From 7cc24aa506beb09847181c64a4a14507e77d840f Mon Sep 17 00:00:00 2001
From: Job Noorman <jnoorman@igalia.com>
Date: Wed, 21 Aug 2024 09:52:02 +0200
Subject: [PATCH] ir3: fix recognizing const/imm registers as a0

Fixes: 72bb4d79dcc ("ir3/legalize: handle scalar ALU WAR hazards for a0.x")
Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30611>
---
 src/freedreno/ir3/ir3.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/freedreno/ir3/ir3.h b/src/freedreno/ir3/ir3.h
index b728ef58898..fe6932a4f41 100644
--- a/src/freedreno/ir3/ir3.h
+++ b/src/freedreno/ir3/ir3.h
@@ -1401,6 +1401,8 @@ is_reg_gpr(const struct ir3_register *reg)
 static inline bool
 is_reg_a0(const struct ir3_register *reg)
 {
+   if (reg->flags & (IR3_REG_CONST | IR3_REG_IMMED))
+      return false;
    return reg->num == regid(REG_A0, 0);
 }