From 54c795f8297d5087b013777bddac32ed47941cb7 Mon Sep 17 00:00:00 2001
From: Rob Clark <robdclark@chromium.org>
Date: Thu, 19 Dec 2019 09:48:39 -0800
Subject: [PATCH] freedreno/ir3: fix crash when no non-input instructions

This scenario can come up with block-sched and nop-sched moved to after
RA.  So lets fix it first to keep things bisectable.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3569>
---
 src/freedreno/ir3/ir3_ra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/freedreno/ir3/ir3_ra.c b/src/freedreno/ir3/ir3_ra.c
index 789c08f42ed..3b54bdb1893 100644
--- a/src/freedreno/ir3/ir3_ra.c
+++ b/src/freedreno/ir3/ir3_ra.c
@@ -775,7 +775,7 @@ ra_block_compute_live_ranges(struct ir3_ra_ctx *ctx, struct ir3_block *block)
 
 				def(name, id->defn);
 
-				if (instr->opc == OPC_META_INPUT)
+				if ((instr->opc == OPC_META_INPUT) && first_non_input)
 					use(name, first_non_input);
 
 				if (is_high(id->defn)) {