Sign-extend CONST_INTs within their modes

[Alexandre Oliva]

On Apr 10, 2001, Richard Henderson <rth@redhat.com> wrote:

> On Wed, Apr 04, 2001 at 12:22:24PM -0300, Alexandre Oliva wrote:
>> @@ -1108,6 +1108,12 @@ general_operand (op, mode)
>> && GET_MODE_CLASS (mode) != MODE_PARTIAL_INT)
>> return 0;
>> 
>> +#ifdef ENABLE_CHECKING
>> +  if (GET_CODE (op) == CONST_INT
>> +      && trunc_int_for_mode (INTVAL (op), mode) != INTVAL (op))
>> +    return 0;
>> +#endif

> I don't think these should be ENABLE_CHECKING.  If we did that it
> could drastically change what patterns combine thinks it can create.

For the record, here's the modified recog.c patch.  The rest of the
patch is about to go in unchanged.