deref(st); + + bool st_is_ptr = is_type_pointer(src_type); + st = base_type(st); + + Type *dt = t; + bool dt_is_ptr = type_deref(dt) != dt; + + GB_ASSERT(is_type_struct(st) || is_type_raw_union(st)); + String field_name = lookup_subtype_polymorphic_field(p->module->info, t, src_type); + if (field_name.len > 0) { + // NOTE(bill): It can be casted + Selection sel = lookup_field(st, field_name, false, true); + if (sel.entity != nullptr) { + if (st_is_ptr) { + lbValue res = lb_emit_deep_field_gep(p, value, sel); + Type *rt = res.type; + if (!are_types_identical(rt, dt) && are_types_identical(type_deref(rt), dt)) { + res = lb_emit_load(p, res); + } + return res; + } else { + if (is_type_pointer(value.type)) { + Type *rt = value.type; + if (!are_types_identical(rt, dt) && are_types_identical(type_deref(rt), dt)) { + value = lb_emit_load(p, value); + } else { + value = lb_emit_deep_field_gep(p, value, sel); + return lb_emit_load(p, value); + } + } + + return lb_emit_deep_field_ev(p, value, sel); + + } + } else { + GB_PANIC("invalid subtype cast %s.%.*s", type_to_string(src_type), LIT(field_name)); + } + } + } + + + + // Pointer <-> Pointer + if (is_type_pointer(src) && is_type_pointer(dst)) { + lbValue res = {}; + res.type = t; + res.value = LLVMBuildPointerCast(p->builder, value.value, lb_type(m, t), ""); + return res; + } + + + + // proc <-> proc + if (is_type_proc(src) && is_type_proc(dst)) { + lbValue res = {}; + res.type = t; + res.value = LLVMBuildPointerCast(p->builder, value.value, lb_type(m, t), ""); + return res; + } + + // pointer -> proc + if (is_type_pointer(src) && is_type_proc(dst)) { + lbValue res = {}; + res.type = t; + res.value = LLVMBuildPointerCast(p->builder, value.value, lb_type(m, t), ""); + return res; + } + // proc -> pointer + if (is_type_proc(src) && is_type_pointer(dst)) { + lbValue res = {}; + res.type = t; + res.value = LLVMBuildPointerCast(p->builder, value.value, lb_type(m, t), ""); + return res; + } + + + + // []byte/[]u8 <-> string + if (is_type_u8_slice(src) && is_type_string(dst)) { + return lb_emit_transmute(p, value, t); + } + if (is_type_string(src) && is_type_u8_slice(dst)) { + return lb_emit_transmute(p, value, t); + } + + if (is_type_array(dst)) { + Type *elem = dst->Array.elem; + lbValue e = lb_emit_conv(p, value, elem); + // NOTE(bill): Doesn't need to be zero because it will be initialized in the loops + lbAddr v = lb_add_local_generated(p, t, false); + isize index_count = cast(isize)dst->Array.count; + + for (isize i = 0; i < index_count; i++) { + lbValue elem = lb_emit_array_epi(p, v.addr, i); + lb_emit_store(p, elem, e); + } + return lb_addr_load(p, v); + } + + if (is_type_any(dst)) { + if (is_type_untyped_nil(src)) { + return lb_const_nil(p->module, t); + } + if (is_type_untyped_undef(src)) { + return lb_const_undef(p->module, t); + } + + lbAddr result = lb_add_local_generated(p, t, true); + + Type *st = default_type(src_type); + + lbValue data = lb_address_from_load_or_generate_local(p, value); + GB_ASSERT_MSG(is_type_pointer(data.type), "%s", type_to_string(data.type)); + GB_ASSERT_MSG(is_type_typed(st), "%s", type_to_string(st)); + data = lb_emit_conv(p, data, t_rawptr); + + lbValue id = lb_typeid(p->module, st); + lbValue any_data = lb_emit_struct_ep(p, result.addr, 0); + lbValue any_id = lb_emit_struct_ep(p, result.addr, 1); + + lb_emit_store(p, any_data, data); + lb_emit_store(p, any_id, id); + + return lb_addr_load(p, result); + } + + if (is_type_untyped(src)) { + if (is_type_string(src) && is_type_string(dst)) { + lbAddr result = lb_add_local_generated(p, t, false); + lb_addr_store(p, result, value); + return lb_addr_load(p, result); + } + } + + gb_printf_err("%.*s\n", LIT(p->name)); + gb_printf_err("lb_emit_conv: src -> dst\n"); + gb_printf_err("Not Identical %s != %s\n", type_to_string(src_type), type_to_string(t)); + gb_printf_err("Not Identical %s != %s\n", type_to_string(src), type_to_string(dst)); + gb_printf_err("Not Identical %p != %p\n", src_type, t); + gb_printf_err("Not Identical %p != %p\n", src, dst); + + + GB_PANIC("Invalid type conversion: '%s' to '%s' for procedure '%.*s'", + type_to_string(src_type), type_to_string(t), + LIT(p->name)); + + return {}; +} + +bool lb_is_type_aggregate(Type *t) { + t = base_type(t); + switch (t->kind) { + case Type_Basic: + switch (t->Basic.kind) { + case Basic_string: + case Basic_any: + return true; + + // case Basic_complex32: + case Basic_complex64: + case Basic_complex128: + case Basic_quaternion128: + case Basic_quaternion256: + return true; + } + break; + + case Type_Pointer: + return false; + + case Type_Array: + case Type_Slice: + case Type_Struct: + case Type_Union: + case Type_Tuple: + case Type_DynamicArray: + case Type_Map: + case Type_BitField: + case Type_SimdVector: + return true; + + case Type_Named: + return lb_is_type_aggregate(t->Named.base); + } + + return false; +} + +lbValue lb_emit_transmute(lbProcedure *p, lbValue value, Type *t) { + Type *src_type = value.type; + if (are_types_identical(t, src_type)) { + return value; + } + + lbValue res = {}; + res.type = t; + + + Type *src = base_type(src_type); + Type *dst = base_type(t); + + lbModule *m = p->module; + + i64 sz = type_size_of(src); + i64 dz = type_size_of(dst); + + GB_ASSERT_MSG(sz == dz, "Invalid transmute conversion: '%s' to '%s'", type_to_string(src_type), type_to_string(t)); + + // NOTE(bill): Casting between an integer and a pointer cannot be done through a bitcast + if (is_type_uintptr(src) && is_type_pointer(dst)) { + res.value = LLVMBuildIntToPtr(p->builder, value.value, lb_type(m, t), ""); + return res; + } + if (is_type_pointer(src) && is_type_uintptr(dst)) { + res.value = LLVMBuildPtrToInt(p->builder, value.value, lb_type(m, t), ""); + return res; + } + if (is_type_uintptr(src) && is_type_proc(dst)) { + res.value = LLVMBuildIntToPtr(p->builder, value.value, lb_type(m, t), ""); + return res; + } + if (is_type_proc(src) && is_type_uintptr(dst)) { + res.value = LLVMBuildPtrToInt(p->builder, value.value, lb_type(m, t), ""); + return res; + } + + if (is_type_integer(src) && (is_type_pointer(dst) || is_type_cstring(dst))) { + res.value = LLVMBuildIntToPtr(p->builder, value.value, lb_type(m, t), ""); + return res; + } else if ((is_type_pointer(src) || is_type_cstring(src)) && is_type_integer(dst)) { + res.value = LLVMBuildPtrToInt(p->builder, value.value, lb_type(m, t), ""); + return res; + } + + if (is_type_pointer(src) && is_type_pointer(dst)) { + res.value = LLVMBuildPointerCast(p->builder, value.value, lb_type(p->module, t), ""); + return res; + } + + if (lb_is_type_aggregate(src) || lb_is_type_aggregate(dst)) { + lbValue s = lb_address_from_load_or_generate_local(p, value); + lbValue d = lb_emit_transmute(p, s, alloc_type_pointer(t)); + return lb_emit_load(p, d); + } + + + res.value = LLVMBuildBitCast(p->builder, value.value, lb_type(p->module, t), ""); + // GB_PANIC("lb_emit_transmute"); + return res; +} + + +void lb_emit_init_context(lbProcedure *p, lbAddr addr) { + GB_ASSERT(addr.kind == lbAddr_Context); + GB_ASSERT(addr.ctx.sel.index.count == 0); + + lbModule *m = p->module; + gbAllocator a = heap_allocator(); + auto args = array_make<lbValue>(a, 1); + args[0] = addr.addr; + lb_emit_runtime_call(p, "__init_context", args); +} + +void lb_push_context_onto_stack(lbProcedure *p, lbAddr ctx) { + ctx.kind = lbAddr_Context; + lbContextData cd = {ctx, p->scope_index}; + array_add(&p->context_stack, cd); +} + + +lbAddr lb_find_or_generate_context_ptr(lbProcedure *p) { + if (p->context_stack.count > 0) { + return p->context_stack[p->context_stack.count-1].ctx; + } + + Type *pt = base_type(p->type); + GB_ASSERT(pt->kind == Type_Proc); + if (pt->Proc.calling_convention != ProcCC_Odin) { + return p->module->global_default_context; + } else { + lbAddr c = lb_add_local_generated(p, t_context, false); + c.kind = lbAddr_Context; + lb_push_context_onto_stack(p, c); + lb_addr_store(p, c, lb_addr_load(p, p->module->global_default_context)); + lb_emit_init_context(p, c); + return c; + } +} + +lbValue lb_address_from_load_or_generate_local(lbProcedure *p, lbValue value) { + if (LLVMIsALoadInst(value.value)) { + lbValue res = {}; + res.value = LLVMGetOperand(value.value, 0); + res.type = alloc_type_pointer(value.type); + return res; + } + + GB_ASSERT(is_type_typed(value.type)); + + lbAddr res = lb_add_local_generated(p, value.type, false); + lb_addr_store(p, res, value); + return res.addr; +} + +lbValue lb_copy_value_to_ptr(lbProcedure *p, lbValue val, Type *new_type, i64 alignment) { + i64 type_alignment = type_align_of(new_type); + if (alignment < type_alignment) { + alignment = type_alignment; + } + GB_ASSERT_MSG(are_types_identical(new_type, val.type), "%s %s", type_to_string(new_type), type_to_string(val.type)); + + lbAddr ptr = lb_add_local_generated(p, new_type, false); + LLVMSetAlignment(ptr.addr.value, cast(unsigned)alignment); + lb_addr_store(p, ptr, val); + ptr.kind = lbAddr_Context; + return ptr.addr; +} + +lbValue lb_emit_struct_ep(lbProcedure *p, lbValue s, i32 index) { + gbAllocator a = heap_allocator(); + GB_ASSERT(is_type_pointer(s.type)); + Type *t = base_type(type_deref(s.type)); + Type *result_type = nullptr; + + if (t->kind == Type_Opaque) { + t = t->Opaque.elem; + } + + if (is_type_struct(t)) { + result_type = get_struct_field_type(t, index); + } else if (is_type_union(t)) { + GB_ASSERT(index == -1); + return lb_emit_union_tag_ptr(p, s); + } else if (is_type_tuple(t)) { + GB_ASSERT(t->Tuple.variables.count > 0); + result_type = t->Tuple.variables[index]->type; + } else if (is_type_complex(t)) { + Type *ft = base_complex_elem_type(t); + switch (index) { + case 0: result_type = ft; break; + case 1: result_type = ft; break; + } + } else if (is_type_quaternion(t)) { + Type *ft = base_complex_elem_type(t); + switch (index) { + case 0: result_type = ft; break; + case 1: result_type = ft; break; + case 2: result_type = ft; break; + case 3: result_type = ft; break; + } + } else if (is_type_slice(t)) { + switch (index) { + case 0: result_type = alloc_type_pointer(t->Slice.elem); break; + case 1: result_type = t_int; break; + } + } else if (is_type_string(t)) { + switch (index) { + case 0: result_type = t_u8_ptr; break; + case 1: result_type = t_int; break; + } + } else if (is_type_any(t)) { + switch (index) { + case 0: result_type = t_rawptr; break; + case 1: result_type = t_typeid; break; + } + } else if (is_type_dynamic_array(t)) { + switch (index) { + case 0: result_type = alloc_type_pointer(t->DynamicArray.elem); break; + case 1: result_type = t_int; break; + case 2: result_type = t_int; break; + case 3: result_type = t_allocator; break; + } + } else if (is_type_map(t)) { + init_map_internal_types(t); + Type *itp = alloc_type_pointer(t->Map.internal_type); + s = lb_emit_transmute(p, s, itp); + + Type *gst = t->Map.internal_type; + GB_ASSERT(gst->kind == Type_Struct); + switch (index) { + case 0: result_type = get_struct_field_type(gst, 0); break; + case 1: result_type = get_struct_field_type(gst, 1); break; + } + } else if (is_type_array(t)) { + return lb_emit_array_epi(p, s, index); + } else { + GB_PANIC("TODO(bill): struct_gep type: %s, %d", type_to_string(s.type), index); + } + + GB_ASSERT_MSG(result_type != nullptr, "%s %d", type_to_string(t), index); + + if (lb_is_const(s)) { + lbModule *m = p->module; + lbValue res = {}; + LLVMValueRef indices[2] = {llvm_zero32(m), LLVMConstInt(lb_type(m, t_i32), index, false)}; + res.value = LLVMConstGEP(s.value, indices, gb_count_of(indices)); + res.type = alloc_type_pointer(result_type); + return res; + } else { + lbValue res = {}; + res.value = LLVMBuildStructGEP(p->builder, s.value, cast(unsigned)index, ""); + res.type = alloc_type_pointer(result_type); + return res; + } +} + +lbValue lb_emit_struct_ev(lbProcedure *p, lbValue s, i32 index) { + if (LLVMIsALoadInst(s.value)) { + lbValue res = {}; + res.value = LLVMGetOperand(s.value, 0); + res.type = alloc_type_pointer(s.type); + lbValue ptr = lb_emit_struct_ep(p, res, index); + return lb_emit_load(p, ptr); + } + + gbAllocator a = heap_allocator(); + Type *t = base_type(s.type); + Type *result_type = nullptr; + + switch (t->kind) { + case Type_Basic: + switch (t->Basic.kind) { + case Basic_string: + switch (index) { + case 0: result_type = t_u8_ptr; break; + case 1: result_type = t_int; break; + } + break; + case Basic_any: + switch (index) { + case 0: result_type = t_rawptr; break; + case 1: result_type = t_typeid; break; + } + break; + case Basic_complex64: case Basic_complex128: + { + Type *ft = base_complex_elem_type(t); + switch (index) { + case 0: result_type = ft; break; + case 1: result_type = ft; break; + } + break; + } + case Basic_quaternion128: case Basic_quaternion256: + { + Type *ft = base_complex_elem_type(t); + switch (index) { + case 0: result_type = ft; break; + case 1: result_type = ft; break; + case 2: result_type = ft; break; + case 3: result_type = ft; break; + } + break; + } + } + break; + case Type_Struct: + result_type = get_struct_field_type(t, index); + break; + case Type_Union: + GB_ASSERT(index == -1); + // return lb_emit_union_tag_value(p, s); + GB_PANIC("lb_emit_union_tag_value"); + + case Type_Tuple: + GB_ASSERT(t->Tuple.variables.count > 0); + result_type = t->Tuple.variables[index]->type; + if (t->Tuple.variables.count == 1) { + return s; + } + break; + case Type_Slice: + switch (index) { + case 0: result_type = alloc_type_pointer(t->Slice.elem); break; + case 1: result_type = t_int; break; + } + break; + case Type_DynamicArray: + switch (index) { + case 0: result_type = alloc_type_pointer(t->DynamicArray.elem); break; + case 1: result_type = t_int; break; + case 2: result_type = t_int; break; + case 3: result_type = t_allocator; break; + } + break; + + case Type_Map: + { + init_map_internal_types(t); + Type *gst = t->Map.generated_struct_type; + switch (index) { + case 0: result_type = get_struct_field_type(gst, 0); break; + case 1: result_type = get_struct_field_type(gst, 1); break; + } + } + break; + + case Type_Array: + result_type = t->Array.elem; + break; + + default: + GB_PANIC("TODO(bill): struct_ev type: %s, %d", type_to_string(s.type), index); + break; + } + + GB_ASSERT_MSG(result_type != nullptr, "%s, %d", type_to_string(s.type), index); + + + lbValue res = {}; + res.value = LLVMBuildExtractValue(p->builder, s.value, cast(unsigned)index, ""); + res.type = result_type; + return res; +} + +lbValue lb_emit_deep_field_gep(lbProcedure *p, lbValue e, Selection sel) { + GB_ASSERT(sel.index.count > 0); + Type *type = type_deref(e.type); + gbAllocator a = heap_allocator(); + + for_array(i, sel.index) { + i32 index = cast(i32)sel.index[i]; + if (is_type_pointer(type)) { + type = type_deref(type); + e = lb_emit_load(p, e); + } + type = core_type(type); + if (type->kind == Type_Opaque) { + type = type->Opaque.elem; + } + + if (is_type_quaternion(type)) { + e = lb_emit_struct_ep(p, e, index); + } else if (is_type_raw_union(type)) { + type = get_struct_field_type(type, index); + GB_ASSERT(is_type_pointer(e.type)); + e = lb_emit_transmute(p, e, alloc_type_pointer(type)); + } else if (is_type_struct(type)) { + type = get_struct_field_type(type, index); + e = lb_emit_struct_ep(p, e, index); + } else if (type->kind == Type_Union) { + GB_ASSERT(index == -1); + type = t_type_info_ptr; + e = lb_emit_struct_ep(p, e, index); + } else if (type->kind == Type_Tuple) { + type = type->Tuple.variables[index]->type; + e = lb_emit_struct_ep(p, e, index); + } else if (type->kind == Type_Basic) { + switch (type->Basic.kind) { + case Basic_any: { + if (index == 0) { + type = t_rawptr; + } else if (index == 1) { + type = t_type_info_ptr; + } + e = lb_emit_struct_ep(p, e, index); + break; + } + + case Basic_string: + e = lb_emit_struct_ep(p, e, index); + break; + + default: + GB_PANIC("un-gep-able type"); + break; + } + } else if (type->kind == Type_Slice) { + e = lb_emit_struct_ep(p, e, index); + } else if (type->kind == Type_DynamicArray) { + e = lb_emit_struct_ep(p, e, index); + } else if (type->kind == Type_Array) { + e = lb_emit_array_epi(p, e, index); + } else if (type->kind == Type_Map) { + e = lb_emit_struct_ep(p, e, index); + } else { + GB_PANIC("un-gep-able type %s", type_to_string(type)); + } + } + + return e; +} + + +lbValue lb_emit_deep_field_ev(lbProcedure *p, lbValue e, Selection sel) { + lbValue ptr = lb_address_from_load_or_generate_local(p, e); + lbValue res = lb_emit_deep_field_gep(p, ptr, sel); + return lb_emit_load(p, res); +} + + + +void lb_build_defer_stmt(lbProcedure *p, lbDefer d) { + // NOTE(bill): The prev block may defer injection before it's terminator + LLVMValueRef last_instr = LLVMGetLastInstruction(p->curr_block->block); + if (last_instr != nullptr && LLVMIsAReturnInst(last_instr)) { + // NOTE(bill): ReturnStmt defer stuff will be handled previously + return; + } + + lbBlock *b = lb_create_block(p, "defer"); + if (last_instr == nullptr || !LLVMIsATerminatorInst(last_instr)) { + lb_emit_jump(p, b); + } + + if (last_instr == nullptr || !LLVMIsATerminatorInst(last_instr)) { + lb_emit_jump(p, b); + } + lb_start_block(p, b); + if (d.kind == lbDefer_Node) { + lb_build_stmt(p, d.stmt); + } else if (d.kind == lbDefer_Instr) { + // NOTE(bill): Need to make a new copy + LLVMValueRef instr = LLVMInstructionClone(d.instr.value); + LLVMInsertIntoBuilder(p->builder, instr); + } else if (d.kind == lbDefer_Proc) { + lb_emit_call(p, d.proc.deferred, d.proc.result_as_args); + } +} + +void lb_emit_defer_stmts(lbProcedure *p, lbDeferExitKind kind, lbBlock *block) { + isize count = p->defer_stmts.count; + isize i = count; + while (i --> 0) { + lbDefer d = p->defer_stmts[i]; + + if (kind == lbDeferExit_Default) { + if (p->scope_index == d.scope_index && + d.scope_index > 0) { // TODO(bill): Which is correct: > 0 or > 1? + lb_build_defer_stmt(p, d); + array_pop(&p->defer_stmts); + continue; + } else { + break; + } + } else if (kind == lbDeferExit_Return) { + lb_build_defer_stmt(p, d); + } else if (kind == lbDeferExit_Branch) { + GB_ASSERT(block != nullptr); + isize lower_limit = block->scope_index; + if (lower_limit < d.scope_index) { + lb_build_defer_stmt(p, d); + } + } + } +} + +lbDefer lb_add_defer_node(lbProcedure *p, isize scope_index, Ast *stmt) { + lbDefer d = {lbDefer_Node}; + d.scope_index = scope_index; + d.context_stack_count = p->context_stack.count; + d.block = p->curr_block; + d.stmt = stmt; + array_add(&p->defer_stmts, d); + return d; +} + +lbDefer lb_add_defer_proc(lbProcedure *p, isize scope_index, lbValue deferred, Array<lbValue> const &result_as_args) { + lbDefer d = {lbDefer_Proc}; + d.scope_index = p->scope_index; + d.block = p->curr_block; + d.proc.deferred = deferred; + d.proc.result_as_args = result_as_args; + array_add(&p->defer_stmts, d); + return d; +} + + + +Array<lbValue> lb_value_to_array(lbProcedure *p, lbValue value) { + Array<lbValue> array = {}; + Type *t = base_type(value.type); + if (t == nullptr) { + // Do nothing + } else if (is_type_tuple(t)) { + GB_ASSERT(t->kind == Type_Tuple); + auto *rt = &t->Tuple; + if (rt->variables.count > 0) { + array = array_make<lbValue>(heap_allocator(), rt->variables.count); + for_array(i, rt->variables) { + lbValue elem = lb_emit_struct_ev(p, value, cast(i32)i); + array[i] = elem; + } + } + } else { + array = array_make<lbValue>(heap_allocator(), 1); + array[0] = value; + } + return array; +} + + + +lbValue lb_emit_call_internal(lbProcedure *p, lbValue value, lbValue return_ptr, Array<lbValue> const &processed_args, Type *abi_rt, lbAddr context_ptr, ProcInlining inlining) { + unsigned arg_count = cast(unsigned)processed_args.count; + if (return_ptr.value != nullptr) { + arg_count += 1; + } + if (context_ptr.addr.value != nullptr) { + arg_count += 1; + } + + LLVMValueRef *args = gb_alloc_array(heap_allocator(), LLVMValueRef, arg_count); + isize arg_index = 0; + if (return_ptr.value != nullptr) { + args[arg_index++] = return_ptr.value; + } + for_array(i, processed_args) { + lbValue arg = processed_args[i]; + args[arg_index++] = arg.value; + } + if (context_ptr.addr.value != nullptr) { + args[arg_index++] = context_ptr.addr.value; + } + + LLVMBasicBlockRef curr_block = LLVMGetInsertBlock(p->builder); + GB_ASSERT(curr_block != p->decl_block->block); + + LLVMValueRef ret = LLVMBuildCall2(p->builder, LLVMGetElementType(lb_type(p->module, value.type)), value.value, args, arg_count, "");; + lbValue res = {}; + res.value = ret; + res.type = abi_rt; + return res; +} + +lbValue lb_emit_runtime_call(lbProcedure *p, char const *c_name, Array<lbValue> const &args) { + String name = make_string_c(c_name); + + + AstPackage *pkg = p->module->info->runtime_package; + Entity *e = scope_lookup_current(pkg->scope, name); + + lbValue *found = nullptr; + if (p->module != e->code_gen_module) { + gb_mutex_lock(&p->module->mutex); + } + found = map_get(&e->code_gen_module->values, hash_entity(e)); + if (p->module != e->code_gen_module) { + gb_mutex_unlock(&p->module->mutex); + } + + GB_ASSERT_MSG(found != nullptr, "%s", c_name); + return lb_emit_call(p, *found, args); +} + +lbValue lb_emit_call(lbProcedure *p, lbValue value, Array<lbValue> const &args, ProcInlining inlining, bool use_return_ptr_hint) { + lbModule *m = p->module; + + Type *pt = base_type(value.type); + GB_ASSERT(pt->kind == Type_Proc); + Type *results = pt->Proc.results; + + if (p->entity != nullptr) { + if (p->entity->flags & EntityFlag_Disabled) { + return {}; + } + } + + lbAddr context_ptr = {}; + if (pt->Proc.calling_convention == ProcCC_Odin) { + context_ptr = lb_find_or_generate_context_ptr(p); + } + + set_procedure_abi_types(heap_allocator(), pt); + + bool is_c_vararg = pt->Proc.c_vararg; + isize param_count = pt->Proc.param_count; + if (is_c_vararg) { + GB_ASSERT(param_count-1 <= args.count); + param_count -= 1; + } else { + GB_ASSERT_MSG(param_count == args.count, "%td == %td", param_count, args.count); + } + + auto processed_args = array_make<lbValue>(heap_allocator(), 0, args.count); + + for (isize i = 0; i < param_count; i++) { + Entity *e = pt->Proc.params->Tuple.variables[i]; + if (e->kind != Entity_Variable) { + // array_add(&processed_args, args[i]); + continue; + } + GB_ASSERT(e->flags & EntityFlag_Param); + + Type *original_type = e->type; + Type *new_type = pt->Proc.abi_compat_params[i]; + Type *arg_type = args[i].type; + + if (are_types_identical(arg_type, new_type)) { + // NOTE(bill): Done + array_add(&processed_args, args[i]); + } else if (!are_types_identical(original_type, new_type)) { + if (is_type_pointer(new_type) && !is_type_pointer(original_type)) { + if (e->flags&EntityFlag_ImplicitReference) { + array_add(&processed_args, lb_address_from_load_or_generate_local(p, args[i])); + } else if (!is_type_pointer(arg_type)) { + array_add(&processed_args, lb_copy_value_to_ptr(p, args[i], original_type, 16)); + } + } else if (is_type_integer(new_type) || is_type_float(new_type)) { + array_add(&processed_args, lb_emit_transmute(p, args[i], new_type)); + } else if (new_type == t_llvm_bool) { + array_add(&processed_args, lb_emit_conv(p, args[i], new_type)); + } else if (is_type_simd_vector(new_type)) { + array_add(&processed_args, lb_emit_transmute(p, args[i], new_type)); + } else if (is_type_tuple(new_type)) { + Type *abi_type = pt->Proc.abi_compat_params[i]; + Type *st = struct_type_from_systemv_distribute_struct_fields(abi_type); + lbValue x = lb_emit_transmute(p, args[i], st); + for (isize j = 0; j < new_type->Tuple.variables.count; j++) { + lbValue xx = lb_emit_struct_ev(p, x, cast(i32)j); + array_add(&processed_args, xx); + } + } + } else { + lbValue x = lb_emit_conv(p, args[i], new_type); + array_add(&processed_args, x); + } + } + + if (inlining == ProcInlining_none) { + inlining = p->inlining; + } + + lbValue result = {}; + + Type *abi_rt = reduce_tuple_to_single_type(pt->Proc.abi_compat_result_type); + Type *rt = reduce_tuple_to_single_type(results); + if (pt->Proc.return_by_pointer) { + lbValue return_ptr = {}; + if (use_return_ptr_hint && p->return_ptr_hint_value.value != nullptr) { + if (are_types_identical(type_deref(p->return_ptr_hint_value.type), rt)) { + return_ptr = p->return_ptr_hint_value; + p->return_ptr_hint_used = true; + } + } + if (return_ptr.value == nullptr) { + lbAddr r = lb_add_local_generated(p, rt, true); + return_ptr = r.addr; + } + GB_ASSERT(is_type_pointer(return_ptr.type)); + lb_emit_call_internal(p, value, return_ptr, processed_args, nullptr, context_ptr, inlining); + result = lb_emit_load(p, return_ptr); + } else { + result = lb_emit_call_internal(p, value, {}, processed_args, abi_rt, context_ptr, inlining); + if (abi_rt != rt) { + result = lb_emit_transmute(p, result, rt); + } + } + + Entity **found = map_get(&p->module->procedure_values, hash_pointer(value.value)); + if (found != nullptr) { + Entity *e = *found; + if (e != nullptr && entity_has_deferred_procedure(e)) { + DeferredProcedureKind kind = e->Procedure.deferred_procedure.kind; + Entity *deferred_entity = e->Procedure.deferred_procedure.entity; + lbValue *deferred_found = map_get(&p->module->values, hash_entity(deferred_entity)); + GB_ASSERT(deferred_found != nullptr); + lbValue deferred = *deferred_found; + + + auto in_args = args; + Array<lbValue> result_as_args = {}; + switch (kind) { + case DeferredProcedure_none: + break; + case DeferredProcedure_in: + result_as_args = in_args; + break; + case DeferredProcedure_out: + result_as_args = lb_value_to_array(p, result); + break; + } + + lb_add_defer_proc(p, p->scope_index, deferred, result_as_args); + } + } + + return result; +} + +lbValue lb_emit_array_ep(lbProcedure *p, lbValue s, lbValue index) { + Type *t = s.type; + GB_ASSERT(is_type_pointer(t)); + Type *st = base_type(type_deref(t)); + GB_ASSERT_MSG(is_type_array(st) || is_type_enumerated_array(st), "%s", type_to_string(st)); + GB_ASSERT_MSG(is_type_integer(index.type), "%s", type_to_string(index.type)); + + LLVMValueRef indices[2] = {}; + indices[0] = llvm_zero32(p->module); + indices[1] = lb_emit_conv(p, index, t_int).value; + + Type *ptr = base_array_type(st); + lbValue res = {}; + res.value = LLVMBuildGEP(p->builder, s.value, indices, 2, ""); + res.type = alloc_type_pointer(ptr); + return res; +} + +lbValue lb_emit_array_epi(lbProcedure *p, lbValue s, isize index) { + Type *t = s.type; + GB_ASSERT(is_type_pointer(t)); + Type *st = base_type(type_deref(t)); + GB_ASSERT_MSG(is_type_array(st) || is_type_enumerated_array(st), "%s", type_to_string(st)); + + GB_ASSERT(0 <= index); + Type *ptr = base_array_type(st); + + + LLVMValueRef indices[2] = { + LLVMConstInt(lb_type(p->module, t_int), 0, false), + LLVMConstInt(lb_type(p->module, t_int), cast(unsigned)index, false), + }; + + lbValue res = {}; + if (lb_is_const(s)) { + res.value = LLVMConstGEP(s.value, indices, gb_count_of(indices)); + } else { + res.value = LLVMBuildGEP(p->builder, s.value, indices, gb_count_of(indices), ""); + } + res.type = alloc_type_pointer(ptr); + return res; +} + +lbValue lb_emit_ptr_offset(lbProcedure *p, lbValue ptr, lbValue index) { + LLVMValueRef indices[1] = {index.value}; + lbValue res = {}; + res.type = ptr.type; + + if (lb_is_const(ptr) && lb_is_const(index)) { + res.value = LLVMConstGEP(ptr.value, indices, 1); + } else { + res.value = LLVMBuildGEP(p->builder, ptr.value, indices, 1, ""); + } + return res; +} + +LLVMValueRef llvm_const_slice(lbValue data, lbValue len) { + GB_ASSERT(is_type_pointer(data.type)); + GB_ASSERT(are_types_identical(len.type, t_int)); + LLVMValueRef vals[2] = { + data.value, + len.value, + }; + return LLVMConstStruct(vals, gb_count_of(vals), false); +} + + +void lb_fill_slice(lbProcedure *p, lbAddr const &slice, lbValue base_elem, lbValue len) { + Type *t = lb_addr_type(slice); + GB_ASSERT(is_type_slice(t)); + lbValue ptr = lb_addr_get_ptr(p, slice); + lb_emit_store(p, lb_emit_struct_ep(p, ptr, 0), base_elem); + lb_emit_store(p, lb_emit_struct_ep(p, ptr, 1), len); +} +void lb_fill_string(lbProcedure *p, lbAddr const &string, lbValue base_elem, lbValue len) { + Type *t = lb_addr_type(string); + GB_ASSERT(is_type_string(t)); + lbValue ptr = lb_addr_get_ptr(p, string); + lb_emit_store(p, lb_emit_struct_ep(p, ptr, 0), base_elem); + lb_emit_store(p, lb_emit_struct_ep(p, ptr, 1), len); +} + +lbValue lb_string_elem(lbProcedure *p, lbValue string) { + Type *t = base_type(string.type); + GB_ASSERT(t->kind == Type_Basic && t->Basic.kind == Basic_string); + return lb_emit_struct_ev(p, string, 0); +} +lbValue lb_string_len(lbProcedure *p, lbValue string) { + Type *t = base_type(string.type); + GB_ASSERT_MSG(t->kind == Type_Basic && t->Basic.kind == Basic_string, "%s", type_to_string(t)); + return lb_emit_struct_ev(p, string, 1); +} + +lbValue lb_cstring_len(lbProcedure *p, lbValue value) { + GB_ASSERT(is_type_cstring(value.type)); + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = lb_emit_conv(p, value, t_cstring); + return lb_emit_runtime_call(p, "cstring_len", args); +} + + +lbValue lb_array_elem(lbProcedure *p, lbValue array_ptr) { + Type *t = type_deref(array_ptr.type); + GB_ASSERT(is_type_array(t)); + return lb_emit_struct_ep(p, array_ptr, 0); +} + +lbValue lb_slice_elem(lbProcedure *p, lbValue slice) { + GB_ASSERT(is_type_slice(slice.type)); + return lb_emit_struct_ev(p, slice, 0); +} +lbValue lb_slice_len(lbProcedure *p, lbValue slice) { + GB_ASSERT(is_type_slice(slice.type)); + return lb_emit_struct_ev(p, slice, 1); +} +lbValue lb_dynamic_array_elem(lbProcedure *p, lbValue da) { + GB_ASSERT(is_type_dynamic_array(da.type)); + return lb_emit_struct_ev(p, da, 0); +} +lbValue lb_dynamic_array_len(lbProcedure *p, lbValue da) { + GB_ASSERT(is_type_dynamic_array(da.type)); + return lb_emit_struct_ev(p, da, 1); +} +lbValue lb_dynamic_array_cap(lbProcedure *p, lbValue da) { + GB_ASSERT(is_type_dynamic_array(da.type)); + return lb_emit_struct_ev(p, da, 2); +} +lbValue lb_dynamic_array_allocator(lbProcedure *p, lbValue da) { + GB_ASSERT(is_type_dynamic_array(da.type)); + return lb_emit_struct_ev(p, da, 3); +} + +lbValue lb_map_entries(lbProcedure *p, lbValue value) { + gbAllocator a = heap_allocator(); + Type *t = base_type(value.type); + GB_ASSERT_MSG(t->kind == Type_Map, "%s", type_to_string(t)); + init_map_internal_types(t); + Type *gst = t->Map.generated_struct_type; + i32 index = 1; + lbValue entries = lb_emit_struct_ev(p, value, index); + return entries; +} + +lbValue lb_map_entries_ptr(lbProcedure *p, lbValue value) { + gbAllocator a = heap_allocator(); + Type *t = base_type(type_deref(value.type)); + GB_ASSERT_MSG(t->kind == Type_Map, "%s", type_to_string(t)); + init_map_internal_types(t); + Type *gst = t->Map.generated_struct_type; + i32 index = 1; + lbValue entries = lb_emit_struct_ep(p, value, index); + return entries; +} + +lbValue lb_map_len(lbProcedure *p, lbValue value) { + lbValue entries = lb_map_entries(p, value); + return lb_dynamic_array_len(p, entries); +} + +lbValue lb_map_cap(lbProcedure *p, lbValue value) { + lbValue entries = lb_map_entries(p, value); + return lb_dynamic_array_cap(p, entries); +} + +lbValue lb_soa_struct_len(lbProcedure *p, lbValue value) { + Type *t = base_type(value.type); + bool is_ptr = false; + if (is_type_pointer(t)) { + is_ptr = true; + t = base_type(type_deref(t)); + } + + + if (t->Struct.soa_kind == StructSoa_Fixed) { + return lb_const_int(p->module, t_int, t->Struct.soa_count); + } + + GB_ASSERT(t->Struct.soa_kind == StructSoa_Slice || + t->Struct.soa_kind == StructSoa_Dynamic); + + isize n = 0; + Type *elem = base_type(t->Struct.soa_elem); + if (elem->kind == Type_Struct) { + n = elem->Struct.fields.count; + } else if (elem->kind == Type_Array) { + n = elem->Array.count; + } else { + GB_PANIC("Unreachable"); + } + + if (is_ptr) { + lbValue v = lb_emit_struct_ep(p, value, cast(i32)n); + return lb_emit_load(p, v); + } + return lb_emit_struct_ev(p, value, cast(i32)n); +} + +lbValue lb_soa_struct_cap(lbProcedure *p, lbValue value) { + Type *t = base_type(value.type); + + bool is_ptr = false; + if (is_type_pointer(t)) { + is_ptr = true; + t = base_type(type_deref(t)); + } + + if (t->Struct.soa_kind == StructSoa_Fixed) { + return lb_const_int(p->module, t_int, t->Struct.soa_count); + } + + GB_ASSERT(t->Struct.soa_kind == StructSoa_Dynamic); + + isize n = 0; + Type *elem = base_type(t->Struct.soa_elem); + if (elem->kind == Type_Struct) { + n = elem->Struct.fields.count+1; + } else if (elem->kind == Type_Array) { + n = elem->Array.count+1; + } else { + GB_PANIC("Unreachable"); + } + + if (is_ptr) { + lbValue v = lb_emit_struct_ep(p, value, cast(i32)n); + return lb_emit_load(p, v); + } + return lb_emit_struct_ev(p, value, cast(i32)n); +} + + + + +lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv, BuiltinProcId id) { + ast_node(ce, CallExpr, expr); + + switch (id) { + case BuiltinProc_DIRECTIVE: { + ast_node(bd, BasicDirective, ce->proc); + String name = bd->name; + GB_ASSERT(name == "location"); + String procedure = p->entity->token.string; + TokenPos pos = ast_token(ce->proc).pos; + if (ce->args.count > 0) { + Ast *ident = unselector_expr(ce->args[0]); + GB_ASSERT(ident->kind == Ast_Ident); + Entity *e = entity_of_ident(ident); + GB_ASSERT(e != nullptr); + + if (e->parent_proc_decl != nullptr && e->parent_proc_decl->entity != nullptr) { + procedure = e->parent_proc_decl->entity->token.string; + } else { + procedure = str_lit(""); + } + pos = e->token.pos; + + } + return lb_emit_source_code_location(p, procedure, pos); + } + + case BuiltinProc_type_info_of: { + Ast *arg = ce->args[0]; + TypeAndValue tav = type_and_value_of_expr(arg); + if (tav.mode == Addressing_Type) { + Type *t = default_type(type_of_expr(arg)); + return lb_type_info(p->module, t); + } + GB_ASSERT(is_type_typeid(tav.type)); + + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = lb_build_expr(p, arg); + return lb_emit_runtime_call(p, "__type_info_of", args); + } + + case BuiltinProc_typeid_of: { + Ast *arg = ce->args[0]; + TypeAndValue tav = type_and_value_of_expr(arg); + if (tav.mode == Addressing_Type) { + Type *t = default_type(type_of_expr(arg)); + return lb_typeid(p->module, t); + } + Type *t = base_type(tav.type); + GB_ASSERT(are_types_identical(t, t_type_info_ptr)); + + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = lb_emit_conv(p, lb_build_expr(p, arg), t_type_info_ptr); + return lb_emit_runtime_call(p, "__typeid_of", args); + } + + case BuiltinProc_len: { + lbValue v = lb_build_expr(p, ce->args[0]); + Type *t = base_type(v.type); + if (is_type_pointer(t)) { + // IMPORTANT TODO(bill): Should there be a nil pointer check? + v = lb_emit_load(p, v); + t = type_deref(t); + } + if (is_type_cstring(t)) { + return lb_cstring_len(p, v); + } else if (is_type_string(t)) { + return lb_string_len(p, v); + } else if (is_type_array(t)) { + GB_PANIC("Array lengths are constant"); + } else if (is_type_slice(t)) { + return lb_slice_len(p, v); + } else if (is_type_dynamic_array(t)) { + return lb_dynamic_array_len(p, v); + } else if (is_type_map(t)) { + return lb_map_len(p, v); + } else if (is_type_soa_struct(t)) { + return lb_soa_struct_len(p, v); + } + + GB_PANIC("Unreachable"); + break; + } + + case BuiltinProc_cap: { + lbValue v = lb_build_expr(p, ce->args[0]); + Type *t = base_type(v.type); + if (is_type_pointer(t)) { + // IMPORTANT TODO(bill): Should there be a nil pointer check? + v = lb_emit_load(p, v); + t = type_deref(t); + } + if (is_type_string(t)) { + GB_PANIC("Unreachable"); + } else if (is_type_array(t)) { + GB_PANIC("Array lengths are constant"); + } else if (is_type_slice(t)) { + return lb_slice_len(p, v); + } else if (is_type_dynamic_array(t)) { + return lb_dynamic_array_cap(p, v); + } else if (is_type_map(t)) { + return lb_map_cap(p, v); + } else if (is_type_soa_struct(t)) { + return lb_soa_struct_cap(p, v); + } + + GB_PANIC("Unreachable"); + + break; + } + + case BuiltinProc_swizzle: { + lbAddr addr = lb_build_addr(p, ce->args[0]); + isize index_count = ce->args.count-1; + if (index_count == 0) { + return lb_addr_load(p, addr); + } + lbValue src = lb_addr_get_ptr(p, addr); + // TODO(bill): Should this be zeroed or not? + lbAddr dst = lb_add_local_generated(p, tv.type, true); + lbValue dst_ptr = lb_addr_get_ptr(p, dst); + + for (i32 i = 1; i < ce->args.count; i++) { + TypeAndValue tv = type_and_value_of_expr(ce->args[i]); + GB_ASSERT(is_type_integer(tv.type)); + GB_ASSERT(tv.value.kind == ExactValue_Integer); + + i32 src_index = cast(i32)big_int_to_i64(&tv.value.value_integer); + i32 dst_index = i-1; + + lbValue src_elem = lb_emit_array_epi(p, src, src_index); + lbValue dst_elem = lb_emit_array_epi(p, dst_ptr, dst_index); + + lb_emit_store(p, dst_elem, lb_emit_load(p, src_elem)); + } + return lb_addr_load(p, dst); + } + + case BuiltinProc_complex: { + lbValue real = lb_build_expr(p, ce->args[0]); + lbValue imag = lb_build_expr(p, ce->args[1]); + lbAddr dst_addr = lb_add_local_generated(p, tv.type, false); + lbValue dst = lb_addr_get_ptr(p, dst_addr); + + Type *ft = base_complex_elem_type(tv.type); + real = lb_emit_conv(p, real, ft); + imag = lb_emit_conv(p, imag, ft); + lb_emit_store(p, lb_emit_struct_ep(p, dst, 0), real); + lb_emit_store(p, lb_emit_struct_ep(p, dst, 1), imag); + + return lb_emit_load(p, dst); + } + + case BuiltinProc_quaternion: { + lbValue real = lb_build_expr(p, ce->args[0]); + lbValue imag = lb_build_expr(p, ce->args[1]); + lbValue jmag = lb_build_expr(p, ce->args[2]); + lbValue kmag = lb_build_expr(p, ce->args[3]); + + // @QuaternionLayout + lbAddr dst_addr = lb_add_local_generated(p, tv.type, false); + lbValue dst = lb_addr_get_ptr(p, dst_addr); + + Type *ft = base_complex_elem_type(tv.type); + real = lb_emit_conv(p, real, ft); + imag = lb_emit_conv(p, imag, ft); + jmag = lb_emit_conv(p, jmag, ft); + kmag = lb_emit_conv(p, kmag, ft); + lb_emit_store(p, lb_emit_struct_ep(p, dst, 3), real); + lb_emit_store(p, lb_emit_struct_ep(p, dst, 0), imag); + lb_emit_store(p, lb_emit_struct_ep(p, dst, 1), jmag); + lb_emit_store(p, lb_emit_struct_ep(p, dst, 2), kmag); + + return lb_emit_load(p, dst); + } + + case BuiltinProc_real: { + lbValue val = lb_build_expr(p, ce->args[0]); + if (is_type_complex(val.type)) { + lbValue real = lb_emit_struct_ev(p, val, 0); + return lb_emit_conv(p, real, tv.type); + } else if (is_type_quaternion(val.type)) { + // @QuaternionLayout + lbValue real = lb_emit_struct_ev(p, val, 3); + return lb_emit_conv(p, real, tv.type); + } + GB_PANIC("invalid type for real"); + return {}; + } + case BuiltinProc_imag: { + lbValue val = lb_build_expr(p, ce->args[0]); + if (is_type_complex(val.type)) { + lbValue imag = lb_emit_struct_ev(p, val, 1); + return lb_emit_conv(p, imag, tv.type); + } else if (is_type_quaternion(val.type)) { + // @QuaternionLayout + lbValue imag = lb_emit_struct_ev(p, val, 0); + return lb_emit_conv(p, imag, tv.type); + } + GB_PANIC("invalid type for imag"); + return {}; + } + case BuiltinProc_jmag: { + lbValue val = lb_build_expr(p, ce->args[0]); + if (is_type_quaternion(val.type)) { + // @QuaternionLayout + lbValue imag = lb_emit_struct_ev(p, val, 1); + return lb_emit_conv(p, imag, tv.type); + } + GB_PANIC("invalid type for jmag"); + return {}; + } + case BuiltinProc_kmag: { + lbValue val = lb_build_expr(p, ce->args[0]); + if (is_type_quaternion(val.type)) { + // @QuaternionLayout + lbValue imag = lb_emit_struct_ev(p, val, 2); + return lb_emit_conv(p, imag, tv.type); + } + GB_PANIC("invalid type for kmag"); + return {}; + } + + case BuiltinProc_conj: { + lbValue val = lb_build_expr(p, ce->args[0]); + lbValue res = {}; + Type *t = val.type; + if (is_type_complex(t)) { + res = lb_addr_get_ptr(p, lb_add_local_generated(p, tv.type, false)); + lbValue real = lb_emit_struct_ev(p, val, 0); + lbValue imag = lb_emit_struct_ev(p, val, 1); + imag = lb_emit_unary_arith(p, Token_Sub, imag, imag.type); + lb_emit_store(p, lb_emit_struct_ep(p, res, 0), real); + lb_emit_store(p, lb_emit_struct_ep(p, res, 1), imag); + } else if (is_type_quaternion(t)) { + // @QuaternionLayout + res = lb_addr_get_ptr(p, lb_add_local_generated(p, tv.type, false)); + lbValue real = lb_emit_struct_ev(p, val, 3); + lbValue imag = lb_emit_struct_ev(p, val, 0); + lbValue jmag = lb_emit_struct_ev(p, val, 1); + lbValue kmag = lb_emit_struct_ev(p, val, 2); + imag = lb_emit_unary_arith(p, Token_Sub, imag, imag.type); + jmag = lb_emit_unary_arith(p, Token_Sub, jmag, jmag.type); + kmag = lb_emit_unary_arith(p, Token_Sub, kmag, kmag.type); + lb_emit_store(p, lb_emit_struct_ep(p, res, 3), real); + lb_emit_store(p, lb_emit_struct_ep(p, res, 0), imag); + lb_emit_store(p, lb_emit_struct_ep(p, res, 1), jmag); + lb_emit_store(p, lb_emit_struct_ep(p, res, 2), kmag); + } + return lb_emit_load(p, res); + } + + case BuiltinProc_expand_to_tuple: { + lbValue val = lb_build_expr(p, ce->args[0]); + Type *t = base_type(val.type); + + if (!is_type_tuple(tv.type)) { + if (t->kind == Type_Struct) { + GB_ASSERT(t->Struct.fields.count == 1); + return lb_emit_struct_ev(p, val, 0); + } else if (t->kind == Type_Array) { + GB_ASSERT(t->Array.count == 1); + return lb_emit_array_epi(p, val, 0); + } else { + GB_PANIC("Unknown type of expand_to_tuple"); + } + + } + + GB_ASSERT(is_type_tuple(tv.type)); + // NOTE(bill): Doesn't need to be zero because it will be initialized in the loops + lbValue tuple = lb_addr_get_ptr(p, lb_add_local_generated(p, tv.type, false)); + if (t->kind == Type_Struct) { + for_array(src_index, t->Struct.fields) { + Entity *field = t->Struct.fields[src_index]; + i32 field_index = field->Variable.field_index; + lbValue f = lb_emit_struct_ev(p, val, field_index); + lbValue ep = lb_emit_struct_ep(p, tuple, cast(i32)src_index); + lb_emit_store(p, ep, f); + } + } else if (t->kind == Type_Array) { + // TODO(bill): Clean-up this code + lbValue ap = lb_address_from_load_or_generate_local(p, val); + for (i32 i = 0; i < cast(i32)t->Array.count; i++) { + lbValue f = lb_emit_load(p, lb_emit_array_epi(p, ap, i)); + lbValue ep = lb_emit_struct_ep(p, tuple, i); + lb_emit_store(p, ep, f); + } + } else { + GB_PANIC("Unknown type of expand_to_tuple"); + } + return lb_emit_load(p, tuple); + } + + case BuiltinProc_min: { + Type *t = type_of_expr(expr); + if (ce->args.count == 2) { + return lb_emit_min(p, t, lb_build_expr(p, ce->args[0]), lb_build_expr(p, ce->args[1])); + } else { + lbValue x = lb_build_expr(p, ce->args[0]); + for (isize i = 1; i < ce->args.count; i++) { + x = lb_emit_min(p, t, x, lb_build_expr(p, ce->args[i])); + } + return x; + } + } + + case BuiltinProc_max: { + Type *t = type_of_expr(expr); + if (ce->args.count == 2) { + return lb_emit_max(p, t, lb_build_expr(p, ce->args[0]), lb_build_expr(p, ce->args[1])); + } else { + lbValue x = lb_build_expr(p, ce->args[0]); + for (isize i = 1; i < ce->args.count; i++) { + x = lb_emit_max(p, t, x, lb_build_expr(p, ce->args[i])); + } + return x; + } + } + + case BuiltinProc_abs: { + gbAllocator a = heap_allocator(); + lbValue x = lb_build_expr(p, ce->args[0]); + Type *t = x.type; + if (is_type_unsigned(t)) { + return x; + } + if (is_type_quaternion(t)) { + i64 sz = 8*type_size_of(t); + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = x; + switch (sz) { + case 128: return lb_emit_runtime_call(p, "abs_quaternion128", args); + case 256: return lb_emit_runtime_call(p, "abs_quaternion256", args); + } + GB_PANIC("Unknown complex type"); + } else if (is_type_complex(t)) { + i64 sz = 8*type_size_of(t); + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = x; + switch (sz) { + case 64: return lb_emit_runtime_call(p, "abs_complex64", args); + case 128: return lb_emit_runtime_call(p, "abs_complex128", args); + } + GB_PANIC("Unknown complex type"); + } else if (is_type_float(t)) { + i64 sz = 8*type_size_of(t); + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = x; + switch (sz) { + case 32: return lb_emit_runtime_call(p, "abs_f32", args); + case 64: return lb_emit_runtime_call(p, "abs_f64", args); + } + GB_PANIC("Unknown float type"); + } + lbValue zero = lb_const_nil(p->module, t); + lbValue cond = lb_emit_comp(p, Token_Lt, x, zero); + lbValue neg = lb_emit_unary_arith(p, Token_Sub, x, t); + return lb_emit_select(p, cond, neg, x); + } + + case BuiltinProc_clamp: + return lb_emit_clamp(p, type_of_expr(expr), + lb_build_expr(p, ce->args[0]), + lb_build_expr(p, ce->args[1]), + lb_build_expr(p, ce->args[2])); + + + + // "Intrinsics" + case BuiltinProc_cpu_relax: + // TODO(bill): BuiltinProc_cpu_relax + // ir_write_str_lit(f, "call void asm sideeffect \"pause\", \"\"()"); + return {}; + + case BuiltinProc_atomic_fence: + LLVMBuildFence(p->builder, LLVMAtomicOrderingSequentiallyConsistent, false, ""); + return {}; + case BuiltinProc_atomic_fence_acq: + LLVMBuildFence(p->builder, LLVMAtomicOrderingAcquire, false, ""); + return {}; + case BuiltinProc_atomic_fence_rel: + LLVMBuildFence(p->builder, LLVMAtomicOrderingRelease, false, ""); + return {}; + case BuiltinProc_atomic_fence_acqrel: + LLVMBuildFence(p->builder, LLVMAtomicOrderingAcquireRelease, false, ""); + return {}; + + case BuiltinProc_atomic_store: + case BuiltinProc_atomic_store_rel: + case BuiltinProc_atomic_store_relaxed: + case BuiltinProc_atomic_store_unordered: { + lbValue dst = lb_build_expr(p, ce->args[0]); + lbValue val = lb_build_expr(p, ce->args[1]); + val = lb_emit_conv(p, val, type_deref(dst.type)); + + LLVMValueRef instr = LLVMBuildStore(p->builder, val.value, dst.value); + switch (id) { + case BuiltinProc_atomic_store: LLVMSetOrdering(instr, LLVMAtomicOrderingSequentiallyConsistent); break; + case BuiltinProc_atomic_store_rel: LLVMSetOrdering(instr, LLVMAtomicOrderingRelease); break; + case BuiltinProc_atomic_store_relaxed: LLVMSetOrdering(instr, LLVMAtomicOrderingMonotonic); break; + case BuiltinProc_atomic_store_unordered: LLVMSetOrdering(instr, LLVMAtomicOrderingUnordered); break; + } + + LLVMSetAlignment(instr, cast(unsigned)type_align_of(type_deref(dst.type))); + + return {}; + } + + case BuiltinProc_atomic_load: + case BuiltinProc_atomic_load_acq: + case BuiltinProc_atomic_load_relaxed: + case BuiltinProc_atomic_load_unordered: { + lbValue dst = lb_build_expr(p, ce->args[0]); + + LLVMValueRef instr = LLVMBuildLoad(p->builder, dst.value, ""); + switch (id) { + case BuiltinProc_atomic_load: LLVMSetOrdering(instr, LLVMAtomicOrderingSequentiallyConsistent); break; + case BuiltinProc_atomic_load_acq: LLVMSetOrdering(instr, LLVMAtomicOrderingAcquire); break; + case BuiltinProc_atomic_load_relaxed: LLVMSetOrdering(instr, LLVMAtomicOrderingMonotonic); break; + case BuiltinProc_atomic_load_unordered: LLVMSetOrdering(instr, LLVMAtomicOrderingUnordered); break; + } + LLVMSetAlignment(instr, cast(unsigned)type_align_of(type_deref(dst.type))); + + lbValue res = {}; + res.value = instr; + res.type = type_deref(dst.type); + return res; + } + + case BuiltinProc_atomic_add: + case BuiltinProc_atomic_add_acq: + case BuiltinProc_atomic_add_rel: + case BuiltinProc_atomic_add_acqrel: + case BuiltinProc_atomic_add_relaxed: + case BuiltinProc_atomic_sub: + case BuiltinProc_atomic_sub_acq: + case BuiltinProc_atomic_sub_rel: + case BuiltinProc_atomic_sub_acqrel: + case BuiltinProc_atomic_sub_relaxed: + case BuiltinProc_atomic_and: + case BuiltinProc_atomic_and_acq: + case BuiltinProc_atomic_and_rel: + case BuiltinProc_atomic_and_acqrel: + case BuiltinProc_atomic_and_relaxed: + case BuiltinProc_atomic_nand: + case BuiltinProc_atomic_nand_acq: + case BuiltinProc_atomic_nand_rel: + case BuiltinProc_atomic_nand_acqrel: + case BuiltinProc_atomic_nand_relaxed: + case BuiltinProc_atomic_or: + case BuiltinProc_atomic_or_acq: + case BuiltinProc_atomic_or_rel: + case BuiltinProc_atomic_or_acqrel: + case BuiltinProc_atomic_or_relaxed: + case BuiltinProc_atomic_xor: + case BuiltinProc_atomic_xor_acq: + case BuiltinProc_atomic_xor_rel: + case BuiltinProc_atomic_xor_acqrel: + case BuiltinProc_atomic_xor_relaxed: + case BuiltinProc_atomic_xchg: + case BuiltinProc_atomic_xchg_acq: + case BuiltinProc_atomic_xchg_rel: + case BuiltinProc_atomic_xchg_acqrel: + case BuiltinProc_atomic_xchg_relaxed: { + lbValue dst = lb_build_expr(p, ce->args[0]); + lbValue val = lb_build_expr(p, ce->args[1]); + val = lb_emit_conv(p, val, type_deref(dst.type)); + + LLVMAtomicRMWBinOp op = {}; + LLVMAtomicOrdering ordering = {}; + + switch (id) { + case BuiltinProc_atomic_add: op = LLVMAtomicRMWBinOpAdd; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_add_acq: op = LLVMAtomicRMWBinOpAdd; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_add_rel: op = LLVMAtomicRMWBinOpAdd; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_add_acqrel: op = LLVMAtomicRMWBinOpAdd; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_add_relaxed: op = LLVMAtomicRMWBinOpAdd; ordering = LLVMAtomicOrderingMonotonic; break; + case BuiltinProc_atomic_sub: op = LLVMAtomicRMWBinOpSub; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_sub_acq: op = LLVMAtomicRMWBinOpSub; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_sub_rel: op = LLVMAtomicRMWBinOpSub; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_sub_acqrel: op = LLVMAtomicRMWBinOpSub; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_sub_relaxed: op = LLVMAtomicRMWBinOpSub; ordering = LLVMAtomicOrderingMonotonic; break; + case BuiltinProc_atomic_and: op = LLVMAtomicRMWBinOpAnd; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_and_acq: op = LLVMAtomicRMWBinOpAnd; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_and_rel: op = LLVMAtomicRMWBinOpAnd; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_and_acqrel: op = LLVMAtomicRMWBinOpAnd; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_and_relaxed: op = LLVMAtomicRMWBinOpAnd; ordering = LLVMAtomicOrderingMonotonic; break; + case BuiltinProc_atomic_nand: op = LLVMAtomicRMWBinOpNand; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_nand_acq: op = LLVMAtomicRMWBinOpNand; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_nand_rel: op = LLVMAtomicRMWBinOpNand; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_nand_acqrel: op = LLVMAtomicRMWBinOpNand; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_nand_relaxed: op = LLVMAtomicRMWBinOpNand; ordering = LLVMAtomicOrderingMonotonic; break; + case BuiltinProc_atomic_or: op = LLVMAtomicRMWBinOpOr; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_or_acq: op = LLVMAtomicRMWBinOpOr; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_or_rel: op = LLVMAtomicRMWBinOpOr; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_or_acqrel: op = LLVMAtomicRMWBinOpOr; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_or_relaxed: op = LLVMAtomicRMWBinOpOr; ordering = LLVMAtomicOrderingMonotonic; break; + case BuiltinProc_atomic_xor: op = LLVMAtomicRMWBinOpXor; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_xor_acq: op = LLVMAtomicRMWBinOpXor; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_xor_rel: op = LLVMAtomicRMWBinOpXor; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_xor_acqrel: op = LLVMAtomicRMWBinOpXor; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_xor_relaxed: op = LLVMAtomicRMWBinOpXor; ordering = LLVMAtomicOrderingMonotonic; break; + case BuiltinProc_atomic_xchg: op = LLVMAtomicRMWBinOpXchg; ordering = LLVMAtomicOrderingSequentiallyConsistent; break; + case BuiltinProc_atomic_xchg_acq: op = LLVMAtomicRMWBinOpXchg; ordering = LLVMAtomicOrderingAcquire; break; + case BuiltinProc_atomic_xchg_rel: op = LLVMAtomicRMWBinOpXchg; ordering = LLVMAtomicOrderingRelease; break; + case BuiltinProc_atomic_xchg_acqrel: op = LLVMAtomicRMWBinOpXchg; ordering = LLVMAtomicOrderingAcquireRelease; break; + case BuiltinProc_atomic_xchg_relaxed: op = LLVMAtomicRMWBinOpXchg; ordering = LLVMAtomicOrderingMonotonic; break; + } + + LLVMValueRef instr = LLVMBuildAtomicRMW(p->builder, op, dst.value, val.value, ordering, false); + return {}; + } + + case BuiltinProc_atomic_cxchg: + case BuiltinProc_atomic_cxchg_acq: + case BuiltinProc_atomic_cxchg_rel: + case BuiltinProc_atomic_cxchg_acqrel: + case BuiltinProc_atomic_cxchg_relaxed: + case BuiltinProc_atomic_cxchg_failrelaxed: + case BuiltinProc_atomic_cxchg_failacq: + case BuiltinProc_atomic_cxchg_acq_failrelaxed: + case BuiltinProc_atomic_cxchg_acqrel_failrelaxed: + case BuiltinProc_atomic_cxchgweak: + case BuiltinProc_atomic_cxchgweak_acq: + case BuiltinProc_atomic_cxchgweak_rel: + case BuiltinProc_atomic_cxchgweak_acqrel: + case BuiltinProc_atomic_cxchgweak_relaxed: + case BuiltinProc_atomic_cxchgweak_failrelaxed: + case BuiltinProc_atomic_cxchgweak_failacq: + case BuiltinProc_atomic_cxchgweak_acq_failrelaxed: + case BuiltinProc_atomic_cxchgweak_acqrel_failrelaxed: { + Type *type = expr->tav.type; + + lbValue address = lb_build_expr(p, ce->args[0]); + Type *elem = type_deref(address.type); + lbValue old_value = lb_build_expr(p, ce->args[1]); + lbValue new_value = lb_build_expr(p, ce->args[2]); + old_value = lb_emit_conv(p, old_value, elem); + new_value = lb_emit_conv(p, new_value, elem); + + LLVMAtomicOrdering success_ordering = {}; + LLVMAtomicOrdering failure_ordering = {}; + LLVMBool weak = false; + + switch (id) { + case BuiltinProc_atomic_cxchg: success_ordering = LLVMAtomicOrderingSequentiallyConsistent; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = false; break; + case BuiltinProc_atomic_cxchg_acq: success_ordering = LLVMAtomicOrderingAcquire; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = false; break; + case BuiltinProc_atomic_cxchg_rel: success_ordering = LLVMAtomicOrderingRelease; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = false; break; + case BuiltinProc_atomic_cxchg_acqrel: success_ordering = LLVMAtomicOrderingAcquireRelease; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = false; break; + case BuiltinProc_atomic_cxchg_relaxed: success_ordering = LLVMAtomicOrderingMonotonic; failure_ordering = LLVMAtomicOrderingMonotonic; weak = false; break; + case BuiltinProc_atomic_cxchg_failrelaxed: success_ordering = LLVMAtomicOrderingSequentiallyConsistent; failure_ordering = LLVMAtomicOrderingMonotonic; weak = false; break; + case BuiltinProc_atomic_cxchg_failacq: success_ordering = LLVMAtomicOrderingSequentiallyConsistent; failure_ordering = LLVMAtomicOrderingAcquire; weak = false; break; + case BuiltinProc_atomic_cxchg_acq_failrelaxed: success_ordering = LLVMAtomicOrderingAcquire; failure_ordering = LLVMAtomicOrderingMonotonic; weak = false; break; + case BuiltinProc_atomic_cxchg_acqrel_failrelaxed: success_ordering = LLVMAtomicOrderingAcquireRelease; failure_ordering = LLVMAtomicOrderingMonotonic; weak = false; break; + case BuiltinProc_atomic_cxchgweak: success_ordering = LLVMAtomicOrderingSequentiallyConsistent; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = false; break; + case BuiltinProc_atomic_cxchgweak_acq: success_ordering = LLVMAtomicOrderingAcquire; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = true; break; + case BuiltinProc_atomic_cxchgweak_rel: success_ordering = LLVMAtomicOrderingRelease; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = true; break; + case BuiltinProc_atomic_cxchgweak_acqrel: success_ordering = LLVMAtomicOrderingAcquireRelease; failure_ordering = LLVMAtomicOrderingSequentiallyConsistent; weak = true; break; + case BuiltinProc_atomic_cxchgweak_relaxed: success_ordering = LLVMAtomicOrderingMonotonic; failure_ordering = LLVMAtomicOrderingMonotonic; weak = true; break; + case BuiltinProc_atomic_cxchgweak_failrelaxed: success_ordering = LLVMAtomicOrderingSequentiallyConsistent; failure_ordering = LLVMAtomicOrderingMonotonic; weak = true; break; + case BuiltinProc_atomic_cxchgweak_failacq: success_ordering = LLVMAtomicOrderingSequentiallyConsistent; failure_ordering = LLVMAtomicOrderingAcquire; weak = true; break; + case BuiltinProc_atomic_cxchgweak_acq_failrelaxed: success_ordering = LLVMAtomicOrderingAcquire; failure_ordering = LLVMAtomicOrderingMonotonic; weak = true; break; + case BuiltinProc_atomic_cxchgweak_acqrel_failrelaxed: success_ordering = LLVMAtomicOrderingAcquireRelease; failure_ordering = LLVMAtomicOrderingMonotonic; weak = true; break; + } + + // TODO(bill): Figure out how to make it weak + LLVMBool single_threaded = !weak; + + LLVMValueRef instr = LLVMBuildAtomicCmpXchg(p->builder, address.value, + old_value.value, new_value.value, + success_ordering, + failure_ordering, + single_threaded); + + return {}; + } + } + + GB_PANIC("Unhandled built-in procedure %.*s", LIT(builtin_procs[id].name)); + return {}; +} + + +lbValue lb_build_call_expr(lbProcedure *p, Ast *expr) { + lbModule *m = p->module; + + TypeAndValue tv = type_and_value_of_expr(expr); + + ast_node(ce, CallExpr, expr); + + TypeAndValue proc_tv = type_and_value_of_expr(ce->proc); + AddressingMode proc_mode = proc_tv.mode; + if (proc_mode == Addressing_Type) { + GB_ASSERT(ce->args.count == 1); + lbValue x = lb_build_expr(p, ce->args[0]); + lbValue y = lb_emit_conv(p, x, tv.type); + return y; + } + + Ast *pexpr = unparen_expr(ce->proc); + if (proc_mode == Addressing_Builtin) { + Entity *e = entity_of_node(pexpr); + BuiltinProcId id = BuiltinProc_Invalid; + if (e != nullptr) { + id = cast(BuiltinProcId)e->Builtin.id; + } else { + id = BuiltinProc_DIRECTIVE; + } + return lb_build_builtin_proc(p, expr, tv, id); + } + + // NOTE(bill): Regular call + lbValue value = {}; + Ast *proc_expr = unparen_expr(ce->proc); + if (proc_expr->tav.mode == Addressing_Constant) { + ExactValue v = proc_expr->tav.value; + switch (v.kind) { + case ExactValue_Integer: + { + u64 u = big_int_to_u64(&v.value_integer); + lbValue x = {}; + x.value = LLVMConstInt(lb_type(m, t_uintptr), u, false); + x.type = t_uintptr; + x = lb_emit_conv(p, x, t_rawptr); + value = lb_emit_conv(p, x, proc_expr->tav.type); + break; + } + case ExactValue_Pointer: + { + u64 u = cast(u64)v.value_pointer; + lbValue x = {}; + x.value = LLVMConstInt(lb_type(m, t_uintptr), u, false); + x.type = t_uintptr; + x = lb_emit_conv(p, x, t_rawptr); + value = lb_emit_conv(p, x, proc_expr->tav.type); + break; + } + } + } + + if (value.value == nullptr) { + value = lb_build_expr(p, proc_expr); + } + + GB_ASSERT(value.value != nullptr); + Type *proc_type_ = base_type(value.type); + GB_ASSERT(proc_type_->kind == Type_Proc); + TypeProc *pt = &proc_type_->Proc; + set_procedure_abi_types(heap_allocator(), proc_type_); + + if (is_call_expr_field_value(ce)) { + auto args = array_make<lbValue>(heap_allocator(), pt->param_count); + + for_array(arg_index, ce->args) { + Ast *arg = ce->args[arg_index]; + ast_node(fv, FieldValue, arg); + GB_ASSERT(fv->field->kind == Ast_Ident); + String name = fv->field->Ident.token.string; + isize index = lookup_procedure_parameter(pt, name); + GB_ASSERT(index >= 0); + TypeAndValue tav = type_and_value_of_expr(fv->value); + if (tav.mode == Addressing_Type) { + args[index] = lb_const_nil(m, tav.type); + } else { + args[index] = lb_build_expr(p, fv->value); + } + } + TypeTuple *params = &pt->params->Tuple; + for (isize i = 0; i < args.count; i++) { + Entity *e = params->variables[i]; + if (e->kind == Entity_TypeName) { + args[i] = lb_const_nil(m, e->type); + } else if (e->kind == Entity_Constant) { + continue; + } else { + GB_ASSERT(e->kind == Entity_Variable); + if (args[i].value == nullptr) { + switch (e->Variable.param_value.kind) { + case ParameterValue_Constant: + args[i] = lb_const_value(p->module, e->type, e->Variable.param_value.value); + break; + case ParameterValue_Nil: + args[i] = lb_const_nil(m, e->type); + break; + case ParameterValue_Location: + args[i] = lb_emit_source_code_location(p, p->entity->token.string, ast_token(expr).pos); + break; + case ParameterValue_Value: + args[i] = lb_build_expr(p, e->Variable.param_value.ast_value); + break; + } + } else { + args[i] = lb_emit_conv(p, args[i], e->type); + } + } + } + + for (isize i = 0; i < args.count; i++) { + Entity *e = params->variables[i]; + if (args[i].type == nullptr) { + continue; + } else if (is_type_untyped_nil(args[i].type)) { + args[i] = lb_const_nil(m, e->type); + } else if (is_type_untyped_undef(args[i].type)) { + args[i] = lb_const_undef(m, e->type); + } + } + + return lb_emit_call(p, value, args, ce->inlining, p->return_ptr_hint_ast == expr); + } + + isize arg_index = 0; + + isize arg_count = 0; + for_array(i, ce->args) { + Ast *arg = ce->args[i]; + TypeAndValue tav = type_and_value_of_expr(arg); + GB_ASSERT_MSG(tav.mode != Addressing_Invalid, "%s %s", expr_to_string(arg), expr_to_string(expr)); + GB_ASSERT_MSG(tav.mode != Addressing_ProcGroup, "%s", expr_to_string(arg)); + Type *at = tav.type; + if (at->kind == Type_Tuple) { + arg_count += at->Tuple.variables.count; + } else { + arg_count++; + } + } + + isize param_count = 0; + if (pt->params) { + GB_ASSERT(pt->params->kind == Type_Tuple); + param_count = pt->params->Tuple.variables.count; + } + + auto args = array_make<lbValue>(heap_allocator(), cast(isize)gb_max(param_count, arg_count)); + isize variadic_index = pt->variadic_index; + bool variadic = pt->variadic && variadic_index >= 0; + bool vari_expand = ce->ellipsis.pos.line != 0; + bool is_c_vararg = pt->c_vararg; + + String proc_name = {}; + if (p->entity != nullptr) { + proc_name = p->entity->token.string; + } + TokenPos pos = ast_token(ce->proc).pos; + + TypeTuple *param_tuple = nullptr; + if (pt->params) { + GB_ASSERT(pt->params->kind == Type_Tuple); + param_tuple = &pt->params->Tuple; + } + + for_array(i, ce->args) { + Ast *arg = ce->args[i]; + TypeAndValue arg_tv = type_and_value_of_expr(arg); + if (arg_tv.mode == Addressing_Type) { + args[arg_index++] = lb_const_nil(m, arg_tv.type); + } else { + lbValue a = lb_build_expr(p, arg); + Type *at = a.type; + if (at->kind == Type_Tuple) { + for_array(i, at->Tuple.variables) { + Entity *e = at->Tuple.variables[i]; + lbValue v = lb_emit_struct_ev(p, a, cast(i32)i); + args[arg_index++] = v; + } + } else { + args[arg_index++] = a; + } + } + } + + + if (param_count > 0) { + GB_ASSERT_MSG(pt->params != nullptr, "%s %td", expr_to_string(expr), pt->param_count); + GB_ASSERT(param_count < 1000000); + + if (arg_count < param_count) { + isize end = cast(isize)param_count; + if (variadic) { + end = variadic_index; + } + while (arg_index < end) { + Entity *e = param_tuple->variables[arg_index]; + GB_ASSERT(e->kind == Entity_Variable); + + switch (e->Variable.param_value.kind) { + case ParameterValue_Constant: + args[arg_index++] = lb_const_value(p->module, e->type, e->Variable.param_value.value); + break; + case ParameterValue_Nil: + args[arg_index++] = lb_const_nil(m, e->type); + break; + case ParameterValue_Location: + args[arg_index++] = lb_emit_source_code_location(p, proc_name, pos); + break; + case ParameterValue_Value: + args[arg_index++] = lb_build_expr(p, e->Variable.param_value.ast_value); + break; + } + } + } + + if (is_c_vararg) { + GB_ASSERT(variadic); + GB_ASSERT(!vari_expand); + isize i = 0; + for (; i < variadic_index; i++) { + Entity *e = param_tuple->variables[i]; + if (e->kind == Entity_Variable) { + args[i] = lb_emit_conv(p, args[i], e->type); + } + } + Type *variadic_type = param_tuple->variables[i]->type; + GB_ASSERT(is_type_slice(variadic_type)); + variadic_type = base_type(variadic_type)->Slice.elem; + if (!is_type_any(variadic_type)) { + for (; i < arg_count; i++) { + args[i] = lb_emit_conv(p, args[i], variadic_type); + } + } else { + for (; i < arg_count; i++) { + args[i] = lb_emit_conv(p, args[i], default_type(args[i].type)); + } + } + } else if (variadic) { + isize i = 0; + for (; i < variadic_index; i++) { + Entity *e = param_tuple->variables[i]; + if (e->kind == Entity_Variable) { + args[i] = lb_emit_conv(p, args[i], e->type); + } + } + if (!vari_expand) { + Type *variadic_type = param_tuple->variables[i]->type; + GB_ASSERT(is_type_slice(variadic_type)); + variadic_type = base_type(variadic_type)->Slice.elem; + for (; i < arg_count; i++) { + args[i] = lb_emit_conv(p, args[i], variadic_type); + } + } + } else { + for (isize i = 0; i < param_count; i++) { + Entity *e = param_tuple->variables[i]; + if (e->kind == Entity_Variable) { + if (args[i].value == nullptr) { + continue; + } + GB_ASSERT_MSG(args[i].value != nullptr, "%.*s", LIT(e->token.string)); + args[i] = lb_emit_conv(p, args[i], e->type); + } + } + } + + if (variadic && !vari_expand && !is_c_vararg) { + // variadic call argument generation + gbAllocator allocator = heap_allocator(); + Type *slice_type = param_tuple->variables[variadic_index]->type; + Type *elem_type = base_type(slice_type)->Slice.elem; + lbAddr slice = lb_add_local_generated(p, slice_type, true); + isize slice_len = arg_count+1 - (variadic_index+1); + + if (slice_len > 0) { + lbAddr base_array = lb_add_local_generated(p, alloc_type_array(elem_type, slice_len), true); + + for (isize i = variadic_index, j = 0; i < arg_count; i++, j++) { + lbValue addr = lb_emit_array_epi(p, base_array.addr, cast(i32)j); + lb_emit_store(p, addr, args[i]); + } + + lbValue base_elem = lb_emit_array_epi(p, base_array.addr, 0); + lbValue len = lb_const_int(m, t_int, slice_len); + lb_fill_slice(p, slice, base_elem, len); + } + + arg_count = param_count; + args[variadic_index] = lb_addr_load(p, slice); + } + } + + if (variadic && variadic_index+1 < param_count) { + for (isize i = variadic_index+1; i < param_count; i++) { + Entity *e = param_tuple->variables[i]; + switch (e->Variable.param_value.kind) { + case ParameterValue_Constant: + args[i] = lb_const_value(p->module, e->type, e->Variable.param_value.value); + break; + case ParameterValue_Nil: + args[i] = lb_const_nil(m, e->type); + break; + case ParameterValue_Location: + args[i] = lb_emit_source_code_location(p, proc_name, pos); + break; + case ParameterValue_Value: + args[i] = lb_build_expr(p, e->Variable.param_value.ast_value); + break; + } + } + } + + isize final_count = param_count; + if (is_c_vararg) { + final_count = arg_count; + } + + if (param_tuple != nullptr) { + for (isize i = 0; i < gb_min(args.count, param_tuple->variables.count); i++) { + Entity *e = param_tuple->variables[i]; + if (args[i].type == nullptr) { + continue; + } else if (is_type_untyped_nil(args[i].type)) { + args[i] = lb_const_nil(m, e->type); + } else if (is_type_untyped_undef(args[i].type)) { + args[i] = lb_const_undef(m, e->type); + } + } + } + + auto call_args = array_slice(args, 0, final_count); + return lb_emit_call(p, value, call_args, ce->inlining, p->return_ptr_hint_ast == expr); +} + +bool lb_is_const(lbValue value) { + LLVMValueRef v = value.value; + if (is_type_untyped_nil(value.type) || is_type_untyped_undef(value.type)) { + // TODO(bill): Is this correct behaviour? + return true; + } + if (LLVMIsConstant(v)) { + return true; + } + return false; +} +bool lb_is_const_nil(lbValue value) { + LLVMValueRef v = value.value; + if (LLVMIsConstant(v)) { + if (LLVMIsAConstantAggregateZero(v)) { + return true; + } else if (LLVMIsAConstantPointerNull(v)) { + return true; + } + } + return false; +} + +String lb_get_const_string(lbModule *m, lbValue value) { + GB_ASSERT(lb_is_const(value)); + + Type *t = base_type(value.type); + GB_ASSERT(are_types_identical(t, t_string)); + + + + unsigned ptr_indices[1] = {0}; + unsigned len_indices[1] = {1}; + LLVMValueRef underlying_ptr = LLVMConstExtractValue(value.value, ptr_indices, gb_count_of(ptr_indices)); + LLVMValueRef underlying_len = LLVMConstExtractValue(value.value, len_indices, gb_count_of(len_indices)); + + GB_ASSERT(LLVMGetConstOpcode(underlying_ptr) == LLVMGetElementPtr); + underlying_ptr = LLVMGetOperand(underlying_ptr, 0); + GB_ASSERT(LLVMIsAGlobalVariable(underlying_ptr)); + underlying_ptr = LLVMGetInitializer(underlying_ptr); + + size_t length = 0; + char const *text = LLVMGetAsString(underlying_ptr, &length); + + isize real_length = cast(isize)LLVMConstIntGetSExtValue(underlying_len); + + return make_string(cast(u8 const *)text, real_length); +} + + +void lb_emit_increment(lbProcedure *p, lbValue addr) { + GB_ASSERT(is_type_pointer(addr.type)); + Type *type = type_deref(addr.type); + lbValue v_one = lb_const_value(p->module, type, exact_value_i64(1)); + lb_emit_store(p, addr, lb_emit_arith(p, Token_Add, lb_emit_load(p, addr), v_one, type)); + +} + +lbValue lb_emit_byte_swap(lbProcedure *p, lbValue value, Type *platform_type) { + Type *vt = core_type(value.type); + GB_ASSERT(type_size_of(vt) == type_size_of(platform_type)); + GB_ASSERT(is_type_integer(vt)); + + // TODO(bill): lb_emit_byte_swap + lbValue res = {}; + res.type = platform_type; + res.value = value.value; + + // int sz = cast(int)type_size_of(vt); + // if (sz > 1) { + // char buf[32] = {}; + // gb_snprintf(buf, gb_count_of(buf), "llvm.bswap.i%d", sz*8); + // unsigned id = LLVMLookupIntrinsicID(buf, gb_strlen(buf)); + // gb_printf(">>> %s %u\n", buf, id); + + // LLVMTypeRef types[2] = {}; + // types[0] = lb_type(p->module, value.type); + // types[1] = lb_type(p->module, value.type); + + // LLVMValueRef fn = LLVMGetIntrinsicDeclaration(p->module->mod, id, types, gb_count_of(types)); + + // res.value = LLVMBuildCall(p->builder, fn, &value.value, 1, ""); + // } + + return res; +} + + +lbLoopData lb_loop_start(lbProcedure *p, isize count, Type *index_type) { + lbLoopData data = {}; + + lbValue max = lb_const_int(p->module, t_int, count); + + data.idx_addr = lb_add_local_generated(p, index_type, true); + + data.body = lb_create_block(p, "loop.body"); + data.done = lb_create_block(p, "loop.done"); + data.loop = lb_create_block(p, "loop.loop"); + + lb_emit_jump(p, data.loop); + lb_start_block(p, data.loop); + + data.idx = lb_addr_load(p, data.idx_addr); + + lbValue cond = lb_emit_comp(p, Token_Lt, data.idx, max); + lb_emit_if(p, cond, data.body, data.done); + lb_start_block(p, data.body); + + return data; +} + +void lb_loop_end(lbProcedure *p, lbLoopData const &data) { + if (data.idx_addr.addr.value != nullptr) { + lb_emit_increment(p, data.idx_addr.addr); + lb_emit_jump(p, data.loop); + lb_start_block(p, data.done); + } +} + +lbValue lb_emit_comp_against_nil(lbProcedure *p, TokenKind op_kind, lbValue x) { + lbValue res = {}; + res.type = t_llvm_bool; + Type *t = x.type; + if (is_type_pointer(t)) { + if (op_kind == Token_CmpEq) { + res.value = LLVMBuildIsNull(p->builder, x.value, ""); + } else if (op_kind == Token_NotEq) { + res.value = LLVMBuildIsNotNull(p->builder, x.value, ""); + } + return res; + } else if (is_type_cstring(t)) { + lbValue ptr = lb_emit_conv(p, x, t_u8_ptr); + if (op_kind == Token_CmpEq) { + res.value = LLVMBuildIsNull(p->builder, ptr.value, ""); + } else if (op_kind == Token_NotEq) { + res.value = LLVMBuildIsNotNull(p->builder, ptr.value, ""); + } + return res; + } else if (is_type_any(t)) { + lbValue data = lb_emit_struct_ev(p, x, 0); + lbValue ti = lb_emit_struct_ev(p, x, 1); + if (op_kind == Token_CmpEq) { + LLVMValueRef a = LLVMBuildIsNull(p->builder, data.value, ""); + LLVMValueRef b = LLVMBuildIsNull(p->builder, ti.value, ""); + res.value = LLVMBuildOr(p->builder, a, b, ""); + return res; + } else if (op_kind == Token_NotEq) { + LLVMValueRef a = LLVMBuildIsNotNull(p->builder, data.value, ""); + LLVMValueRef b = LLVMBuildIsNotNull(p->builder, ti.value, ""); + res.value = LLVMBuildAnd(p->builder, a, b, ""); + return res; + } + } else if (is_type_slice(t)) { + lbValue data = lb_emit_struct_ev(p, x, 0); + lbValue cap = lb_emit_struct_ev(p, x, 1); + if (op_kind == Token_CmpEq) { + LLVMValueRef a = LLVMBuildIsNull(p->builder, data.value, ""); + LLVMValueRef b = LLVMBuildIsNull(p->builder, cap.value, ""); + res.value = LLVMBuildOr(p->builder, a, b, ""); + return res; + } else if (op_kind == Token_NotEq) { + LLVMValueRef a = LLVMBuildIsNotNull(p->builder, data.value, ""); + LLVMValueRef b = LLVMBuildIsNotNull(p->builder, cap.value, ""); + res.value = LLVMBuildAnd(p->builder, a, b, ""); + return res; + } + } else if (is_type_dynamic_array(t)) { + lbValue data = lb_emit_struct_ev(p, x, 0); + lbValue cap = lb_emit_struct_ev(p, x, 2); + if (op_kind == Token_CmpEq) { + LLVMValueRef a = LLVMBuildIsNull(p->builder, data.value, ""); + LLVMValueRef b = LLVMBuildIsNull(p->builder, cap.value, ""); + res.value = LLVMBuildOr(p->builder, a, b, ""); + return res; + } else if (op_kind == Token_NotEq) { + LLVMValueRef a = LLVMBuildIsNotNull(p->builder, data.value, ""); + LLVMValueRef b = LLVMBuildIsNotNull(p->builder, cap.value, ""); + res.value = LLVMBuildAnd(p->builder, a, b, ""); + return res; + } + } else if (is_type_map(t)) { + lbValue cap = lb_map_cap(p, x); + return lb_emit_comp(p, op_kind, cap, lb_zero(p->module, cap.type)); + } else if (is_type_union(t)) { + if (type_size_of(t) == 0) { + if (op_kind == Token_CmpEq) { + return lb_const_bool(p->module, t_llvm_bool, true); + } else if (op_kind == Token_NotEq) { + return lb_const_bool(p->module, t_llvm_bool, false); + } + } else { + lbValue tag = lb_emit_union_tag_value(p, x); + return lb_emit_comp(p, op_kind, tag, lb_zero(p->module, tag.type)); + } + } else if (is_type_typeid(t)) { + lbValue invalid_typeid = lb_const_value(p->module, t_typeid, exact_value_i64(0)); + return lb_emit_comp(p, op_kind, x, invalid_typeid); + } else if (is_type_bit_field(t)) { + auto args = array_make<lbValue>(heap_allocator(), 2); + lbValue lhs = lb_address_from_load_or_generate_local(p, x); + args[0] = lb_emit_conv(p, lhs, t_rawptr); + args[1] = lb_const_int(p->module, t_int, type_size_of(t)); + lbValue val = lb_emit_runtime_call(p, "memory_compare_zero", args); + lbValue res = lb_emit_comp(p, op_kind, val, lb_const_int(p->module, t_int, 0)); + return res; + } else if (is_type_soa_struct(t)) { + GB_PANIC("#soa struct nil comparison"); + // Type *bt = base_type(t); + // if (bt->Struct.soa_kind == StructSoa_Slice) { + // lbValue len = lb_soa_struct_len(p, x); + // if (bt->Struct.fields.count > 1) { + // lbValue data = lb_emit_struct_ev(p, x, 0); + // if (op_kind == Token_CmpEq) { + // lbValue a = lb_emit_comp(p, Token_CmpEq, data, v_raw_nil); + // lbValue b = lb_emit_comp(p, Token_CmpEq, len, v_zero); + // return lb_emit_arith(p, Token_Or, a, b, t_bool); + // } else if (op_kind == Token_NotEq) { + // lbValue a = lb_emit_comp(p, Token_NotEq, data, v_raw_nil); + // lbValue b = lb_emit_comp(p, Token_NotEq, len, v_zero); + // return lb_emit_arith(p, Token_And, a, b, t_bool); + // } + // } else { + // return lb_emit_comp(p, op_kind, len, v_zero); + // } + // } else if (bt->Struct.soa_kind == StructSoa_Dynamic) { + // lbValue cap = lb_soa_struct_len(p, x); + // if (bt->Struct.fields.count > 1) { + // lbValue data = lb_emit_struct_ev(p, x, 0); + // if (op_kind == Token_CmpEq) { + // lbValue a = lb_emit_comp(p, Token_CmpEq, data, v_raw_nil); + // lbValue b = lb_emit_comp(p, Token_CmpEq, cap, v_zero); + // return lb_emit_arith(p, Token_Or, a, b, t_bool); + // } else if (op_kind == Token_NotEq) { + // lbValue a = lb_emit_comp(p, Token_NotEq, data, v_raw_nil); + // lbValue b = lb_emit_comp(p, Token_NotEq, cap, v_zero); + // return lb_emit_arith(p, Token_And, a, b, t_bool); + // } + // } else { + // return lb_emit_comp(p, op_kind, cap, v_zero); + // } + // } + } + return {}; +} + + +lbValue lb_emit_comp(lbProcedure *p, TokenKind op_kind, lbValue left, lbValue right) { + Type *a = base_type(left.type); + Type *b = base_type(right.type); + + GB_ASSERT(gb_is_between(op_kind, Token__ComparisonBegin+1, Token__ComparisonEnd-1)); + + lbValue nil_check = {}; + if (is_type_untyped_nil(left.type)) { + nil_check = lb_emit_comp_against_nil(p, op_kind, right); + } else if (is_type_untyped_nil(right.type)) { + nil_check = lb_emit_comp_against_nil(p, op_kind, left); + } + if (nil_check.value != nullptr) { + return nil_check; + } + + if (are_types_identical(a, b)) { + // NOTE(bill): No need for a conversion + } else if (lb_is_const(left) || lb_is_const_nil(left)) { + left = lb_emit_conv(p, left, right.type); + } else if (lb_is_const(right) || lb_is_const_nil(right)) { + right = lb_emit_conv(p, right, left.type); + } else { + gbAllocator a = heap_allocator(); + + Type *lt = left.type; + Type *rt = right.type; + + if (is_type_bit_set(lt) && is_type_bit_set(rt)) { + Type *blt = base_type(lt); + Type *brt = base_type(rt); + GB_ASSERT(is_type_bit_field_value(blt)); + GB_ASSERT(is_type_bit_field_value(brt)); + i64 bits = gb_max(blt->BitFieldValue.bits, brt->BitFieldValue.bits); + i64 bytes = bits / 8; + switch (bytes) { + case 1: + left = lb_emit_conv(p, left, t_u8); + right = lb_emit_conv(p, right, t_u8); + break; + case 2: + left = lb_emit_conv(p, left, t_u16); + right = lb_emit_conv(p, right, t_u16); + break; + case 4: + left = lb_emit_conv(p, left, t_u32); + right = lb_emit_conv(p, right, t_u32); + break; + case 8: + left = lb_emit_conv(p, left, t_u64); + right = lb_emit_conv(p, right, t_u64); + break; + default: GB_PANIC("Unknown integer size"); break; + } + } + + lt = left.type; + rt = right.type; + i64 ls = type_size_of(lt); + i64 rs = type_size_of(rt); + if (ls < rs) { + left = lb_emit_conv(p, left, rt); + } else if (ls > rs) { + right = lb_emit_conv(p, right, lt); + } else { + right = lb_emit_conv(p, right, lt); + } + } + + if (is_type_array(a)) { + Type *tl = base_type(a); + lbValue lhs = lb_address_from_load_or_generate_local(p, left); + lbValue rhs = lb_address_from_load_or_generate_local(p, right); + + + TokenKind cmp_op = Token_And; + lbValue res = lb_const_bool(p->module, t_llvm_bool, true); + if (op_kind == Token_NotEq) { + res = lb_const_bool(p->module, t_llvm_bool, false); + cmp_op = Token_Or; + } else if (op_kind == Token_CmpEq) { + res = lb_const_bool(p->module, t_llvm_bool, true); + cmp_op = Token_And; + } + + bool inline_array_arith = type_size_of(tl) <= build_context.max_align; + i32 count = cast(i32)tl->Array.count; + + if (inline_array_arith) { + // inline + lbAddr val = lb_add_local_generated(p, t_bool, false); + lb_addr_store(p, val, res); + for (i32 i = 0; i < count; i++) { + lbValue x = lb_emit_load(p, lb_emit_array_epi(p, lhs, i)); + lbValue y = lb_emit_load(p, lb_emit_array_epi(p, rhs, i)); + lbValue cmp = lb_emit_comp(p, op_kind, x, y); + lbValue new_res = lb_emit_arith(p, cmp_op, lb_addr_load(p, val), cmp, t_bool); + lb_addr_store(p, val, lb_emit_conv(p, new_res, t_bool)); + } + + return lb_addr_load(p, val); + } else { + if (is_type_simple_compare(tl) && (op_kind == Token_CmpEq || op_kind == Token_NotEq)) { + // TODO(bill): Test to see if this is actually faster!!!! + auto args = array_make<lbValue>(heap_allocator(), 3); + args[0] = lb_emit_conv(p, lhs, t_rawptr); + args[1] = lb_emit_conv(p, rhs, t_rawptr); + args[2] = lb_const_int(p->module, t_int, type_size_of(tl)); + lbValue val = lb_emit_runtime_call(p, "memory_compare", args); + lbValue res = lb_emit_comp(p, op_kind, val, lb_const_nil(p->module, val.type)); + return lb_emit_conv(p, res, t_bool); + } else { + lbAddr val = lb_add_local_generated(p, t_bool, false); + lb_addr_store(p, val, res); + auto loop_data = lb_loop_start(p, count, t_i32); + { + lbValue i = loop_data.idx; + lbValue x = lb_emit_load(p, lb_emit_array_ep(p, lhs, i)); + lbValue y = lb_emit_load(p, lb_emit_array_ep(p, rhs, i)); + lbValue cmp = lb_emit_comp(p, op_kind, x, y); + lbValue new_res = lb_emit_arith(p, cmp_op, lb_addr_load(p, val), cmp, t_bool); + lb_addr_store(p, val, lb_emit_conv(p, new_res, t_bool)); + } + lb_loop_end(p, loop_data); + + return lb_addr_load(p, val); + } + } + } + + if (is_type_string(a)) { + if (is_type_cstring(a)) { + left = lb_emit_conv(p, left, t_string); + right = lb_emit_conv(p, right, t_string); + } + + char const *runtime_procedure = nullptr; + switch (op_kind) { + case Token_CmpEq: runtime_procedure = "string_eq"; break; + case Token_NotEq: runtime_procedure = "string_ne"; break; + case Token_Lt: runtime_procedure = "string_lt"; break; + case Token_Gt: runtime_procedure = "string_gt"; break; + case Token_LtEq: runtime_procedure = "string_le"; break; + case Token_GtEq: runtime_procedure = "string_gt"; break; + } + GB_ASSERT(runtime_procedure != nullptr); + + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = left; + args[1] = right; + return lb_emit_runtime_call(p, runtime_procedure, args); + } + + if (is_type_complex(a)) { + char const *runtime_procedure = ""; + i64 sz = 8*type_size_of(a); + switch (sz) { + case 64: + switch (op_kind) { + case Token_CmpEq: runtime_procedure = "complex64_eq"; break; + case Token_NotEq: runtime_procedure = "complex64_ne"; break; + } + break; + case 128: + switch (op_kind) { + case Token_CmpEq: runtime_procedure = "complex128_eq"; break; + case Token_NotEq: runtime_procedure = "complex128_ne"; break; + } + break; + } + GB_ASSERT(runtime_procedure != nullptr); + + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = left; + args[1] = right; + return lb_emit_runtime_call(p, runtime_procedure, args); + } + + if (is_type_quaternion(a)) { + char const *runtime_procedure = ""; + i64 sz = 8*type_size_of(a); + switch (sz) { + case 128: + switch (op_kind) { + case Token_CmpEq: runtime_procedure = "quaternion128_eq"; break; + case Token_NotEq: runtime_procedure = "quaternion128_ne"; break; + } + break; + case 256: + switch (op_kind) { + case Token_CmpEq: runtime_procedure = "quaternion256_eq"; break; + case Token_NotEq: runtime_procedure = "quaternion256_ne"; break; + } + break; + } + GB_ASSERT(runtime_procedure != nullptr); + + auto args = array_make<lbValue>(heap_allocator(), 2); + args[0] = left; + args[1] = right; + return lb_emit_runtime_call(p, runtime_procedure, args); + } + + if (is_type_bit_set(a)) { + switch (op_kind) { + case Token_Lt: + case Token_LtEq: + case Token_Gt: + case Token_GtEq: + { + Type *it = bit_set_to_int(a); + lbValue lhs = lb_emit_transmute(p, left, it); + lbValue rhs = lb_emit_transmute(p, right, it); + lbValue res = lb_emit_arith(p, Token_And, lhs, rhs, it); + + if (op_kind == Token_Lt || op_kind == Token_LtEq) { + // (lhs & rhs) == lhs + res.value = LLVMBuildICmp(p->builder, LLVMIntEQ, res.value, lhs.value, ""); + res.type = t_llvm_bool; + } else if (op_kind == Token_Gt || op_kind == Token_GtEq) { + // (lhs & rhs) == rhs + res.value = LLVMBuildICmp(p->builder, LLVMIntEQ, res.value, rhs.value, ""); + res.type = t_llvm_bool; + } + + // NOTE(bill): Strict subsets + if (op_kind == Token_Lt || op_kind == Token_Gt) { + // res &~ (lhs == rhs) + lbValue eq = {}; + eq.value = LLVMBuildICmp(p->builder, LLVMIntEQ, lhs.value, rhs.value, ""); + eq.type = t_llvm_bool; + res = lb_emit_arith(p, Token_AndNot, res, eq, t_llvm_bool); + } + + return res; + } + + case Token_CmpEq: + case Token_NotEq: + { + LLVMIntPredicate pred = {}; + switch (op_kind) { + case Token_CmpEq: pred = LLVMIntEQ; break; + case Token_NotEq: pred = LLVMIntNE; break; + } + lbValue res = {}; + res.type = t_llvm_bool; + res.value = LLVMBuildICmp(p->builder, pred, left.value, right.value, ""); + return res; + } + } + } + + if (op_kind != Token_CmpEq && op_kind != Token_NotEq) { + Type *t = left.type; + if (is_type_integer(t) && is_type_different_to_arch_endianness(t)) { + Type *platform_type = integer_endian_type_to_platform_type(t); + lbValue x = lb_emit_byte_swap(p, left, platform_type); + lbValue y = lb_emit_byte_swap(p, right, platform_type); + left = x; + right = y; + } + } + + + lbValue res = {}; + res.type = t_llvm_bool; + if (is_type_integer(left.type) || + is_type_boolean(left.type) || + is_type_pointer(left.type) || + is_type_proc(left.type) || + is_type_enum(left.type)) { + LLVMIntPredicate pred = {}; + if (is_type_unsigned(left.type)) { + switch (op_kind) { + case Token_Gt: pred = LLVMIntUGT; break; + case Token_GtEq: pred = LLVMIntUGE; break; + case Token_Lt: pred = LLVMIntULT; break; + case Token_LtEq: pred = LLVMIntULE; break; + } + } else { + switch (op_kind) { + case Token_Gt: pred = LLVMIntSGT; break; + case Token_GtEq: pred = LLVMIntSGE; break; + case Token_Lt: pred = LLVMIntSLT; break; + case Token_LtEq: pred = LLVMIntSLE; break; + } + } + switch (op_kind) { + case Token_CmpEq: pred = LLVMIntEQ; break; + case Token_NotEq: pred = LLVMIntNE; break; + } + res.value = LLVMBuildICmp(p->builder, pred, left.value, right.value, ""); + } else if (is_type_float(left.type)) { + LLVMRealPredicate pred = {}; + switch (op_kind) { + case Token_CmpEq: pred = LLVMRealOEQ; break; + case Token_Gt: pred = LLVMRealOGT; break; + case Token_GtEq: pred = LLVMRealOGE; break; + case Token_Lt: pred = LLVMRealOLT; break; + case Token_LtEq: pred = LLVMRealOLE; break; + case Token_NotEq: pred = LLVMRealONE; break; + } + res.value = LLVMBuildFCmp(p->builder, pred, left.value, right.value, ""); + } else if (is_type_typeid(left.type)) { + LLVMIntPredicate pred = {}; + switch (op_kind) { + case Token_Gt: pred = LLVMIntUGT; break; + case Token_GtEq: pred = LLVMIntUGE; break; + case Token_Lt: pred = LLVMIntULT; break; + case Token_LtEq: pred = LLVMIntULE; break; + case Token_CmpEq: pred = LLVMIntEQ; break; + case Token_NotEq: pred = LLVMIntNE; break; + } + res.value = LLVMBuildICmp(p->builder, pred, left.value, right.value, ""); + } else { + GB_PANIC("Unhandled comparison kind %s %.*s %s", type_to_string(left.type), LIT(token_strings[op_kind]), type_to_string(right.type)); + } + + return res; +} + + +lbValue lb_generate_anonymous_proc_lit(lbModule *m, String const &prefix_name, Ast *expr, lbProcedure *parent) { + ast_node(pl, ProcLit, expr); + + // NOTE(bill): Generate a new name + // parent$count + isize name_len = prefix_name.len + 1 + 8 + 1; + char *name_text = gb_alloc_array(heap_allocator(), char, name_len); + i32 name_id = cast(i32)m->anonymous_proc_lits.entries.count; + + name_len = gb_snprintf(name_text, name_len, "%.*s$anon-%d", LIT(prefix_name), name_id); + String name = make_string((u8 *)name_text, name_len-1); + + Type *type = type_of_expr(expr); + set_procedure_abi_types(heap_allocator(), type); + + + Token token = {}; + token.pos = ast_token(expr).pos; + token.kind = Token_Ident; + token.string = name; + Entity *e = alloc_entity_procedure(nullptr, token, type, pl->tags); + e->decl_info = pl->decl; + lbProcedure *p = lb_create_procedure(m, e); + + lbValue value = {}; + value.value = p->value; + value.type = p->type; + + array_add(&m->procedures_to_generate, p); + if (parent != nullptr) { + array_add(&parent->children, p); + } else { + map_set(&m->members, hash_string(name), value); + } + + map_set(&m->anonymous_proc_lits, hash_pointer(expr), p); + + return value; +} + +lbValue lb_emit_union_cast(lbProcedure *p, lbValue value, Type *type, TokenPos pos, bool do_conversion_check=true) { + lbModule *m = p->module; + + Type *src_type = value.type; + bool is_ptr = is_type_pointer(src_type); + + bool is_tuple = true; + Type *tuple = type; + if (type->kind != Type_Tuple) { + is_tuple = false; + tuple = make_optional_ok_type(type); + } + + lbAddr v = lb_add_local_generated(p, tuple, true); + + if (is_ptr) { + value = lb_emit_load(p, value); + } + Type *src = base_type(type_deref(src_type)); + GB_ASSERT_MSG(is_type_union(src), "%s", type_to_string(src_type)); + Type *dst = tuple->Tuple.variables[0]->type; + + lbValue value_ = lb_address_from_load_or_generate_local(p, value); + + lbValue tag = {}; + lbValue dst_tag = {}; + lbValue cond = {}; + lbValue data = {}; + + lbValue gep0 = lb_emit_struct_ep(p, v.addr, 0); + lbValue gep1 = lb_emit_struct_ep(p, v.addr, 1); + + if (is_type_union_maybe_pointer(src)) { + data = lb_emit_load(p, lb_emit_conv(p, value_, gep0.type)); + } else { + tag = lb_emit_load(p, lb_emit_union_tag_ptr(p, value_)); + dst_tag = lb_const_union_tag(m, src, dst); + } + + lbBlock *ok_block = lb_create_block(p, "union_cast.ok"); + lbBlock *end_block = lb_create_block(p, "union_cast.end"); + + if (data.value != nullptr) { + GB_ASSERT(is_type_union_maybe_pointer(src)); + cond = lb_emit_comp_against_nil(p, Token_NotEq, data); + } else { + cond = lb_emit_comp(p, Token_CmpEq, tag, dst_tag); + } + + lb_emit_if(p, cond, ok_block, end_block); + lb_start_block(p, ok_block); + + + + if (data.value == nullptr) { + data = lb_emit_load(p, lb_emit_conv(p, value_, gep0.type)); + } + lb_emit_store(p, gep0, data); + lb_emit_store(p, gep1, lb_const_bool(m, t_bool, true)); + + lb_emit_jump(p, end_block); + lb_start_block(p, end_block); + + if (!is_tuple) { + if (do_conversion_check) { + // NOTE(bill): Panic on invalid conversion + Type *dst_type = tuple->Tuple.variables[0]->type; + + lbValue ok = lb_emit_load(p, lb_emit_struct_ep(p, v.addr, 1)); + auto args = array_make<lbValue>(heap_allocator(), 6); + args[0] = ok; + + args[1] = lb_const_string(m, pos.file); + args[2] = lb_const_int(m, t_int, pos.line); + args[3] = lb_const_int(m, t_int, pos.column); + + args[4] = lb_typeid(m, src_type); + args[5] = lb_typeid(m, dst_type); + lb_emit_runtime_call(p, "type_assertion_check", args); + } + + return lb_emit_load(p, lb_emit_struct_ep(p, v.addr, 0)); + } + return lb_addr_load(p, v); +} + +lbAddr lb_emit_any_cast_addr(lbProcedure *p, lbValue value, Type *type, TokenPos pos) { + lbModule *m = p->module; + + Type *src_type = value.type; + + if (is_type_pointer(src_type)) { + value = lb_emit_load(p, value); + } + + bool is_tuple = true; + Type *tuple = type; + if (type->kind != Type_Tuple) { + is_tuple = false; + tuple = make_optional_ok_type(type); + } + Type *dst_type = tuple->Tuple.variables[0]->type; + + lbAddr v = lb_add_local_generated(p, tuple, true); + + lbValue dst_typeid = lb_typeid(m, dst_type); + lbValue any_typeid = lb_emit_struct_ev(p, value, 1); + + + lbBlock *ok_block = lb_create_block(p, "any_cast.ok"); + lbBlock *end_block = lb_create_block(p, "any_cast.end"); + lbValue cond = lb_emit_comp(p, Token_CmpEq, any_typeid, dst_typeid); + lb_emit_if(p, cond, ok_block, end_block); + lb_start_block(p, ok_block); + + lbValue gep0 = lb_emit_struct_ep(p, v.addr, 0); + lbValue gep1 = lb_emit_struct_ep(p, v.addr, 1); + + lbValue any_data = lb_emit_struct_ev(p, value, 0); + lbValue ptr = lb_emit_conv(p, any_data, alloc_type_pointer(dst_type)); + lb_emit_store(p, gep0, lb_emit_load(p, ptr)); + lb_emit_store(p, gep1, lb_const_bool(m, t_bool, true)); + + lb_emit_jump(p, end_block); + lb_start_block(p, end_block); + + if (!is_tuple) { + // NOTE(bill): Panic on invalid conversion + + lbValue ok = lb_emit_load(p, lb_emit_struct_ep(p, v.addr, 1)); + auto args = array_make<lbValue>(heap_allocator(), 6); + args[0] = ok; + + args[1] = lb_const_string(m, pos.file); + args[2] = lb_const_int(m, t_int, pos.line); + args[3] = lb_const_int(m, t_int, pos.column); + + args[4] = any_typeid; + args[5] = dst_typeid; + lb_emit_runtime_call(p, "type_assertion_check", args); + + return lb_addr(lb_emit_struct_ep(p, v.addr, 0)); + } + return v; +} +lbValue lb_emit_any_cast(lbProcedure *p, lbValue value, Type *type, TokenPos pos) { + return lb_addr_load(p, lb_emit_any_cast_addr(p, value, type, pos)); +} + + +lbValue lb_build_expr(lbProcedure *p, Ast *expr) { + lbModule *m = p->module; + + expr = unparen_expr(expr); + + TypeAndValue tv = type_and_value_of_expr(expr); + GB_ASSERT(tv.mode != Addressing_Invalid); + GB_ASSERT(tv.mode != Addressing_Type); + + if (tv.value.kind != ExactValue_Invalid) { + // NOTE(bill): Short on constant values + return lb_const_value(p->module, tv.type, tv.value); + } + + + + switch (expr->kind) { + case_ast_node(bl, BasicLit, expr); + TokenPos pos = bl->token.pos; + GB_PANIC("Non-constant basic literal %.*s(%td:%td) - %.*s", LIT(pos.file), pos.line, pos.column, LIT(token_strings[bl->token.kind])); + case_end; + + case_ast_node(bd, BasicDirective, expr); + TokenPos pos = bd->token.pos; + GB_PANIC("Non-constant basic literal %.*s(%td:%td) - %.*s", LIT(pos.file), pos.line, pos.column, LIT(bd->name)); + case_end; + + case_ast_node(i, Implicit, expr); + return lb_addr_load(p, lb_build_addr(p, expr)); + case_end; + + case_ast_node(u, Undef, expr) + lbValue res = {}; + if (is_type_untyped(tv.type)) { + res.value = nullptr; + res.type = t_untyped_undef; + } else { + res.value = LLVMGetUndef(lb_type(m, tv.type)); + res.type = tv.type; + } + return res; + case_end; + + case_ast_node(i, Ident, expr); + Entity *e = entity_of_ident(expr); + GB_ASSERT_MSG(e != nullptr, "%s", expr_to_string(expr)); + if (e->kind == Entity_Builtin) { + Token token = ast_token(expr); + GB_PANIC("TODO(bill): lb_build_expr Entity_Builtin '%.*s'\n" + "\t at %.