case CR_Replace:
// This value takes precedence over the value in Other.LI.
LIS->pruneValue(&Other.LI, Def, &EndPoints);
+ // Remove <def,read-undef> flags. This def is now a partial redef.
+ if (!Def.isBlock())
+ for (MIOperands MO(Indexes->getInstructionFromIndex(Def));
+ MO.isValid(); ++MO)
+ if (MO->isReg() && MO->isDef() && MO->getReg() == LI.reg)
+ MO->setIsUndef(false);
DEBUG(dbgs() << "\t\tpruned " << PrintReg(Other.LI.reg) << " at " << Def
<< ": " << Other.LI << '\n');
break;