public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop
@ 2003-09-09 16:08 schwab at suse dot de
  2003-09-09 16:09 ` [Bug optimization/12223] " schwab at suse dot de
                   ` (11 more replies)
  0 siblings, 12 replies; 13+ messages in thread
From: schwab at suse dot de @ 2003-09-09 16:08 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223

           Summary: [3.3 regression] [IA64] Compiler generates infinite loop
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: schwab at suse dot de
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: ia64-suse-linux

The compiler generates an infinite loop from this part of the testcase: 
 
      for (size_t i = 0; i < siblings.size(); ++i) { 
        std::vector <Node> new_siblings; 
 
        if (! fetch(siblings[i], new_siblings)) { 
          array[begin + siblings[i].code].base = 
            val ? (ArrayType)(-val[siblings[i].left]-1) : (ArrayType)(-siblings
[i].left-1); 
 
.L925: 
	.mfb 
	ld8 r14 = [r15]	//  <variable>.val 
	nop.f 0 
	nop.b 0 
	;; 
	.mib 
	cmp.eq p6, p7 = 0, r14 
	nop.i 0 
	(p7) br.cond.dptk .L925


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3 regression] [IA64] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
@ 2003-09-09 16:09 ` schwab at suse dot de
  2003-09-10 11:48 ` [Bug optimization/12223] [3.3 regression] " schwab at suse dot de
                   ` (10 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: schwab at suse dot de @ 2003-09-09 16:09 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223



------- Additional Comments From schwab at suse dot de  2003-09-09 16:09 -------
Created an attachment (id=4726)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4726&action=view)
Testcase


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
  2003-09-09 16:09 ` [Bug optimization/12223] " schwab at suse dot de
@ 2003-09-10 11:48 ` schwab at suse dot de
  2003-09-10 18:24 ` [Bug optimization/12223] [3.3.2 " schwab at suse dot de
                   ` (9 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: schwab at suse dot de @ 2003-09-10 11:48 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


schwab at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 GCC target triplet|ia64-suse-linux             |*-suse-linux
            Summary|[3.3 regression] [IA64]     |[3.3 regression] Compiler
                   |Compiler generates infinite |generates infinite loop
                   |loop                        |
   Target Milestone|---                         |3.3.3


------- Additional Comments From schwab at suse dot de  2003-09-10 11:48 -------
The bug happens also at least on i386 and s390, so I presume it is target 
independent.


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
  2003-09-09 16:09 ` [Bug optimization/12223] " schwab at suse dot de
  2003-09-10 11:48 ` [Bug optimization/12223] [3.3 regression] " schwab at suse dot de
@ 2003-09-10 18:24 ` schwab at suse dot de
  2003-09-10 18:52 ` schwab at suse dot de
                   ` (8 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: schwab at suse dot de @ 2003-09-10 18:24 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


schwab at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[3.3 regression] Compiler   |[3.3.2 regression] Compiler
                   |generates infinite loop     |generates infinite loop
   Target Milestone|3.3.3                       |3.3.2


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (2 preceding siblings ...)
  2003-09-10 18:24 ` [Bug optimization/12223] [3.3.2 " schwab at suse dot de
@ 2003-09-10 18:52 ` schwab at suse dot de
  2003-09-13 23:59 ` rakdver at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: schwab at suse dot de @ 2003-09-10 18:52 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223



------- Additional Comments From schwab at suse dot de  2003-09-10 18:52 -------
Created an attachment (id=4737)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4737&action=view)
Reduced testcase


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (3 preceding siblings ...)
  2003-09-10 18:52 ` schwab at suse dot de
@ 2003-09-13 23:59 ` rakdver at gcc dot gnu dot org
  2003-09-14 18:41 ` schwab at suse dot de
                   ` (6 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2003-09-13 23:59 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


rakdver at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-09-13 22:16:11
               date|                            |


------- Additional Comments From rakdver at gcc dot gnu dot org  2003-09-13 22:16 -------
http://gcc.gnu.org/ml/gcc-patches/2003-09/msg00853.html


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (4 preceding siblings ...)
  2003-09-13 23:59 ` rakdver at gcc dot gnu dot org
@ 2003-09-14 18:41 ` schwab at suse dot de
  2003-09-15 14:04 ` matz at suse dot de
                   ` (5 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: schwab at suse dot de @ 2003-09-14 18:41 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


schwab at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |debian-gcc at lists dot
                   |                            |debian dot org


------- Additional Comments From schwab at suse dot de  2003-09-14 17:38 -------
*** Bug 12278 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (5 preceding siblings ...)
  2003-09-14 18:41 ` schwab at suse dot de
@ 2003-09-15 14:04 ` matz at suse dot de
  2003-09-19  9:52 ` ebotcazou at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: matz at suse dot de @ 2003-09-15 14:04 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


matz at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at redhat dot com


------- Additional Comments From matz at suse dot de  2003-09-15 08:52 -------
This bug (or better an instance of this bug which leads to miscompilation 
of OpenOffice) was introduced by: 
2003-09-07  Jason Merrill  <jason@redhat.com> 
 
        PR c++/12181 
        * typeck.c (build_modify_expr): Don't always stabilize the lhs and 
        rhs.  Do stabilize the lhs of a MODIFY_EXPR used on the lhs.


