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* [Bug tree-optimization/15785] New: fold misses neg transformation
@ 2004-06-02 21:07 pinskia at gcc dot gnu dot org
2004-06-02 21:09 ` [Bug tree-optimization/15785] " pinskia at gcc dot gnu dot org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-02 21:07 UTC (permalink / raw)
To: gcc-bugs
int f(int x)
{
return ~(x-1);//should be -x
}
--
Summary: fold misses neg transformation
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Keywords: missed-optimization, TREE
Severity: enhancement
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses neg transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
@ 2004-06-02 21:09 ` pinskia at gcc dot gnu dot org
2004-06-02 21:13 ` [Bug tree-optimization/15785] fold misses unary transformation pinskia at gcc dot gnu dot org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-02 21:09 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-02 21:08 -------
int f(int x)
{
return ~ (-x); // x-1
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
2004-06-02 21:09 ` [Bug tree-optimization/15785] " pinskia at gcc dot gnu dot org
@ 2004-06-02 21:13 ` pinskia at gcc dot gnu dot org
2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-02 21:13 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|fold misses neg |fold misses unary
|transformation |transformation
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
` (2 preceding siblings ...)
2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
@ 2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
2004-06-02 21:20 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-02 21:14 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO| |15458
nThis| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
2004-06-02 21:09 ` [Bug tree-optimization/15785] " pinskia at gcc dot gnu dot org
2004-06-02 21:13 ` [Bug tree-optimization/15785] fold misses unary transformation pinskia at gcc dot gnu dot org
@ 2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-02 21:14 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO|15458 |
nThis| |
BugsThisDependsOn| |15458
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
` (3 preceding siblings ...)
2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
@ 2004-06-02 21:20 ` pinskia at gcc dot gnu dot org
2004-06-26 20:22 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-02 21:20 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-02 21:20 -------
int f(int x)
{
return - (~x); // should be x-1
}
--
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn|15458 |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
` (4 preceding siblings ...)
2004-06-02 21:20 ` pinskia at gcc dot gnu dot org
@ 2004-06-26 20:22 ` pinskia at gcc dot gnu dot org
2004-07-04 7:23 ` kazu at cs dot umass dot edu
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-26 20:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-26 20:22 -------
Confirmed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-06-26 20:22:31
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
` (5 preceding siblings ...)
2004-06-26 20:22 ` pinskia at gcc dot gnu dot org
@ 2004-07-04 7:23 ` kazu at cs dot umass dot edu
2005-02-12 17:08 ` phython at gcc dot gnu dot org
2005-02-16 3:50 ` phython at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: kazu at cs dot umass dot edu @ 2004-07-04 7:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From kazu at cs dot umass dot edu 2004-07-04 07:23 -------
Actually, the function in Comment #2 should generate "x + 1".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
` (6 preceding siblings ...)
2004-07-04 7:23 ` kazu at cs dot umass dot edu
@ 2005-02-12 17:08 ` phython at gcc dot gnu dot org
2005-02-16 3:50 ` phython at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: phython at gcc dot gnu dot org @ 2005-02-12 17:08 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From phython at gcc dot gnu dot org 2005-02-12 14:03 -------
Created an attachment (id=8183)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8183&action=view)
testcase
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |phython at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/15785] fold misses unary transformation
2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
` (7 preceding siblings ...)
2005-02-12 17:08 ` phython at gcc dot gnu dot org
@ 2005-02-16 3:50 ` phython at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: phython at gcc dot gnu dot org @ 2005-02-16 3:50 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From phython at gcc dot gnu dot org 2005-02-15 21:58 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15785
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2005-02-15 21:59 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2004-06-02 21:07 [Bug tree-optimization/15785] New: fold misses neg transformation pinskia at gcc dot gnu dot org
2004-06-02 21:09 ` [Bug tree-optimization/15785] " pinskia at gcc dot gnu dot org
2004-06-02 21:13 ` [Bug tree-optimization/15785] fold misses unary transformation pinskia at gcc dot gnu dot org
2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
2004-06-02 21:14 ` pinskia at gcc dot gnu dot org
2004-06-02 21:20 ` pinskia at gcc dot gnu dot org
2004-06-26 20:22 ` pinskia at gcc dot gnu dot org
2004-07-04 7:23 ` kazu at cs dot umass dot edu
2005-02-12 17:08 ` phython at gcc dot gnu dot org
2005-02-16 3:50 ` phython at gcc dot gnu dot org
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