diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-10-23 15:13:09 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-10-23 15:13:09 +0000 |
| commit | 532a0f122e3a20415704fe3899351332795238e6 (patch) | |
| tree | 55fbc538379a7089a82c7a3bcf74f7f1bfb87620 /clang/lib/CodeGen/CGExprConstant.cpp | |
| parent | 747feb28e469a472e6ae5472385fac024ae1b632 (diff) | |
| download | bcm5719-llvm-532a0f122e3a20415704fe3899351332795238e6.tar.gz bcm5719-llvm-532a0f122e3a20415704fe3899351332795238e6.zip | |
[SLPVectorizer] Add basic support for mul/and/or/xor horizontal reductions
Expand arithmetic reduction to include mul/and/or/xor instructions.
This patch just fixes the SLPVectorizer - the effective reduction costs for AVX1+ are still poor (see rL344846) and will need to be improved before SLP sees this as a valid transform - but we can already see the effect on SSE2 tests.
This partially helps PR37731, but doesn't fix it all as it still falls over on the extraction/reduction order for some reason.
Differential Revision: https://reviews.llvm.org/D53473
llvm-svn: 345037
Diffstat (limited to 'clang/lib/CodeGen/CGExprConstant.cpp')
0 files changed, 0 insertions, 0 deletions
