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-rw-r--r--src/llvm_abi.cpp34
-rw-r--r--src/llvm_backend_const.cpp192
2 files changed, 72 insertions, 154 deletions
diff --git a/src/llvm_abi.cpp b/src/llvm_abi.cpp
index 8dbb8fa76..9f2faaa08 100644
--- a/src/llvm_abi.cpp
+++ b/src/llvm_abi.cpp
@@ -522,6 +522,23 @@ namespace lbAbiAmd64Win64 {
}
};
+
+gb_internal bool is_llvm_type_slice_like(LLVMTypeRef type) {
+ if (!lb_is_type_kind(type, LLVMStructTypeKind)) {
+ return false;
+ }
+ if (LLVMCountStructElementTypes(type) != 2) {
+ return false;
+ }
+ LLVMTypeRef fields[2] = {};
+ LLVMGetStructElementTypes(type, fields);
+ if (!lb_is_type_kind(fields[0], LLVMPointerTypeKind)) {
+ return false;
+ }
+ return lb_is_type_kind(fields[1], LLVMIntegerTypeKind) && lb_sizeof(fields[1]) == 8;
+
+}
+
// NOTE(bill): I hate `namespace` in C++ but this is just because I don't want to prefix everything
namespace lbAbiAmd64SysV {
enum RegClass {
@@ -652,23 +669,6 @@ namespace lbAbiAmd64SysV {
return false;
}
- gb_internal bool is_llvm_type_slice_like(LLVMTypeRef type) {
- if (!lb_is_type_kind(type, LLVMStructTypeKind)) {
- return false;
- }
- if (LLVMCountStructElementTypes(type) != 2) {
- return false;
- }
- LLVMTypeRef fields[2] = {};
- LLVMGetStructElementTypes(type, fields);
- if (!lb_is_type_kind(fields[0], LLVMPointerTypeKind)) {
- return false;
- }
- return lb_is_type_kind(fields[1], LLVMIntegerTypeKind) && lb_sizeof(fields[1]) == 8;
-
- }
-
-
gb_internal bool is_aggregate(LLVMTypeRef type) {
LLVMTypeKind kind = LLVMGetTypeKind(type);
switch (kind) {
diff --git a/src/llvm_backend_const.cpp b/src/llvm_backend_const.cpp
index 39a223027..edcc241dc 100644
--- a/src/llvm_backend_const.cpp
+++ b/src/llvm_backend_const.cpp
@@ -540,22 +540,38 @@ gb_internal bool lb_is_nested_possibly_constant(Type *ft, Selection const &sel,
gb_internal Slice<LLVMValueRef> lb_construct_const_union_flatten_values(lbModule *m, LLVMValueRef variant_value, Type *variant_type, LLVMTypeRef elem) {
LLVMTypeRef llvm_variant_type = lb_type(m, variant_type);
LLVMTypeKind variant_kind = LLVMGetTypeKind(llvm_variant_type);
+ LLVMTypeKind elem_kind = LLVMGetTypeKind(elem);
- if (are_types_identical(base_type(variant_type), t_string)) {
- LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(2);
- elems[0] = llvm_const_extract_value(m, variant_value, 0);
- elems[0] = LLVMConstPtrToInt(elems[0], elem);
-
- elems[1] = llvm_const_extract_value(m, variant_value, 1);
+ if (is_type_struct(variant_type)) {
+ Type *st = base_type(variant_type);
+ GB_ASSERT(st->kind == Type_Struct);
+ if (st->Struct.fields.count == 1) {
+ LLVMValueRef f = llvm_const_extract_value(m, variant_value, 0);
+ return lb_construct_const_union_flatten_values(m, f, st->Struct.fields[0]->type, elem);
+ }
+ } else if (is_llvm_type_slice_like(llvm_variant_type)) {
+ if (lb_sizeof(elem) == build_context.ptr_size) {
+ LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(2);
+ elems[0] = llvm_const_extract_value(m, variant_value, 0);
+ elems[0] = LLVMConstPtrToInt(elems[0], elem);
- return {elems, 2};
- }
+ elems[1] = llvm_const_extract_value(m, variant_value, 1);
- if (is_type_struct(variant_type)) {
- // Type *st = base_type(variant_type);
