diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 218487e94b..969a05c580 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -978,7 +978,7 @@ static bool hasLiveCondCodeDef(MachineInstr *MI) { MachineInstr * X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, MachineBasicBlock::iterator &MBBI, - LiveVariables &LV) const { + LiveVariables *LV) const { MachineInstr *MI = MBBI; // All instructions input are two-addr instructions. Get the known operands. unsigned Dest = MI->getOperand(0).getReg(); @@ -1066,10 +1066,12 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, MFI->insert(MBBI, Undef); MFI->insert(MBBI, Ins); // Insert the insert_subreg - LV.instructionChanged(MI, NewMI); // Update live variables - LV.addVirtualRegisterKilled(leaInReg, NewMI); + if (LV) { + LV->instructionChanged(MI, NewMI); // Update live variables + LV->addVirtualRegisterKilled(leaInReg, NewMI); + } MFI->insert(MBBI, NewMI); // Insert the new inst - LV.addVirtualRegisterKilled(leaOutReg, Ext); + if (LV) LV->addVirtualRegisterKilled(leaOutReg, Ext); MFI->insert(MBBI, Ext); // Insert the extract_subreg return Ext; } else { @@ -1180,7 +1182,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, if (!NewMI) return 0; NewMI->copyKillDeadInfo(MI); - LV.instructionChanged(MI, NewMI); // Update live variables + if (LV) LV->instructionChanged(MI, NewMI); // Update live variables MFI->insert(MBBI, NewMI); // Insert the new inst return NewMI; } |