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Make sure constant bitwidth is <= 64 bit before calling getSExtValue().

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160350 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2012-07-17 07:47:50 +00:00
parent 70e10d3fe4
commit b4d4959fdd
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/SelectionDAG/TargetLowering.cpp
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@ -2323,7 +2323,8 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,
}
}
if (!isLegalICmpImmediate(C1.getSExtValue())) {
if (C1.getMinSignedBits() <= 64 &&
!isLegalICmpImmediate(C1.getSExtValue())) {
// (X & -256) == 256 -> (X >> 8) == 1
if ((Cond == ISD::SETEQ || Cond == ISD::SETNE) &&
N0.getOpcode() == ISD::AND && N0.hasOneUse()) {