recommit 344472 after fixing build failure on ARM and PPC.

llvm-svn: 344475
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index 96e751e..a16de89 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -659,11 +659,12 @@
                                                unsigned Factor,
                                                ArrayRef<unsigned> Indices,
                                                unsigned Alignment,
-                                               unsigned AddressSpace) {
+                                               unsigned AddressSpace,
+                                               bool IsMasked) {
   assert(Factor >= 2 && "Invalid interleave factor");
   assert(isa<VectorType>(VecTy) && "Expect a vector type");
 
-  if (Factor <= TLI->getMaxSupportedInterleaveFactor()) {
+  if (!IsMasked && Factor <= TLI->getMaxSupportedInterleaveFactor()) {
     unsigned NumElts = VecTy->getVectorNumElements();
     auto *SubVecTy = VectorType::get(VecTy->getScalarType(), NumElts / Factor);
 
@@ -676,7 +677,7 @@
   }
 
   return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
-                                           Alignment, AddressSpace);
+                                           Alignment, AddressSpace, IsMasked);
 }
 
 int AArch64TTIImpl::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) {