[PATCH, fortran] PR20441 -finit-local-zero

[Asher Langton]

Hi all,

Here's an updated patch.  I've added -finit-character=<n>, where 0 <=
n <= 127 is an ASCII value.  Derived types aren't initialized, but
I've documented this in the manual.  I've added a test that checks
initialization of SAVE'd variables.  This has been bootstrapped (+make
pdf) and regression tested on x86_64-unknown-linux-gnu.

I won't have reliable internet access for the next couple of days, but
I'll be back online by Monday evening.


-Asher

2007-08-31  Asher Langton  <langton2@llnl.gov>

	PR fortran/20441
        * gfortran.h : Add init_local_* enums and init_flag_* flags to
	gfc_option_t.
	* lang.opt: Add -finit-local-zero, -finit-real, -finit-integer,
	-finit-character, and -finit-logical flags.
	* invoke.texi: Document new options.
	* resolve.c (build_init_assign): New function.
	(apply_init_assign): Move part of function into build_init_assign.
	(build_default_init_expr): Build local initializer (-finit-*).
	(apply_default_init_local): Apply local initializer (-finit-*).
	(resolve_fl_variable): Try to add local initializer (-finit-*).
	* options.c (gfc_init_options, gfc_handle_option,
	gfc_post_options): Handle -finit-local-zero, -finit-real,
	-finit-integer, -finit-character, and -finit-logical flags.

2007-08-31  Asher Langton  <langton2@llnl.gov>

	PR fortran/20441
	* gfortran.dg/init_flag_1.f90: New.
	* gfortran.dg/init_flag_2.f90: New.
	* gfortran.dg/init_flag_3.f90: New.
	* gfortran.dg/init_flag_4.f90: New.
	* gfortran.dg/init_flag_5.f90: New.
	* gfortran.dg/init_flag_6.f90: New.
	* gfortran.dg/init_flag_7.f90: New.





On 8/17/07, Asher Langton <langton2@llnl.gov> wrote:
> :ADDPATCH fortran:
>
>
> Hi all,
>
> Here's a patch to add -finit-local-zero, as well as some finer-grained
> options.  I have a working version of the runtime-controlled
> initialization as discussed previously, but it still needs to be
> cleaned up a bit, so I'll submit it as a separate patch:
>
> http://gcc.gnu.org/ml/fortran/2007-06/msg00028.html
>
> I've bootstrapped and regression tested this on x86_64-linux.
> Everything passes in the ordinary regression tests, and with
> RUNTESTFLAGS="--tool_opts -finit-local-zero" added, the only failures
> are tests that invoke cc1 ("cc1: warning: command line option
> "-finit-local-zero" is valid for Fortran but not for C").
>
> -Asher
>
>
> 2007-08-17  Asher Langton  <langton2@llnl.gov>
>
>         PR fortran/20441
>         * gfortran.h : Add init_local_* enums and init_flag_* flags to
>         gfc_option_t.
>         * lang.opt: Add -finit-local-zero, -finit-real, -finit-integer,
>         and -finit-logical flags.
>         * invoke.texi: Document new options.
>         * resolve.c (build_init_assign): New function.
>         (apply_init_assign): Move part of function into build_init_assign.
>         (build_default_init_expr): Build local initializer (-finit-*).
>         (apple_default_init_local): Apply local initializer (-finit-*).
>         (resolve_fl_variable): Try to add local initializer (-finit-*).
>         * options.c (gfc_init_options, gfc_handle_option): Handle
>         -finit-local-zero, -finit-real, -finit-integer, -finit-logical
>         flags, and -finit-character flags.
>
> 2007-08-17  Asher Langton  <langton2@llnl.gov>
>
>         PR fortran/20441
>         * gfortran.dg/init_flag_1.f90: New.
>         * gfortran.dg/init_flag_2.f90: New.
>         * gfortran.dg/init_flag_3.f90: New.
>         * gfortran.dg/init_flag_4.f90: New.
>         * gfortran.dg/init_flag_5.f90: New.
>
>
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