-/// GetAvailablePHITranslatedSubExpr - Return the value computed by
-/// PHITranslateSubExpr if it dominates PredBB, otherwise return null.
-Value *PHITransAddr::
-GetAvailablePHITranslatedSubExpr(Value *V, BasicBlock *CurBB,BasicBlock *PredBB,
- const DominatorTree &DT) const {
- PHITransAddr Tmp(V, TD);
- Tmp.PHITranslateValue(CurBB, PredBB);
-
- // See if PHI translation succeeds.
- V = Tmp.getAddr();
-
- // Make sure the value is live in the predecessor.
- if (Instruction *Inst = dyn_cast_or_null<Instruction>(V))
- if (!DT.dominates(Inst->getParent(), PredBB))
- return 0;
- return V;
-}
+ if (DT) {
+ // Make sure the value is live in the predecessor.
+ if (Instruction *Inst = dyn_cast_or_null<Instruction>(Addr))
+ if (!DT->dominates(Inst->getParent(), PredBB))
+ Addr = 0;
+ }