/// maps used by register allocator.
void ReplaceMachineInstrInMaps(MachineInstr *MI, MachineInstr *NewMI) {
Mi2IndexMap::iterator mi2i = mi2iMap_.find(MI);
- if (mi2i != mi2iMap_.end()) {
- i2miMap_[mi2i->second/InstrSlots::NUM] = NewMI;
- Mi2IndexMap::const_iterator it = mi2iMap_.find(MI);
- assert(it != mi2iMap_.end() && "Invalid instruction!");
- unsigned Index = it->second;
- mi2iMap_.erase(MI);
- mi2iMap_[NewMI] = Index;
- }
+ if (mi2i == mi2iMap_.end())
+ return;
+ i2miMap_[mi2i->second/InstrSlots::NUM] = NewMI;
+ Mi2IndexMap::iterator it = mi2iMap_.find(MI);
+ assert(it != mi2iMap_.end() && "Invalid instruction!");
+ unsigned Index = it->second;
+ mi2iMap_.erase(it);
+ mi2iMap_[NewMI] = Index;
}
BumpPtrAllocator& getVNInfoAllocator() { return VNInfoAllocator; }