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[X86] Move code that replaces ISD::VSELECT with X86ISD::BLENDV from X86DAGToDAGISel::Select to PreprocessISelDAG

This commit is contained in:
Craig Topper 2020-04-11 14:05:27 -07:00
parent 4e86e5eedc
commit 21a7d08e72
1 changed files with 15 additions and 15 deletions
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30
llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -862,6 +862,21 @@ void X86DAGToDAGISel::PreprocessISelDAG() {
}
switch (N->getOpcode()) {
case ISD::VSELECT: {
// Replace VSELECT with non-mask conditions with with BLENDV.
if (N->getOperand(0).getValueType().getVectorElementType() == MVT::i1)
break;
assert(Subtarget->hasSSE41() && "Expected SSE4.1 support!");
SDValue Blendv =
CurDAG->getNode(X86ISD::BLENDV, SDLoc(N), N->getValueType(0),
N->getOperand(0), N->getOperand(1), N->getOperand(2));
--I;
CurDAG->ReplaceAllUsesWith(N, Blendv.getNode());
++I;
CurDAG->DeleteNode(N);
continue;
}
case ISD::FP_ROUND:
case ISD::STRICT_FP_ROUND:
case ISD::FP_TO_SINT:
@ -4531,21 +4546,6 @@ void X86DAGToDAGISel::Select(SDNode *Node) {
}
break;
case ISD::VSELECT: {
// Replace VSELECT with non-mask conditions with with BLENDV.
if (Node->getOperand(0).getValueType().getVectorElementType() == MVT::i1)
break;
assert(Subtarget->hasSSE41() && "Expected SSE4.1 support!");
SDValue Blendv = CurDAG->getNode(
X86ISD::BLENDV, SDLoc(Node), Node->getValueType(0), Node->getOperand(0),
Node->getOperand(1), Node->getOperand(2));
ReplaceNode(Node, Blendv.getNode());
SelectCode(Blendv.getNode());
// We already called ReplaceUses.
return;
}
case ISD::SRL:
if (matchBitExtract(Node))
return;