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[X86] Remove unneeded temporary variable. NFC

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This Promote flag was alwasys set to true except in the default case. But in the default case we don't need to set PVT and can just return false.

llvm-svn: 328926
This commit is contained in:
Craig Topper 2018-04-01 06:29:21 +00:00
parent fe0ec8aeab
commit aa0e70c281
1 changed files with 2 additions and 6 deletions
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8
lib/Target/X86/X86ISelLowering.cpp
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@ -38717,14 +38717,12 @@ bool X86TargetLowering::IsDesirableToPromoteOp(SDValue Op, EVT &PVT) const {
if (VT != MVT::i16)
return false;
bool Promote = false;
bool Commute = false;
switch (Op.getOpcode()) {
default: break;
default: return false;
case ISD::SIGN_EXTEND:
case ISD::ZERO_EXTEND:
case ISD::ANY_EXTEND:
Promote = true;
break;
case ISD::SHL:
case ISD::SRL: {
@ -38732,7 +38730,6 @@ bool X86TargetLowering::IsDesirableToPromoteOp(SDValue Op, EVT &PVT) const {
// Look out for (store (shl (load), x)).
if (MayFoldLoad(N0) && MayFoldIntoStore(Op))
return false;
Promote = true;
break;
}
case ISD::ADD:
@ -38752,12 +38749,11 @@ bool X86TargetLowering::IsDesirableToPromoteOp(SDValue Op, EVT &PVT) const {
return false;
if (MayFoldLoad(N1) && (!isa<ConstantSDNode>(N0) || MayFoldIntoStore(Op)))
return false;
Promote = true;
}
}
PVT = MVT::i32;
return Promote;
return true;
}
bool X86TargetLowering::