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* [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4
@ 2005-01-25 17:15 michael dot schwingen at lancom dot de
2005-01-25 17:16 ` [Bug rtl-optimization/19627] " michael dot schwingen at lancom dot de
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: michael dot schwingen at lancom dot de @ 2005-01-25 17:15 UTC (permalink / raw)
To: gcc-bugs
gcc generates wrong code on the test case when called with
/opt/cgcc-3.4.3-20050125/bin/sh-elf-gcc -m4 -S -Os -fomit-frame-pointer test2.c
Adding -fno-if-conversion2 creates working code. It seems that the code that
modifies the stack pointer to make space for function arguments is shifted
across a branch to a point where some paths through the function end up with a
wrong stack pointer at the end.
Attached: test2.c, test2.s, test2.c.27.flow2, test2.c.29.ce3
--
Summary: if-conversion2 generates wrong code / crash on SH4
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: michael dot schwingen at lancom dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: unknown-i686-linux
GCC host triplet: unknown-i686-linux
GCC target triplet: unknown-sh-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
@ 2005-01-25 17:16 ` michael dot schwingen at lancom dot de
2005-01-25 17:17 ` michael dot schwingen at lancom dot de
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: michael dot schwingen at lancom dot de @ 2005-01-25 17:16 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From michael dot schwingen at lancom dot de 2005-01-25 17:15 -------
Created an attachment (id=8063)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8063&action=view)
C source code
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
2005-01-25 17:16 ` [Bug rtl-optimization/19627] " michael dot schwingen at lancom dot de
@ 2005-01-25 17:17 ` michael dot schwingen at lancom dot de
2005-01-25 17:18 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: michael dot schwingen at lancom dot de @ 2005-01-25 17:17 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From michael dot schwingen at lancom dot de 2005-01-25 17:17 -------
Created an attachment (id=8066)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8066&action=view)
first wrong RTL
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
` (2 preceding siblings ...)
2005-01-25 17:18 ` pinskia at gcc dot gnu dot org
@ 2005-01-25 17:18 ` michael dot schwingen at lancom dot de
2005-01-25 17:21 ` michael dot schwingen at lancom dot de
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: michael dot schwingen at lancom dot de @ 2005-01-25 17:18 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From michael dot schwingen at lancom dot de 2005-01-25 17:16 -------
Created an attachment (id=8064)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8064&action=view)
assembler output containing wrong code
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
2005-01-25 17:16 ` [Bug rtl-optimization/19627] " michael dot schwingen at lancom dot de
2005-01-25 17:17 ` michael dot schwingen at lancom dot de
@ 2005-01-25 17:18 ` pinskia at gcc dot gnu dot org
2005-01-25 17:18 ` michael dot schwingen at lancom dot de
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-01-25 17:18 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
GCC build triplet|unknown-i686-linux |
GCC host triplet|unknown-i686-linux |
GCC target triplet|unknown-sh-elf |sh-elf
Keywords| |ice-on-valid-code, wrong-
| |code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
` (3 preceding siblings ...)
2005-01-25 17:18 ` michael dot schwingen at lancom dot de
@ 2005-01-25 17:21 ` michael dot schwingen at lancom dot de
2005-02-24 22:40 ` amylaar at gcc dot gnu dot org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: michael dot schwingen at lancom dot de @ 2005-01-25 17:21 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From michael dot schwingen at lancom dot de 2005-01-25 17:17 -------
Created an attachment (id=8065)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8065&action=view)
last correct RTL
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
` (4 preceding siblings ...)
2005-01-25 17:21 ` michael dot schwingen at lancom dot de
@ 2005-02-24 22:40 ` amylaar at gcc dot gnu dot org
2005-02-24 22:51 ` amylaar at gcc dot gnu dot org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2005-02-24 22:40 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From amylaar at gcc dot gnu dot org 2005-02-24 18:44 -------
STack management appears sane when using gcc 4.0.0 20050224 .
--
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
` (5 preceding siblings ...)
2005-02-24 22:40 ` amylaar at gcc dot gnu dot org
@ 2005-02-24 22:51 ` amylaar at gcc dot gnu dot org
2005-02-25 1:05 ` amylaar at gcc dot gnu dot org
2005-07-31 2:38 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2005-02-24 22:51 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From amylaar at gcc dot gnu dot org 2005-02-24 18:56 -------
3.4.4 20050125 shows the problem.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Known to fail| |3.4.4
Last reconfirmed|0000-00-00 00:00:00 |2005-02-24 18:56:31
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
` (6 preceding siblings ...)
2005-02-24 22:51 ` amylaar at gcc dot gnu dot org
@ 2005-02-25 1:05 ` amylaar at gcc dot gnu dot org
2005-07-31 2:38 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2005-02-25 1:05 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From amylaar at gcc dot gnu dot org 2005-02-24 20:31 -------
A patch is here:
http://gcc.gnu.org/ml/gcc-patches/2004-04/msg01280.html
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |joern dot rennecke at st dot
| |com, mark at codesourcery
| |dot com
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug rtl-optimization/19627] if-conversion2 generates wrong code / crash on SH4
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
` (7 preceding siblings ...)
2005-02-25 1:05 ` amylaar at gcc dot gnu dot org
@ 2005-07-31 2:38 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-31 2:38 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-31 02:35 -------
Fixed in 4.0.0.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19627
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2005-07-31 2:35 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-01-25 17:15 [Bug rtl-optimization/19627] New: if-conversion2 generates wrong code / crash on SH4 michael dot schwingen at lancom dot de
2005-01-25 17:16 ` [Bug rtl-optimization/19627] " michael dot schwingen at lancom dot de
2005-01-25 17:17 ` michael dot schwingen at lancom dot de
2005-01-25 17:18 ` pinskia at gcc dot gnu dot org
2005-01-25 17:18 ` michael dot schwingen at lancom dot de
2005-01-25 17:21 ` michael dot schwingen at lancom dot de
2005-02-24 22:40 ` amylaar at gcc dot gnu dot org
2005-02-24 22:51 ` amylaar at gcc dot gnu dot org
2005-02-25 1:05 ` amylaar at gcc dot gnu dot org
2005-07-31 2:38 ` pinskia at gcc dot gnu dot org
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