[PATCH] Optimize SELECT CASE for character length 1
Tobias Burnus
tobias.burnus@physik.fu-berlin.de
Thu Jul 15 13:55:00 GMT 2010
On Thu, Jul 15, 2010 at 03:43:55PM +0200, Jakub Jelinek wrote:
> Here is an updated, so far untested, patch. I've noticed that select_struct
> should be GTY(()) marked to avoid it being eaten by GC, the other statics
> are just fields of that struct, so they are accessible from select_struct by
> GC.
>
> Ok for trunk if this passes bootstrap/regtest?
Yes. Thanks for the patch!
Tobias
> 2010-07-15 Jakub Jelinek <jakub@redhat.com>
>
> * trans.h (gfc_string_to_single_character): New prototype.
> * trans-expr.c (string_to_single_character): Renamed to ...
> (gfc_string_to_single_character): ... this. No longer static.
> (gfc_conv_scalar_char_value, gfc_build_compare_string,
> gfc_trans_string_copy): Adjust callers.
> * config-lang.in (gtfiles): Add fortran/trans-stmt.c.
> * trans-stmt.c: Include ggc.h and gt-fortran-trans-stmt.h.
> (select_struct): Move to toplevel, add GTY(()).
> (gfc_trans_character_select): Optimize SELECT CASE
> with character length 1.
>
> * gfortran.dg/select_char_2.f90: New test.
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