http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55501
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
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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.)
