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[Bug fortran/31593] Invariant DO loop variables and subroutines
- From: "tobi at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 Aug 2009 09:51:30 -0000
- Subject: [Bug fortran/31593] Invariant DO loop variables and subroutines
- References: <bug-31593-10391@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #31 from tobi at gcc dot gnu dot org 2009-08-15 09:51 -------
(In reply to comment #30)
> Escaping pointers for non-target dummy arguments can't happen in
> Fortran, can they? Could we just disable this (or ad a
> TREE_CANNOT_ALIAS flag to the middle end, which is on by default for
> Fortran)?
Yes. I've asked Richard about this on the mailing list. BTW with my patches,
aermodf90 runs ~8% faster, and the other polyhedron benchmarks also seem to
have consistently improved.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31593