- // if (st->Struct.fields.count == 1) {
- // return lb_construct_const_union_flatten_values(m, llvm_const_extract_value(m, variant_value, 0), st->Struct.fields[0]->type, elem);
- // }
+ return {elems, 2};
+ }
+ } else if (is_type_array_like(variant_type)) {
+ Type *array_elem = base_array_type(variant_type);
+ isize array_count = get_array_type_count(variant_type);
+ Slice<LLVMValueRef> array = temporary_slice_make<LLVMValueRef>(array_count);
+ for (isize i = 0; i < array_count; i++) {
+ LLVMValueRef v = llvm_const_extract_value(m, variant_value, 0);
+ auto res = lb_construct_const_union_flatten_values(m, v, array_elem, elem);
+ if (res.count != 1) {
+ return {};
+ }
+ array[i] = res[0];
+ }
+ return array;
} else if (variant_kind == LLVMIntegerTypeKind) {
if (elem == llvm_variant_type) {
LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(1);
@@ -572,7 +588,8 @@ gb_internal Slice<LLVMValueRef> lb_construct_const_union_flatten_values(lbModule
return {elems, 1};
}
}
- } else if (!is_type_different_to_arch_endianness(variant_type)) {
+ } else if (!is_type_different_to_arch_endianness(variant_type) &&
+ elem_kind == LLVMIntegerTypeKind) {
switch (variant_kind) {
case LLVMHalfTypeKind:
{
@@ -687,138 +704,39 @@ gb_internal LLVMValueRef lb_construct_const_union(lbModule *m, LLVMValueRef vari
LLVMTypeKind block_kind = LLVMGetTypeKind(block_type);
LLVMTypeKind variant_kind = LLVMGetTypeKind(llvm_variant_type);
- if (block_size != variant_size) {
- if (block_kind == LLVMArrayTypeKind) {
- LLVMTypeRef elem = LLVMGetElementType(block_type);
- unsigned count = LLVMGetArrayLength(block_type);
-
- if (variant_kind == LLVMIntegerTypeKind) {
- if (elem == llvm_variant_type) {
- LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(count);
- elems[0] = variant_value;
- for (unsigned j = 1; j < count; j++) {
- elems[j] = LLVMConstNull(elem);
- }
- block_value = LLVMConstArray(elem, elems, count);
- goto assign_value_wrapped;
- } else if (!is_type_different_to_arch_endianness(variant_type)) {
- i64 elem_size = lb_sizeof(elem);
- i64 variant_size = lb_sizeof(llvm_variant_type);
- if (elem_size > variant_size) {
- u64 val = LLVMConstIntGetZExtValue(variant_value);
-
- LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(count);
- elems[0] = LLVMConstInt(elem, val, false);
- for (unsigned j = 1; j < count; j++) {
- elems[j] = LLVMConstNull(elem);
- }
- block_value = LLVMConstArray(elem, elems, count);
- goto assign_value_wrapped;
- }
- }
- } else if (!is_type_different_to_arch_endianness(variant_type)) {
- switch (variant_kind) {
- case LLVMHalfTypeKind:
- {
- LLVMBool loses = false;
- f64 res = LLVMConstRealGetDouble(variant_value, &loses);
- u16 val = f32_to_f16(cast(f32)res);
-
- LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(count);
- elems[0] = LLVMConstInt(elem, val, false);
- for (unsigned j = 1; j < count; j++) {
- elems[j] = LLVMConstNull(elem);
- }
- block_value = LLVMConstArray(elem, elems, count);
- goto assign_value_wrapped;
- }
- break;
- case LLVMFloatTypeKind:
- {
- LLVMBool loses = false;
- f64 res = LLVMConstRealGetDouble(variant_value, &loses);
- union { f32 f; u32 i; } val = {};
- val.f = cast(f32)res;
-
- LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(count);
