Fix type `switch` debug information on `-o:none`

1 files changed, 11 insertions, 1 deletions

diff --git a/src/llvm_backend_opt.cpp b/src/llvm_backend_opt.cpp
index 61f51b15b..141ee88c7 100644
--- a/src/llvm_backend_opt.cpp
+++ b/src/llvm_backend_opt.cpp
@@ -370,11 +370,21 @@ gb_internal void lb_run_remove_dead_instruction_pass(lbProcedure *p) {
 }
 
 
-gb_internal void lb_run_function_pass_manager(LLVMPassManagerRef fpm, lbProcedure *p) {
+gb_internal void lb_run_function_pass_manager(LLVMPassManagerRef fpm, lbProcedure *p, lbFunctionPassManagerKind pass_manager_kind) {
 	if (p == nullptr) {
 		return;
 	}
 	LLVMRunFunctionPassManager(fpm, p->value);
+	switch (pass_manager_kind) {
+	case lbFunctionPassManager_none:
+		return;
+	case lbFunctionPassManager_default:
+	case lbFunctionPassManager_default_without_memcpy:
+		if (build_context.optimization_level < 0) {
+			return;
+		}
+		break;
+	}
 	// NOTE(bill): LLVMAddDCEPass doesn't seem to be exported in the official DLL's for LLVM
 	// which means we cannot rely upon it
 	// This is also useful for read the .ll for debug purposes because a lot of instructions