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Remove some redundant tests.

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An empty list is not represented as a null pointer. Let TRI do its own
shortcuts.

llvm-svn: 157702
This commit is contained in:
Jakob Stoklund Olesen 2012-05-30 18:38:56 +00:00
parent 3578c169bf
commit 0bc2a65aad
1 changed files with 1 additions and 3 deletions
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4
lib/CodeGen/MachineInstr.cpp
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@ -1766,9 +1766,7 @@ bool MachineInstr::addRegisterDead(unsigned IncomingReg,
// There exists a super-register that's marked dead.
if (RegInfo->isSuperRegister(IncomingReg, Reg))
return true;
if (RegInfo->getSubRegisters(IncomingReg) &&
RegInfo->getSuperRegisters(Reg) &&
RegInfo->isSubRegister(IncomingReg, Reg))
if (RegInfo->isSubRegister(IncomingReg, Reg))
DeadOps.push_back(i);
}
}