diff options
Diffstat (limited to 'llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index 3f124c00406..acbc911d6ac 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -1655,6 +1655,8 @@ SimpleRegisterCoalescing::TurnCopyIntoImpDef(MachineBasicBlock::iterator &I, LiveInterval &SrcInt = li_->getInterval(SrcReg); if (!SrcInt.empty()) return false; + if (!li_->hasInterval(DstReg)) + return false; LiveInterval &DstInt = li_->getInterval(DstReg); LiveInterval::iterator DstLR = DstInt.FindLiveRangeContaining(CopyIdx); DstInt.removeValNo(DstLR->valno); |
