[Bug fortran/48448] Implement -f(no-)frontend-optimization

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48448

--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2011-04-08 21:46:11 UTC ---
Author: tkoenig
Date: Fri Apr  8 21:46:08 2011
New Revision: 172215

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172215
Log:
2011-04-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/48448
    * gfortran.h (gfc_option_t):  Add warn_function_elimination and
    flag_frontend_optimize.
    * lang.opt (Wfunction-elimination):  Add.
    (ffrontend-optimize):  Add.
    * invoke.texi:  Add documentation for -Wfunction-elimination
    and -ffrontend-optimize.  Add -faggressive-function-elimination
    to list of code generation options.
    * frontend-passes.c (gfc_run_passes):  Run optimizations if
    flag_frontend_optimize is set.
    (warn_function_elimination):  New function.
    (cfe_expr_0):  Call it if requested to do so.
    * options.c (gfc_init_options):  Initiate warn_function_elimination
    and flag_frontend_optimize.
    (gfc_post_options):  Set flag_frontend_optimize if not specified
    by user, depending on the optimization level.
    (gfc_handle_option):  Handle -Wfunction-elimination and
    -ffrontend-optimize.

2011-04-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/48448
    * gfortran.dg/function_optimize_5.f90:  New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/function_optimize_5.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/frontend-passes.c
    trunk/gcc/fortran/gfortran.h
    trunk/gcc/fortran/invoke.texi
    trunk/gcc/fortran/lang.opt
    trunk/gcc/fortran/options.c
    trunk/gcc/testsuite/ChangeLog