Fix pattern for memory form of PSHUFD for use with FP vectors to remove bitcast to an integer vector that normal code wouldn't have. Also remove bitcasts from code that turns splat vector loads into a shuffle as it was making the broken pattern necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149232 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index fb0d1ad..23347c2 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -4846,21 +4846,16 @@
int EltNo = (Offset - StartOffset) >> 2;
int NumElems = VT.getVectorNumElements();
- EVT CanonVT = VT.getSizeInBits() == 128 ? MVT::v4i32 : MVT::v8i32;
EVT NVT = EVT::getVectorVT(*DAG.getContext(), PVT, NumElems);
SDValue V1 = DAG.getLoad(NVT, dl, Chain, Ptr,
LD->getPointerInfo().getWithOffset(StartOffset),
false, false, false, 0);
- // Canonicalize it to a v4i32 or v8i32 shuffle.
SmallVector<int, 8> Mask;
for (int i = 0; i < NumElems; ++i)
Mask.push_back(EltNo);
- V1 = DAG.getNode(ISD::BITCAST, dl, CanonVT, V1);
- return DAG.getNode(ISD::BITCAST, dl, NVT,
- DAG.getVectorShuffle(CanonVT, dl, V1,
- DAG.getUNDEF(CanonVT),&Mask[0]));
+ return DAG.getVectorShuffle(NVT, dl, V1, DAG.getUNDEF(NVT), &Mask[0]);
}
return SDValue();