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#include "ssa.cpp"
#include "print_llvm.cpp"
struct ssaGen {
ssaModule module;
gbFile output_file;
};
b32 ssa_gen_init(ssaGen *s, Checker *c) {
if (c->error_collector.count != 0)
return false;
gb_for_array(i, c->parser->files) {
AstFile *f = &c->parser->files[i];
if (f->error_collector.count != 0)
return false;
if (f->tokenizer.error_count != 0)
return false;
}
isize tc = c->parser->total_token_count;
if (tc < 2) {
return false;
}
ssa_module_init(&s->module, c);
// TODO(bill): generate appropriate output name
isize pos = string_extension_position(c->parser->init_fullpath);
gbFileError err = gb_file_create(&s->output_file, gb_bprintf("%.*s.ll", pos, c->parser->init_fullpath.text));
if (err != gbFileError_None)
return false;
return true;
}
void ssa_gen_destroy(ssaGen *s) {
ssa_module_destroy(&s->module);
gb_file_close(&s->output_file);
}
struct ssaGlobalVariable {
ssaValue *var, *init;
DeclInfo *decl;
};
void ssa_gen_code(ssaGen *s) {
if (v_zero == NULL) {
v_zero = ssa_make_value_constant(gb_heap_allocator(), t_int, make_exact_value_integer(0));
v_one = ssa_make_value_constant(gb_heap_allocator(), t_int, make_exact_value_integer(1));
v_zero32 = ssa_make_value_constant(gb_heap_allocator(), t_i32, make_exact_value_integer(0));
v_one32 = ssa_make_value_constant(gb_heap_allocator(), t_i32, make_exact_value_integer(1));
v_two32 = ssa_make_value_constant(gb_heap_allocator(), t_i32, make_exact_value_integer(2));
v_false = ssa_make_value_constant(gb_heap_allocator(), t_bool, make_exact_value_bool(false));
v_true = ssa_make_value_constant(gb_heap_allocator(), t_bool, make_exact_value_bool(true));
}
ssaModule *m = &s->module;
CheckerInfo *info = m->info;
gbAllocator a = m->allocator;
gbArray(ssaGlobalVariable) global_variables;
gb_array_init(global_variables, gb_heap_allocator());
defer (gb_array_free(global_variables));
gb_for_array(i, info->entities.entries) {
auto *entry = &info->entities.entries[i];
Entity *e = cast(Entity *)cast(uintptr)entry->key.key;
DeclInfo *decl = entry->value;
String name = e->token.string;
switch (e->kind) {
case Entity_TypeName: {
ssaValue *t = ssa_make_value_type_name(a, e->token.string, e->type);
map_set(&m->values, hash_pointer(e), t);
map_set(&m->members, hash_string(name), t);
} break;
case Entity_Variable: {
ssaValue *g = ssa_make_value_global(a, e, NULL);
if (decl->var_decl_tags & VarDeclTag_thread_local) {
g->Global.is_thread_local = true;
}
ssaGlobalVariable var = {};
var.var = g;
var.decl = decl;
gb_array_append(global_variables, var);
map_set(&m->values, hash_pointer(e), g);
map_set(&m->members, hash_string(name), g);
} break;
case Entity_Procedure: {
auto *pd = &decl->proc_decl->ProcDecl;
String name = e->token.string;
AstNode *body = pd->body;
if (pd->foreign_name.len > 0) {
name = pd->foreign_name;
}
ssaValue *p = ssa_make_value_procedure(a, m, e->type, decl->type_expr, body, name);
p->Proc.tags = pd->tags;
map_set(&m->values, hash_pointer(e), p);
map_set(&m->members, hash_string(name), p);
} break;
}
}
gb_for_array(i, m->members.entries) {
auto *entry = &m->members.entries[i];
ssaValue *v = entry->value;
if (v->kind == ssaValue_Proc)
ssa_build_proc(v, NULL);
}
{ // Startup Runtime
// Cleanup(bill): probably better way of doing code insertion
String name = make_string(SSA_STARTUP_RUNTIME_PROC_NAME);
Type *proc_type = make_type_proc(a, gb_alloc_item(a, Scope),
NULL, 0,
NULL, 0);
AstNode *body = gb_alloc_item(a, AstNode);
ssaValue *p = ssa_make_value_procedure(a, m, proc_type, NULL, body, name);
Token token = {};
token.string = name;
Entity *e = make_entity_procedure(a, NULL, token, proc_type);
map_set(&m->values, hash_pointer(e), p);
map_set(&m->members, hash_string(name), p);
ssaProcedure *proc = &p->Proc;
proc->tags = ProcTag_no_inline; // TODO(bill): is no_inline a good idea?
ssa_begin_procedure_body(proc);
// TODO(bill): Should do a dependency graph do check which order to initialize them in?
gb_for_array(i, global_variables) {
ssaGlobalVariable *var = &global_variables[i];
if (var->decl->init_expr != NULL) {
var->init = ssa_build_expr(proc, var->decl->init_expr);
}
}
// NOTE(bill): Initialize constants first
gb_for_array(i, global_variables) {
ssaGlobalVariable *var = &global_variables[i];
if (var->init != NULL) {
if (var->init->kind == ssaValue_Constant) {
ssa_emit_store(proc, var->var, var->init);
}
}
}
gb_for_array(i, global_variables) {
ssaGlobalVariable *var = &global_variables[i];
if (var->init != NULL) {
if (var->init->kind != ssaValue_Constant) {
ssa_emit_store(proc, var->var, var->init);
}
}
}
ssa_end_procedure_body(proc);
}
// m->layout = make_string("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64");
ssa_print_llvm_ir(&s->output_file, &s->module);
}
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