From c894df54f75f8004348834fce21df1f0684536cc Mon Sep 17 00:00:00 2001
From: Jacob Young <jacobly0@users.noreply.github.com>
Date: Fri, 23 Feb 2024 01:44:34 +0100
Subject: [PATCH] Builder: fix debug location of the first instruction in a
 block

---
 src/codegen/llvm/Builder.zig | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/codegen/llvm/Builder.zig b/src/codegen/llvm/Builder.zig
index 428330dc99..86fa735aca 100644
--- a/src/codegen/llvm/Builder.zig
+++ b/src/codegen/llvm/Builder.zig
@@ -6481,7 +6481,9 @@ pub const WipFunction = struct {
         self.instructions.appendAssumeCapacity(instruction);
         if (!self.builder.strip) {
             self.names.appendAssumeCapacity(final_name);
-            if (!std.meta.eql(self.current_debug_location, self.last_debug_location)) {
+            if (block_instructions.items.len == 0 or
+                self.current_debug_location != self.last_debug_location)
+            {
                 self.debug_locations.putAssumeCapacity(index, self.current_debug_location);
                 self.last_debug_location = self.current_debug_location;
             }