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Clean up some loop logic.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90481 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2009-12-03 20:49:10 +00:00
parent 5d11eb0ed5
commit f4811a9694
1 changed files with 6 additions and 14 deletions
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20
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -159,12 +159,10 @@ bool LiveIntervals::conflictsWithPhysRegDef(const LiveInterval &li,
end = I->end.getPrevSlot().getBaseIndex().getNextIndex(); end = I->end.getPrevSlot().getBaseIndex().getNextIndex();
index != end; index != end;
index = index.getNextIndex()) { index = index.getNextIndex()) {
// skip deleted instructions
while (index != end && !getInstructionFromIndex(index))
index = index.getNextIndex();
if (index == end) break;
MachineInstr *MI = getInstructionFromIndex(index); MachineInstr *MI = getInstructionFromIndex(index);
if (!MI)
continue; // skip deleted instructions
unsigned SrcReg, DstReg, SrcSubReg, DstSubReg; unsigned SrcReg, DstReg, SrcSubReg, DstSubReg;
if (tii_->isMoveInstr(*MI, SrcReg, DstReg, SrcSubReg, DstSubReg)) if (tii_->isMoveInstr(*MI, SrcReg, DstReg, SrcSubReg, DstSubReg))
if (SrcReg == li.reg || DstReg == li.reg) if (SrcReg == li.reg || DstReg == li.reg)
@ -201,15 +199,9 @@ bool LiveIntervals::conflictsWithPhysRegRef(LiveInterval &li,
end = I->end.getPrevSlot().getBaseIndex().getNextIndex(); end = I->end.getPrevSlot().getBaseIndex().getNextIndex();
index != end; index != end;
index = index.getNextIndex()) { index = index.getNextIndex()) {
// Skip deleted instructions. MachineInstr *MI = getInstructionFromIndex(index);
MachineInstr *MI = 0; if (!MI)
while (index != end) { continue; // skip deleted instructions
MI = getInstructionFromIndex(index);
if (MI)
break;
index = index.getNextIndex();
}
if (index == end) break;
if (JoinedCopies.count(MI)) if (JoinedCopies.count(MI))
continue; continue;