diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 5c9715b454a..47631e99b99 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -34646,7 +34646,7 @@ static bool hasBZHI(const X86Subtarget &Subtarget, MVT VT) { // It's equivalent to performing bzhi (zero high bits) on the input, with the // same index of the load. static SDValue combineAndLoadToBZHI(SDNode *Node, SelectionDAG &DAG, - const X86Subtarget &Subtarget) { + const X86Subtarget &Subtarget) { MVT VT = Node->getSimpleValueType(0); SDLoc dl(Node); @@ -34701,15 +34701,16 @@ static SDValue combineAndLoadToBZHI(SDNode *Node, SelectionDAG &DAG, // <- (and (srl 0xFFFFFFFF, (sub 32, idx))) // that will be replaced with one bzhi instruction. SDValue Inp = (i == 0) ? Node->getOperand(1) : Node->getOperand(0); - SDValue SizeC = DAG.getConstant(VT.getSizeInBits(), dl, VT); + SDValue SizeC = DAG.getConstant(VT.getSizeInBits(), dl, MVT::i32); // Get the Node which indexes into the array. SDValue Index = getIndexFromUnindexedLoad(Ld); if (!Index) return SDValue(); - Index = DAG.getZExtOrTrunc(Index, dl, VT); + Index = DAG.getZExtOrTrunc(Index, dl, MVT::i32); - SDValue Sub = DAG.getNode(ISD::SUB, dl, VT, SizeC, Index); + SDValue Sub = DAG.getNode(ISD::SUB, dl, MVT::i32, SizeC, Index); + Sub = DAG.getNode(ISD::TRUNCATE, dl, MVT::i8, Sub); SDValue AllOnes = DAG.getAllOnesConstant(dl, VT); SDValue LShr = DAG.getNode(ISD::SRL, dl, VT, AllOnes, Sub); |
