diff options
Diffstat (limited to 'lib/CodeGen/LiveRangeEdit.cpp')
| -rw-r--r-- | lib/CodeGen/LiveRangeEdit.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/CodeGen/LiveRangeEdit.cpp b/lib/CodeGen/LiveRangeEdit.cpp index 52e366cb7d..4ecb2d9a60 100644 --- a/lib/CodeGen/LiveRangeEdit.cpp +++ b/lib/CodeGen/LiveRangeEdit.cpp @@ -33,8 +33,10 @@ void LiveRangeEdit::Delegate::anchor() { } LiveInterval &LiveRangeEdit::createFrom(unsigned OldReg) { unsigned VReg = MRI.createVirtualRegister(MRI.getRegClass(OldReg)); - VRM->grow(); - VRM->setIsSplitFromReg(VReg, VRM->getOriginal(OldReg)); + if (VRM) { + VRM->grow(); + VRM->setIsSplitFromReg(VReg, VRM->getOriginal(OldReg)); + } LiveInterval &LI = LIS.getOrCreateInterval(VReg); newRegs_.push_back(&LI); return LI; @@ -270,8 +272,6 @@ void LiveRangeEdit::eliminateDeadDefs(SmallVectorImpl<MachineInstr*> &Dead, delegate_->LRE_WillShrinkVirtReg(LI->reg); if (!LIS.shrinkToUses(LI, &Dead)) continue; - if (!VRM) - continue; // Don't create new intervals for a register being spilled. // The new intervals would have to be spilled anyway so its not worth it. @@ -295,7 +295,7 @@ void LiveRangeEdit::eliminateDeadDefs(SmallVectorImpl<MachineInstr*> &Dead, if (NumComp <= 1) continue; ++NumFracRanges; - bool IsOriginal = VRM->getOriginal(LI->reg) == LI->reg; + bool IsOriginal = VRM && VRM->getOriginal(LI->reg) == LI->reg; DEBUG(dbgs() << NumComp << " components: " << *LI << '\n'); SmallVector<LiveInterval*, 8> Dups(1, LI); for (unsigned i = 1; i != NumComp; ++i) { |