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| author | Craig Topper <craig.topper@intel.com> | 2018-08-03 04:49:42 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-08-03 04:49:42 +0000 |
| commit | a80352c04e4a351c7e88faf9cec238870574fc42 (patch) | |
| tree | 03946b0f38a75c573453dd55318d3e0bf0680bd2 /llvm/lib/Transforms/Utils/LoopRotationUtils.cpp | |
| parent | ded14af7aaeaffa2fdddd925eeaac3140bd13813 (diff) | |
| download | llvm-a80352c04e4a351c7e88faf9cec238870574fc42.zip llvm-a80352c04e4a351c7e88faf9cec238870574fc42.tar.gz llvm-a80352c04e4a351c7e88faf9cec238870574fc42.tar.bz2 | |
[X86] When post-processing the DAG to remove zero extending moves for YMM/ZMM, make sure the producing instruction is VEX/XOP/EVEX encoded.
If the producing instruction is legacy encoded it doesn't implicitly zero the upper bits. This is important for the SHA instructions which don't have a VEX encoded version. We might also be able to hit this with the incomplete f128 support that hasn't been ported to VEX.
llvm-svn: 338812
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopRotationUtils.cpp')
0 files changed, 0 insertions, 0 deletions