*s(%td:%td)", LIT(builtin_procs[e->Builtin.id].name), + LIT(token.pos.file), token.pos.line, token.pos.column); + return {}; + } else if (e->kind == Entity_Nil) { + lbValue res = {}; + res.value = nullptr; + res.type = e->type; + return res; + } + GB_ASSERT(e->kind != Entity_ProcGroup); + + auto *found = map_get(&p->module->values, hash_entity(e)); + if (found) { + auto v = *found; + // NOTE(bill): This is because pointers are already pointers in LLVM + if (is_type_proc(v.type)) { + return v; + } + return lb_emit_load(p, v); + } else if (e != nullptr && e->kind == Entity_Variable) { + return lb_addr_load(p, lb_build_addr(p, expr)); + } + gb_printf_err("Error in: %.*s(%td:%td)\n", LIT(p->name), i->token.pos.line, i->token.pos.column); + GB_PANIC("nullptr value for expression from identifier: %.*s.%.*s (%p) : %s @ %p", LIT(e->pkg->name), LIT(e->token.string), e, type_to_string(e->type), expr); + return {}; + case_end; + + case_ast_node(de, DerefExpr, expr); + return lb_addr_load(p, lb_build_addr(p, expr)); + case_end; + + case_ast_node(se, SelectorExpr, expr); + TypeAndValue tav = type_and_value_of_expr(expr); + GB_ASSERT(tav.mode != Addressing_Invalid); + return lb_addr_load(p, lb_build_addr(p, expr)); + case_end; + + case_ast_node(ise, ImplicitSelectorExpr, expr); + TypeAndValue tav = type_and_value_of_expr(expr); + GB_ASSERT(tav.mode == Addressing_Constant); + + return lb_const_value(p->module, tv.type, tv.value); + case_end; + + case_ast_node(te, TernaryExpr, expr); + LLVMValueRef incoming_values[2] = {}; + LLVMBasicBlockRef incoming_blocks[2] = {}; + + GB_ASSERT(te->y != nullptr); + lbBlock *then = lb_create_block(p, "if.then"); + lbBlock *done = lb_create_block(p, "if.done"); // NOTE(bill): Append later + lbBlock *else_ = lb_create_block(p, "if.else"); + + lbValue cond = lb_build_cond(p, te->cond, then, else_); + lb_start_block(p, then); + + Type *type = default_type(type_of_expr(expr)); + + lb_open_scope(p); + incoming_values[0] = lb_emit_conv(p, lb_build_expr(p, te->x), type).value; + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_emit_jump(p, done); + lb_start_block(p, else_); + + lb_open_scope(p); + incoming_values[1] = lb_emit_conv(p, lb_build_expr(p, te->y), type).value; + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_emit_jump(p, done); + lb_start_block(p, done); + + lbValue res = {}; + res.value = LLVMBuildPhi(p->builder, lb_type(p->module, type), ""); + res.type = type; + + GB_ASSERT(p->curr_block->preds.count >= 2); + incoming_blocks[0] = p->curr_block->preds[0]->block; + incoming_blocks[1] = p->curr_block->preds[1]->block; + + LLVMAddIncoming(res.value, incoming_values, incoming_blocks, 2); + + return res; + case_end; + + case_ast_node(te, TernaryIfExpr, expr); + LLVMValueRef incoming_values[2] = {}; + LLVMBasicBlockRef incoming_blocks[2] = {}; + + GB_ASSERT(te->y != nullptr); + lbBlock *then = lb_create_block(p, "if.then"); + lbBlock *done = lb_create_block(p, "if.done"); // NOTE(bill): Append later + lbBlock *else_ = lb_create_block(p, "if.else"); + + lbValue cond = lb_build_cond(p, te->cond, then, else_); + lb_start_block(p, then); + + Type *type = default_type(type_of_expr(expr)); + + lb_open_scope(p); + incoming_values[0] = lb_emit_conv(p, lb_build_expr(p, te->x), type).value; + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_emit_jump(p, done); + lb_start_block(p, else_); + + lb_open_scope(p); + incoming_values[1] = lb_emit_conv(p, lb_build_expr(p, te->y), type).value; + lb_close_scope(p, lbDeferExit_Default, nullptr); + + lb_emit_jump(p, done); + lb_start_block(p, done); + + lbValue res = {}; + res.value = LLVMBuildPhi(p->builder, lb_type(p->module, type), ""); + res.type = type; + + GB_ASSERT(p->curr_block->preds.count >= 2); + incoming_blocks[0] = p->curr_block->preds[0]->block; + incoming_blocks[1] = p->curr_block->preds[1]->block; + + LLVMAddIncoming(res.value, incoming_values, incoming_blocks, 2); + + return res; + case_end; + + case_ast_node(te, TernaryWhenExpr, expr); + TypeAndValue tav = type_and_value_of_expr(te->cond); + GB_ASSERT(tav.mode == Addressing_Constant); + GB_ASSERT(tav.value.kind == ExactValue_Bool); + if (tav.value.value_bool) { + return lb_build_expr(p, te->x); + } else { + return lb_build_expr(p, te->y); + } + case_end; + + case_ast_node(ta, TypeAssertion, expr); + TokenPos pos = ast_token(expr).pos; + Type *type = tv.type; + lbValue e = lb_build_expr(p, ta->expr); + Type *t = type_deref(e.type); + if (is_type_union(t)) { + return lb_emit_union_cast(p, e, type, pos); + } else if (is_type_any(t)) { + return lb_emit_any_cast(p, e, type, pos); + } else { + GB_PANIC("TODO(bill): type assertion %s", type_to_string(e.type)); + } + case_end; + + case_ast_node(tc, TypeCast, expr); + lbValue e = lb_build_expr(p, tc->expr); + switch (tc->token.kind) { + case Token_cast: + return lb_emit_conv(p, e, tv.type); + case Token_transmute: + return lb_emit_transmute(p, e, tv.type); + } + GB_PANIC("Invalid AST TypeCast"); + case_end; + + case_ast_node(ac, AutoCast, expr); + return lb_build_expr(p, ac->expr); + case_end; + + case_ast_node(ue, UnaryExpr, expr); + switch (ue->op.kind) { + case Token_And: { + Ast *ue_expr = unparen_expr(ue->expr); + if (ue_expr->kind == Ast_CompoundLit) { + lbValue v = lb_build_expr(p, ue->expr); + + Type *type = v.type; + lbAddr addr = {}; + if (p->is_startup) { + addr = lb_add_global_generated(p->module, type, v); + } else { + addr = lb_add_local_generated(p, type, false); + } + lb_addr_store(p, addr, v); + return addr.addr; + + } else if (ue_expr->kind == Ast_TypeAssertion) { + gbAllocator a = heap_allocator(); + GB_ASSERT(is_type_pointer(tv.type)); + + ast_node(ta, TypeAssertion, ue_expr); + TokenPos pos = ast_token(expr).pos; + Type *type = type_of_expr(ue_expr); + GB_ASSERT(!is_type_tuple(type)); + + lbValue e = lb_build_expr(p, ta->expr); + Type *t = type_deref(e.type); + if (is_type_union(t)) { + lbValue v = e; + if (!is_type_pointer(v.type)) { + v = lb_address_from_load_or_generate_local(p, v); + } + Type *src_type = type_deref(v.type); + Type *dst_type = type; + + lbValue src_tag = lb_emit_load(p, lb_emit_union_tag_ptr(p, v)); + lbValue dst_tag = lb_const_union_tag(p->module, src_type, dst_type); + + lbValue ok = lb_emit_comp(p, Token_CmpEq, src_tag, dst_tag); + auto args = array_make<lbValue>(heap_allocator(), 6); + args[0] = ok; + + args[1] = lb_find_or_add_entity_string(p->module, pos.file); + args[2] = lb_const_int(p->module, t_int, pos.line); + args[3] = lb_const_int(p->module, t_int, pos.column); + + args[4] = lb_typeid(p->module, src_type); + args[5] = lb_typeid(p->module, dst_type); + lb_emit_runtime_call(p, "type_assertion_check", args); + + lbValue data_ptr = v; + return lb_emit_conv(p, data_ptr, tv.type); + } else if (is_type_any(t)) { + lbValue v = e; + if (is_type_pointer(v.type)) { + v = lb_emit_load(p, v); + } + + lbValue data_ptr = lb_emit_struct_ev(p, v, 0); + lbValue any_id = lb_emit_struct_ev(p, v, 1); + lbValue id = lb_typeid(p->module, type); + + + lbValue ok = lb_emit_comp(p, Token_CmpEq, any_id, id); + auto args = array_make<lbValue>(heap_allocator(), 6); + args[0] = ok; + + args[1] = lb_find_or_add_entity_string(p->module, pos.file); + args[2] = lb_const_int(p->module, t_int, pos.line); + args[3] = lb_const_int(p->module, t_int, pos.column); + + args[4] = any_id; + args[5] = id; + lb_emit_runtime_call(p, "type_assertion_check", args); + + return lb_emit_conv(p, data_ptr, tv.type); + } else { + GB_PANIC("TODO(bill): type assertion %s", type_to_string(type)); + } + } + + return lb_build_addr_ptr(p, ue->expr); + } + default: + { + lbValue v = lb_build_expr(p, ue->expr); + return lb_emit_unary_arith(p, ue->op.kind, v, tv.type); + } + } + case_end; + + case_ast_node(be, BinaryExpr, expr); + return lb_build_binary_expr(p, expr); + case_end; + + case_ast_node(pl, ProcLit, expr); + return lb_generate_anonymous_proc_lit(p->module, p->name, expr, p); + case_end; + + case_ast_node(cl, CompoundLit, expr); + return lb_addr_load(p, lb_build_addr(p, expr)); + case_end; + + case_ast_node(ce, CallExpr, expr); + return lb_build_call_expr(p, expr); + case_end; + + case_ast_node(se, SliceExpr, expr); + return lb_addr_load(p, lb_build_addr(p, expr)); + case_end; + + case_ast_node(ie, IndexExpr, expr); + return lb_addr_load(p, lb_build_addr(p, expr)); + case_end; + } + + GB_PANIC("lb_build_expr: %.*s", LIT(ast_strings[expr->kind])); + + return {}; +} + +lbValue lb_get_using_variable(lbProcedure *p, Entity *e) { + GB_ASSERT(e->kind == Entity_Variable && e->flags & EntityFlag_Using); + String name = e->token.string; + Entity *parent = e->using_parent; + Selection sel = lookup_field(parent->type, name, false); + GB_ASSERT(sel.entity != nullptr); + lbValue *pv = map_get(&p->module->values, hash_entity(parent)); + lbValue v = {}; + if (pv != nullptr) { + v = *pv; + } else { + GB_ASSERT_MSG(e->using_expr != nullptr, "%.*s", LIT(name)); + v = lb_build_addr_ptr(p, e->using_expr); + } + GB_ASSERT(v.value != nullptr); + GB_ASSERT(parent->type == type_deref(v.type)); + return lb_emit_deep_field_gep(p, v, sel); +} + + +lbAddr lb_build_addr_from_entity(lbProcedure *p, Entity *e, Ast *expr) { + GB_ASSERT(e != nullptr); + if (e->kind == Entity_Constant) { + Type *t = default_type(type_of_expr(expr)); + lbValue v = lb_const_value(p->module, t, e->Constant.value); + lbAddr g = lb_add_global_generated(p->module, t, v); + return g; + } + + + lbValue v = {}; + lbValue *found = map_get(&p->module->values, hash_entity(e)); + if (found) { + v = *found; + } else if (e->kind == Entity_Variable && e->flags & EntityFlag_Using) { + // NOTE(bill): Calculate the using variable every time + v = lb_get_using_variable(p, e); + } + + if (v.value == nullptr) { + error(expr, "%.*s Unknown value: %.*s, entity: %p %.*s", + LIT(p->name), + LIT(e->token.string), e, LIT(entity_strings[e->kind])); + GB_PANIC("Unknown value"); + } + + return lb_addr(v); +} + +lbValue lb_gen_map_header(lbProcedure *p, lbValue map_val_ptr, Type *map_type) { + GB_ASSERT_MSG(is_type_pointer(map_val_ptr.type), "%s", type_to_string(map_val_ptr.type)); + gbAllocator a = heap_allocator(); + lbAddr h = lb_add_local_generated(p, t_map_header, false); // all the values will be initialzed later + map_type = base_type(map_type); + GB_ASSERT(map_type->kind == Type_Map); + + Type *key_type = map_type->Map.key; + Type *val_type = map_type->Map.value; + + // NOTE(bill): Removes unnecessary allocation if split gep + lbValue gep0 = lb_emit_struct_ep(p, h.addr, 0); + lbValue m = lb_emit_conv(p, map_val_ptr, type_deref(gep0.type)); + lb_emit_store(p, gep0, m); + + lb_emit_store(p, lb_emit_struct_ep(p, h.addr, 1), lb_const_bool(p->module, t_bool, is_type_string(key_type))); + + i64 entry_size = type_size_of (map_type->Map.entry_type); + i64 entry_align = type_align_of (map_type->Map.entry_type); + i64 value_offset = type_offset_of(map_type->Map.entry_type, 2); + i64 value_size = type_size_of (map_type->Map.value); + + lb_emit_store(p, lb_emit_struct_ep(p, h.addr, 2), lb_const_int(p->module, t_int, entry_size)); + lb_emit_store(p, lb_emit_struct_ep(p, h.addr, 3), lb_const_int(p->module, t_int, entry_align)); + lb_emit_store(p, lb_emit_struct_ep(p, h.addr, 4), lb_const_int(p->module, t_uintptr, value_offset)); + lb_emit_store(p, lb_emit_struct_ep(p, h.addr, 5), lb_const_int(p->module, t_int, value_size)); + + return lb_addr_load(p, h); +} + +lbValue lb_gen_map_key(lbProcedure *p, lbValue key, Type *key_type) { + Type *hash_type = t_u64; + lbAddr v = lb_add_local_generated(p, t_map_key, true); + Type *t = base_type(key.type); + key = lb_emit_conv(p, key, key_type); + if (is_type_integer(t)) { + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 0), lb_emit_conv(p, key, hash_type)); + } else if (is_type_enum(t)) { + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 0), lb_emit_conv(p, key, hash_type)); + } else if (is_type_typeid(t)) { + lbValue i = lb_emit_transmute(p, key, t_uint); + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 0), lb_emit_conv(p, i, hash_type)); + } else if (is_type_pointer(t)) { + lbValue ptr = lb_emit_conv(p, key, t_uintptr); + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 0), lb_emit_conv(p, ptr, hash_type)); + } else if (is_type_float(t)) { + lbValue bits = {}; + i64 size = type_size_of(t); + switch (8*size) { + case 32: bits = lb_emit_transmute(p, key, t_u32); break; + case 64: bits = lb_emit_transmute(p, key, t_u64); break; + default: GB_PANIC("Unhandled float size: %lld bits", size); break; + } + + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 0), lb_emit_conv(p, bits, hash_type)); + } else if (is_type_string(t)) { + lbValue str = lb_emit_conv(p, key, t_string); + lbValue hashed_str = {}; + + if (false && lb_is_const(str)) { + String value = lb_get_const_string(p->module, str); + u64 hs = fnv64a(value.text, value.len); + hashed_str = lb_const_value(p->module, t_u64, exact_value_u64(hs)); + } else { + auto args = array_make<lbValue>(heap_allocator(), 1); + args[0] = str; + hashed_str = lb_emit_runtime_call(p, "default_hash_string", args); + } + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 0), hashed_str); + lb_emit_store(p, lb_emit_struct_ep(p, v.addr, 1), str); + } else { + GB_PANIC("Unhandled map key type"); + } + + return lb_addr_load(p, v); +} + +void lb_insert_dynamic_map_key_and_value(lbProcedure *p, lbAddr addr, Type *map_type, + lbValue map_key, lbValue map_value) { + map_type = base_type(map_type); + GB_ASSERT(map_type->kind == Type_Map); + + lbValue h = lb_gen_map_header(p, addr.addr, map_type); + lbValue key = lb_gen_map_key(p, map_key, map_type->Map.key); + lbValue v = lb_emit_conv(p, map_value, map_type->Map.value); + + lbAddr value_addr = lb_add_local_generated(p, v.type, false); + lb_addr_store(p, value_addr, v); + + auto args = array_make<lbValue>(heap_allocator(), 4); + args[0] = h; + args[1] = key; + args[2] = lb_emit_conv(p, value_addr.addr, t_rawptr); + args[3] = lb_emit_source_code_location(p, nullptr); + lb_emit_runtime_call(p, "__dynamic_map_set", args); +} + + +lbAddr lb_build_addr(lbProcedure *p, Ast *expr) { + expr = unparen_expr(expr); + + switch (expr->kind) { + case_ast_node(i, Implicit, expr); + lbAddr v = {}; + switch (i->kind) { + case Token_context: + v = lb_find_or_generate_context_ptr(p); + break; + } + + GB_ASSERT(v.addr.value != nullptr); + return v; + case_end; + + case_ast_node(i, Ident, expr); + if (is_blank_ident(expr)) { + lbAddr val = {}; + return val; + } + String name = i->token.string; + Entity *e = entity_of_ident(expr); + return lb_build_addr_from_entity(p, e, expr); + case_end; + + case_ast_node(se, SelectorExpr, expr); + Ast *sel = unparen_expr(se->selector); + if (sel->kind == Ast_Ident) { + String selector = sel->Ident.token.string; + TypeAndValue tav = type_and_value_of_expr(se->expr); + + if (tav.mode == Addressing_Invalid) { + // NOTE(bill): Imports + Entity *imp = entity_of_ident(se->expr); + if (imp != nullptr) { + GB_ASSERT(imp->kind == Entity_ImportName); + } + return lb_build_addr(p, unparen_expr(se->selector)); + } + + + Type *type = base_type(tav.type); + if (tav.mode == Addressing_Type) { // Addressing_Type + Selection sel = lookup_field(type, selector, true); + Entity *e = sel.entity; + GB_ASSERT(e->kind == Entity_Variable); + GB_ASSERT(e->flags & EntityFlag_TypeField); + String name = e->token.string; + /*if (name == "names") { + lbValue ti_ptr = lb_type_info(m, type); + lbValue variant = lb_emit_struct_ep(p, ti_ptr, 2); + + lbValue names_ptr = nullptr; + + if (is_type_enum(type)) { + lbValue enum_info = lb_emit_conv(p, variant, t_type_info_enum_ptr); + names_ptr = lb_emit_struct_ep(p, enum_info, 1); + } else if (type->kind == Type_Struct) { + lbValue struct_info = lb_emit_conv(p, variant, t_type_info_struct_ptr); + names_ptr = lb_emit_struct_ep(p, struct_info, 1); + } + return ir_addr(names_ptr); + } else */{ + GB_PANIC("Unhandled TypeField %.*s", LIT(name)); + } + GB_PANIC("Unreachable"); + } + + Selection sel = lookup_field(type, selector, false); + GB_ASSERT(sel.entity != nullptr); + + + if (sel.entity->type->kind == Type_BitFieldValue) { + lbAddr addr = lb_build_addr(p, se->expr); + Type *bft = type_deref(lb_addr_type(addr)); + if (sel.index.count == 1) { + GB_ASSERT(is_type_bit_field(bft)); + i32 index = sel.index[0]; + return lb_addr_bit_field(lb_addr_get_ptr(p, addr), index); + } else { + Selection s = sel; + s.index.count--; + i32 index = s.index[s.index.count-1]; + lbValue a = lb_addr_get_ptr(p, addr); + a = lb_emit_deep_field_gep(p, a, s); + return lb_addr_bit_field(a, index); + } + } else { + lbAddr addr = lb_build_addr(p, se->expr); + if (addr.kind == lbAddr_Context) { + GB_ASSERT(sel.index.count > 0); + if (addr.ctx.sel.index.count >= 0) { + sel = selection_combine(addr.ctx.sel, sel); + } + addr.ctx.sel = sel; + addr.kind = lbAddr_Context; + return addr; + } else if (addr.kind == lbAddr_SoaVariable) { + lbValue index = addr.soa.index; + i32 first_index = sel.index[0]; + Selection sub_sel = sel; + sub_sel.index.data += 1; + sub_sel.index.count -= 1; + + lbValue arr = lb_emit_struct_ep(p, addr.addr, first_index); + + Type *t = base_type(type_deref(addr.addr.type)); + GB_ASSERT(is_type_soa_struct(t)); + + // TODO(bill): Bounds check + if (!lb_is_const(addr.soa.index) || t->Struct.soa_kind != StructSoa_Fixed) { + lbValue len = lb_soa_struct_len(p, addr.addr); + // lb_emit_bounds_check(p, ast_token(addr.soa.index_expr), addr.soa.index, len); + } + + lbValue item = {}; + + if (t->Struct.soa_kind == StructSoa_Fixed) { + item = lb_emit_array_ep(p, arr, index); + } else { + item = lb_emit_load(p, lb_emit_ptr_offset(p, arr, index)); + } + if (sub_sel.index.count > 0) { + item = lb_emit_deep_field_gep(p, item, sub_sel); + } + return lb_addr(item); + } + lbValue a = lb_addr_get_ptr(p, addr); + a = lb_emit_deep_field_gep(p, a, sel); + return lb_addr(a); + } + } else { + GB_PANIC("Unsupported selector expression"); + } + case_end; + + case_ast_node(ta, TypeAssertion, expr); + gbAllocator a = heap_allocator(); + TokenPos pos = ast_token(expr).pos; + lbValue e = lb_build_expr(p, ta->expr); + Type *t = type_deref(e.type); + if (is_type_union(t)) { + Type *type = type_of_expr(expr); + lbAddr v = lb_add_local_generated(p, type, false); + lb_addr_store(p, v, lb_emit_union_cast(p, lb_build_expr(p, ta->expr), type, pos)); + return v; + } else if (is_type_any(t)) { + Type *type = type_of_expr(expr); + return lb_emit_any_cast_addr(p, lb_build_expr(p, ta->expr), type, pos); + } else { + GB_PANIC("TODO(bill): type assertion %s", type_to_string(e.type)); + } + case_end; + + case_ast_node(ue, UnaryExpr, expr); + switch (ue->op.kind) { + case Token_And: { + return lb_build_addr(p, ue->expr); + } + default: + GB_PANIC("Invalid unary expression for lb_build_addr"); + } + case_end; + case_ast_node(be, BinaryExpr, expr); + lbValue v = lb_build_expr(p, expr); + Type *t = v.type; + if (is_type_pointer(t)) { + return lb_addr(v); + } + return lb_addr(lb_address_from_load_or_generate_local(p, v)); + case_end; + + case_ast_node(ie, IndexExpr, expr); + Type *t = base_type(type_of_expr(ie->expr)); + gbAllocator a = heap_allocator(); + + bool deref = is_type_pointer(t); + t = base_type(type_deref(t)); + if (is_type_soa_struct(t)) { + // SOA STRUCTURES!!!! + lbValue val = lb_build_addr_ptr(p, ie->expr); + if (deref) { + val = lb_emit_load(p, val); + } + + lbValue index = lb_build_expr(p, ie->index); + return lb_addr_soa_variable(val, index, ie->index); + } + + if (ie->expr->tav.mode == Addressing_SoaVariable) { + // SOA Structures for slices/dynamic arrays + GB_ASSERT(is_type_pointer(type_of_expr(ie->expr))); + + lbValue field = lb_build_expr(p, ie->expr); + lbValue index = lb_build_expr(p, ie->index); + + + if (!build_context.no_bounds_check) { + // // TODO HACK(bill): Clean up this hack to get the length for bounds checking + // GB_ASSERT(LLVMIsALoadInst(field.value)); + + // lbValue a = {}; + // a.value = LLVMGetOperand(field.value, 0); + // a.type = alloc_type_pointer(field.type); + + // irInstr *b = &a->Instr; + // GB_ASSERT(b->kind == irInstr_StructElementPtr); + // lbValue base_struct = b->StructElementPtr.address; + + // GB_ASSERT(is_type_soa_struct(type_deref(ir_type(base_struct)))); + // lbValue len = ir_soa_struct_len(p, base_struct); + // ir_emit_bounds_check(p, ast_token(ie->index), index, len); + } + + lbValue val = lb_emit_ptr_offset(p, field, index); + return lb_addr(val); + } + + GB_ASSERT_MSG(is_type_indexable(t), "%s %s", type_to_string(t), expr_to_string(expr)); + + if (is_type_map(t)) { + lbValue map_val = lb_build_addr_ptr(p, ie->expr); + if (deref) { + map_val = lb_emit_load(p, map_val); + } + + lbValue key = lb_build_expr(p, ie->index); + key = lb_emit_conv(p, key, t->Map.key); + + Type *result_type = type_of_expr(expr); + return lb_addr_map(map_val, key, t, result_type); + } + + lbValue using_addr = {}; + + switch (t->kind) { + case Type_Array: { + lbValue array = {}; + if (using_addr.value != nullptr) { + array = using_addr; + } else { + array = lb_build_addr_ptr(p, ie->expr); + if (deref) { + array = lb_emit_load(p, array); + } + } + lbValue index = lb_build_expr(p, ie->index); + index = lb_emit_conv(p, index, t_int); + lbValue elem = lb_emit_array_ep(p, array, index); + + auto index_tv = type_and_value_of_expr(ie->index); + if (index_tv.mode != Addressing_Constant) { + // lbValue len = lb_const_int(p->module, t_int, t->Array.count); + // ir_emit_bounds_check(p, ast_token(ie->index), index, len); + } + return lb_addr(elem); + } + + case Type_EnumeratedArray: { + lbValue array = {}; + if (using_addr.value != nullptr) { + array = using_addr; + } else { + array = lb_build_addr_ptr(p, ie->expr); + if (deref) { + array = lb_emit_load(p, array); + } + } + + Type *index_type = t->EnumeratedArray.index; + + auto index_tv = type_and_value_of_expr(ie->index); + + lbValue index = {}; + if (compare_exact_values(Token_NotEq, t->EnumeratedArray.min_value, exact_value_i64(0))) { + if (index_tv.mode == Addressing_Constant) { + ExactValue idx = exact_value_sub(index_tv.value, t->EnumeratedArray.min_value); + index = lb_const_value(p->module, index_type, idx); + } else { + index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int); + index = lb_emit_arith(p, Token_Sub, index, lb_const_value(p->module, index_type, t->EnumeratedArray.min_value), index_type); + } + } else { + index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int); + } + + lbValue elem = lb_emit_array_ep(p, array, index); + + if (index_tv.mode != Addressing_Constant) { + // lbValue len = ir_const_int(t->EnumeratedArray.count); + // ir_emit_bounds_check(p, ast_token(ie->index), index, len); + } + return lb_addr(elem); + } + + case Type_Slice: { + lbValue slice = {}; + if (using_addr.value != nullptr) { + slice = lb_emit_load(p, using_addr); + } else { + slice = lb_build_expr(p, ie->expr); + if (deref) { + slice = lb_emit_load(p, slice); + } + } + lbValue elem = lb_slice_elem(p, slice); + lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int); + lbValue len = lb_slice_len(p, slice); + // ir_emit_bounds_check(p, ast_token(ie->index), index, len); + lbValue