1132 static bool canEvaluateZExtd(Value *V, Type *Ty, unsigned &BitsToClear,  in canEvaluateZExtd()  argument
1134   BitsToClear = 0;  in canEvaluateZExtd()
1153     if (!canEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI) ||  in canEvaluateZExtd()
1157     if (BitsToClear == 0 && Tmp == 0)  in canEvaluateZExtd()
1167                                APInt::getHighBitsSet(VSize, BitsToClear),  in canEvaluateZExtd()
1172           BitsToClear = 0;  in canEvaluateZExtd()
1185       if (!canEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI))  in canEvaluateZExtd()
1188       BitsToClear = ShiftAmt < BitsToClear ? BitsToClear - ShiftAmt : 0;  in canEvaluateZExtd()
1198       if (!canEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI))  in canEvaluateZExtd()
1200       BitsToClear += Amt->getZExtValue();  in canEvaluateZExtd()
1201       if (BitsToClear > V->getType()->getScalarSizeInBits())  in canEvaluateZExtd()
1202         BitsToClear = V->getType()->getScalarSizeInBits();  in canEvaluateZExtd()
1210         !canEvaluateZExtd(I->getOperand(2), Ty, BitsToClear, IC, CxtI) ||  in canEvaluateZExtd()
1213         Tmp != BitsToClear)  in canEvaluateZExtd()
1222     if (!canEvaluateZExtd(PN->getIncomingValue(0), Ty, BitsToClear, IC, CxtI))  in canEvaluateZExtd()
1228           Tmp != BitsToClear)  in canEvaluateZExtd()
1252   unsigned BitsToClear;  in visitZExt()  local
1254       canEvaluateZExtd(Src, DestTy, BitsToClear, *this, &CI)) {  in visitZExt()
1255     assert(BitsToClear <= SrcTy->getScalarSizeInBits() &&  in visitZExt()
1271     uint32_t SrcBitsKept = SrcTy->getScalarSizeInBits()-BitsToClear;  in visitZExt()