AVX1 : Enable vector masked_load/store to AVX1.
Use AVX1 FP instructions (vmaskmovps/pd) in place of the AVX2 int instructions (vpmaskmovd/q).

Differential Revision: http://reviews.llvm.org/D16528

llvm-svn: 258675
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 2e7bbb2..397a0f2 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -1438,7 +1438,7 @@
   int DataWidth = isa<PointerType>(ScalarTy) ?
     DL.getPointerSizeInBits() : ScalarTy->getPrimitiveSizeInBits();
 
-  return (DataWidth >= 32 && ST->hasAVX2());
+  return (DataWidth >= 32 && ST->hasAVX());
 }
 
 bool X86TTIImpl::isLegalMaskedStore(Type *DataType) {