public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug middle-end/23672] New: Fold does not fold (a^b)^a to b
@ 2005-09-01 2:27 pinskia at gcc dot gnu dot org
2005-09-17 2:12 ` [Bug middle-end/23672] " pinskia at gcc dot gnu dot org
2005-09-17 2:44 ` dberlin at dberlin dot org
0 siblings, 2 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-01 2:27 UTC (permalink / raw)
To: gcc-bugs
These two functions should be the same at the tree level but are not:
int f(int a, int b)
{
return (a^b)^a;
}
int f1(int a, int b)
{
return b;
}
---
Another one from LLVM.
--
Summary: Fold does not fold (a^b)^a to b
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: missed-optimization, TREE
Severity: enhancement
Priority: P2
Component: middle-end
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
OtherBugsDependingO 19986
nThis:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23672
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/23672] Fold does not fold (a^b)^a to b
2005-09-01 2:27 [Bug middle-end/23672] New: Fold does not fold (a^b)^a to b pinskia at gcc dot gnu dot org
@ 2005-09-17 2:12 ` pinskia at gcc dot gnu dot org
2005-09-17 2:44 ` Daniel Berlin
2005-09-17 2:44 ` dberlin at dberlin dot org
1 sibling, 1 reply; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-17 2:12 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-17 02:12 -------
Confirmed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-09-17 02:12:18
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23672
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bug middle-end/23672] Fold does not fold (a^b)^a to b
2005-09-17 2:12 ` [Bug middle-end/23672] " pinskia at gcc dot gnu dot org
@ 2005-09-17 2:44 ` Daniel Berlin
0 siblings, 0 replies; 4+ messages in thread
From: Daniel Berlin @ 2005-09-17 2:44 UTC (permalink / raw)
To: gcc-bugzilla; +Cc: gcc-bugs
On Sat, 2005-09-17 at 02:12 +0000, pinskia at gcc dot gnu dot org wrote:
> ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-17 02:12 -------
> Confirmed.
>
The new reassoc should take care of this
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/23672] Fold does not fold (a^b)^a to b
2005-09-01 2:27 [Bug middle-end/23672] New: Fold does not fold (a^b)^a to b pinskia at gcc dot gnu dot org
2005-09-17 2:12 ` [Bug middle-end/23672] " pinskia at gcc dot gnu dot org
@ 2005-09-17 2:44 ` dberlin at dberlin dot org
1 sibling, 0 replies; 4+ messages in thread
From: dberlin at dberlin dot org @ 2005-09-17 2:44 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From dberlin at gcc dot gnu dot org 2005-09-17 02:44 -------
Subject: Re: Fold does not fold (a^b)^a to b
On Sat, 2005-09-17 at 02:12 +0000, pinskia at gcc dot gnu dot org wrote:
> ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-17 02:12 -------
> Confirmed.
>
The new reassoc should take care of this
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23672
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2005-09-17 2:44 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-09-01 2:27 [Bug middle-end/23672] New: Fold does not fold (a^b)^a to b pinskia at gcc dot gnu dot org
2005-09-17 2:12 ` [Bug middle-end/23672] " pinskia at gcc dot gnu dot org
2005-09-17 2:44 ` Daniel Berlin
2005-09-17 2:44 ` dberlin at dberlin dot org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).