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Automatically emit objc_msgSend calls when calling imported or implemented Objective-C methods

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- Add intrinsics.objc_super()

- Emit objc_msgSendSuper2 calls when an objc method call is combined with objc_super(self)

- Fix objc_block return value ABI for large struct returns

- Fix objc_implement method wrappers bad ABI for large struct returns and indirect args

- Simplify parameter forwarding for objc_imlpement methods

- Add intrinsics.objc_instancetype to mimi Objective-C instancetype* returns
  This facilitates returning the correct type on subclasses when calling mehtods
  such as `alloc`, `init`, `retain`, etc.

- Refactor Objective-C class implementations generation so that hierarchies are properly initialized

- Better codegen for context passing with ivar-based autocontext

- Allow @superclass on imported objc-c objects

- Better codegen for block forwarding invoker, arguments are forwarded directly
This commit is contained in:
Harold Brenes
2025-09-16 00:49:31 -04:00
parent 9b4c0ea492
commit 5af13f5d53
13 changed files with 575 additions and 151 deletions
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22
src/llvm_backend_proc.cpp
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@@ -3753,6 +3753,7 @@ gb_internal lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValu
case BuiltinProc_objc_register_class: return lb_handle_objc_register_class(p, expr);
case BuiltinProc_objc_ivar_get: return lb_handle_objc_ivar_get(p, expr);
case BuiltinProc_objc_block: return lb_handle_objc_block(p, expr);
case BuiltinProc_objc_super: return lb_handle_objc_super(p, expr);
case BuiltinProc_constant_utf16_cstring:
@@ -4122,21 +4123,23 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
}
Ast *proc_expr = unparen_expr(ce->proc);
Entity *proc_entity = entity_of_node(proc_expr);
if (proc_mode == Addressing_Builtin) {
Entity *e = entity_of_node(proc_expr);
BuiltinProcId id = BuiltinProc_Invalid;
if (e != nullptr) {
id = cast(BuiltinProcId)e->Builtin.id;
if (proc_entity != nullptr) {
id = cast(BuiltinProcId)proc_entity->Builtin.id;
} else {
id = BuiltinProc_DIRECTIVE;
}
return lb_build_builtin_proc(p, expr, tv, id);
}
bool is_objc_call = proc_entity->Procedure.is_objc_impl_or_import;
// NOTE(bill): Regular call
lbValue value = {};
Entity *proc_entity = entity_of_node(proc_expr);
if (proc_entity != nullptr) {
if (proc_entity->flags & EntityFlag_Disabled) {
GB_ASSERT(tv.type == nullptr);
@@ -4170,11 +4173,13 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
}
}
if (value.value == nullptr) {
if (is_objc_call) {
value.type = proc_tv.type;
} else if (value.value == nullptr) {
value = lb_build_expr(p, proc_expr);
}
GB_ASSERT(value.value != nullptr);
GB_ASSERT(value.value != nullptr || is_objc_call);
Type *proc_type_ = base_type(value.type);
GB_ASSERT(proc_type_->kind == Type_Proc);
TypeProc *pt = &proc_type_->Proc;
@@ -4402,6 +4407,11 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
isize final_count = is_c_vararg ? args.count : pt->param_count;
auto call_args = array_slice(args, 0, final_count);
if (is_objc_call) {
return lb_handle_objc_auto_send(p, expr, slice(call_args, 0, call_args.count));
}
return lb_emit_call(p, value, call_args, ce->inlining);
}