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| author | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2018-12-13 03:17:40 +0000 |
|---|---|---|
| committer | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2018-12-13 03:17:40 +0000 |
| commit | 6071e1aa581eff5447ce99e5e599b59ea2ce4a62 (patch) | |
| tree | bcb53d5f88080f2cbb1204c398b2654627132535 /clang/docs | |
| parent | 54c01ad6a9e75f01765a45db5fe9775570707079 (diff) | |
[AMDGPU] Simplify negated condition
Optimize sequence:
%sel = V_CNDMASK_B32_e64 0, 1, %cc
%cmp = V_CMP_NE_U32 1, %1
$vcc = S_AND_B64 $exec, %cmp
S_CBRANCH_VCC[N]Z
=>
$vcc = S_ANDN2_B64 $exec, %cc
S_CBRANCH_VCC[N]Z
It is the negation pattern inserted by DAGCombiner::visitBRCOND() in the
rebuildSetCC().
Differential Revision: https://reviews.llvm.org/D55402
llvm-svn: 349003
Diffstat (limited to 'clang/docs')
0 files changed, 0 insertions, 0 deletions