[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 Thomas Koenig changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #9 from Thomas Koenig 2011-05-14 09:50:46 UTC --- Fixed on trunk. Closing.
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 --- Comment #8 from Thomas Koenig 2011-05-14 09:48:11 UTC --- Author: tkoenig Date: Sat May 14 09:48:08 2011 New Revision: 173752 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173752 Log: 2011-05-14 Thomas Koenig PR fortran/22572 * frontend-passes.c (cfe_register_funcs): Also register functions for potential elimination if the rank is > 0, the shape is unknown and reallocate on assignment is active. (create_var): For rank > 0 functions with unknown shape, create an allocatable temporary. 2011-05-14 Thomas Koenig PR fortran/22572 * function_optimize_7.f90: New test case. Added: trunk/gcc/testsuite/gfortran.dg/function_optimize_7.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/frontend-passes.c trunk/gcc/testsuite/ChangeLog
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 --- Comment #7 from Thomas Koenig 2011-04-22 15:57:01 UTC --- We should generate function optmatmul (a, b, c, m, n, count) implicit none integer, intent(in) :: m, n, count double precision :: optmatmul(m, n) double precision, intent(in) :: a(m, count), b(count, n), c(m, n) block double precision, dimension(size(a,1), size(b,2)) :: tmp tmp = matmul(a,b) optmatmul = tmp / (1 + tmp) end block end function optmatmul I forsee lots of special-casing here...
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 --- Comment #6 from Thomas Koenig 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 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 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
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 Tobias Burnus changed: What|Removed |Added CC||burnus at gcc dot gnu.org --- Comment #5 from Tobias Burnus 2011-03-08 07:19:40 UTC --- Definitely after 4.6 (which presumably branched this week). As it is only a missed optimization, I would not even back port it. Otherwise: Nice patch!
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 Jerry DeLisle changed: What|Removed |Added CC||jvdelisle at gcc dot ||gnu.org --- Comment #4 from Jerry DeLisle 2011-03-08 03:14:18 UTC --- I think this is too close to 4.6 release, but definitely 4.7 and then with some time, a possible backport to 4.6. If others feel it is safe, please say so.
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 Thomas Koenig changed: What|Removed |Added Attachment #23575|0 |1 is obsolete|| --- Comment #3 from Thomas Koenig 2011-03-07 21:02:49 UTC --- Created attachment 23577 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23577 Updated patch This one doesn't cause any regressions.
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572 Thomas Koenig changed: What|Removed |Added Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |tkoenig at gcc dot gnu.org |gnu.org | --- Comment #2 from Thomas Koenig 2011-03-07 19:55:25 UTC --- Created attachment 23575 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23575 proposed patch (partial) Here is a patch which optimizes the case for arguments of matmul which have known sizes at compile time.
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-21 05:08 --- Confirmed. -- What|Removed |Added Status|UNCONFIRMED |NEW Ever Confirmed||1 Last reconfirmed|-00-00 00:00:00 |2005-07-21 05:08:29 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
-- What|Removed |Added Keywords||missed-optimization http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572
[Bug fortran/22572] Double occurrence of matmul intrinsic not optimised
-- What|Removed |Added Severity|normal |enhancement http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22572
