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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/55501] [F03] ICE using MERGE in constant expr
Date: Wed, 28 Nov 2012 11:04:00 -0000	[thread overview]
Message-ID: <bug-55501-4-MF0lXvs3ry@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-55501-4@http.gcc.gnu.org/bugzilla/>


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55501

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #9 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-11-28 11:03:34 UTC ---
(In reply to comment #7)
> -  if (tsource->expr_type != EXPR_CONSTANT
> -      || fsource->expr_type != EXPR_CONSTANT
> -      || mask->expr_type != EXPR_CONSTANT)
> +  if (mask->expr_type != EXPR_CONSTANT)
>      return NULL;

That makes sense: If mask is a constant scalar, tsource or fsource can be used.
That patch is pre-approved.


However, at some point one has also to simplify:
  MERGE([1,2],[11,22], [.true.,.false.])
and for that case, all arguments have to be gfc_is_constant_expr(). At least
Fortran 2008 requires that the processor can do such a simplification. (One
could also handle the special case that mask is an array of only .true. or only
.false.)


  parent reply	other threads:[~2012-11-28 11:04 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-28  0:27 [Bug fortran/55501] New: " longb at cray dot com
2012-11-28  0:37 ` [Bug fortran/55501] " longb at cray dot com
2012-11-28  9:16 ` [Bug fortran/55501] [F03] " janus at gcc dot gnu.org
2012-11-28  9:40 ` janus at gcc dot gnu.org
2012-11-28 10:11 ` janus at gcc dot gnu.org
2012-11-28 10:36 ` janus at gcc dot gnu.org
2012-11-28 10:49 ` burnus at gcc dot gnu.org
2012-11-28 10:50 ` janus at gcc dot gnu.org
2012-11-28 10:55 ` burnus at gcc dot gnu.org
2012-11-28 11:04 ` burnus at gcc dot gnu.org [this message]
2012-11-28 12:17 ` janus at gcc dot gnu.org
2012-11-28 12:22 ` janus at gcc dot gnu.org
2012-11-28 14:54 ` burnus at gcc dot gnu.org
2013-09-26  4:43 ` longb at cray dot com

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