Transforms/InstCombine/InstCombineSimplifyDemanded.cpp

598         Value *VarX; ConstantInt *C1;
599         if (match(I->getOperand(0), m_Shr(m_Value(VarX), m_ConstantInt(C1)))) {
852   Value *VarX = Shr->getOperand(0);
853   Type *Ty = VarX->getType();
882       return VarX;
889       Constant *Amt = ConstantInt::get(VarX->getType(), ShlAmt - ShrAmt);
890       New = BinaryOperator::CreateShl(VarX, Amt);
895       Constant *Amt = ConstantInt::get(VarX->getType(), ShrAmt - ShlAmt);
896       New = isLshr ? BinaryOperator::CreateLShr(VarX, Amt) :
897                      BinaryOperator::CreateAShr(VarX, Amt);