diff options
Diffstat (limited to 'src/llvm_backend_proc.cpp')
| -rw-r--r-- | src/llvm_backend_proc.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/llvm_backend_proc.cpp b/src/llvm_backend_proc.cpp index 5aee5b639..fee825a2f 100644 --- a/src/llvm_backend_proc.cpp +++ b/src/llvm_backend_proc.cpp @@ -579,6 +579,8 @@ gb_internal void lb_begin_procedure_body(lbProcedure *p) { p->raw_input_parameters = array_make<LLVMValueRef>(permanent_allocator(), raw_input_parameters_count); LLVMGetParams(p->value, p->raw_input_parameters.data); + bool is_odin_cc = is_calling_convention_odin(ft->calling_convention); + unsigned param_index = 0; for_array(i, params->variables) { Entity *e = params->variables[i]; @@ -613,9 +615,26 @@ gb_internal void lb_begin_procedure_body(lbProcedure *p) { } } else if (arg_type->kind == lbArg_Indirect) { if (e->token.string.len != 0 && !is_blank_ident(e->token.string)) { + i64 sz = type_size_of(e->type); + bool do_callee_copy = false; + + if (is_odin_cc) { + do_callee_copy = sz <= 16; + if (build_context.internal_by_value) { + do_callee_copy = true; + } + } + lbValue ptr = {}; ptr.value = LLVMGetParam(p->value, param_offset+param_index); ptr.type = alloc_type_pointer(e->type); + + if (do_callee_copy) { + lbValue new_ptr = lb_add_local_generated(p, e->type, false).addr; + lb_mem_copy_non_overlapping(p, new_ptr, ptr, lb_const_int(p->module, t_uint, sz)); + ptr = new_ptr; + } + lb_add_entity(p->module, e, ptr); lb_add_debug_param_variable(p, ptr.value, e->type, e->token, param_index+1, p->decl_block); } |