diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86TargetTransformInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 83c78451253..b634da1d51f 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -3394,9 +3394,8 @@ X86TTIImpl::enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const { if (IsZeroCmp) { // Only enable vector loads for equality comparison. Right now the vector // version is not as fast for three way compare (see #33329). - // TODO: enable AVX512 when the DAG is ready. - // if (ST->hasAVX512()) Options.LoadSizes.push_back(64); const unsigned PreferredWidth = ST->getPreferVectorWidth(); + if (PreferredWidth >= 512 && ST->hasAVX512()) Options.LoadSizes.push_back(64); 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. SIMD compare requires integer |
