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* [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns
@ 2010-07-29 20:20 zsojka at seznam dot cz
2010-07-29 20:21 ` [Bug rtl-optimization/45136] " zsojka at seznam dot cz
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: zsojka at seznam dot cz @ 2010-07-29 20:20 UTC (permalink / raw)
To: gcc-bugs
Output:
$ gcc -Os -fschedule-insns -fcompare-debug testcase.c
gcc: error: testcase.c: -fcompare-debug failure
Tested revisions:
r162653 - fail
r161170 - fail
r153685 - fail
--
Summary: -fcompare-debug failure with -Os -fschedule-insns
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zsojka at seznam dot cz
GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
@ 2010-07-29 20:21 ` zsojka at seznam dot cz
2010-07-30 0:33 ` hjl dot tools at gmail dot com
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: zsojka at seznam dot cz @ 2010-07-29 20:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from zsojka at seznam dot cz 2010-07-29 20:21 -------
Created an attachment (id=21356)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21356&action=view)
reduced testcase
Valgrind doesn't report any invalid/uninitialised read while compiling this
testcase.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
2010-07-29 20:21 ` [Bug rtl-optimization/45136] " zsojka at seznam dot cz
@ 2010-07-30 0:33 ` hjl dot tools at gmail dot com
2010-07-30 1:35 ` zsojka at seznam dot cz
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: hjl dot tools at gmail dot com @ 2010-07-30 0:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from hjl dot tools at gmail dot com 2010-07-30 00:32 -------
It is caused by revision 161655:
http://gcc.gnu.org/ml/gcc-cvs/2010-07/msg00006.html
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-07-30 00:32:50
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
2010-07-29 20:21 ` [Bug rtl-optimization/45136] " zsojka at seznam dot cz
2010-07-30 0:33 ` hjl dot tools at gmail dot com
@ 2010-07-30 1:35 ` zsojka at seznam dot cz
2010-07-30 4:11 ` hjl dot tools at gmail dot com
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: zsojka at seznam dot cz @ 2010-07-30 1:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from zsojka at seznam dot cz 2010-07-30 01:35 -------
Thank you for the reply! Then, the bug had to be fixed/hiden before r161655, I
can reproduce it with r161170, r153685 and gcc 4.5.0. (maybe you replied to a
wrong PR?)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
` (2 preceding siblings ...)
2010-07-30 1:35 ` zsojka at seznam dot cz
@ 2010-07-30 4:11 ` hjl dot tools at gmail dot com
2010-07-30 9:41 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: hjl dot tools at gmail dot com @ 2010-07-30 4:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from hjl dot tools at gmail dot com 2010-07-30 04:11 -------
I was wrong. It never worked.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
` (3 preceding siblings ...)
2010-07-30 4:11 ` hjl dot tools at gmail dot com
@ 2010-07-30 9:41 ` jakub at gcc dot gnu dot org
2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu dot org @ 2010-07-30 9:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jakub at gcc dot gnu dot org 2010-07-30 09:40 -------
Confirmed, this seems to be sched1 fault.
In bb5 we have 2 normal insns, followed by (-g only) a debug_insn, followed by
two NOTE_INSN_DELETED created by combine (do we ever remove these from the
IL?),
followed again (-g only) by debug_insn and then other insns.
sched1 moves those two NOTE_INSN_DELETED in -g case to the start of the block,
keeps them where they were otherwise.
Alex, can you please have a look?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
` (4 preceding siblings ...)
2010-07-30 9:41 ` jakub at gcc dot gnu dot org
@ 2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
2010-09-04 15:28 ` [Bug debug/45136] " aoliva at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: aoliva at gcc dot gnu dot org @ 2010-08-30 19:14 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from aoliva at gcc dot gnu dot org 2010-08-30 19:13 -------
The debug insns aren't at the end of the block in the beginning of sched, so we
don't disregard them at first, but they become end-of-block insns after the
trailing non-debug insns are pulled into other earlier blocks in the same
region. I'm testing a patch that revamps the way we deal with boundary notes
and debug insns.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
` (5 preceding siblings ...)
2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
@ 2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
2010-09-04 15:28 ` [Bug debug/45136] " aoliva at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: aoliva at gcc dot gnu dot org @ 2010-08-30 19:14 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from aoliva at gcc dot gnu dot org 2010-08-30 19:14 -------
The debug insns aren't at the end of the block in the beginning of sched, so we
don't disregard them at first, but they become end-of-block insns after the
trailing non-debug insns are pulled into other earlier blocks in the same
region. I'm testing a patch that revamps the way we deal with boundary notes
and debug insns.
--
aoliva at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |aoliva at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/45136] -fcompare-debug failure with -Os -fschedule-insns
2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
` (6 preceding siblings ...)
2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
@ 2010-09-04 15:28 ` aoliva at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: aoliva at gcc dot gnu dot org @ 2010-09-04 15:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from aoliva at gcc dot gnu dot org 2010-09-04 15:28 -------
*** Bug 45130 has been marked as a duplicate of this bug. ***
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45136
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2010-09-04 15:28 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2010-07-29 20:20 [Bug rtl-optimization/45136] New: -fcompare-debug failure with -Os -fschedule-insns zsojka at seznam dot cz
2010-07-29 20:21 ` [Bug rtl-optimization/45136] " zsojka at seznam dot cz
2010-07-30 0:33 ` hjl dot tools at gmail dot com
2010-07-30 1:35 ` zsojka at seznam dot cz
2010-07-30 4:11 ` hjl dot tools at gmail dot com
2010-07-30 9:41 ` jakub at gcc dot gnu dot org
2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
2010-08-30 19:14 ` aoliva at gcc dot gnu dot org
2010-09-04 15:28 ` [Bug debug/45136] " aoliva at gcc dot gnu dot org
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