This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: RFA: Revamp fortran array types
Michael Matz wrote:
[ Two types that are both basically REAL(8) have different alias sets ]
Okay, after some pondering we decided that the vectorizer should be fixed
to not rely on TYPE_MAIN_VARIANT to establish type similarity but rather
some variant of useless_type_conversion_p. I'd rather do this in a
followup to not clutter the current patch even more, though.
Well, the whole "variables of different types can't alias each other" is
a C invention - so perhaps we can just turn it off while compiling
Fortran :-)
[ OK, that's not totally serious ]
BTW, does everyone realize that - as soon as link time optimizations are
the default - we can throw out all these nonsense, as it is then
perfectly (though perhaps costly) determinable whether two names point
to the same memory location(s) ?
Cheers,
--
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
At home: http://moene.org/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html