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| author | Craig Topper <craig.topper@intel.com> | 2019-11-01 11:28:32 -0700 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2019-11-01 13:06:03 -0700 |
| commit | eeeb18cd075ddf7a44c8571f9e17e4b1fcbc8aa4 (patch) | |
| tree | 883be51979c37fdaa548ecd312e1f84402360b1c /llvm/lib/CodeGen/MachineCombiner.cpp | |
| parent | deaf121b657323fde17dd862a13b05e8b7ee6954 (diff) | |
| download | bcm5719-llvm-eeeb18cd075ddf7a44c8571f9e17e4b1fcbc8aa4.tar.gz bcm5719-llvm-eeeb18cd075ddf7a44c8571f9e17e4b1fcbc8aa4.zip | |
[X86] Change the behavior of canWidenShuffleElements used by lowerV2X128Shuffle to match the behavior in lowerVectorShuffle with regards to zeroable elements.
Previously we marked zeroable elements in a way that prevented
the widening check from recognizing that it could widen. Now
we only mark them zeroable if V2 is an all zeros vector. This
matches what we do for widening elements in lowerVectorShuffle.
Fixes PR43866.
Diffstat (limited to 'llvm/lib/CodeGen/MachineCombiner.cpp')
0 files changed, 0 insertions, 0 deletions
