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Reset isUndef when removing subreg from a def operand

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llvm-svn: 279437
This commit is contained in:
Krzysztof Parzyszek 2016-08-22 14:50:12 +00:00
parent dc666729a5
commit 8a69174992
1 changed files with 2 additions and 0 deletions
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2
lib/CodeGen/MachineInstr.cpp
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@ -93,6 +93,8 @@ void MachineOperand::substPhysReg(unsigned Reg, const TargetRegisterInfo &TRI) {
// Note that getSubReg() may return 0 if the sub-register doesn't exist.
// That won't happen in legal code.
setSubReg(0);
if (isDef())
setIsUndef(false);
}
setReg(Reg);
}