diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2012-12-12 00:42:09 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2012-12-12 00:42:09 +0000 |
| commit | 61f4dfe3693bf68b20748d82ac4dd9bf2f356699 (patch) | |
| tree | 47cd7aa5c257fa42db0fa94e4aa0c504592364c9 /lib/Target/X86/X86ISelLowering.cpp | |
| parent | d0a0d221da55f5e2d97909991d77e7ab91e75426 (diff) | |
| download | llvm-61f4dfe3693bf68b20748d82ac4dd9bf2f356699.tar.gz llvm-61f4dfe3693bf68b20748d82ac4dd9bf2f356699.tar.bz2 llvm-61f4dfe3693bf68b20748d82ac4dd9bf2f356699.tar.xz | |
Avoid using lossy load / stores for memcpy / memset expansion. e.g.
f64 load / store on non-SSE2 x86 targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169944 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 90bee41e35..800c2012df 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -1412,6 +1412,14 @@ X86TargetLowering::getOptimalMemOpType(uint64_t Size, return MVT::i32; } +bool X86TargetLowering::isLegalMemOpType(MVT VT) const { + if (VT == MVT::f32) + return X86ScalarSSEf32; + else if (VT == MVT::f64) + return X86ScalarSSEf64; + return VT.isInteger(); +} + bool X86TargetLowering::allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const { if (Fast) |