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* [Bug middle-end/35308] Straight line strength reduction
[not found] <bug-35308-4@http.gcc.gnu.org/bugzilla/>
@ 2012-06-28 1:36 ` wschmidt at gcc dot gnu.org
2013-03-22 14:48 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: wschmidt at gcc dot gnu.org @ 2012-06-28 1:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35308
William J. Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Keywords| |missed-optimization
Last reconfirmed| |2012-06-28
CC| |wschmidt at gcc dot gnu.org
AssignedTo|unassigned at gcc dot |wschmidt at gcc dot gnu.org
|gnu.org |
Resolution|DUPLICATE |
Ever Confirmed|0 |1
Target Milestone|--- |4.8.0
--- Comment #3 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2012-06-28 01:36:25 UTC ---
Reopening this one since the cases in this bug report (unknown stride,
conditional candidate) are not yet handled by the new strength reduction pass.
I will re-close once those additional features are in place.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/35308] Straight line strength reduction
[not found] <bug-35308-4@http.gcc.gnu.org/bugzilla/>
2012-06-28 1:36 ` [Bug middle-end/35308] Straight line strength reduction wschmidt at gcc dot gnu.org
@ 2013-03-22 14:48 ` jakub at gcc dot gnu.org
2013-03-25 13:17 ` wschmidt at gcc dot gnu.org
2013-07-17 3:27 ` wschmidt at gcc dot gnu.org
3 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-03-22 14:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35308
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.0 |4.8.1
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-03-22 14:46:02 UTC ---
GCC 4.8.0 is being released, adjusting target milestone.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/35308] Straight line strength reduction
[not found] <bug-35308-4@http.gcc.gnu.org/bugzilla/>
2012-06-28 1:36 ` [Bug middle-end/35308] Straight line strength reduction wschmidt at gcc dot gnu.org
2013-03-22 14:48 ` jakub at gcc dot gnu.org
@ 2013-03-25 13:17 ` wschmidt at gcc dot gnu.org
2013-07-17 3:27 ` wschmidt at gcc dot gnu.org
3 siblings, 0 replies; 6+ messages in thread
From: wschmidt at gcc dot gnu.org @ 2013-03-25 13:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35308
William J. Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.1 |4.9.0
--- Comment #5 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2013-03-25 13:17:39 UTC ---
The unknown stride features made it into 4.8.0, but conditional candidates are
still pending, and too complex for 4.8.1, I think. Changing target to 4.9 for
the remaining work. I do plan to get that wrapped up fairly soon.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/35308] Straight line strength reduction
[not found] <bug-35308-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2013-03-25 13:17 ` wschmidt at gcc dot gnu.org
@ 2013-07-17 3:27 ` wschmidt at gcc dot gnu.org
3 siblings, 0 replies; 6+ messages in thread
From: wschmidt at gcc dot gnu.org @ 2013-07-17 3:27 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35308
Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Conditional candidate processing was completed a couple of months ago. While
there are improvements I plan to look at someday, the basic work is done, so
closing the issue.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/35308] Straight line strength reduction
2008-02-23 5:23 [Bug middle-end/35308] New: " xinliangli at gmail dot com
2008-02-23 5:27 ` [Bug middle-end/35308] " pinskia at gcc dot gnu dot org
@ 2008-02-23 6:56 ` xinliangli at gmail dot com
1 sibling, 0 replies; 6+ messages in thread
From: xinliangli at gmail dot com @ 2008-02-23 6:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from xinliangli at gmail dot com 2008-02-23 06:55 -------
(In reply to comment #1)
> Sometimes doing the strength reduction actually increases the code size. Think
> on targets which have auto increments.
>
> *** This bug has been marked as a duplicate of 22586 ***
>
Itanium supports address post increment. The postInc synthesis phase should
not be affected by the strengh reduced address computation code.
When this is fixed by the PRE framework, make sure the conditional increment
case is also covered:
a[i] = i*g;
if (...)
{
i++;
}
a[i] += ...
... = i*g;
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35308
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/35308] Straight line strength reduction
2008-02-23 5:23 [Bug middle-end/35308] New: " xinliangli at gmail dot com
@ 2008-02-23 5:27 ` pinskia at gcc dot gnu dot org
2008-02-23 6:56 ` xinliangli at gmail dot com
1 sibling, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-02-23 5:27 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2008-02-23 05:27 -------
Sometimes doing the strength reduction actually increases the code size. Think
on targets which have auto increments.
*** This bug has been marked as a duplicate of 22586 ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35308
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-07-17 3:27 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-35308-4@http.gcc.gnu.org/bugzilla/>
2012-06-28 1:36 ` [Bug middle-end/35308] Straight line strength reduction wschmidt at gcc dot gnu.org
2013-03-22 14:48 ` jakub at gcc dot gnu.org
2013-03-25 13:17 ` wschmidt at gcc dot gnu.org
2013-07-17 3:27 ` wschmidt at gcc dot gnu.org
2008-02-23 5:23 [Bug middle-end/35308] New: " xinliangli at gmail dot com
2008-02-23 5:27 ` [Bug middle-end/35308] " pinskia at gcc dot gnu dot org
2008-02-23 6:56 ` xinliangli at gmail dot com
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