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* [Bug fortran/57802] New: Waste work in set_loop_bounds()
@ 2013-07-03 16:25 pchang9 at cs dot wisc.edu
  2013-07-03 20:13 ` [Bug fortran/57802] Wasted " pchang9 at cs dot wisc.edu
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: pchang9 at cs dot wisc.edu @ 2013-07-03 16:25 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57802

            Bug ID: 57802
           Summary: Waste work in set_loop_bounds()
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pchang9 at cs dot wisc.edu
                CC: nistor1 at illinois dot edu

The problem appears in revision 200588 in version 4.9.

In method "set_loop_bounds()" in gcc/fortran/trans-array.c, the loop on line
4456 should break immediately after "nonoptional_arr" is set to "true". All the
iterations after "nonoptional_arr" set to "true" do not perform any useful
work, at best they just set "nonoptional_arr" again to "true".


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug fortran/57802] Wasted work in set_loop_bounds()
  2013-07-03 16:25 [Bug fortran/57802] New: Waste work in set_loop_bounds() pchang9 at cs dot wisc.edu
@ 2013-07-03 20:13 ` pchang9 at cs dot wisc.edu
  2013-07-23 21:50 ` pchang9 at cs dot wisc.edu
  2013-07-29 19:10 ` law at redhat dot com
  2 siblings, 0 replies; 4+ messages in thread
From: pchang9 at cs dot wisc.edu @ 2013-07-03 20:13 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57802

--- Comment #1 from Po-Chun Chang <pchang9 at cs dot wisc.edu> ---
Created attachment 30435
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30435&action=edit
Suggested patch


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug fortran/57802] Wasted work in set_loop_bounds()
  2013-07-03 16:25 [Bug fortran/57802] New: Waste work in set_loop_bounds() pchang9 at cs dot wisc.edu
  2013-07-03 20:13 ` [Bug fortran/57802] Wasted " pchang9 at cs dot wisc.edu
@ 2013-07-23 21:50 ` pchang9 at cs dot wisc.edu
  2013-07-29 19:10 ` law at redhat dot com
  2 siblings, 0 replies; 4+ messages in thread
From: pchang9 at cs dot wisc.edu @ 2013-07-23 21:50 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57802

--- Comment #2 from Po-Chun Chang <pchang9 at cs dot wisc.edu> ---
Patch sent to gcc-patches@ and fortran@

http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01057.html
http://gcc.gnu.org/ml/fortran/2013-07/msg00071.html


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug fortran/57802] Wasted work in set_loop_bounds()
  2013-07-03 16:25 [Bug fortran/57802] New: Waste work in set_loop_bounds() pchang9 at cs dot wisc.edu
  2013-07-03 20:13 ` [Bug fortran/57802] Wasted " pchang9 at cs dot wisc.edu
  2013-07-23 21:50 ` pchang9 at cs dot wisc.edu
@ 2013-07-29 19:10 ` law at redhat dot com
  2 siblings, 0 replies; 4+ messages in thread
From: law at redhat dot com @ 2013-07-29 19:10 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57802

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |law at redhat dot com
         Resolution|---                         |FIXED

--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Patch installed on trunk.


^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-07-29 19:10 UTC | newest]

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2013-07-03 16:25 [Bug fortran/57802] New: Waste work in set_loop_bounds() pchang9 at cs dot wisc.edu
2013-07-03 20:13 ` [Bug fortran/57802] Wasted " pchang9 at cs dot wisc.edu
2013-07-23 21:50 ` pchang9 at cs dot wisc.edu
2013-07-29 19:10 ` law at redhat dot com

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