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Ad-hoc pass source code location directly by pointer without stack copy

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This commit is contained in:
gingerBill
2022-10-31 00:25:53 +00:00
parent 9da37ed394
commit c39ef1b25c
4 changed files with 16 additions and 9 deletions
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src/llvm_backend_proc.cpp
+9 -2
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@@ -911,6 +911,9 @@ lbValue lb_emit_call(lbProcedure *p, lbValue value, Array<lbValue> const &args,
auto processed_args = array_make<lbValue>(permanent_allocator(), 0, args.count);
{
bool is_odin_cc = is_calling_convention_odin(pt->Proc.calling_convention);
lbFunctionType *ft = lb_get_function_type(m, p, pt);
bool return_by_pointer = ft->ret.kind == lbArg_Indirect;
@@ -946,8 +949,12 @@ lbValue lb_emit_call(lbProcedure *p, lbValue value, Array<lbValue> const &args,
} else if (arg->kind == lbArg_Indirect) {
lbValue ptr = {};
if (arg->is_byval) {
ptr = lb_copy_value_to_ptr(p, x, original_type, arg->byval_alignment);
} else if (is_calling_convention_odin(pt->Proc.calling_convention)) {
if (is_odin_cc && are_types_identical(original_type, t_source_code_location)) {
ptr = lb_address_from_load_or_generate_local(p, x);
} else {
ptr = lb_copy_value_to_ptr(p, x, original_type, arg->byval_alignment);
}
} else if (is_odin_cc) {
// NOTE(bill): Odin parameters are immutable so the original value can be passed if possible
// i.e. `T const &` in C++
ptr = lb_address_from_load_or_generate_local(p, x);