Transforms/InstCombine/InstCombineShifts.cpp

544     uint32_t ShiftAmt2 = Op1->getLimitedValue(TypeBits);
545     assert(ShiftAmt2 != 0 && "Should have been simplified earlier");
553       uint32_t AmtSum = ShiftAmt1+ShiftAmt2;   // Fold into one big shift.
566     if (ShiftAmt1 == ShiftAmt2) {
574     } else if (ShiftAmt1 < ShiftAmt2) {
575       uint32_t ShiftDiff = ShiftAmt2-ShiftAmt1;
606         APInt Mask(APInt::getLowBitsSet(TypeBits, TypeBits - ShiftAmt2));
625       assert(ShiftAmt2 < ShiftAmt1);
626       uint32_t ShiftDiff = ShiftAmt1-ShiftAmt2;
654         APInt Mask(APInt::getLowBitsSet(TypeBits, TypeBits - ShiftAmt2));