This can happen when widening a virtual register to a super-register
class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156867
91177308-0d34-0410-b5e6-
96231b3b80d8
if (TargetRegisterInfo::isVirtualRegister(NewReg))
mapVirtReg(NewReg, UV);
if (TargetRegisterInfo::isVirtualRegister(NewReg))
mapVirtReg(NewReg, UV);
- virtRegToEqClass.erase(OldReg);
+ if (OldReg != NewReg)
+ virtRegToEqClass.erase(OldReg);
do {
UV->renameRegister(OldReg, NewReg, SubIdx, TRI);
do {
UV->renameRegister(OldReg, NewReg, SubIdx, TRI);