[PATCH] D20400: AMDGPU: Also look for s_cbranch_vccz
Matt Arsenault via llvm-commits
llvm-commits at lists.llvm.org
Wed May 18 16:15:55 PDT 2016
arsenm created this revision.
arsenm added reviewers: tstellarAMD, nhaehnle.
arsenm added a subscriber: llvm-commits.
Herald added subscribers: kzhuravl, arsenm.
http://reviews.llvm.org/D20400
Files:
lib/Target/AMDGPU/SILowerControlFlow.cpp
Index: lib/Target/AMDGPU/SILowerControlFlow.cpp
===================================================================
--- lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -158,7 +158,8 @@
// When a uniform loop is inside non-uniform control flow, the branch
// leaving the loop might be an S_CBRANCH_VCCNZ, which is never taken
// when EXEC = 0. We should skip the loop lest it becomes infinite.
- if (I->getOpcode() == AMDGPU::S_CBRANCH_VCCNZ)
+ if (I->getOpcode() == AMDGPU::S_CBRANCH_VCCNZ ||
+ I->getOpcode() == AMDGPU::S_CBRANCH_VCCZ)
return true;
if (++NumInstr >= SkipThreshold)
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