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| author | Matthew Simpson <mssimpso@codeaurora.org> | 2016-12-15 18:36:59 +0000 |
|---|---|---|
| committer | Matthew Simpson <mssimpso@codeaurora.org> | 2016-12-15 18:36:59 +0000 |
| commit | 2c8de192a1eab0f60c3c3ccc3652e22cba275a82 (patch) | |
| tree | 4270af75ada1c147a736e2e6221687360da1266b /llvm/lib | |
| parent | 2a26a5f1f0694c07a3d6f4dcb312476c912d1ea9 (diff) | |
| download | bcm5719-llvm-2c8de192a1eab0f60c3c3ccc3652e22cba275a82.tar.gz bcm5719-llvm-2c8de192a1eab0f60c3c3ccc3652e22cba275a82.zip | |
[AArch64] Guard Misaligned 128-bit store penalty by subtarget feature
This patch checks that the SlowMisaligned128Store subtarget feature is set
when penalizing such stores in getMemoryOpCost.
Differential Revision: https://reviews.llvm.org/D27677
llvm-svn: 289845
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp index ecf4d93068a..88c98865bbc 100644 --- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp @@ -467,7 +467,8 @@ int AArch64TTIImpl::getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment, unsigned AddressSpace) { std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Src); - if (Opcode == Instruction::Store && Src->isVectorTy() && Alignment != 16 && + if (ST->isMisaligned128StoreSlow() && Opcode == Instruction::Store && + Src->isVectorTy() && Alignment != 16 && Src->getVectorElementType()->isIntegerTy(64)) { // Unaligned stores are extremely inefficient. We don't split // unaligned v2i64 stores because the negative impact that has shown in |
