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* [Bug tree-optimization/42646] Jump threading breaks canonical loop forms
       [not found] <bug-42646-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-05 21:36 ` pinskia at gcc dot gnu.org
  0 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-05 21:36 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42646

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This seems to finally have been fixed on the trunk.

^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug tree-optimization/42646] Jump threading breaks canonical loop forms
  2010-01-07 14:27 [Bug tree-optimization/42646] New: " joefoxreal at gmail dot com
                   ` (2 preceding siblings ...)
  2010-01-08  1:42 ` joefoxreal at gmail dot com
@ 2010-01-08 11:53 ` rguenth at gcc dot gnu dot org
  3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-01-08 11:53 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #4 from rguenth at gcc dot gnu dot org  2010-01-08 11:52 -------
It just means that we shouldn't thread to the header but always to the latch
block.  Note that this restriction should probably be restricted to the
threading before loop optimizations.  Or the 1st jump threading should simply
avoid to thread over backedges (equivalent to removing the 1st DOM pass -
though
there is interesting fallout regarding jump-threading / loop header copying
pass ordering).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42646


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug tree-optimization/42646] Jump threading breaks canonical loop forms
  2010-01-07 14:27 [Bug tree-optimization/42646] New: " joefoxreal at gmail dot com
  2010-01-07 14:29 ` [Bug tree-optimization/42646] " joefoxreal at gmail dot com
  2010-01-08  1:40 ` joefoxreal at gmail dot com
@ 2010-01-08  1:42 ` joefoxreal at gmail dot com
  2010-01-08 11:53 ` rguenth at gcc dot gnu dot org
  3 siblings, 0 replies; 5+ messages in thread
From: joefoxreal at gmail dot com @ 2010-01-08  1:42 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from joefoxreal at gmail dot com  2010-01-08 01:41 -------
Created an attachment (id=19505)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19505&action=view)
the cfg of foo.c.080t.dom1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42646


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug tree-optimization/42646] Jump threading breaks canonical loop forms
  2010-01-07 14:27 [Bug tree-optimization/42646] New: " joefoxreal at gmail dot com
  2010-01-07 14:29 ` [Bug tree-optimization/42646] " joefoxreal at gmail dot com
@ 2010-01-08  1:40 ` joefoxreal at gmail dot com
  2010-01-08  1:42 ` joefoxreal at gmail dot com
  2010-01-08 11:53 ` rguenth at gcc dot gnu dot org
  3 siblings, 0 replies; 5+ messages in thread
From: joefoxreal at gmail dot com @ 2010-01-08  1:40 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from joefoxreal at gmail dot com  2010-01-08 01:40 -------
Created an attachment (id=19504)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19504&action=view)
the cfg of foo.c.079t.copyrename3


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42646


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug tree-optimization/42646] Jump threading breaks canonical loop forms
  2010-01-07 14:27 [Bug tree-optimization/42646] New: " joefoxreal at gmail dot com
@ 2010-01-07 14:29 ` joefoxreal at gmail dot com
  2010-01-08  1:40 ` joefoxreal at gmail dot com
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 5+ messages in thread
From: joefoxreal at gmail dot com @ 2010-01-07 14:29 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from joefoxreal at gmail dot com  2010-01-07 14:29 -------
Created an attachment (id=19498)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19498&action=view)
cfg of the function foo


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42646


^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-08-05 21:36 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <bug-42646-4@http.gcc.gnu.org/bugzilla/>
2021-08-05 21:36 ` [Bug tree-optimization/42646] Jump threading breaks canonical loop forms pinskia at gcc dot gnu.org
2010-01-07 14:27 [Bug tree-optimization/42646] New: " joefoxreal at gmail dot com
2010-01-07 14:29 ` [Bug tree-optimization/42646] " joefoxreal at gmail dot com
2010-01-08  1:40 ` joefoxreal at gmail dot com
2010-01-08  1:42 ` joefoxreal at gmail dot com
2010-01-08 11:53 ` rguenth at gcc dot gnu dot org

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