diff options
Diffstat (limited to 'lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index b376e3d05f..ce8ebbc601 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/lib/CodeGen/MachineCSE.cpp @@ -91,7 +91,10 @@ bool MachineCSE::PerformTrivialCoalescing(MachineInstr *MI, unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx; if (TII->isMoveInstr(*DefMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) && TargetRegisterInfo::isVirtualRegister(SrcReg) && + MRI->getRegClass(SrcReg) == MRI->getRegClass(Reg) && !SrcSubIdx && !DstSubIdx) { + DEBUG(dbgs() << "Coalescing: " << *DefMI); + DEBUG(dbgs() << "*** to: " << *MI); MO.setReg(SrcReg); DefMI->eraseFromParent(); ++NumCoalesces; |