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Deal with a few remaining spots that assume physical registers have live intervals.

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This fixes PR7601.

llvm-svn: 107955
This commit is contained in:
Jakob Stoklund Olesen 2010-07-09 04:35:38 +00:00
parent 144923dccf
commit 2be8142157
1 changed files with 4 additions and 2 deletions
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6
lib/CodeGen/SimpleRegisterCoalescing.cpp
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@ -482,6 +482,8 @@ bool SimpleRegisterCoalescing::RemoveCopyByCommutingDef(const CoalescerPair &CP,
// extended to the end of the existing live range defined by the copy.
SlotIndex DefIdx = UseIdx.getDefIndex();
const LiveRange *DLR = IntB.getLiveRangeContaining(DefIdx);
if (!DLR)
continue;
BHasPHIKill |= DLR->valno->hasPHIKill();
assert(DLR->valno->def == DefIdx);
BDeadValNos.push_back(DLR->valno);
@ -949,8 +951,8 @@ SimpleRegisterCoalescing::ShortenDeadCopySrcLiveRange(LiveInterval &li,
// Live-in to the function but dead. Remove it from entry live-in set.
if (mf_->begin()->isLiveIn(li.reg))
mf_->begin()->removeLiveIn(li.reg);
const LiveRange *LR = li.getLiveRangeContaining(CopyIdx);
removeRange(li, LR->start, LR->end, li_, tri_);
if (const LiveRange *LR = li.getLiveRangeContaining(CopyIdx))
removeRange(li, LR->start, LR->end, li_, tri_);
return removeIntervalIfEmpty(li, li_, tri_);
}