diff options
Diffstat (limited to 'lib/CodeGen/TargetInstrInfo.cpp')
| -rw-r--r-- | lib/CodeGen/TargetInstrInfo.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/CodeGen/TargetInstrInfo.cpp b/lib/CodeGen/TargetInstrInfo.cpp index db925f803db..bd90ed5b55b 100644 --- a/lib/CodeGen/TargetInstrInfo.cpp +++ b/lib/CodeGen/TargetInstrInfo.cpp @@ -1151,6 +1151,8 @@ bool TargetInstrInfo::getRegSequenceInputs( for (unsigned OpIdx = 1, EndOpIdx = MI.getNumOperands(); OpIdx != EndOpIdx; OpIdx += 2) { const MachineOperand &MOReg = MI.getOperand(OpIdx); + if (MOReg.isUndef()) + continue; const MachineOperand &MOSubIdx = MI.getOperand(OpIdx + 1); assert(MOSubIdx.isImm() && "One of the subindex of the reg_sequence is not an immediate"); @@ -1174,6 +1176,8 @@ bool TargetInstrInfo::getExtractSubregInputs( // Def = EXTRACT_SUBREG v0.sub1, sub0. assert(DefIdx == 0 && "EXTRACT_SUBREG only has one def"); const MachineOperand &MOReg = MI.getOperand(1); + if (MOReg.isUndef()) + return false; const MachineOperand &MOSubIdx = MI.getOperand(2); assert(MOSubIdx.isImm() && "The subindex of the extract_subreg is not an immediate"); @@ -1198,6 +1202,8 @@ bool TargetInstrInfo::getInsertSubregInputs( assert(DefIdx == 0 && "INSERT_SUBREG only has one def"); const MachineOperand &MOBaseReg = MI.getOperand(1); const MachineOperand &MOInsertedReg = MI.getOperand(2); + if (MOInsertedReg.isUndef()) + return false; const MachineOperand &MOSubIdx = MI.getOperand(3); assert(MOSubIdx.isImm() && "One of the subindex of the reg_sequence is not an immediate"); |