From 92cf02ee2308c60c7c2f275a68572b8bcb45d2d6 Mon Sep 17 00:00:00 2001
From: Georg Lehmann <dadschoorse@gmail.com>
Date: Mon, 14 Jul 2025 17:10:07 +0200
Subject: [PATCH] nir/search: support swizzles on expressions in replacement
 patterns

Before this wasn't a compile time error, but it also didn't do anything.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36117>
---
 src/compiler/nir/nir_search.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/compiler/nir/nir_search.c b/src/compiler/nir/nir_search.c
index 8faed29201e..52ede88e9b2 100644
--- a/src/compiler/nir/nir_search.c
+++ b/src/compiler/nir/nir_search.c
@@ -500,7 +500,10 @@ construct_value(nir_builder *build,
 
       nir_alu_src val;
       val.src = nir_src_for_ssa(&alu->def);
-      memcpy(val.swizzle, identity_swizzle, sizeof val.swizzle);
+      if (expr->swizzle < 0)
+         memcpy(val.swizzle, identity_swizzle, sizeof(val.swizzle));
+      else
+         memset(val.swizzle, expr->swizzle, sizeof(val.swizzle));
 
       return val;
    }