Merge pull request #3466 from laytan/fix-proc-args-debug-info

fix direct proc args debug info

src/llvm_backend_debug.cpp

@@ -1027,7 +1027,7 @@ gb_internal void lb_add_debug_local_variable(lbProcedure *p, LLVMValueRef ptr, T
 	LLVMDIBuilderInsertDeclareAtEnd(m->debug_builder, storage, var_info, llvm_expr, llvm_debug_loc, block);
 }
 
-gb_internal void lb_add_debug_param_variable(lbProcedure *p, LLVMValueRef ptr, Type *type, Token const &token, unsigned arg_number, lbBlock *block, lbArgKind arg_kind) {
+gb_internal void lb_add_debug_param_variable(lbProcedure *p, LLVMValueRef ptr, Type *type, Token const &token, unsigned arg_number, lbBlock *block) {
 	if (p->debug_info == nullptr) {
 		return;
 	}
@@ -1088,15 +1088,7 @@ gb_internal void lb_add_debug_param_variable(lbProcedure *p, LLVMValueRef ptr, T
 	// NOTE(bill, 2022-02-01): For parameter values, you must insert them at the end of the decl block
 	// The reason is that if the parameter is at index 0 and a pointer, there is not such things as an
 	// instruction "before" it.
-	switch (arg_kind) {
-	case lbArg_Direct:
-		LLVMDIBuilderInsertDbgValueAtEnd(m->debug_builder, storage, var_info, llvm_expr, llvm_debug_loc, block->block);
-		break;
-	case lbArg_Indirect:
-		LLVMDIBuilderInsertDeclareAtEnd(m->debug_builder, storage, var_info, llvm_expr, llvm_debug_loc, block->block);
-		break;
-	}
-
+	LLVMDIBuilderInsertDeclareAtEnd(m->debug_builder, storage, var_info, llvm_expr, llvm_debug_loc, block->block);
 }
 
 

src/llvm_backend_proc.cpp

@@ -597,16 +597,7 @@ gb_internal void lb_begin_procedure_body(lbProcedure *p) {
 						lbValue ptr = lb_address_from_load_or_generate_local(p, param);
 						GB_ASSERT(LLVMIsAAllocaInst(ptr.value));
 						lb_add_entity(p->module, e, ptr);
-
-						lbBlock *block = p->decl_block;
-						if (original_value != value) {
-							block = p->curr_block;
-						}
-						LLVMValueRef debug_storage_value = value;
-						if (original_value != value && LLVMIsALoadInst(value)) {
-							debug_storage_value = LLVMGetOperand(value, 0);
-						}
-						lb_add_debug_param_variable(p, debug_storage_value, e->type, e->token, param_index+1, block, arg_type->kind);
+						lb_add_debug_param_variable(p, ptr.value, e->type, e->token, param_index+1, p->curr_block);
 					}
 				} else if (arg_type->kind == lbArg_Indirect) {
 					if (e->token.string.len != 0 && !is_blank_ident(e->token.string)) {
@@ -614,7 +605,7 @@ gb_internal void lb_begin_procedure_body(lbProcedure *p) {
 						ptr.value = LLVMGetParam(p->value, param_offset+param_index);
 						ptr.type = alloc_type_pointer(e->type);
 						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, arg_type->kind);
+						lb_add_debug_param_variable(p, ptr.value, e->type, e->token, param_index+1, p->decl_block);
 					}
 				}
 			}