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Simplify logic now that r182490 is in place. No functional change intended.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182531 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier
2013-05-22 23:17:36 +00:00
parent b018bab0b8
commit 62c320a755
11 changed files with 46 additions and 50 deletions
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lib/CodeGen/DeadMachineInstructionElim.cpp
+2 -2
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@@ -154,11 +154,11 @@ bool DeadMachineInstructionElim::runOnMachineFunction(MachineFunction &MF) {
if (MO.isReg() && MO.isDef()) {
unsigned Reg = MO.getReg();
if (TargetRegisterInfo::isPhysicalRegister(Reg)) {
LivePhysRegs.reset(Reg);
// Check the subreg set, not the alias set, because a def
// of a super-register may still be partially live after
// this def.
for (MCSubRegIterator SR(Reg, TRI); SR.isValid(); ++SR)
for (MCSubRegIterator SR(Reg, TRI,/*IncludeSelf=*/true);
SR.isValid(); ++SR)
LivePhysRegs.reset(*SR);
}
} else if (MO.isRegMask()) {