diff options
| -rw-r--r-- | lib/CodeGen/RegisterCoalescer.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp index 1fcc24d7e0..990633440e 100644 --- a/lib/CodeGen/RegisterCoalescer.cpp +++ b/lib/CodeGen/RegisterCoalescer.cpp @@ -1091,6 +1091,11 @@ bool RegisterCoalescer::joinReservedPhysReg(CoalescerPair &CP) { // register live range doesn't need to be accurate as long as all the // defs are there. + // Delete the identity copy. + MachineInstr *CopyMI = MRI->getVRegDef(RHS.reg); + LIS->RemoveMachineInstrFromMaps(CopyMI); + CopyMI->eraseFromParent(); + // We don't track kills for reserved registers. MRI->clearKillFlags(CP.getSrcReg()); |