diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-10-31 19:04:52 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-10-31 19:05:04 +0000 |
| commit | 04813ded982bd74dc4c7116344cb9d28b8f565a3 (patch) | |
| tree | c6857a73f5be3de9f0574d6b8a6805dfe58c0eed /llvm/lib | |
| parent | db542455dc0f5873851e220bf72a8394767c61fb (diff) | |
| download | bcm5719-llvm-04813ded982bd74dc4c7116344cb9d28b8f565a3.tar.gz bcm5719-llvm-04813ded982bd74dc4c7116344cb9d28b8f565a3.zip | |
Revert rG0e252ae19ff8d99a59d64442c38eeafa5825d441 : [X86] Enable YMM memcmp with AVX1
Breaks build bots
Differential Revision: https://reviews.llvm.org/D69658
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index afbe965ff4f..2f899b3947b 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -3444,9 +3444,10 @@ X86TTIImpl::enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const { // version is not as fast for three way compare (see #33329). const unsigned PreferredWidth = ST->getPreferVectorWidth(); if (PreferredWidth >= 512 && ST->hasAVX512()) Options.LoadSizes.push_back(64); - if (PreferredWidth >= 256 && ST->hasAVX()) Options.LoadSizes.push_back(32); + if (PreferredWidth >= 256 && ST->hasAVX2()) Options.LoadSizes.push_back(32); if (PreferredWidth >= 128 && ST->hasSSE2()) Options.LoadSizes.push_back(16); - // All GPR and vector loads can be unaligned. + // All GPR and vector loads can be unaligned. SIMD compare requires integer + // vectors (SSE2/AVX2). Options.AllowOverlappingLoads = true; } if (ST->is64Bit()) { |