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (6 preceding siblings ...)
  2003-09-15 14:04 ` matz at suse dot de
@ 2003-09-19  9:52 ` ebotcazou at gcc dot gnu dot org
  2003-09-19 21:59 ` neroden at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2003-09-19  9:52 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|jason at redhat dot com     |
         AssignedTo|unassigned at gcc dot gnu   |jason at redhat dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED


------- Additional Comments From ebotcazou at gcc dot gnu dot org  2003-09-19 06:43 -------
Authors of patches that caused a regression must be assigned, not simply CCed.


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (7 preceding siblings ...)
  2003-09-19  9:52 ` ebotcazou at gcc dot gnu dot org
@ 2003-09-19 21:59 ` neroden at gcc dot gnu dot org
  2003-09-19 22:49 ` pinskia at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: neroden at gcc dot gnu dot org @ 2003-09-19 21:59 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


neroden at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 GCC target triplet|*-suse-linux                |*-*-linux*


------- Additional Comments From neroden at gcc dot gnu dot org  2003-09-19 21:21 -------
Breaks QT and OpenOffice, apparently.  This is really critical, though I'm not comfortable changing the priority ATM.


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (8 preceding siblings ...)
  2003-09-19 21:59 ` neroden at gcc dot gnu dot org
@ 2003-09-19 22:49 ` pinskia at gcc dot gnu dot org
  2003-10-04  9:06 ` jakub at redhat dot com
  2003-10-05 19:54 ` mmitchel at gcc dot gnu dot org
  11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-09-19 22:49 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
 GCC target triplet|*-*-linux*                  |


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (9 preceding siblings ...)
  2003-09-19 22:49 ` pinskia at gcc dot gnu dot org
@ 2003-10-04  9:06 ` jakub at redhat dot com
  2003-10-05 19:54 ` mmitchel at gcc dot gnu dot org
  11 siblings, 0 replies; 13+ messages in thread
From: jakub at redhat dot com @ 2003-10-04  9:06 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223



------- Additional Comments From jakub at redhat dot com  2003-10-04 09:06 -------
This is most likely fixed by http://gcc.gnu.org/ml/gcc-patches/2003-10/msg00065.html
At least, the testcase I had distilled from QT works and the smallest testcase
in this PR doesn't create an endless loop anymore.


^ permalink raw reply	[flat|nested] 13+ messages in thread
* [Bug optimization/12223] [3.3.2 regression] Compiler generates infinite loop
  2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
                   ` (10 preceding siblings ...)
  2003-10-04  9:06 ` jakub at redhat dot com
@ 2003-10-05 19:54 ` mmitchel at gcc dot gnu dot org
  11 siblings, 0 replies; 13+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2003-10-05 19:54 UTC (permalink / raw)
  To: gcc-bugs

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12223


mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


------- Additional Comments From mmitchel at gcc dot gnu dot org  2003-10-05 19:54 -------
Fixed in GCC 3.3.2.


^ permalink raw reply	[flat|nested] 13+ messages in thread
end of thread, other threads:[~2003-10-05 19:54 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-09-09 16:08 [Bug optimization/12223] New: [3.3 regression] [IA64] Compiler generates infinite loop schwab at suse dot de
2003-09-09 16:09 ` [Bug optimization/12223] " schwab at suse dot de
2003-09-10 11:48 ` [Bug optimization/12223] [3.3 regression] " schwab at suse dot de
2003-09-10 18:24 ` [Bug optimization/12223] [3.3.2 " schwab at suse dot de
2003-09-10 18:52 ` schwab at suse dot de
2003-09-13 23:59 ` rakdver at gcc dot gnu dot org
2003-09-14 18:41 ` schwab at suse dot de
2003-09-15 14:04 ` matz at suse dot de
2003-09-19  9:52 ` ebotcazou at gcc dot gnu dot org
2003-09-19 21:59 ` neroden at gcc dot gnu dot org
2003-09-19 22:49 ` pinskia at gcc dot gnu dot org
2003-10-04  9:06 ` jakub at redhat dot com
2003-10-05 19:54 ` mmitchel at gcc dot gnu 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).