v = lb_emit_ptr_offset(p, elem, index); + return lb_addr(v); + } + + case Type_DynamicArray: { + lbValue dynamic_array = {}; + if (using_addr.value != nullptr) { + dynamic_array = lb_emit_load(p, using_addr); + } else { + dynamic_array = lb_build_expr(p, ie->expr); + if (deref) { + dynamic_array = lb_emit_load(p, dynamic_array); + } + } + lbValue elem = lb_dynamic_array_elem(p, dynamic_array); + lbValue len = lb_dynamic_array_len(p, dynamic_array); + lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int); + // lb_emit_bounds_check(p, ast_token(ie->index), index, len); + lbValue v = lb_emit_ptr_offset(p, elem, index); + return lb_addr(v); + } + + + case Type_Basic: { // Basic_string + lbValue str; + lbValue elem; + lbValue len; + lbValue index; + + if (using_addr.value != nullptr) { + str = lb_emit_load(p, using_addr); + } else { + str = lb_build_expr(p, ie->expr); + if (deref) { + str = lb_emit_load(p, str); + } + } + elem = lb_string_elem(p, str); + len = lb_string_len(p, str); + + index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int); + // lb_emit_bounds_check(p, ast_token(ie->index), index, len); + + return lb_addr(lb_emit_ptr_offset(p, elem, index)); + } + } + case_end; + + case_ast_node(se, SliceExpr, expr); + gbAllocator a = heap_allocator(); + lbValue low = lb_const_int(p->module, t_int, 0); + lbValue high = {}; + + if (se->low != nullptr) low = lb_build_expr(p, se->low); + if (se->high != nullptr) high = lb_build_expr(p, se->high); + + bool no_indices = se->low == nullptr && se->high == nullptr; + + lbValue addr = lb_build_addr_ptr(p, se->expr); + lbValue base = lb_emit_load(p, addr); + Type *type = base_type(base.type); + + if (is_type_pointer(type)) { + type = base_type(type_deref(type)); + addr = base; + base = lb_emit_load(p, base); + } + // TODO(bill): Cleanup like mad! + + switch (type->kind) { + case Type_Slice: { + Type *slice_type = type; + lbValue len = lb_slice_len(p, base); + if (high.value == nullptr) high = len; + + if (!no_indices) { + // ir_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr); + } + + lbValue elem = lb_emit_ptr_offset(p, lb_slice_elem(p, base), low); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + + lbAddr slice = lb_add_local_generated(p, slice_type, false); + lb_fill_slice(p, slice, elem, new_len); + return slice; + } + + case Type_DynamicArray: { + Type *elem_type = type->DynamicArray.elem; + Type *slice_type = alloc_type_slice(elem_type); + + lbValue len = lb_dynamic_array_len(p, base); + if (high.value == nullptr) high = len; + + if (!no_indices) { + // lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr); + } + + lbValue elem = lb_emit_ptr_offset(p, lb_dynamic_array_elem(p, base), low); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + + lbAddr slice = lb_add_local_generated(p, slice_type, false); + lb_fill_slice(p, slice, elem, new_len); + return slice; + } + + + case Type_Array: { + Type *slice_type = alloc_type_slice(type->Array.elem); + lbValue len = lb_const_int(p->module, t_int, type->Array.count); + + if (high.value == nullptr) high = len; + + bool low_const = type_and_value_of_expr(se->low).mode == Addressing_Constant; + bool high_const = type_and_value_of_expr(se->high).mode == Addressing_Constant; + + if (!low_const || !high_const) { + if (!no_indices) { + // lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr); + } + } + lbValue elem = lb_emit_ptr_offset(p, lb_array_elem(p, addr), low); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + + lbAddr slice = lb_add_local_generated(p, slice_type, false); + lb_fill_slice(p, slice, elem, new_len); + return slice; + } + + case Type_Basic: { + GB_ASSERT(type == t_string); + lbValue len = lb_string_len(p, base); + if (high.value == nullptr) high = len; + + if (!no_indices) { + // lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr); + } + + lbValue elem = lb_emit_ptr_offset(p, lb_string_elem(p, base), low); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + + lbAddr str = lb_add_local_generated(p, t_string, false); + lb_fill_string(p, str, elem, new_len); + return str; + } + + + case Type_Struct: + if (is_type_soa_struct(type)) { + lbValue len = lb_soa_struct_len(p, addr); + if (high.value == nullptr) high = len; + + if (!no_indices) { + // lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr); + } + #if 1 + + lbAddr dst = lb_add_local_generated(p, type_of_expr(expr), true); + if (type->Struct.soa_kind == StructSoa_Fixed) { + i32 field_count = cast(i32)type->Struct.fields.count; + for (i32 i = 0; i < field_count; i++) { + lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i); + lbValue field_src = lb_emit_struct_ep(p, addr, i); + field_src = lb_emit_array_ep(p, field_src, low); + lb_emit_store(p, field_dst, field_src); + } + + lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + lb_emit_store(p, len_dst, new_len); + } else if (type->Struct.soa_kind == StructSoa_Slice) { + if (no_indices) { + lb_addr_store(p, dst, base); + } else { + i32 field_count = cast(i32)type->Struct.fields.count - 1; + for (i32 i = 0; i < field_count; i++) { + lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i); + lbValue field_src = lb_emit_struct_ev(p, base, i); + field_src = lb_emit_ptr_offset(p, field_src, low); + lb_emit_store(p, field_dst, field_src); + } + + + lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + lb_emit_store(p, len_dst, new_len); + } + } else if (type->Struct.soa_kind == StructSoa_Dynamic) { + i32 field_count = cast(i32)type->Struct.fields.count - 3; + for (i32 i = 0; i < field_count; i++) { + lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i); + lbValue field_src = lb_emit_struct_ev(p, base, i); + field_src = lb_emit_ptr_offset(p, field_src, low); + lb_emit_store(p, field_dst, field_src); + } + + + lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count); + lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int); + lb_emit_store(p, len_dst, new_len); + } + + return dst; + #endif + } + break; + + } + + GB_PANIC("Unknown slicable type"); + case_end; + + case_ast_node(de, DerefExpr, expr); + lbValue addr = lb_build_expr(p, de->expr); + return lb_addr(addr); + case_end; + + case_ast_node(ce, CallExpr, expr); + // NOTE(bill): This is make sure you never need to have an 'array_ev' + lbValue e = lb_build_expr(p, expr); + lbAddr v = lb_add_local_generated(p, e.type, false); + lb_addr_store(p, v, e); + return v; + case_end; + + case_ast_node(cl, CompoundLit, expr); + Type *type = type_of_expr(expr); + Type *bt = base_type(type); + + lbAddr v = lb_add_local_generated(p, type, true); + + Type *et = nullptr; + switch (bt->kind) { + case Type_Array: et = bt->Array.elem; break; + case Type_EnumeratedArray: et = bt->EnumeratedArray.elem; break; + case Type_Slice: et = bt->Slice.elem; break; + case Type_BitSet: et = bt->BitSet.elem; break; + case Type_SimdVector: et = bt->SimdVector.elem; break; + } + + String proc_name = {}; + if (p->entity) { + proc_name = p->entity->token.string; + } + TokenPos pos = ast_token(expr).pos; + + switch (bt->kind) { + default: GB_PANIC("Unknown CompoundLit type: %s", type_to_string(type)); break; + + case Type_Struct: { + + // TODO(bill): "constant" '#raw_union's are not initialized constantly at the moment. + // NOTE(bill): This is due to the layout of the unions when printed to LLVM-IR + bool is_raw_union = is_type_raw_union(bt); + GB_ASSERT(is_type_struct(bt) || is_raw_union); + TypeStruct *st = &bt->Struct; + if (cl->elems.count > 0) { + lb_addr_store(p, v, lb_const_value(p->module, type, exact_value_compound(expr))); + for_array(field_index, cl->elems) { + Ast *elem = cl->elems[field_index]; + + lbValue field_expr = {}; + Entity *field = nullptr; + isize index = field_index; + + if (elem->kind == Ast_FieldValue) { + ast_node(fv, FieldValue, elem); + String name = fv->field->Ident.token.string; + Selection sel = lookup_field(bt, name, false); + index = sel.index[0]; + elem = fv->value; + TypeAndValue tav = type_and_value_of_expr(elem); + } else { + TypeAndValue tav = type_and_value_of_expr(elem); + Selection sel = lookup_field_from_index(bt, st->fields[field_index]->Variable.field_src_index); + index = sel.index[0]; + } + + field = st->fields[index]; + Type *ft = field->type; + if (!is_raw_union && !is_type_typeid(ft) && lb_is_elem_const(elem, ft)) { + continue; + } + + field_expr = lb_build_expr(p, elem); + + + Type *fet = field_expr.type; + GB_ASSERT(fet->kind != Type_Tuple); + + // HACK TODO(bill): THIS IS A MASSIVE HACK!!!! + if (is_type_union(ft) && !are_types_identical(fet, ft) && !is_type_untyped(fet)) { + GB_ASSERT_MSG(union_variant_index(ft, fet) > 0, "%s", type_to_string(fet)); + + lbValue gep = lb_emit_struct_ep(p, lb_addr_get_ptr(p, v), cast(i32)index); + lb_emit_store_union_variant(p, gep, field_expr, fet); + } else { + lbValue fv = lb_emit_conv(p, field_expr, ft); + lbValue gep = lb_emit_struct_ep(p, lb_addr_get_ptr(p, v), cast(i32)index); + lb_emit_store(p, gep, fv); + } + } + } + break; + } + + case Type_Map: { + if (cl->elems.count == 0) { + break; + } + gbAllocator a = heap_allocator(); + { + auto args = array_make<lbValue>(a, 3); + args[0] = lb_gen_map_header(p, v.addr, type); + args[1] = lb_const_int(p->module, t_int, 2*cl->elems.count); + args[2] = lb_emit_source_code_location(p, proc_name, pos); + lb_emit_runtime_call(p, "__dynamic_map_reserve", args); + } + for_array(field_index, cl->elems) { + Ast *elem = cl->elems[field_index]; + ast_node(fv, FieldValue, elem); + + lbValue key = lb_build_expr(p, fv->field); + lbValue value = lb_build_expr(p, fv->value); + lb_insert_dynamic_map_key_and_value(p, v, type, key, value); + } + break; + } + + case Type_Array: { + if (cl->elems.count > 0) { + lb_addr_store(p, v, lb_const_value(p->module, type, exact_value_compound(expr))); + + auto temp_data = array_make<lbCompoundLitElemTempData>(heap_allocator(), 0, cl->elems.count); + defer (array_free(&temp_data)); + + // NOTE(bill): Separate value, gep, store into their own chunks + for_array(i, cl->elems) { + Ast *elem = cl->elems[i]; + if (elem->kind == Ast_FieldValue) { + ast_node(fv, FieldValue, elem); + if (lb_is_elem_const(fv->value, et)) { + continue; + } + if (is_ast_range(fv->field)) { + ast_node(ie, BinaryExpr, fv->field); + TypeAndValue lo_tav = ie->left->tav; + TypeAndValue hi_tav = ie->right->tav; + GB_ASSERT(lo_tav.mode == Addressing_Constant); + GB_ASSERT(hi_tav.mode == Addressing_Constant); + + TokenKind op = ie->op.kind; + i64 lo = exact_value_to_i64(lo_tav.value); + i64 hi = exact_value_to_i64(hi_tav.value); + if (op == Token_Ellipsis) { + hi += 1; + } + + lbValue value = lb_build_expr(p, fv->value); + + for (i64 k = lo; k < hi; k++) { + lbCompoundLitElemTempData data = {}; + data.value = value; + data.elem_index = cast(i32)k; + array_add(&temp_data, data); + } + + } else { + auto tav = fv->field->tav; + GB_ASSERT(tav.mode == Addressing_Constant); + i64 index = exact_value_to_i64(tav.value); + + lbValue value = lb_build_expr(p, fv->value); + lbCompoundLitElemTempData data = {}; + data.value = lb_emit_conv(p, value, et); + data.expr = fv->value; + data.elem_index = cast(i32)index; + array_add(&temp_data, data); + } + + } else { + if (lb_is_elem_const(elem, et)) { + continue; + } + lbCompoundLitElemTempData data = {}; + data.expr = elem; + data.elem_index = cast(i32)i; + array_add(&temp_data, data); + } + } + + for_array(i, temp_data) { + temp_data[i].gep = lb_emit_array_epi(p, lb_addr_get_ptr(p, v), temp_data[i].elem_index); + } + + for_array(i, temp_data) { + auto return_ptr_hint_ast = p->return_ptr_hint_ast; + auto return_ptr_hint_value = p->return_ptr_hint_value; + auto return_ptr_hint_used = p->return_ptr_hint_used; + defer (p->return_ptr_hint_ast = return_ptr_hint_ast); + defer (p->return_ptr_hint_value = return_ptr_hint_value); + defer (p->return_ptr_hint_used = return_ptr_hint_used); + + lbValue field_expr = temp_data[i].value; + Ast *expr = temp_data[i].expr; + + p->return_ptr_hint_value = temp_data[i].gep; + p->return_ptr_hint_ast = unparen_expr(expr); + + if (field_expr.value == nullptr) { + field_expr = lb_build_expr(p, expr); + } + Type *t = field_expr.type; + GB_ASSERT(t->kind != Type_Tuple); + lbValue ev = lb_emit_conv(p, field_expr, et); + + if (!p->return_ptr_hint_used) { + temp_data[i].value = ev; + } + } + + for_array(i, temp_data) { + if (temp_data[i].value.value != nullptr) { + lb_emit_store(p, temp_data[i].gep, temp_data[i].value); + } + } + } + break; + } + case Type_EnumeratedArray: { + if (cl->elems.count > 0) { + lb_addr_store(p, v, lb_const_value(p->module, type, exact_value_compound(expr))); + + auto temp_data = array_make<lbCompoundLitElemTempData>(heap_allocator(), 0, cl->elems.count); + defer (array_free(&temp_data)); + + // NOTE(bill): Separate value, gep, store into their own chunks + for_array(i, cl->elems) { + Ast *elem = cl->elems[i]; + if (elem->kind == Ast_FieldValue) { + ast_node(fv, FieldValue, elem); + if (lb_is_elem_const(fv->value, et)) { + continue; + } + if (is_ast_range(fv->field)) { + ast_node(ie, BinaryExpr, fv->field); + TypeAndValue lo_tav = ie->left->tav; + TypeAndValue hi_tav = ie->right->tav; + GB_ASSERT(lo_tav.mode == Addressing_Constant); + GB_ASSERT(hi_tav.mode == Addressing_Constant); + + TokenKind op = ie->op.kind; + i64 lo = exact_value_to_i64(lo_tav.value); + i64 hi = exact_value_to_i64(hi_tav.value); + if (op == Token_Ellipsis) { + hi += 1; + } + + lbValue value = lb_build_expr(p, fv->value); + + for (i64 k = lo; k < hi; k++) { + lbCompoundLitElemTempData data = {}; + data.value = value; + data.elem_index = cast(i32)k; + array_add(&temp_data, data); + } + + } else { + auto tav = fv->field->tav; + GB_ASSERT(tav.mode == Addressing_Constant); + i64 index = exact_value_to_i64(tav.value); + + lbValue value = lb_build_expr(p, fv->value); + lbCompoundLitElemTempData data = {}; + data.value = lb_emit_conv(p, value, et); + data.expr = fv->value; + data.elem_index = cast(i32)index; + array_add(&temp_data, data); + } + + } else { + if (lb_is_elem_const(elem, et)) { + continue; + } + lbCompoundLitElemTempData data = {}; + data.expr = elem; + data.elem_index = cast(i32)i; + array_add(&temp_data, data); + } + } + + + i32 index_offset = cast(i32)exact_value_to_i64(bt->EnumeratedArray.min_value); + + for_array(i, temp_data) { + i32 index = temp_data[i].elem_index - index_offset; + temp_data[i].gep = lb_emit_array_epi(p, lb_addr_get_ptr(p, v), index); + } + + for_array(i, temp_data) { + auto return_ptr_hint_ast = p->return_ptr_hint_ast; + auto return_ptr_hint_value = p->return_ptr_hint_value; + auto return_ptr_hint_used = p->return_ptr_hint_used; + defer (p->return_ptr_hint_ast = return_ptr_hint_ast); + defer (p->return_ptr_hint_value = return_ptr_hint_value); + defer (p->return_ptr_hint_used = return_ptr_hint_used); + + lbValue field_expr = temp_data[i].value; + Ast *expr = temp_data[i].expr; + + p->return_ptr_hint_value = temp_data[i].gep; + p->return_ptr_hint_ast = unparen_expr(expr); + + if (field_expr.value == nullptr) { + field_expr = lb_build_expr(p, expr); + } + Type *t = field_expr.type; + GB_ASSERT(t->kind != Type_Tuple); + lbValue ev = lb_emit_conv(p, field_expr, et); + + if (!p->return_ptr_hint_used) { + temp_data[i].value = ev; + } + } + + for_array(i, temp_data) { + if (temp_data[i].value.value != nullptr) { + lb_emit_store(p, temp_data[i].gep, temp_data[i].value); + } + } + } + break; + } + case Type_Slice: { + if (cl->elems.count > 0) { + Type *elem_type = bt->Slice.elem; + Type *elem_ptr_type = alloc_type_pointer(elem_type); + Type *elem_ptr_ptr_type = alloc_type_pointer(elem_ptr_type); + lbValue slice = lb_const_value(p->module, type, exact_value_compound(expr)); + + lbValue data = lb_slice_elem(p, slice); + + auto temp_data = array_make<lbCompoundLitElemTempData>(heap_allocator(), 0, cl->elems.count); + defer (array_free(&temp_data)); + + for_array(i, cl->elems) { + Ast *elem = cl->elems[i]; + if (elem->kind == Ast_FieldValue) { + ast_node(fv, FieldValue, elem); + + if (lb_is_elem_const(fv->value, et)) { + continue; + } + + if (is_ast_range(fv->field)) { + ast_node(ie, BinaryExpr, fv->field); + TypeAndValue lo_tav = ie->left->tav; + TypeAndValue hi_tav = ie->right->tav; + GB_ASSERT(lo_tav.mode == Addressing_Constant); + GB_ASSERT(hi_tav.mode == Addressing_Constant); + + TokenKind op = ie->op.kind; + i64 lo = exact_value_to_i64(lo_tav.value); + i64 hi = exact_value_to_i64(hi_tav.value); + if (op == Token_Ellipsis) { + hi += 1; + } + + lbValue value = lb_emit_conv(p, lb_build_expr(p, fv->value), et); + + for (i64 k = lo; k < hi; k++) { + lbCompoundLitElemTempData data = {}; + data.value = value; + data.elem_index = cast(i32)k; + array_add(&temp_data, data); + } + + } else { + GB_ASSERT(fv->field->tav.mode == Addressing_Constant); + i64 index = exact_value_to_i64(fv->field->tav.value); + + lbValue field_expr = lb_build_expr(p, fv->value); + GB_ASSERT(!is_type_tuple(field_expr.type)); + + lbValue ev = lb_emit_conv(p, field_expr, et); + + lbCompoundLitElemTempData data = {}; + data.value = ev; + data.elem_index = cast(i32)index; + array_add(&temp_data, data); + } + } else { + if (lb_is_elem_const(elem, et)) { + continue; + } + lbValue field_expr = lb_build_expr(p, elem); + GB_ASSERT(!is_type_tuple(field_expr.type)); + + lbValue ev = lb_emit_conv(p, field_expr, et); + + lbCompoundLitElemTempData data = {}; + data.value = ev; + data.elem_index = cast(i32)i; + array_add(&temp_data, data); + } + } + + for_array(i, temp_data) { + temp_data[i].gep = lb_emit_ptr_offset(p, data, lb_const_int(p->module, t_int, temp_data[i].elem_index)); + } + + for_array(i, temp_data) { + lb_emit_store(p, temp_data[i].gep, temp_data[i].value); + } + + { + GB_ASSERT(lb_is_const(slice)); + unsigned indices[1] = {1}; + + lbValue count = {}; + count.type = t_int; + count.value = LLVMConstExtractValue(slice.value, indices, gb_count_of(indices)); + lb_fill_slice(p, v, data, count); + } + } + break; + } + + case Type_DynamicArray: { + if (cl->elems.count == 0) { + break; + } + Type *et = bt->DynamicArray.elem; + gbAllocator a = heap_allocator(); + lbValue size = lb_const_int(p->module, t_int, type_size_of(et)); + lbValue align = lb_const_int(p->module, t_int, type_align_of(et)); + + i64 item_count = gb_max(cl->max_count, cl->elems.count); + { + + auto args = array_make<lbValue>(a, 5); + args[0] = lb_emit_conv(p, lb_addr_get_ptr(p, v), t_rawptr); + args[1] = size; + args[2] = align; + args[3] = lb_const_int(p->module, t_int, 2*item_count); // TODO(bill): Is this too much waste? + args[4] = lb_emit_source_code_location(p, proc_name, pos); + lb_emit_runtime_call(p, "__dynamic_array_reserve", args); + } + + lbValue items = lb_generate_array(p->module, et, item_count, str_lit("dacl$"), cast(i64)cast(intptr)expr); + + for_array(i, cl->elems) { + Ast *elem = cl->elems[i]; + if (elem->kind == Ast_FieldValue) { + ast_node(fv, FieldValue, elem); + if (is_ast_range(fv->field)) { + ast_node(ie, BinaryExpr, fv->field); + TypeAndValue lo_tav = ie->left->tav; + TypeAndValue hi_tav = ie->right->tav; + GB_ASSERT(lo_tav.mode == Addressing_Constant); + GB_ASSERT(hi_tav.mode == Addressing_Constant); + + TokenKind op = ie->op.kind; + i64 lo = exact_value_to_i64(lo_tav.value); + i64 hi = exact_value_to_i64(hi_tav.value); + if (op == Token_Ellipsis) { + hi += 1; + } + + lbValue value = lb_emit_conv(p, lb_build_expr(p, fv->value), et); + + for (i64 k = lo; k < hi; k++) { + lbValue ep = lb_emit_array_epi(p, items, cast(i32)k); + lb_emit_store(p, ep, value); + } + } else { + GB_ASSERT(fv->field->tav.mode == Addressing_Constant); + + i64 field_index = exact_value_to_i64(fv->field->tav.value); + + lbValue ev = lb_build_expr(p, fv->value); + lbValue value = lb_emit_conv(p, ev, et); + lbValue ep = lb_emit_array_epi(p, items, cast(i32)field_index); + lb_emit_store(p, ep, value); + } + } else { + lbValue value = lb_emit_conv(p, lb_build_expr(p, elem), et); + lbValue ep = lb_emit_array_epi(p, items, cast(i32)i); + lb_emit_store(p, ep, value); + } + } + + { + auto args = array_make<lbValue>(a, 6); + args[0] = lb_emit_conv(p, v.addr, t_rawptr); + args[1] = size; + args[2] = align; + args[3] = lb_emit_conv(p, items, t_rawptr); + args[4] = lb_const_int(p->module, t_int, item_count); + args[5] = lb_emit_source_code_location(p, proc_name, pos); + lb_emit_runtime_call(p, "__dynamic_array_append", args); + } + break; + } + + case Type_Basic: { + GB_ASSERT(is_type_any(bt)); + if (cl->elems.count > 0) { + lb_addr_store(p, v, lb_const_value(p->module, type, exact_value_compound(expr))); + String field_names[2] = { + str_lit("data"), + str_lit("id"), + }; + Type *field_types[2] = { + t_rawptr, + t_typeid, + }; + + for_array(field_index, cl->elems) { + Ast *elem = cl->elems[field_index]; + + lbValue field_expr = {}; + isize index = field_index; + + if (elem->kind == Ast_FieldValue) { + ast_node(fv, FieldValue, elem); + Selection sel = lookup_field(bt, fv->field->Ident.token.string, false); + index = sel.index[0]; + elem = fv->value; + } else { + TypeAndValue tav = type_and_value_of_expr(elem); + Selection sel = lookup_field(bt, field_names[field_index], false); + index = sel.index[0]; + } + + field_expr = lb_build_expr(p, elem); + + GB_ASSERT(field_expr.type->kind != Type_Tuple); + + Type *ft = field_types[index]; + lbValue fv = lb_emit_conv(p, field_expr, ft); + lbValue gep = lb_emit_struct_ep(p, lb_addr_get_ptr(p, v), cast(i32)index); + lb_emit_store(p, gep, fv); + } + } + + break; + } + + case Type_BitSet: { + i64 sz = type_size_of(type); + if (cl->elems.count > 0 && sz > 0) { + lb_addr_store(p, v, lb_const_value(p->module, type, exact_value_compound(expr))); + + lbValue lower = lb_const_value(p->module, t_int, exact_value_i64(bt->BitSet.lower)); + for_array(i, cl->elems) { + Ast *elem = cl->elems[i]; + GB_ASSERT(elem->kind != Ast_FieldValue); + + if (lb_is_elem_const(elem, et)) { + continue; + } + + lbValue expr = lb_build_expr(p, elem); + GB_ASSERT(expr.type->kind != Type_Tuple); + + Type *it = bit_set_to_int(bt); + lbValue one = lb_const_value(p->module, it, exact_value_i64(1)); + lbValue e = lb_emit_conv(p, expr, it); + e = lb_emit_arith(p, Token_Sub, e, lower, it); + e = lb_emit_arith(p, Token_Shl, one, e, it); + + lbValue old_value = lb_emit_transmute(p, lb_addr_load(p, v), it); + lbValue new_value = lb_emit_arith(p, Token_Or, old_value, e, it); + new_value = lb_emit_transmute(p, new_value, type); + lb_addr_store(p, v, new_value); + } + } + break; + } + + } + + return v; + case_end; + + case_ast_node(tc, TypeCast, expr); + Type *type = type_of_expr(expr); + lbValue x = lb_build_expr(p, tc->expr); + lbValue e = {}; + switch (tc->token.kind) { + case Token_cast: + e = lb_emit_conv(p, x, type); + break; + case Token_transmute: + e = lb_emit_transmute(p, x, type); + break; + default: + GB_PANIC("Invalid AST TypeCast"); + } + lbAddr v = lb_add_local_generated(p, type, false); + lb_addr_store(p, v, e); + return v; + case_end; + + case_ast_node(ac, AutoCast, expr); + return lb_build_addr(p, ac->expr); + case_end; + } + + TokenPos token_pos = ast_token(expr).pos; + GB_PANIC("Unexpected address expression\n" + "\tAst: %.