From b2443ed62bcf393693eedb9e789e4198f4e460cd Mon Sep 17 00:00:00 2001 From: Michael Kuperstein Date: Thu, 20 Oct 2016 21:04:31 +0000 Subject: [X86] Enable interleaved memory access by default This lets the loop vectorizer generate interleaved memory accesses on x86. Differential Revision: https://reviews.llvm.org/D25350 llvm-svn: 284779 --- llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'llvm/lib/Target/X86/X86TargetTransformInfo.cpp') diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index e14220807c8..7f6dc2b2164 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -1767,3 +1767,10 @@ bool X86TTIImpl::areInlineCompatible(const Function *Caller, // correct. return (CallerBits & CalleeBits) == CalleeBits; } + +bool X86TTIImpl::enableInterleavedAccessVectorization() { + // TODO: We expect this to be beneficial regardless of arch, + // but there are currently some unexplained performance artifacts on Atom. + // As a temporary solution, disable on Atom. + return !(ST->isAtom() || ST->isSLM()); +} -- cgit v1.2.3