From 17306009431f0b76e03a84e4d15c27d4a6d7cc5e Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Mon, 30 Jan 2023 20:53:18 -0600
Subject: [PATCH] nak: Use Src::Zero for load_const(0)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24998>
---
 src/nouveau/compiler/nak_from_nir.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/nouveau/compiler/nak_from_nir.rs b/src/nouveau/compiler/nak_from_nir.rs
index 87f0b84007c..7cf6a448df2 100644
--- a/src/nouveau/compiler/nak_from_nir.rs
+++ b/src/nouveau/compiler/nak_from_nir.rs
@@ -335,7 +335,11 @@ impl<'a> ShaderFromNir<'a> {
         for c in 0..load_const.def.num_components {
             assert!(load_const.def.bit_size == 32);
             let imm_u32 = unsafe { load_const.values()[c as usize].u32_ };
-            srcs.push(Src::new_imm_u32(imm_u32));
+            srcs.push(if imm_u32 == 0 {
+                Src::Zero
+            } else {
+                Src::new_imm_u32(imm_u32)
+            });
         }
         self.instrs.push(Instr::new_vec(dst, &srcs));
     }