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Switch some getAliasSet clients to MCRegAliasIterator.

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MCRegAliasIterator can optionally visit the register itself, allowing
for simpler code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157837 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-06-01 20:36:54 +00:00
parent 73c2f7f5ed
commit f152fe8d48
8 changed files with 46 additions and 99 deletions
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lib/CodeGen/DeadMachineInstructionElim.cpp
+2 -4
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@@ -187,10 +187,8 @@ bool DeadMachineInstructionElim::runOnMachineFunction(MachineFunction &MF) {
if (MO.isReg() && MO.isUse()) {
unsigned Reg = MO.getReg();
if (TargetRegisterInfo::isPhysicalRegister(Reg)) {
LivePhysRegs.set(Reg);
for (const uint16_t *AliasSet = TRI->getAliasSet(Reg);
*AliasSet; ++AliasSet)
LivePhysRegs.set(*AliasSet);
for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI)
LivePhysRegs.set(*AI);
}
}
}