- elems[0] = LLVMConstInt(elem, val.i, false);
- for (unsigned j = 1; j < count; j++) {
- elems[j] = LLVMConstNull(elem);
- }
- block_value = LLVMConstArray(elem, elems, count);
- goto assign_value_wrapped;
- }
- break;
- case LLVMDoubleTypeKind:
- {
- LLVMBool loses = false;
- f64 res = LLVMConstRealGetDouble(variant_value, &loses);
- union { f64 f; u64 i; } val = {};
- val.f = res;
-
- LLVMValueRef *elems = temporary_alloc_array<LLVMValueRef>(count);
- elems[0] = LLVMConstInt(elem, val.i, false);
- for (unsigned j = 1; j < count; j++) {
- elems[j] = LLVMConstNull(elem);
- }
- block_value = LLVMConstArray(elem, elems, count);
- goto assign_value_wrapped;
- }
- break;
- }
- }
+ if (block_kind == LLVMArrayTypeKind) {
+ LLVMTypeRef elem = LLVMGetElementType(block_type);
+ unsigned count = LLVMGetArrayLength(block_type);
- } else if (block_kind == LLVMIntegerTypeKind && !is_type_different_to_arch_endianness(variant_type)) {
- if (variant_kind == LLVMIntegerTypeKind) {
- i64 variant_size = lb_sizeof(llvm_variant_type);
- if (block_size > variant_size) {
- u64 val = LLVMConstIntGetZExtValue(variant_value);
- block_value = LLVMConstInt(block_type, val, false);
+ Slice<LLVMValueRef> partial_elems = lb_construct_const_union_flatten_values(m, variant_value, variant_type, elem);
+ if (partial_elems.count == count) {
+ block_value = LLVMConstArray(elem, partial_elems.data, count);
+ goto assign_value_wrapped;
+ }
- goto assign_value_wrapped;
- }
- } else {
- switch (variant_kind) {
- case LLVMHalfTypeKind:
- {
- LLVMBool loses = false;
- f64 res = LLVMConstRealGetDouble(variant_value, &loses);
- u16 val = f32_to_f16(cast(f32)res);
-
- block_value = LLVMConstInt(block_type, val, false);
- goto assign_value_wrapped;
- }
- break;
- case LLVMFloatTypeKind:
- {
- LLVMBool loses = false;
- f64 res = LLVMConstRealGetDouble(variant_value, &loses);
- union { f32 f; u32 i; } val = {};
- val.f = cast(f32)res;
-
- block_value = LLVMConstInt(block_type, val.i, false);
- goto assign_value_wrapped;
- }
- break;
- case LLVMDoubleTypeKind:
- {
- LLVMBool loses = false;
- f64 res = LLVMConstRealGetDouble(variant_value, &loses);
- union { f64 f; u64 i; } val = {};
- val.f = res;
-
- block_value = LLVMConstInt(block_type, val.i, false);
- goto assign_value_wrapped;
- }
- break;
- }
+ Slice<LLVMValueRef> full_elems = temporary_slice_make<LLVMValueRef>(count);
+ slice_copy(&full_elems, partial_elems);
+ for (isize j = partial_elems.count; j < count; j++) {
+ full_elems[j] = LLVMConstNull(elem);
+ }
+ block_value = LLVMConstArray(elem, full_elems.data, count);
+ goto assign_value_wrapped;
+
+ } else if (block_size != variant_size) {
+ if (block_kind == LLVMIntegerTypeKind && !is_type_different_to_arch_endianness(variant_type)) {
+ Slice<LLVMValueRef> partial_elems = lb_construct_const_union_flatten_values(m, variant_value, variant_type, block_type);
+ if (partial_elems.count == 1) {
+ block_value = partial_elems[0];
+ goto assign_value_wrapped;
}
}
return nullptr;
}
if (block_kind == LLVMIntegerTypeKind) {
+ GB_ASSERT(block_size == variant_size);
+
switch (variant_kind) {
case LLVMHalfTypeKind:
case LLVMFloatTypeKind:
generated by cgit v1.2.3 (git 2.39.1) at 2026-02-15 18:12:45 +0000