From 4ffef73bf5c7801ab6c4e1448931fdb26f947f43 Mon Sep 17 00:00:00 2001
From: Connor Abbott <cwabbott0@gmail.com>
Date: Fri, 10 Mar 2023 00:01:54 +0100
Subject: [PATCH] ir3: Immediate source for stc is invalid

For some reason some CTS tests are hitting this after removing the
single-source collect.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22075>
---
 src/freedreno/ir3/ir3.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/freedreno/ir3/ir3.c b/src/freedreno/ir3/ir3.c
index 81321ab2842..ab3077594ad 100644
--- a/src/freedreno/ir3/ir3.c
+++ b/src/freedreno/ir3/ir3.c
@@ -1322,6 +1322,9 @@ ir3_valid_flags(struct ir3_instruction *instr, unsigned n, unsigned flags)
          if (instr->opc == OPC_LDG_A && (n < 2))
             return false;
 
+         if (instr->opc == OPC_STC && n != 0)
+            return false;
+
          /* as with atomics, these cat6 instrs can only have an immediate
           * for SSBO/IBO slot argument
           */