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Try to lower to LLVM IR from Odin's asm template syntax

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This commit is contained in:
gingerBill
2026-08-09 23:38:36 +01:00
parent 036e38442b
commit 22f2e2ac78
3 changed files with 434 additions and 51 deletions
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65
src/check_decl.cpp
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@@ -2004,6 +2004,25 @@ gb_internal bool is_valid_asm_parameter_type(Type *type) {
return false;
}
gb_internal AsmRegClass check_asm_reg_class_from_type(Type *type) {
if (is_type_integer(type)) {
return AsmRegClass_Integer;
}
if (is_type_float(type)) {
return AsmRegClass_Float;
}
if (is_type_boolean(type)) {
return AsmRegClass_Integer;
}
if (is_type_pointer(type) || is_type_multi_pointer(type)) {
return AsmRegClass_Integer;
}
if (is_type_simd_vector(type)) {
return AsmRegClass_Vector;
}
return AsmRegClass_Unknown;
}
gb_internal Type *check_asm_template_signature_params(CheckerContext *ctx, Scope *scope, Ast *_params, bool input_parameters, Array<AsmTemplateEntityDecl> *asm_template_entity_decls) {
Type *tuple = alloc_type_tuple();
if (_params == nullptr) {
@@ -2015,6 +2034,7 @@ gb_internal Type *check_asm_template_signature_params(CheckerContext *ctx, Scope
Array<Entity *> variables = {};
variables.allocator = heap_allocator();
i32 param_index = 0;
for (Ast *param : params) {
ast_node(field, Field, param);
@@ -2068,21 +2088,21 @@ gb_internal Type *check_asm_template_signature_params(CheckerContext *ctx, Scope
if (found == nullptr) {
array_add(&variables, entity);
AsmTemplateEntityDecl ed = {};
ed.entity = entity;
ed.kind = AsmTemplateEntityDecl_Register;
if (is_type_internally_pointer_like(type)) {
ed.kind = AsmTemplateEntityDecl_Memory;
}
AsmTemplateEntityDecl ed = asm_template_entity_decl_default(entity);
if (is_poly_name) {
ed.kind = AsmTemplateEntityDecl_Immediate;
}
if (input_parameters) {
ed.param_group = AsmTemplateEntityDeclParamGroup_Input;
ed.param_index = param_index++;
ed.result_index = -1;
} else {
ed.param_group = AsmTemplateEntityDeclParamGroup_Output;
ed.param_index = -1;
ed.result_index = param_index++;
}
ed.total_index = cast(i32)asm_template_entity_decls->count;
array_add(asm_template_entity_decls, ed);
} else {
TokenPos pos = found->token.pos;
@@ -2100,12 +2120,15 @@ gb_internal Type *check_asm_template_signature_params(CheckerContext *ctx, Scope
return tuple;
}
gb_internal AsmTemplateEntityDeclParamGroup check_asm_find_group(Entity *entity, Array<AsmTemplateEntityDecl> const &asm_template_entity_decls) {
for (auto const &ed : asm_template_entity_decls) {
gb_internal AsmTemplateEntityDeclParamGroup check_asm_find_group(Entity *entity, Array<AsmTemplateEntityDecl> const &asm_template_entity_decls, i32 *index_) {
for_array(i, asm_template_entity_decls) {
auto const &ed = asm_template_entity_decls[i];
if (ed.entity == entity) {
if (index_) *index_ = cast(i32)i;
return ed.param_group;
}
}
if (index_) *index_ = -1;
return AsmTemplateEntityDeclParamGroup_Unknown;
};
@@ -2120,7 +2143,6 @@ gb_internal AsmTemplateEntityDeclKind check_asm_find_kind(Entity *entity, Array<
gb_internal void check_asm_specs(CheckerContext *ctx, Scope *scope, Slice<Ast *> const &specs, Array<AsmTemplateEntityDecl> *asm_template_entity_decls) {
for (Ast *spec_ : specs) {
if (spec_->kind != Ast_AsmSpec) {
continue;
@@ -2150,14 +2172,9 @@ gb_internal void check_asm_specs(CheckerContext *ctx, Scope *scope, Slice<Ast *>
Entity *found = scope_insert(scope, entity);
if (found == nullptr) {
AsmTemplateEntityDecl ed = {};
ed.entity = entity;
ed.kind = AsmTemplateEntityDecl_Register;
if (is_type_internally_pointer_like(type)) {
ed.kind = AsmTemplateEntityDecl_Memory;
}
AsmTemplateEntityDecl ed = asm_template_entity_decl_default(entity);
ed.param_group = AsmTemplateEntityDeclParamGroup_Scratch;
ed.total_index = cast(i32)asm_template_entity_decls->count;
array_add(asm_template_entity_decls, ed);
} else {
TokenPos pos = found->token.pos;
@@ -2190,8 +2207,11 @@ gb_internal void check_asm_specs(CheckerContext *ctx, Scope *scope, Slice<Ast *>
continue;
}
auto input_group = check_asm_find_group(input, *asm_template_entity_decls);
auto output_group = check_asm_find_group(output, *asm_template_entity_decls);
i32 input_index = -1;
i32 output_index = -1;
auto input_group = check_asm_find_group(input, *asm_template_entity_decls, &input_index);
auto output_group = check_asm_find_group(output, *asm_template_entity_decls, &output_index);
if (input_group != AsmTemplateEntityDeclParamGroup_Input) {
error(input->token, "Parameter tied with '%.*s' must be an input parameter", LIT(output->token.string));
continue;
@@ -2201,6 +2221,15 @@ gb_internal void check_asm_specs(CheckerContext *ctx, Scope *scope, Slice<Ast *>
continue;
}
GB_ASSERT(input_index >= 0);
GB_ASSERT(output_index >= 0);
auto *i = &(*asm_template_entity_decls)[input_index];
auto *o = &(*asm_template_entity_decls)[output_index];
i->tie = output_index;
o->tie = input_index;
must_check_value = true;
}