From eaec57ab6b5a2698948a92ca5c7b34c5bbf279c6 Mon Sep 17 00:00:00 2001
From: Job Noorman <jnoorman@igalia.com>
Date: Mon, 17 Jun 2024 11:34:25 +0200
Subject: [PATCH] ir3: don't remove intervals for non-killed tex prefetch
 sources

Fixes: 613eaac7b53 ("ir3: Initial support for spilling non-shared registers")
Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29497>
---
 src/freedreno/ir3/ir3_spill.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/freedreno/ir3/ir3_spill.c b/src/freedreno/ir3/ir3_spill.c
index e8d24475561..f2839b6ba2a 100644
--- a/src/freedreno/ir3/ir3_spill.c
+++ b/src/freedreno/ir3/ir3_spill.c
@@ -1325,8 +1325,10 @@ remove_input_phi(struct ra_spill_ctx *ctx, struct ir3_instruction *instr)
       return;
 
    if (instr->opc == OPC_META_TEX_PREFETCH) {
-      ra_foreach_src (src, instr)
-         remove_src(ctx, instr, src);
+      ra_foreach_src (src, instr) {
+         if (src->flags & IR3_REG_FIRST_KILL)
+            remove_src(ctx, instr, src);
+      }
    }
    if (instr->dsts[0]->flags & IR3_REG_UNUSED)
       remove_dst(ctx, instr->dsts[0]);