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| author | Sanjay Patel <spatel@rotateright.com> | 2017-09-12 23:24:05 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2017-09-12 23:24:05 +0000 |
| commit | 659279450e5bbf7fefb971884243eeadc4fbfe8d (patch) | |
| tree | 5987fb8d7a6c02b44addd8c33c5e925f4a52eaf6 /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | 079e746814b7744e4b1bf13f1a0089d3a747de27 (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
llvm-svn: 313089
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions