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* [Bug middle-end/30172] New: Operations with partly constant complex values not folded
@ 2006-12-12 12:27 rguenth at gcc dot gnu dot org
2006-12-13 7:15 ` [Bug middle-end/30172] " pinskia at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-12-12 12:27 UTC (permalink / raw)
To: gcc-bugs
We do not fold for example
__complex__ ( x, 0 ) * __complex__ ( 0, 1 )
or
__complex__ ( x, 0 ) + __complex__ ( 0, y )
I have a partial patch.
--
Summary: Operations with partly constant complex values not
folded
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: middle-end
AssignedTo: rguenth at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/30172] Operations with partly constant complex values not folded
2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
@ 2006-12-13 7:15 ` pinskia at gcc dot gnu dot org
2006-12-13 13:31 ` rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-12-13 7:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2006-12-13 07:15 -------
Confirmed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO| |19987
nThis| |
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-12-13 07:15:17
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/30172] Operations with partly constant complex values not folded
2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
2006-12-13 7:15 ` [Bug middle-end/30172] " pinskia at gcc dot gnu dot org
@ 2006-12-13 13:31 ` rguenth at gcc dot gnu dot org
2006-12-13 16:22 ` rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-12-13 13:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2006-12-13 13:31 -------
__complex__ ( x, y ) * I == __complex__ ( -y, x )
__complex__ ( x, y ) * -I == __complex__ ( y, -x )
but only if we don't honor NaNs or signed zeros.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/30172] Operations with partly constant complex values not folded
2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
2006-12-13 7:15 ` [Bug middle-end/30172] " pinskia at gcc dot gnu dot org
2006-12-13 13:31 ` rguenth at gcc dot gnu dot org
@ 2006-12-13 16:22 ` rguenth at gcc dot gnu dot org
2006-12-14 4:00 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-12-13 16:22 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2006-
| |12/msg00954.html
Status|NEW |ASSIGNED
Last reconfirmed|2006-12-13 07:15:17 |2006-12-13 16:22:43
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/30172] Operations with partly constant complex values not folded
2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
` (2 preceding siblings ...)
2006-12-13 16:22 ` rguenth at gcc dot gnu dot org
@ 2006-12-14 4:00 ` pinskia at gcc dot gnu dot org
2006-12-14 13:12 ` rguenth at gcc dot gnu dot org
2007-01-10 19:16 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-12-14 4:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2006-12-14 03:59 -------
(In reply to comment #2)
> but only if we don't honor NaNs or signed zeros.
Some of these optimizations can be done even without worrying about NaNs
because of -fcx-limited-range .
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/30172] Operations with partly constant complex values not folded
2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
` (3 preceding siblings ...)
2006-12-14 4:00 ` pinskia at gcc dot gnu dot org
@ 2006-12-14 13:12 ` rguenth at gcc dot gnu dot org
2007-01-10 19:16 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-12-14 13:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2006-12-14 13:12 -------
Fixed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/30172] Operations with partly constant complex values not folded
2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
` (4 preceding siblings ...)
2006-12-14 13:12 ` rguenth at gcc dot gnu dot org
@ 2007-01-10 19:16 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-01-10 19:16 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-01-10 19:16 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2006-12-12 12:27 [Bug middle-end/30172] New: Operations with partly constant complex values not folded rguenth at gcc dot gnu dot org
2006-12-13 7:15 ` [Bug middle-end/30172] " pinskia at gcc dot gnu dot org
2006-12-13 13:31 ` rguenth at gcc dot gnu dot org
2006-12-13 16:22 ` rguenth at gcc dot gnu dot org
2006-12-14 4:00 ` pinskia at gcc dot gnu dot org
2006-12-14 13:12 ` rguenth at gcc dot gnu dot org
2007-01-10 19:16 ` pinskia at gcc dot gnu dot org
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