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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-09 04:35:38 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-09 04:35:38 +0000 |
| commit | 846a31881f85ab9ad836315a8be4532a26c7335c (patch) | |
| tree | 9c88244d15651531c67bb931e4b1f29d7ebbc8e6 /lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | be95c15903c80b5bc340a9308d1fa334235e23e7 (diff) | |
| download | external_llvm-846a31881f85ab9ad836315a8be4532a26c7335c.tar.gz external_llvm-846a31881f85ab9ad836315a8be4532a26c7335c.tar.bz2 external_llvm-846a31881f85ab9ad836315a8be4532a26c7335c.zip | |
Deal with a few remaining spots that assume physical registers have live intervals.
This fixes PR7601.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107955 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 2e7e6f8b15..87337c9676 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -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_); } |