From d589914956fa6afb150e5ddbf52fc697e50df814 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Sun, 29 Oct 2023 20:43:02 +0000
Subject: [PATCH] Ignore `store undef` calls

---
 src/llvm_backend_general.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/llvm_backend_general.cpp b/src/llvm_backend_general.cpp
index 0f0df7ca5..fdcf94f29 100644
--- a/src/llvm_backend_general.cpp
+++ b/src/llvm_backend_general.cpp
@@ -962,8 +962,12 @@ gb_internal bool lb_is_type_proc_recursive(Type *t) {
 
 gb_internal void lb_emit_store(lbProcedure *p, lbValue ptr, lbValue value) {
 	GB_ASSERT(value.value != nullptr);
-	Type *a = type_deref(ptr.type);
 
+	if (LLVMIsUndef(value.value)) {
+		return;
+	}
+
+	Type *a = type_deref(ptr.type);
 	if (LLVMIsNull(value.value)) {
 		LLVMTypeRef src_t = llvm_addr_type(p->module, ptr);
 		if (is_type_proc(a)) {