| commit | 76edba0ca1931fabe2d1d92ff38e5277cf119a74 | [log] [tgz] |
|---|---|---|
| author | Sanjay Patel <spatel@rotateright.com> | Tue Sep 12 23:24:05 2017 +0000 |
| committer | Sanjay Patel <spatel@rotateright.com> | Tue Sep 12 23:24:05 2017 +0000 |
| tree | be527c8af62db6fad49935e19b168152b6cb2fb6 | |
| parent | 623927eb7fee61e681a489cc4c7f6920eab379d8 [diff] |
[x86] eliminate unnecessary vector compare for AVX masked store The masked store instruction only cares about the sign-bit of each mask element, so the compare s<0 isn't needed. As noted in PR11210: https://bugs.llvm.org/show_bug.cgi?id=11210 ...fixing this should allow us to eliminate x86-specific masked store intrinsics in IR. (Although more testing will be needed to confirm that.) I filed a bug to track improvements for AVX512: https://bugs.llvm.org/show_bug.cgi?id=34584 Differential Revision: https://reviews.llvm.org/D37446 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313089 91177308-0d34-0410-b5e6-96231b3b80d8