diff options
Diffstat (limited to 'lib/CodeGen/OptimizePHIs.cpp')
| -rw-r--r-- | lib/CodeGen/OptimizePHIs.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/OptimizePHIs.cpp b/lib/CodeGen/OptimizePHIs.cpp index 2717d4d..1613fe2 100644 --- a/lib/CodeGen/OptimizePHIs.cpp +++ b/lib/CodeGen/OptimizePHIs.cpp @@ -107,6 +107,11 @@ bool OptimizePHIs::IsSingleValuePHICycle(MachineInstr *MI, SrcSubIdx == 0 && DstSubIdx == 0 && TargetRegisterInfo::isVirtualRegister(MvSrcReg)) SrcMI = MRI->getVRegDef(MvSrcReg); + else if (SrcMI && SrcMI->isCopy() && + !SrcMI->getOperand(0).getSubReg() && + !SrcMI->getOperand(1).getSubReg() && + TargetRegisterInfo::isVirtualRegister(SrcMI->getOperand(1).getReg())) + SrcMI = MRI->getVRegDef(SrcMI->getOperand(1).getReg()); if (!SrcMI) return false; |
