[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised

["tkoenig at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572

--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2011-03-21 07:14:46 UTC ---
Author: tkoenig
Date: Mon Mar 21 07:14:42 2011
New Revision: 171207

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171207
Log:
2010-03-21  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/22572
    * gfortran.h (gfc_option_t) : Add
    flag_aggressive_function_elimination.
    (gfc_dep_compare_functions):  Add prototype.
    * lang.opt: Add faggressive-function-elimination.
    * invoke.texi: Document -faggressive-function-elimination.
    * frontend_passes (expr_array):  New static variable.
    (expr_size):  Likewise.
    (expr_count):  Likewise.
    (current_code):  Likewise.
    (current_ns):  Likewise.
    (gfc_run_passes):  Allocate and free space for expressions.
    (cfe_register_funcs):  New function.
    (create_var):  New function.
    (cfc_expr_0):  New function.
    (cfe_code):  New function.
    (optimize_namespace):  Invoke gfc_code_walker with cfe_code
    and cfe_expr_0.
    * dependency.c (gfc_dep_compare_functions):  New function.
    (gfc_dep_compare_expr):  Use it.
    * options.c (gfc_init_options):  Handle
    flag_aggressive_function_elimination.
    (gfc_handle_option):  Likewise.

2010-03-21  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/22572
    * gfortran.dg/function_optimize_1.f90:  New test.
    * gfortran.dg/function_optimize_2.f90:  New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/function_optimize_1.f90
    trunk/gcc/testsuite/gfortran.dg/function_optimize_2.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/dependency.c
    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