On Wed, Feb 01, 2017 at 09:32:46AM +0100, Eric Botcazou wrote:
> > all BOOLEAN_TYPEs but Adas have precision one and are unsigned
> > (their TYPE_SIZE may vary though).
Oops, thanks for the correction. That said, the prec > 1 BOOLEAN_TYPE
aren't compatible with the prec 1 BOOLEAN_TYPE, so the intent of the
predicate is to support precision 1 BOOLEAN_TYPE and anything
types_compatible_p with it, or precision > 1 BOOLEAN_TYPEs (where
anything types_compatible_p with it must be BOOLEAN_TYPE with the
same precision and signedness).
> /* Builds a boolean type of precision PRECISION.
> Used for boolean vectors to choose proper vector element size. */
> tree
> build_nonstandard_boolean_type (unsigned HOST_WIDE_INT precision)
> {
> tree type;
>
> if (precision <= MAX_BOOL_CACHED_PREC)
> {
> type = nonstandard_boolean_type_cache[precision];
> if (type)
> return type;
> }
>
> type = make_node (BOOLEAN_TYPE);
> TYPE_PRECISION (type) = precision;
> fixup_signed_type (type);
>
> if (precision <= MAX_INT_CACHED_PREC)
> nonstandard_boolean_type_cache[precision] = type;
>
> return type;
> }
Jakub
