From 682690b970a5ab94602b3eb74473a9914447b921 Mon Sep 17 00:00:00 2001
From: Jacob Young <jacobly0@users.noreply.github.com>
Date: Sat, 18 Jan 2025 01:56:36 -0500
Subject: [PATCH] x86_64: enable struct field reordering

The blocker for enabling this feature was my need to debug the emitted
assembly without debug info and having to manually inspect memory to
determine struct contents.  However, we now have debug info!

    (lldb) v -L foo bar
    0x00007fffffffda20: (repro.repro.Foo) foo = {
    0x00007fffffffda24:   .x = 12
    0x00007fffffffda20:   .y = 34
    }
    0x00007fffffffda28: (repro.repro.Bar) bar = {
    0x00007fffffffda28:   .x = 56
    0x00007fffffffda2c:   .y = 78
    }

Updates #21530
---
 src/target.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/target.zig b/src/target.zig
index d67fc797ceec..b300d81123a6 100644
--- a/src/target.zig
+++ b/src/target.zig
@@ -720,7 +720,7 @@ pub inline fn backendSupportsFeature(backend: std.builtin.CompilerBackend, compt
             else => false,
         },
         .field_reordering => switch (backend) {
-            .stage2_c, .stage2_llvm => true,
+            .stage2_c, .stage2_llvm, .stage2_x86_64 => true,
             else => false,
         },
         .safety_checked_instructions => switch (backend) {