*s @ " + "%.*s(%td:%td)\n", + LIT(ast_strings[expr->kind]), + LIT(token_pos.file), token_pos.line, token_pos.column); + + + return {}; +} + +void lb_init_module(lbModule *m, Checker *c) { + m->info = &c->info; + + m->ctx = LLVMGetGlobalContext(); + m->mod = LLVMModuleCreateWithNameInContext("odin_module", m->ctx); + m->debug_builder = LLVMCreateDIBuilder(m->mod); + + gb_mutex_init(&m->mutex); + gbAllocator a = heap_allocator(); + map_init(&m->types, a); + map_init(&m->values, a); + map_init(&m->members, a); + map_init(&m->procedure_values, a); + map_init(&m->procedures, a); + map_init(&m->const_strings, a); + map_init(&m->anonymous_proc_lits, a); + array_init(&m->procedures_to_generate, a); + array_init(&m->foreign_library_paths, a); + + map_init(&m->debug_values, a); + +} + + +bool lb_init_generator(lbGenerator *gen, Checker *c) { + if (global_error_collector.count != 0) { + return false; + } + + isize tc = c->parser->total_token_count; + if (tc < 2) { + return false; + } + + + String init_fullpath = c->parser->init_fullpath; + + if (build_context.out_filepath.len == 0) { + gen->output_name = remove_directory_from_path(init_fullpath); + gen->output_name = remove_extension_from_path(gen->output_name); + gen->output_base = gen->output_name; + } else { + gen->output_name = build_context.out_filepath; + isize pos = string_extension_position(gen->output_name); + if (pos < 0) { + gen->output_base = gen->output_name; + } else { + gen->output_base = substring(gen->output_name, 0, pos); + } + } + gbAllocator ha = heap_allocator(); + array_init(&gen->output_object_paths, ha); + + gen->output_base = path_to_full_path(ha, gen->output_base); + + gbString output_file_path = gb_string_make_length(ha, gen->output_base.text, gen->output_base.len); + output_file_path = gb_string_appendc(output_file_path, ".obj"); + defer (gb_string_free(output_file_path)); + + gen->info = &c->info; + + lb_init_module(&gen->module, c); + + + return true; +} + +lbAddr lb_add_global_generated(lbModule *m, Type *type, lbValue value) { + GB_ASSERT(type != nullptr); + type = default_type(type); + + isize max_len = 7+8+1; + u8 *str = cast(u8 *)gb_alloc_array(heap_allocator(), u8, max_len); + isize len = gb_snprintf(cast(char *)str, max_len, "ggv$%x", m->global_generated_index); + m->global_generated_index++; + String name = make_string(str, len-1); + + Scope *scope = nullptr; + Entity *e = alloc_entity_variable(scope, make_token_ident(name), type); + lbValue g = {}; + g.type = alloc_type_pointer(type); + g.value = LLVMAddGlobal(m->mod, lb_type(m, type), cast(char const *)str); + if (value.value != nullptr) { + GB_ASSERT(LLVMIsConstant(value.value)); + LLVMSetInitializer(g.value, value.value); + } else { + LLVMSetInitializer(g.value, LLVMConstNull(lb_type(m, type))); + } + + lb_add_entity(m, e, g); + lb_add_member(m, name, g); + return lb_addr(g); +} + +lbValue lb_find_runtime_value(lbModule *m, String const &name) { + AstPackage *p = m->info->runtime_package; + Entity *e = scope_lookup_current(p->scope, name); + lbValue *found = map_get(&m->values, hash_entity(e)); + GB_ASSERT_MSG(found != nullptr, "Unable to find runtime value '%.*s'", LIT(name)); + lbValue value = *found; + return value; +} + +lbValue lb_get_type_info_ptr(lbModule *m, Type *type) { + i32 index = cast(i32)lb_type_info_index(m->info, type); + GB_ASSERT(index >= 0); + // gb_printf_err("%d %s\n", index, type_to_string(type)); + + LLVMValueRef indices[2] = { + LLVMConstInt(lb_type(m, t_int), 0, false), + LLVMConstInt(lb_type(m, t_int), index, false), + }; + + lbValue res = {}; + res.type = t_type_info_ptr; + res.value = LLVMConstGEP(lb_global_type_info_data.addr.value, indices, cast(unsigned)gb_count_of(indices)); + return res; +} + + +lbValue lb_type_info_member_types_offset(lbProcedure *p, isize count) { + lbValue offset = lb_emit_array_epi(p, lb_global_type_info_member_types.addr, lb_global_type_info_member_types_index); + lb_global_type_info_member_types_index += cast(i32)count; + return offset; +} +lbValue lb_type_info_member_names_offset(lbProcedure *p, isize count) { + lbValue offset = lb_emit_array_epi(p, lb_global_type_info_member_names.addr, lb_global_type_info_member_names_index); + lb_global_type_info_member_names_index += cast(i32)count; + return offset; +} +lbValue lb_type_info_member_offsets_offset(lbProcedure *p, isize count) { + lbValue offset = lb_emit_array_epi(p, lb_global_type_info_member_offsets.addr, lb_global_type_info_member_offsets_index); + lb_global_type_info_member_offsets_index += cast(i32)count; + return offset; +} +lbValue lb_type_info_member_usings_offset(lbProcedure *p, isize count) { + lbValue offset = lb_emit_array_epi(p, lb_global_type_info_member_usings.addr, lb_global_type_info_member_usings_index); + lb_global_type_info_member_usings_index += cast(i32)count; + return offset; +} +lbValue lb_type_info_member_tags_offset(lbProcedure *p, isize count) { + lbValue offset = lb_emit_array_epi(p, lb_global_type_info_member_tags.addr, lb_global_type_info_member_tags_index); + lb_global_type_info_member_tags_index += cast(i32)count; + return offset; +} + + +lbValue lb_generate_array(lbModule *m, Type *elem_type, i64 count, String prefix, i64 id) { + gbAllocator a = heap_allocator(); + Token token = {Token_Ident}; + isize name_len = prefix.len + 1 + 20; + + auto suffix_id = cast(unsigned long long)id; + char *text = gb_alloc_array(a, char, name_len+1); + gb_snprintf(text, name_len, + "%.*s-%llu", LIT(prefix), suffix_id); + text[name_len] = 0; + + String s = make_string_c(text); + + Type *t = alloc_type_array(elem_type, count); + lbValue g = {}; + g.value = LLVMAddGlobal(m->mod, lb_type(m, t), text); + g.type = alloc_type_pointer(t); + LLVMSetInitializer(g.value, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g.value, LLVMInternalLinkage); + map_set(&m->members, hash_string(s), g); + return g; +} + + + +void lb_setup_type_info_data(lbProcedure *p) { // NOTE(bill): Setup type_info data + lbModule *m = p->module; + LLVMContextRef ctx = m->ctx; + gbAllocator a = heap_allocator(); + CheckerInfo *info = m->info; + + { + // NOTE(bill): Set the type_table slice with the global backing array + lbValue global_type_table = lb_find_runtime_value(m, str_lit("type_table")); + Type *type = base_type(lb_addr_type(lb_global_type_info_data)); + GB_ASSERT(is_type_array(type)); + + LLVMValueRef indices[2] = {llvm_zero32(m), llvm_zero32(m)}; + LLVMValueRef values[2] = { + LLVMConstInBoundsGEP(lb_global_type_info_data.addr.value, indices, gb_count_of(indices)), + LLVMConstInt(lb_type(m, t_int), type->Array.count, true), + }; + LLVMValueRef slice = LLVMConstStructInContext(ctx, values, gb_count_of(values), false); + + LLVMSetInitializer(global_type_table.value, slice); + } + + + // Useful types + Type *t_i64_slice_ptr = alloc_type_pointer(alloc_type_slice(t_i64)); + Type *t_string_slice_ptr = alloc_type_pointer(alloc_type_slice(t_string)); + + i32 type_info_member_types_index = 0; + i32 type_info_member_names_index = 0; + i32 type_info_member_offsets_index = 0; + + for_array(type_info_type_index, info->type_info_types) { + Type *t = info->type_info_types[type_info_type_index]; + t = default_type(t); + if (t == t_invalid) { + continue; + } + + isize entry_index = lb_type_info_index(info, t, false); + if (entry_index <= 0) { + continue; + } + + lbValue tag = {}; + lbValue ti_ptr = lb_emit_array_epi(p, lb_global_type_info_data.addr, cast(i32)entry_index); + lbValue variant_ptr = lb_emit_struct_ep(p, ti_ptr, 3); + + lb_emit_store(p, lb_emit_struct_ep(p, ti_ptr, 0), lb_const_int(m, t_int, type_size_of(t))); + lb_emit_store(p, lb_emit_struct_ep(p, ti_ptr, 1), lb_const_int(m, t_int, type_align_of(t))); + lb_emit_store(p, lb_emit_struct_ep(p, ti_ptr, 2), lb_typeid(m, t)); + + + switch (t->kind) { + case Type_Named: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_named_ptr); + LLVMValueRef vals[2] = { + lb_const_string(p->module, t->Named.type_name->token.string).value, + lb_get_type_info_ptr(m, t->Named.base).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + + case Type_Basic: + switch (t->Basic.kind) { + case Basic_bool: + case Basic_b8: + case Basic_b16: + case Basic_b32: + case Basic_b64: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_boolean_ptr); + break; + + case Basic_i8: + case Basic_u8: + case Basic_i16: + case Basic_u16: + case Basic_i32: + case Basic_u32: + case Basic_i64: + case Basic_u64: + case Basic_i128: + case Basic_u128: + + case Basic_i16le: + case Basic_u16le: + case Basic_i32le: + case Basic_u32le: + case Basic_i64le: + case Basic_u64le: + case Basic_i128le: + case Basic_u128le: + case Basic_i16be: + case Basic_u16be: + case Basic_i32be: + case Basic_u32be: + case Basic_i64be: + case Basic_u64be: + case Basic_i128be: + case Basic_u128be: + + case Basic_int: + case Basic_uint: + case Basic_uintptr: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_integer_ptr); + + lbValue is_signed = lb_const_bool(m, t_bool, (t->Basic.flags & BasicFlag_Unsigned) == 0); + // NOTE(bill): This is matches the runtime layout + u8 endianness_value = 0; + if (t->Basic.flags & BasicFlag_EndianLittle) { + endianness_value = 1; + } else if (t->Basic.flags & BasicFlag_EndianBig) { + endianness_value = 2; + } + lbValue endianness = lb_const_int(m, t_u8, endianness_value); + + LLVMValueRef vals[2] = { + is_signed.value, + endianness.value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + + case Basic_rune: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_rune_ptr); + break; + + // case Basic_f16: + case Basic_f32: + case Basic_f64: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_float_ptr); + break; + + // case Basic_complex32: + case Basic_complex64: + case Basic_complex128: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_complex_ptr); + break; + + case Basic_quaternion128: + case Basic_quaternion256: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_quaternion_ptr); + break; + + case Basic_rawptr: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_pointer_ptr); + break; + + case Basic_string: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_string_ptr); + break; + + case Basic_cstring: + { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_string_ptr); + LLVMValueRef vals[1] = { + lb_const_bool(m, t_bool, true).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + break; + + case Basic_any: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_any_ptr); + break; + + case Basic_typeid: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_typeid_ptr); + break; + } + break; + + case Type_Pointer: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_pointer_ptr); + lbValue gep = lb_get_type_info_ptr(m, t->Pointer.elem); + + LLVMValueRef vals[1] = { + gep.value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + case Type_Array: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_array_ptr); + i64 ez = type_size_of(t->Array.elem); + + LLVMValueRef vals[3] = { + lb_get_type_info_ptr(m, t->Array.elem).value, + lb_const_int(m, t_int, ez).value, + lb_const_int(m, t_int, t->Array.count).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + case Type_EnumeratedArray: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_enumerated_array_ptr); + + LLVMValueRef vals[6] = { + lb_get_type_info_ptr(m, t->EnumeratedArray.elem).value, + lb_get_type_info_ptr(m, t->EnumeratedArray.index).value, + lb_const_int(m, t_int, type_size_of(t->EnumeratedArray.elem)).value, + lb_const_int(m, t_int, t->EnumeratedArray.count).value, + + // Unions + LLVMConstNull(lb_type(m, t_type_info_enum_value)), + LLVMConstNull(lb_type(m, t_type_info_enum_value)), + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + + // NOTE(bill): Union assignment + lbValue min_value = lb_emit_struct_ep(p, tag, 4); + lbValue max_value = lb_emit_struct_ep(p, tag, 5); + + lbValue min_v = lb_const_value(m, core_type(t->EnumeratedArray.index), t->EnumeratedArray.min_value); + lbValue max_v = lb_const_value(m, core_type(t->EnumeratedArray.index), t->EnumeratedArray.max_value); + + lb_emit_store_union_variant(p, min_value, min_v, min_v.type); + lb_emit_store_union_variant(p, max_value, max_v, max_v.type); + break; + } + case Type_DynamicArray: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_dynamic_array_ptr); + + LLVMValueRef vals[2] = { + lb_get_type_info_ptr(m, t->DynamicArray.elem).value, + lb_const_int(m, t_int, type_size_of(t->DynamicArray.elem)).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + case Type_Slice: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_slice_ptr); + + LLVMValueRef vals[2] = { + lb_get_type_info_ptr(m, t->Slice.elem).value, + lb_const_int(m, t_int, type_size_of(t->Slice.elem)).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + case Type_Proc: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_procedure_ptr); + + LLVMValueRef params = LLVMConstNull(lb_type(m, t_type_info_ptr)); + LLVMValueRef results = LLVMConstNull(lb_type(m, t_type_info_ptr)); + if (t->Proc.params != nullptr) { + params = lb_get_type_info_ptr(m, t->Proc.params).value; + } + if (t->Proc.results != nullptr) { + results = lb_get_type_info_ptr(m, t->Proc.results).value; + } + + LLVMValueRef vals[4] = { + params, + results, + lb_const_bool(m, t_bool, t->Proc.variadic).value, + lb_const_int(m, t_u8, t->Proc.calling_convention).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + case Type_Tuple: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_tuple_ptr); + + + lbValue memory_types = lb_type_info_member_types_offset(p, t->Tuple.variables.count); + lbValue memory_names = lb_type_info_member_names_offset(p, t->Tuple.variables.count); + + + for_array(i, t->Tuple.variables) { + // NOTE(bill): offset is not used for tuples + Entity *f = t->Tuple.variables[i]; + + lbValue index = lb_const_int(m, t_int, i); + lbValue type_info = lb_emit_ptr_offset(p, memory_types, index); + + // TODO(bill): Make this constant if possible, 'lb_const_store' does not work + lb_emit_store(p, type_info, lb_type_info(m, f->type)); + if (f->token.string.len > 0) { + lbValue name = lb_emit_ptr_offset(p, memory_names, index); + lb_emit_store(p, name, lb_const_string(m, f->token.string)); + } + } + + lbValue count = lb_const_int(m, t_int, t->Tuple.variables.count); + + LLVMValueRef types_slice = llvm_const_slice(memory_types, count); + LLVMValueRef names_slice = llvm_const_slice(memory_names, count); + + LLVMValueRef vals[2] = { + types_slice, + names_slice, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + + break; + } + + case Type_Enum: + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_enum_ptr); + + { + GB_ASSERT(t->Enum.base_type != nullptr); + GB_ASSERT(type_size_of(t_type_info_enum_value) == 16); + + + LLVMValueRef vals[3] = {}; + vals[0] = lb_type_info(m, t->Enum.base_type).value; + if (t->Enum.fields.count > 0) { + auto fields = t->Enum.fields; + lbValue name_array = lb_generate_array(m, t_string, fields.count, + str_lit("$enum_names"), cast(i64)entry_index); + lbValue value_array = lb_generate_array(m, t_type_info_enum_value, fields.count, + str_lit("$enum_values"), cast(i64)entry_index); + + + LLVMValueRef *name_values = gb_alloc_array(heap_allocator(), LLVMValueRef, fields.count); + LLVMValueRef *value_values = gb_alloc_array(heap_allocator(), LLVMValueRef, fields.count); + defer (gb_free(heap_allocator(), name_values)); + defer (gb_free(heap_allocator(), value_values)); + + GB_ASSERT(is_type_integer(t->Enum.base_type)); + + LLVMTypeRef align_type = lb_alignment_prefix_type_hack(m, type_align_of(t)); + LLVMTypeRef array_type = LLVMArrayType(lb_type(m, t_u8), 8); + LLVMTypeRef u64_type = lb_type(m, t_u64); + + for_array(i, fields) { + ExactValue value = fields[i]->Constant.value; + lbValue v = lb_const_value(m, t->Enum.base_type, value); + LLVMValueRef zv = LLVMConstZExt(v.value, u64_type); + lbValue tag = lb_const_union_tag(m, t_type_info_enum_value, v.type); + + LLVMValueRef vals[3] = { + LLVMConstNull(align_type), + zv, + tag.value, + }; + + name_values[i] = lb_const_string(m, fields[i]->token.string).value; + value_values[i] = LLVMConstStruct(vals, gb_count_of(vals), false); + } + + LLVMValueRef name_init = LLVMConstArray(lb_type(m, t_string), name_values, cast(unsigned)fields.count); + LLVMValueRef value_init = LLVMConstArray(lb_type(m, t_type_info_enum_value), value_values, cast(unsigned)fields.count); + LLVMSetInitializer(name_array.value, name_init); + LLVMSetInitializer(value_array.value, value_init); + + lbValue v_count = lb_const_int(m, t_int, fields.count); + + vals[1] = llvm_const_slice(lb_array_elem(p, name_array), v_count); + vals[2] = llvm_const_slice(lb_array_elem(p, value_array), v_count); + } else { + vals[1] = LLVMConstNull(lb_type(m, base_type(t_type_info_enum)->Struct.fields[1]->type)); + vals[2] = LLVMConstNull(lb_type(m, base_type(t_type_info_enum)->Struct.fields[2]->type)); + } + + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + break; + + case Type_Union: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_union_ptr); + + { + LLVMValueRef vals[6] = {}; + + isize variant_count = gb_max(0, t->Union.variants.count); + lbValue memory_types = lb_type_info_member_types_offset(p, variant_count); + + // NOTE(bill): Zeroth is nil so ignore it + for (isize variant_index = 0; variant_index < variant_count; variant_index++) { + Type *vt = t->Union.variants[variant_index]; + lbValue tip = lb_get_type_info_ptr(m, vt); + + lbValue index = lb_const_int(m, t_int, variant_index); + lbValue type_info = lb_emit_ptr_offset(p, memory_types, index); + lb_emit_store(p, type_info, lb_type_info(m, vt)); + } + + lbValue count = lb_const_int(m, t_int, variant_count); + vals[0] = llvm_const_slice(memory_types, count); + + i64 tag_size = union_tag_size(t); + i64 tag_offset = align_formula(t->Union.variant_block_size, tag_size); + + if (tag_size > 0) { + vals[1] = lb_const_int(m, t_uintptr, tag_offset).value; + vals[2] = lb_type_info(m, union_tag_type(t)).value; + } else { + vals[1] = lb_const_int(m, t_uintptr, 0).value; + vals[2] = LLVMConstNull(lb_type(m, t_type_info_ptr)); + } + + vals[3] = lb_const_bool(m, t_bool, t->Union.custom_align != 0).value; + vals[4] = lb_const_bool(m, t_bool, t->Union.no_nil).value; + vals[5] = lb_const_bool(m, t_bool, t->Union.maybe).value; + + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + + break; + } + + case Type_Struct: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_struct_ptr); + + LLVMValueRef vals[11] = {}; + + + { + lbValue is_packed = lb_const_bool(m, t_bool, t->Struct.is_packed); + lbValue is_raw_union = lb_const_bool(m, t_bool, t->Struct.is_raw_union); + lbValue is_custom_align = lb_const_bool(m, t_bool, t->Struct.custom_align != 0); + vals[5] = is_packed.value; + vals[6] = is_raw_union.value; + vals[7] = is_custom_align.value; + + if (t->Struct.soa_kind != StructSoa_None) { + lbValue kind = lb_emit_struct_ep(p, tag, 8); + Type *kind_type = type_deref(kind.type); + + lbValue soa_kind = lb_const_value(m, kind_type, exact_value_i64(t->Struct.soa_kind)); + lbValue soa_type = lb_type_info(m, t->Struct.soa_elem); + lbValue soa_len = lb_const_int(m, t_int, t->Struct.soa_count); + + vals[8] = soa_kind.value; + vals[9] = soa_type.value; + vals[10] = soa_len.value; + } + } + + isize count = t->Struct.fields.count; + if (count > 0) { + lbValue memory_types = lb_type_info_member_types_offset (p, count); + lbValue memory_names = lb_type_info_member_names_offset (p, count); + lbValue memory_offsets = lb_type_info_member_offsets_offset(p, count); + lbValue memory_usings = lb_type_info_member_usings_offset (p, count); + lbValue memory_tags = lb_type_info_member_tags_offset (p, count); + + type_set_offsets(t); // NOTE(bill): Just incase the offsets have not been set yet + for (isize source_index = 0; source_index < count; source_index++) { + // TODO(bill): Order fields in source order not layout order + Entity *f = t->Struct.fields[source_index]; + lbValue tip = lb_get_type_info_ptr(m, f->type); + i64 foffset = 0; + if (!t->Struct.is_raw_union) { + foffset = t->Struct.offsets[f->Variable.field_index]; + } + GB_ASSERT(f->kind == Entity_Variable && f->flags & EntityFlag_Field); + + lbValue index = lb_const_int(m, t_int, source_index); + lbValue type_info = lb_emit_ptr_offset(p, memory_types, index); + lbValue offset = lb_emit_ptr_offset(p, memory_offsets, index); + lbValue is_using = lb_emit_ptr_offset(p, memory_usings, index); + + lb_emit_store(p, type_info, lb_type_info(m, f->type)); + if (f->token.string.len > 0) { + lbValue name = lb_emit_ptr_offset(p, memory_names, index); + lb_emit_store(p, name, lb_const_string(m, f->token.string)); + } + lb_emit_store(p, offset, lb_const_int(m, t_uintptr, foffset)); + lb_emit_store(p, is_using, lb_const_bool(m, t_bool, (f->flags&EntityFlag_Using) != 0)); + + if (t->Struct.tags.count > 0) { + String tag_string = t->Struct.tags[source_index]; + if (tag_string.len > 0) { + lbValue tag_ptr = lb_emit_ptr_offset(p, memory_tags, index); + lb_emit_store(p, tag_ptr, lb_const_string(m, tag_string)); + } + } + + } + + lbValue cv = lb_const_int(m, t_int, count); + vals[0] = llvm_const_slice(memory_types, cv); + vals[1] = llvm_const_slice(memory_names, cv); + vals[2] = llvm_const_slice(memory_offsets, cv); + vals[3] = llvm_const_slice(memory_usings, cv); + vals[4] = llvm_const_slice(memory_tags, cv); + } + for (isize i = 0; i < gb_count_of(vals); i++) { + if (vals[i] == nullptr) { + vals[i] = LLVMConstNull(lb_type(m, get_struct_field_type(tag.type, i))); + } + } + + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + + break; + } + + case Type_Map: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_map_ptr); + init_map_internal_types(t); + + LLVMValueRef vals[3] = { + lb_get_type_info_ptr(m, t->Map.key).value, + lb_get_type_info_ptr(m, t->Map.value).value, + lb_get_type_info_ptr(m, t->Map.generated_struct_type).