switch question in recog.c

[Andrew MacLeod]

Is this really valid? Sure seems screwy to me.


in the function asm_operand_ok(), the code looks like:

<...>
        case 'X':
          result = 1;

        case 'g':
          if (general_operand (op, VOIDmode))
            result = 1;
          break;

        default:
          /* For all other letters, we first check for a register class,
             otherwise it is an EXTRA_CONSTRAINT.  */
          if (REG_CLASS_FROM_CONSTRAINT (c, constraint) != NO_REGS)
            {
            case 'r':
              if (GET_MODE (op) == BLKmode)
                break;
              if (register_operand (op, VOIDmode))
                result = 1;
            }
#ifdef EXTRA_CONSTRAINT_STR
          if (EXTRA_CONSTRAINT_STR (op, c, constraint))
            result = 1;
          if (EXTRA_MEMORY_CONSTRAINT (c, constraint))
<...>

Look at where the case 'r' is.. its inside the 'default:' case. Is that
really kosher?


Andrew