diff options
Diffstat (limited to 'lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index 84c3d717f7..cfe50408e6 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/lib/CodeGen/MachineCSE.cpp @@ -112,6 +112,7 @@ bool MachineCSE::PerformTrivialCoalescing(MachineInstr *MI, DEBUG(dbgs() << "Coalescing: " << *DefMI); DEBUG(dbgs() << "*** to: " << *MI); MO.setReg(SrcReg); + MRI->clearKillFlags(SrcReg); if (NewRC != SRC) MRI->setRegClass(SrcReg, NewRC); DefMI->eraseFromParent(); @@ -365,8 +366,10 @@ bool MachineCSE::ProcessBlock(MachineBasicBlock *MBB) { // Actually perform the elimination. if (DoCSE) { - for (unsigned i = 0, e = CSEPairs.size(); i != e; ++i) + for (unsigned i = 0, e = CSEPairs.size(); i != e; ++i) { MRI->replaceRegWith(CSEPairs[i].first, CSEPairs[i].second); + MRI->clearKillFlags(CSEPairs[i].second); + } MI->eraseFromParent(); ++NumCSEs; } else { |