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + break; + } + + case Type_BitField: { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_bit_field_ptr); + // names: []string; + // bits: []u32; + // offsets: []u32; + isize count = t->BitField.fields.count; + if (count > 0) { + auto fields = t->BitField.fields; + lbValue name_array = lb_generate_array(m, t_string, count, str_lit("$bit_field_names"), cast(i64)entry_index); + lbValue bit_array = lb_generate_array(m, t_i32, count, str_lit("$bit_field_bits"), cast(i64)entry_index); + lbValue offset_array = lb_generate_array(m, t_i32, count, str_lit("$bit_field_offsets"), cast(i64)entry_index); + + for (isize i = 0; i < count; i++) { + Entity *f = fields[i]; + GB_ASSERT(f->type != nullptr); + GB_ASSERT(f->type->kind == Type_BitFieldValue); + lbValue name_ep = lb_emit_array_epi(p, name_array, cast(i32)i); + lbValue bit_ep = lb_emit_array_epi(p, bit_array, cast(i32)i); + lbValue offset_ep = lb_emit_array_epi(p, offset_array, cast(i32)i); + + lb_emit_store(p, name_ep, lb_const_string(m, f->token.string)); + lb_emit_store(p, bit_ep, lb_const_int(m, t_i32, f->type->BitFieldValue.bits)); + lb_emit_store(p, offset_ep, lb_const_int(m, t_i32, t->BitField.offsets[i])); + + } + + lbValue v_count = lb_const_int(m, t_int, count); + lbValue name_array_elem = lb_array_elem(p, name_array); + lbValue bit_array_elem = lb_array_elem(p, bit_array); + lbValue offset_array_elem = lb_array_elem(p, offset_array); + + + LLVMValueRef vals[3] = { + llvm_const_slice(name_array_elem, v_count), + llvm_const_slice(bit_array_elem, v_count), + llvm_const_slice(offset_array_elem, v_count), + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + break; + } + + case Type_BitSet: + { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_bit_set_ptr); + + GB_ASSERT(is_type_typed(t->BitSet.elem)); + + + LLVMValueRef vals[4] = { + lb_get_type_info_ptr(m, t->BitSet.elem).value, + LLVMConstNull(lb_type(m, t_type_info_ptr)), + lb_const_int(m, t_i64, t->BitSet.lower).value, + lb_const_int(m, t_i64, t->BitSet.upper).value, + }; + if (t->BitSet.underlying != nullptr) { + vals[1] =lb_get_type_info_ptr(m, t->BitSet.underlying).value; + } + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + break; + + case Type_Opaque: + { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_opaque_ptr); + LLVMValueRef vals[1] = { + lb_get_type_info_ptr(m, t->Opaque.elem).value, + }; + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + break; + case Type_SimdVector: + { + tag = lb_const_ptr_cast(m, variant_ptr, t_type_info_simd_vector_ptr); + + LLVMValueRef vals[4] = {}; + + if (t->SimdVector.is_x86_mmx) { + vals[3] = lb_const_bool(m, t_bool, true).value; + } else { + vals[0] = lb_get_type_info_ptr(m, t->SimdVector.elem).value; + vals[1] = lb_const_int(m, t_int, type_size_of(t->SimdVector.elem)).value; + vals[2] = lb_const_int(m, t_int, t->SimdVector.count).value; + } + + lbValue res = {}; + res.type = type_deref(tag.type); + res.value = LLVMConstNamedStruct(lb_type(m, res.type), vals, gb_count_of(vals)); + lb_emit_store(p, tag, res); + } + break; + } + + + if (tag.value != nullptr) { + Type *tag_type = type_deref(tag.type); + GB_ASSERT(is_type_named(tag_type)); + // lb_emit_store_union_variant(p, variant_ptr, lb_emit_load(p, tag), tag_type); + lb_emit_store_union_variant_tag(p, variant_ptr, tag_type); + } else { + if (t != t_llvm_bool) { + GB_PANIC("Unhandled Type_Info variant: %s", type_to_string(t)); + } + } + } +} + + +void lb_generate_code(lbGenerator *gen) { + #define TIME_SECTION(str) do { if (build_context.show_more_timings) timings_start_section(&global_timings, str_lit(str)); } while (0) + + TIME_SECTION("LLVM Initializtion"); + + lbModule *m = &gen->module; + LLVMModuleRef mod = gen->module.mod; + CheckerInfo *info = gen->info; + + Arena temp_arena = {}; + arena_init(&temp_arena, heap_allocator()); + gbAllocator temp_allocator = arena_allocator(&temp_arena); + + gen->module.global_default_context = lb_add_global_generated(m, t_context, {}); + gen->module.global_default_context.kind = lbAddr_Context; + + auto *min_dep_set = &info->minimum_dependency_set; + + + LLVMInitializeAllTargetInfos(); + LLVMInitializeAllTargets(); + LLVMInitializeAllTargetMCs(); + LLVMInitializeAllAsmPrinters(); + LLVMInitializeAllAsmParsers(); + LLVMInitializeAllDisassemblers(); + LLVMInitializeNativeTarget(); + + + char const *target_triple = "x86_64-pc-windows-msvc"; + char const *target_data_layout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"; + LLVMSetTarget(mod, target_triple); + + LLVMTargetRef target = {}; + char *llvm_error = nullptr; + LLVMGetTargetFromTriple(target_triple, &target, &llvm_error); + GB_ASSERT(target != nullptr); + + TIME_SECTION("LLVM Create Target Machine"); + + LLVMTargetMachineRef target_machine = LLVMCreateTargetMachine(target, target_triple, "generic", "", LLVMCodeGenLevelNone, LLVMRelocDefault, LLVMCodeModelDefault); + defer (LLVMDisposeTargetMachine(target_machine)); + + LLVMSetModuleDataLayout(mod, LLVMCreateTargetDataLayout(target_machine)); + + { // Debug Info + for_array(i, info->files.entries) { + AstFile *f = info->files.entries[i].value; + String fullpath = f->fullpath; + String filename = filename_from_path(fullpath); + String directory = directory_from_path(fullpath); + LLVMMetadataRef res = LLVMDIBuilderCreateFile(m->debug_builder, + cast(char const *)filename.text, filename.len, + cast(char const *)directory.text, directory.len); + map_set(&m->debug_values, hash_pointer(f), res); + f->llvm_metadata = res; + } + + m->debug_compile_unit = LLVMDIBuilderCreateCompileUnit(m->debug_builder, LLVMDWARFSourceLanguageC, + cast(LLVMMetadataRef)m->info->files.entries[0].value->llvm_metadata, + "odin", 4, + false, "", 0, + 1, "", 0, + LLVMDWARFEmissionFull, 0, true, + true + ); + } + + TIME_SECTION("LLVM Global Variables"); + + { + { // Add type info data + isize max_type_info_count = info->minimum_dependency_type_info_set.entries.count+1; + // gb_printf_err("max_type_info_count: %td\n", max_type_info_count); + Type *t = alloc_type_array(t_type_info, max_type_info_count); + LLVMValueRef g = LLVMAddGlobal(mod, lb_type(m, t), LB_TYPE_INFO_DATA_NAME); + LLVMSetInitializer(g, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g, LLVMInternalLinkage); + + lbValue value = {}; + value.value = g; + value.type = alloc_type_pointer(t); + lb_global_type_info_data = lb_addr(value); + } + { // Type info member buffer + // NOTE(bill): Removes need for heap allocation by making it global memory + isize count = 0; + + for_array(entry_index, m->info->type_info_types) { + Type *t = m->info->type_info_types[entry_index]; + + isize index = lb_type_info_index(m->info, t, false); + if (index < 0) { + continue; + } + + switch (t->kind) { + case Type_Union: + count += t->Union.variants.count; + break; + case Type_Struct: + count += t->Struct.fields.count; + break; + case Type_Tuple: + count += t->Tuple.variables.count; + break; + } + } + + if (count > 0) { + { + char const *name = LB_TYPE_INFO_TYPES_NAME; + Type *t = alloc_type_array(t_type_info_ptr, count); + LLVMValueRef g = LLVMAddGlobal(mod, lb_type(m, t), name); + LLVMSetInitializer(g, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g, LLVMInternalLinkage); + lb_global_type_info_member_types = lb_addr({g, alloc_type_pointer(t)}); + + } + { + char const *name = LB_TYPE_INFO_NAMES_NAME; + Type *t = alloc_type_array(t_string, count); + LLVMValueRef g = LLVMAddGlobal(mod, lb_type(m, t), name); + LLVMSetInitializer(g, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g, LLVMInternalLinkage); + lb_global_type_info_member_names = lb_addr({g, alloc_type_pointer(t)}); + } + { + char const *name = LB_TYPE_INFO_OFFSETS_NAME; + Type *t = alloc_type_array(t_uintptr, count); + LLVMValueRef g = LLVMAddGlobal(mod, lb_type(m, t), name); + LLVMSetInitializer(g, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g, LLVMInternalLinkage); + lb_global_type_info_member_offsets = lb_addr({g, alloc_type_pointer(t)}); + } + + { + char const *name = LB_TYPE_INFO_USINGS_NAME; + Type *t = alloc_type_array(t_bool, count); + LLVMValueRef g = LLVMAddGlobal(mod, lb_type(m, t), name); + LLVMSetInitializer(g, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g, LLVMInternalLinkage); + lb_global_type_info_member_usings = lb_addr({g, alloc_type_pointer(t)}); + } + + { + char const *name = LB_TYPE_INFO_TAGS_NAME; + Type *t = alloc_type_array(t_string, count); + LLVMValueRef g = LLVMAddGlobal(mod, lb_type(m, t), name); + LLVMSetInitializer(g, LLVMConstNull(lb_type(m, t))); + LLVMSetLinkage(g, LLVMInternalLinkage); + lb_global_type_info_member_tags = lb_addr({g, alloc_type_pointer(t)}); + } + } + } + } + + + isize global_variable_max_count = 0; + Entity *entry_point = info->entry_point; + bool has_dll_main = false; + bool has_win_main = false; + + for_array(i, info->entities) { + Entity *e = info->entities[i]; + String name = e->token.string; + + bool is_global = e->pkg != nullptr; + + if (e->kind == Entity_Variable) { + global_variable_max_count++; + } else if (e->kind == Entity_Procedure && !is_global) { + if ((e->scope->flags&ScopeFlag_Init) && name == "main") { + GB_ASSERT(e == entry_point); + // entry_point = e; + } + if (e->Procedure.is_export || + (e->Procedure.link_name.len > 0) || + ((e->scope->flags&ScopeFlag_File) && e->Procedure.link_name.len > 0)) { + if (!has_dll_main && name == "DllMain") { + has_dll_main = true; + } else if (!has_win_main && name == "WinMain") { + has_win_main = true; + } + } + } + } + + struct GlobalVariable { + lbValue var; + lbValue init; + DeclInfo *decl; + }; + auto global_variables = array_make<GlobalVariable>(heap_allocator(), 0, global_variable_max_count); + + for_array(i, info->variable_init_order) { + DeclInfo *d = info->variable_init_order[i]; + + Entity *e = d->entity; + + if ((e->scope->flags & ScopeFlag_File) == 0) { + continue; + } + + if (!ptr_set_exists(min_dep_set, e)) { + continue; + } + DeclInfo *decl = decl_info_of_entity(e); + if (decl == nullptr) { + continue; + } + GB_ASSERT(e->kind == Entity_Variable); + + bool is_foreign = e->Variable.is_foreign; + bool is_export = e->Variable.is_export; + + String name = lb_get_entity_name(m, e); + + + lbValue g = {}; + g.value = LLVMAddGlobal(m->mod, lb_type(m, e->type), alloc_cstring(heap_allocator(), name)); + g.type = alloc_type_pointer(e->type); + if (e->Variable.thread_local_model != "") { + LLVMSetThreadLocal(g.value, true); + + String m = e->Variable.thread_local_model; + LLVMThreadLocalMode mode = LLVMGeneralDynamicTLSModel; + if (m == "default") { + mode = LLVMGeneralDynamicTLSModel; + } else if (m == "localdynamic") { + mode = LLVMLocalDynamicTLSModel; + } else if (m == "initialexec") { + mode = LLVMInitialExecTLSModel; + } else if (m == "localexec") { + mode = LLVMLocalExecTLSModel; + } else { + GB_PANIC("Unhandled thread local mode %.*s", LIT(m)); + } + LLVMSetThreadLocalMode(g.value, mode); + } + if (is_foreign) { + LLVMSetExternallyInitialized(g.value, true); + } else { + LLVMSetInitializer(g.value, LLVMConstNull(lb_type(m, e->type))); + } + if (is_export) { + LLVMSetLinkage(g.value, LLVMDLLExportLinkage); + } + + GlobalVariable var = {}; + var.var = g; + var.decl = decl; + + if (decl->init_expr != nullptr && !is_type_any(e->type)) { + TypeAndValue tav = type_and_value_of_expr(decl->init_expr); + if (tav.mode != Addressing_Invalid) { + if (tav.value.kind != ExactValue_Invalid) { + ExactValue v = tav.value; + lbValue init = lb_const_value(m, tav.type, v); + LLVMSetInitializer(g.value, init.value); + } + } + } + + array_add(&global_variables, var); + + lb_add_entity(m, e, g); + lb_add_member(m, name, g); + } + + + TIME_SECTION("LLVM Global Procedures and Types"); + for_array(i, info->entities) { + // arena_free_all(&temp_arena); + // gbAllocator a = temp_allocator; + + Entity *e = info->entities[i]; + String name = e->token.string; + DeclInfo *decl = e->decl_info; + Scope * scope = e->scope; + + if ((scope->flags & ScopeFlag_File) == 0) { + continue; + } + + Scope *package_scope = scope->parent; + GB_ASSERT(package_scope->flags & ScopeFlag_Pkg); + + switch (e->kind) { + case Entity_Variable: + // NOTE(bill): Handled above as it requires a specific load order + continue; + case Entity_ProcGroup: + continue; + + case Entity_TypeName: + case Entity_Procedure: + break; + } + + bool polymorphic_struct = false; + if (e->type != nullptr && e->kind == Entity_TypeName) { + Type *bt = base_type(e->type); + if (bt->kind == Type_Struct) { + polymorphic_struct = is_type_polymorphic(bt); + } + } + + if (!polymorphic_struct && !ptr_set_exists(min_dep_set, e)) { + // NOTE(bill): Nothing depends upon it so doesn't need to be built + continue; + } + + + String mangled_name = lb_get_entity_name(m, e); + + switch (e->kind) { + case Entity_TypeName: + lb_type(m, e->type); + break; + case Entity_Procedure: + { + lbProcedure *p = lb_create_procedure(m, e); + array_add(&m->procedures_to_generate, p); + } + break; + } + } + + TIME_SECTION("LLVM Procedure Generation"); + for_array(i, m->procedures_to_generate) { + lbProcedure *p = m->procedures_to_generate[i]; + if (p->is_done) { + continue; + } + if (p->body != nullptr) { // Build Procedure + lb_begin_procedure_body(p); + lb_build_stmt(p, p->body); + lb_end_procedure_body(p); + p->is_done = true; + } + lb_end_procedure(p); + + // Add Flags + if (p->body != nullptr) { + if (p->name == "memcpy" || p->name == "memmove" || + p->name == "runtime.mem_copy" || p->name == "mem_copy_non_overlapping" || + string_starts_with(p->name, str_lit("llvm.memcpy")) || + string_starts_with(p->name, str_lit("llvm.memmove"))) { + p->flags |= lbProcedureFlag_WithoutMemcpyPass; + } + } + + if (LLVMVerifyFunction(p->value, LLVMReturnStatusAction)) { + gb_printf_err("LLVM CODE GEN FAILED FOR PROCEDURE: %.*s\n", LIT(p->name)); + LLVMDumpValue(p->value); + gb_printf_err("\n\n\n\n"); + LLVMVerifyFunction(p->value, LLVMAbortProcessAction); + } + } + + + TIME_SECTION("LLVM Function Pass"); + + LLVMPassRegistryRef pass_registry = LLVMGetGlobalPassRegistry(); + + LLVMPassManagerRef default_function_pass_manager = LLVMCreateFunctionPassManagerForModule(mod); + defer (LLVMDisposePassManager(default_function_pass_manager)); + { + LLVMAddMemCpyOptPass(default_function_pass_manager); + LLVMAddPromoteMemoryToRegisterPass(default_function_pass_manager); + LLVMAddMergedLoadStoreMotionPass(default_function_pass_manager); + LLVMAddAggressiveInstCombinerPass(default_function_pass_manager); + LLVMAddConstantPropagationPass(default_function_pass_manager); + LLVMAddAggressiveDCEPass(default_function_pass_manager); + LLVMAddMergedLoadStoreMotionPass(default_function_pass_manager); + LLVMAddPromoteMemoryToRegisterPass(default_function_pass_manager); + // LLVMAddUnifyFunctionExitNodesPass(default_function_pass_manager); + } + + LLVMPassManagerRef default_function_pass_manager_without_memcpy = LLVMCreateFunctionPassManagerForModule(mod); + defer (LLVMDisposePassManager(default_function_pass_manager_without_memcpy)); + { + LLVMAddPromoteMemoryToRegisterPass(default_function_pass_manager_without_memcpy); + LLVMAddMergedLoadStoreMotionPass(default_function_pass_manager_without_memcpy); + LLVMAddAggressiveInstCombinerPass(default_function_pass_manager_without_memcpy); + LLVMAddConstantPropagationPass(default_function_pass_manager_without_memcpy); + LLVMAddAggressiveDCEPass(default_function_pass_manager_without_memcpy); + LLVMAddMergedLoadStoreMotionPass(default_function_pass_manager_without_memcpy); + LLVMAddPromoteMemoryToRegisterPass(default_function_pass_manager_without_memcpy); + // LLVMAddUnifyFunctionExitNodesPass(default_function_pass_manager_without_memcpy); + } + + for_array(i, m->procedures_to_generate) { + lbProcedure *p = m->procedures_to_generate[i]; + if (p->body != nullptr) { // Build Procedure + if (p->flags & lbProcedureFlag_WithoutMemcpyPass) { + LLVMRunFunctionPassManager(default_function_pass_manager_without_memcpy, p->value); + } else { + LLVMRunFunctionPassManager(default_function_pass_manager, p->value); + } + } + } + + TIME_SECTION("LLVM Runtime Creation"); + + lbProcedure *startup_type_info = nullptr; + lbProcedure *startup_context = nullptr; + lbProcedure *startup_runtime = nullptr; + { // Startup Type Info + Type *params = alloc_type_tuple(); + Type *results = alloc_type_tuple(); + + Type *proc_type = alloc_type_proc(nullptr, nullptr, 0, nullptr, 0, false, ProcCC_CDecl); + + lbProcedure *p = lb_create_dummy_procedure(m, str_lit(LB_STARTUP_TYPE_INFO_PROC_NAME), proc_type); + p->is_startup = true; + startup_type_info = p; + + lb_begin_procedure_body(p); + + lb_setup_type_info_data(p); + + lb_end_procedure_body(p); + + if (LLVMVerifyFunction(p->value, LLVMReturnStatusAction)) { + gb_printf_err("LLVM CODE GEN FAILED FOR PROCEDURE: %s\n", "main"); + LLVMDumpValue(p->value); + gb_printf_err("\n\n\n\n"); + LLVMVerifyFunction(p->value, LLVMAbortProcessAction); + } + + LLVMRunFunctionPassManager(default_function_pass_manager, p->value); + } + { // Startup Context + Type *params = alloc_type_tuple(); + Type *results = alloc_type_tuple(); + + Type *proc_type = alloc_type_proc(nullptr, nullptr, 0, nullptr, 0, false, ProcCC_CDecl); + + lbProcedure *p = lb_create_dummy_procedure(m, str_lit(LB_STARTUP_CONTEXT_PROC_NAME), proc_type); + p->is_startup = true; + startup_context = p; + + lb_begin_procedure_body(p); + + lb_emit_init_context(p, p->module->global_default_context); + + lb_end_procedure_body(p); + + if (LLVMVerifyFunction(p->value, LLVMReturnStatusAction)) { + gb_printf_err("LLVM CODE GEN FAILED FOR PROCEDURE: %s\n", "main"); + LLVMDumpValue(p->value); + gb_printf_err("\n\n\n\n"); + LLVMVerifyFunction(p->value, LLVMAbortProcessAction); + } + + LLVMRunFunctionPassManager(default_function_pass_manager, p->value); + } + { // Startup Runtime + Type *params = alloc_type_tuple(); + Type *results = alloc_type_tuple(); + + Type *proc_type = alloc_type_proc(nullptr, nullptr, 0, nullptr, 0, false, ProcCC_CDecl); + + lbProcedure *p = lb_create_dummy_procedure(m, str_lit(LB_STARTUP_RUNTIME_PROC_NAME), proc_type); + p->is_startup = true; + startup_runtime = p; + + lb_begin_procedure_body(p); + + for_array(i, global_variables) { + auto *var = &global_variables[i]; + if (var->decl->init_expr != nullptr) { + var->init = lb_build_expr(p, var->decl->init_expr); + } + + Entity *e = var->decl->entity; + GB_ASSERT(e->kind == Entity_Variable); + + if (e->Variable.is_foreign) { + Entity *fl = e->Procedure.foreign_library; + lb_add_foreign_library_path(m, fl); + } + + if (e->flags & EntityFlag_Static) { + LLVMSetLinkage(var->var.value, LLVMInternalLinkage); + } + + if (var->init.value != nullptr) { + Type *t = type_deref(var->var.type); + + if (is_type_any(t)) { + // NOTE(bill): Edge case for 'any' type + Type *var_type = default_type(var->init.type); + lbAddr g = lb_add_global_generated(m, var_type, var->init); + lb_addr_store(p, g, var->init); + lbValue gp = lb_addr_get_ptr(p, g); + + lbValue data = lb_emit_struct_ep(p, var->var, 0); + lbValue ti = lb_emit_struct_ep(p, var->var, 1); + lb_emit_store(p, data, lb_emit_conv(p, gp, t_rawptr)); + lb_emit_store(p, ti, lb_type_info(m, var_type)); + } else { + lb_emit_store(p, var->var, lb_emit_conv(p, var->init, t)); + } + } + } + + + lb_end_procedure_body(p); + + if (LLVMVerifyFunction(p->value, LLVMReturnStatusAction)) { + gb_printf_err("LLVM CODE GEN FAILED FOR PROCEDURE: %s\n", "main"); + LLVMDumpValue(p->value); + gb_printf_err("\n\n\n\n"); + LLVMVerifyFunction(p->value, LLVMAbortProcessAction); + } + + LLVMRunFunctionPassManager(default_function_pass_manager, p->value); + + /*{ + LLVMValueRef last_instr = LLVMGetLastInstruction(p->decl_block->block); + for (LLVMValueRef instr = LLVMGetFirstInstruction(p->decl_block->block); + instr != last_instr; + instr = LLVMGetNextInstruction(instr)) { + if (LLVMIsAAllocaInst(instr)) { + LLVMTypeRef type = LLVMGetAllocatedType(instr); + LLVMValueRef sz_val = LLVMSizeOf(type); + GB_ASSERT(LLVMIsConstant(sz_val)); + gb_printf_err(">> 0x%p\n", sz_val); + LLVMTypeRef sz_type = LLVMTypeOf(sz_val); + gb_printf_err(">> %s\n", LLVMPrintTypeToString(sz_type)); + unsigned long long sz = LLVMConstIntGetZExtValue(sz_val); + // long long sz = LLVMConstIntGetSExtValue(sz_val); + gb_printf_err(">> %ll\n", sz); + } + } + }*/ + } + + if (!(build_context.is_dll && !has_dll_main)) { + Type *params = alloc_type_tuple(); + Type *results = alloc_type_tuple(); + + array_init(¶ms->Tuple.variables, heap_allocator(), 2); + params->Tuple.variables[0] = alloc_entity_param(nullptr, make_token_ident("argc"), t_i32, false, true); + params->Tuple.variables[1] = alloc_entity_param(nullptr, make_token_ident("argv"), alloc_type_pointer(t_cstring), false, true); + + array_init(&results->Tuple.variables, heap_allocator(), 1); + results->Tuple.variables[0] = alloc_entity_param(nullptr, make_token_ident("_"), t_i32, false, true); + + Type *proc_type = alloc_type_proc(nullptr, params, 2, results, 1, false, ProcCC_CDecl); + + lbProcedure *p = lb_create_dummy_procedure(m, str_lit("main"), proc_type); + p->is_startup = true; + + lb_begin_procedure_body(p); + + lbValue *found = map_get(&m->values, hash_entity(entry_point)); + GB_ASSERT(found != nullptr); + + LLVMBuildCall2(p->builder, LLVMGetElementType(lb_type(m, startup_type_info->type)), startup_type_info->value, nullptr, 0, ""); + LLVMBuildCall2(p->builder, LLVMGetElementType(lb_type(m, startup_context->type)), startup_context->value, nullptr, 0, ""); + LLVMBuildCall2(p->builder, LLVMGetElementType(lb_type(m, startup_runtime->type)), startup_runtime->value, nullptr, 0, ""); + LLVMBuildCall2(p->builder, LLVMGetElementType(lb_type(m, found->type)), found->value, nullptr, 0, ""); + LLVMBuildRet(p->builder, LLVMConstInt(lb_type(m, t_i32), 0, false)); + + lb_end_procedure_body(p); + + if (LLVMVerifyFunction(p->value, LLVMReturnStatusAction)) { + gb_printf_err("LLVM CODE GEN FAILED FOR PROCEDURE: %s\n", "main"); + LLVMDumpValue(p->value); + gb_printf_err("\n\n\n\n"); + LLVMVerifyFunction(p->value, LLVMAbortProcessAction); + } + + LLVMRunFunctionPassManager(default_function_pass_manager, p->value); + } + + + TIME_SECTION("LLVM Module Pass"); + + LLVMPassManagerRef module_pass_manager = LLVMCreatePassManager(); + defer (LLVMDisposePassManager(module_pass_manager)); + LLVMAddAlwaysInlinerPass(module_pass_manager); + LLVMAddStripDeadPrototypesPass(module_pass_manager); + // LLVMAddConstantMergePass(module_pass_manager); + + LLVMPassManagerBuilderRef pass_manager_builder = LLVMPassManagerBuilderCreate(); + defer (LLVMPassManagerBuilderDispose(pass_manager_builder)); + LLVMPassManagerBuilderSetOptLevel(pass_manager_builder, build_context.optimization_level); + LLVMPassManagerBuilderSetSizeLevel(pass_manager_builder, build_context.optimization_level); + + LLVMPassManagerBuilderPopulateLTOPassManager(pass_manager_builder, module_pass_manager, false, false); + LLVMRunPassManager(module_pass_manager, mod); + + llvm_error = nullptr; + defer (LLVMDisposeMessage(llvm_error)); + + String filepath_ll = concatenate_strings(heap_allocator(), gen->output_base, STR_LIT(".ll")); + defer (gb_free(heap_allocator(), filepath_ll.text)); + + String filepath_obj = concatenate_strings(heap_allocator(), gen->output_base, STR_LIT(".obj")); + + + if (build_context.keep_temp_files) { + TIME_SECTION("LLVM Print Module to File"); + LLVMPrintModuleToFile(mod, cast(char const *)filepath_ll.text, &llvm_error); + // exit(1); + } + LLVMDIBuilderFinalize(m->debug_builder); + LLVMVerifyModule(mod, LLVMAbortProcessAction, &llvm_error); + llvm_error = nullptr; + + TIME_SECTION("LLVM Object Generation"); + + LLVMBool was_an_error = LLVMTargetMachineEmitToFile(target_machine, mod, cast(char *)filepath_obj.text, LLVMObjectFile, &llvm_error); + if (was_an_error) { + gb_printf_err("LLVM Error: %s\n", llvm_error); + gb_exit(1); + return; + } + + array_add(&gen->output_object_paths, filepath_obj); + +#undef TIME_SECTION +} |