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Simplify some code.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45830 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-01-10 08:22:10 +00:00
parent ba7e756c22
commit a07cec9e24
1 changed files with 2 additions and 8 deletions
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10
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -309,14 +309,8 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb,
// are actually two values in the live interval. Because of this we
// need to take the LiveRegion that defines this register and split it
// into two values.
MachineRegisterInfo& MRI = mbb->getParent()->getRegInfo();
unsigned lowIndex = ~0U;
for (MachineRegisterInfo::def_iterator DI = MRI.def_begin(interval.reg),
DE = MRI.def_end(); DI != DE; ++DI)
if (getInstructionIndex(&*DI) < lowIndex)
lowIndex = getInstructionIndex(&*DI);
unsigned DefIndex = getDefIndex(lowIndex);
assert(interval.containsOneValue());
unsigned DefIndex = getDefIndex(interval.getValNumInfo(0)->def);
unsigned RedefIndex = getDefIndex(MIIdx);
const LiveRange *OldLR = interval.getLiveRangeContaining(RedefIndex-1);