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Avoid dereferencing a NULL pointer.

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Fixes PR13943.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164778 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-09-27 16:34:19 +00:00
parent 7149ef0176
commit ddc26d8936
2 changed files with 36 additions and 1 deletions
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2
lib/CodeGen/LiveRangeEdit.cpp
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@ -87,7 +87,7 @@ bool LiveRangeEdit::allUsesAvailableAt(const MachineInstr *OrigMI,
// We can't remat physreg uses, unless it is a constant.
if (TargetRegisterInfo::isPhysicalRegister(MO.getReg())) {
if (MRI.isConstantPhysReg(MO.getReg(), VRM->getMachineFunction()))
if (MRI.isConstantPhysReg(MO.getReg(), *OrigMI->getParent()->getParent()))
continue;
return false;
}