From 521525fc0a3b9008e70841542ad6e3db4b1ea4d6 Mon Sep 17 00:00:00 2001
From: Rhys Perry <pendingchaos02@gmail.com>
Date: Thu, 2 Jan 2020 14:54:31 +0000
Subject: [PATCH] aco: don't consider loop header blocks branch blocks in
 add_coupling_code
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Loops without continues create header blocks with only 1 predecessor.

CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3257>
---
 src/amd/compiler/aco_spill.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/amd/compiler/aco_spill.cpp b/src/amd/compiler/aco_spill.cpp
index e0c3ea955cd..576b8e02aea 100644
--- a/src/amd/compiler/aco_spill.cpp
+++ b/src/amd/compiler/aco_spill.cpp
@@ -665,7 +665,7 @@ void add_coupling_code(spill_ctx& ctx, Block* block, unsigned block_idx)
 
    std::vector<aco_ptr<Instruction>> instructions;
    /* branch block: TODO take other branch into consideration */
-   if (block->linear_preds.size() == 1 && !(block->kind & block_kind_loop_exit)) {
+   if (block->linear_preds.size() == 1 && !(block->kind & (block_kind_loop_exit | block_kind_loop_header))) {
       assert(ctx.processed[block->linear_preds[0]]);
       assert(ctx.register_demand[block_idx].size() == block->instructions.size());
       std::vector<RegisterDemand> reg_demand;
-- 
2.30.2