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* [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail
@ 2010-07-31 13:20 iains at gcc dot gnu dot org
2010-07-31 13:22 ` [Bug middle-end/45150] " iains at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: iains at gcc dot gnu dot org @ 2010-07-31 13:20 UTC (permalink / raw)
To: gcc-bugs
i686-apple-darwin9 bootstrap is broken since r162678 (with an ICE reported for
other targets as well).
Since this was fixed (at r162697), it has unmasked another fail which is still
present at 162778.
unfortunately, the other bootstrap bug prevents narrowing this down more...
however;
This is a compare-debug fail of cfgexpand.o.
Looking at the .s files (to be attached) there seem to be instruction ordering
differences.
this bug is _not_ present in powerpc-apple-darwin9 or x86_64-apple-darwin10.
--
Summary: [4.6 Regression] bootstrap debug-compare fail
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: iains at gcc dot gnu dot org
GCC target triplet: i686-apple-darwin9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45150
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/45150] [4.6 Regression] bootstrap debug-compare fail
2010-07-31 13:20 [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail iains at gcc dot gnu dot org
@ 2010-07-31 13:22 ` iains at gcc dot gnu dot org
2010-07-31 13:26 ` iains at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: iains at gcc dot gnu dot org @ 2010-07-31 13:22 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from iains at gcc dot gnu dot org 2010-07-31 13:21 -------
Created an attachment (id=21364)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21364&action=view)
.i and .s files from cfgexpand for stage2 & 3
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45150
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/45150] [4.6 Regression] bootstrap debug-compare fail
2010-07-31 13:20 [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail iains at gcc dot gnu dot org
2010-07-31 13:22 ` [Bug middle-end/45150] " iains at gcc dot gnu dot org
@ 2010-07-31 13:26 ` iains at gcc dot gnu dot org
2010-07-31 18:48 ` iains at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: iains at gcc dot gnu dot org @ 2010-07-31 13:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from iains at gcc dot gnu dot org 2010-07-31 13:26 -------
cc-ing Bernd having reviewed the svn logs between r162678 and 162697.
--
iains at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernds at gcc dot gnu dot
| |org
Summary|[4.6 Regression] bootstrap |[4.6 Regression] bootstrap
|debug-compare fail |debug-compare fail
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45150
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/45150] [4.6 Regression] bootstrap debug-compare fail
2010-07-31 13:20 [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail iains at gcc dot gnu dot org
2010-07-31 13:22 ` [Bug middle-end/45150] " iains at gcc dot gnu dot org
2010-07-31 13:26 ` iains at gcc dot gnu dot org
@ 2010-07-31 18:48 ` iains at gcc dot gnu dot org
2010-08-04 15:01 ` danglin at gcc dot gnu dot org
2010-08-04 15:16 ` bernds at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: iains at gcc dot gnu dot org @ 2010-07-31 18:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from iains at gcc dot gnu dot org 2010-07-31 18:47 -------
this is a bit tedious to work through ... but for example in
_expand_one_stack_var_at:
we have for stage2 :
*************
cmovae %edx, %eax # tmp143,, max_align
cmpl $0, 52(%esp) #, %sfp
jbe L252 #,
L245:
movl %eax, 48(%esp) # max_align, %sfp
L227:
movzwl %cx, %eax # D.53575, tmp154
sall $6, %eax #, tmp154
addl L_tree_contains_struct$non_lazy_ptr-L00000000044$pb(%ebx), %eax
#, tmp155
***********
and for stage 3:
cmovae %edx, %eax # tmp143,, max_align
LM516:
cmpl $0, 52(%esp) #, %sfp
jbe L252 #,
L245:
LM517:
movl %eax, 48(%esp) # max_align, %sfp
movl $0, 52(%esp) #, %sfp
L227:
LVL348:
LBB2461:
LM518:
movzwl %cx, %eax # D.53575, tmp154
sall $6, %eax #, tmp154
addl L_tree_contains_struct$non_lazy_ptr-L00000000044$pb(%ebx), %eax
#, tmp155
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45150
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/45150] [4.6 Regression] bootstrap debug-compare fail
2010-07-31 13:20 [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail iains at gcc dot gnu dot org
` (2 preceding siblings ...)
2010-07-31 18:48 ` iains at gcc dot gnu dot org
@ 2010-08-04 15:01 ` danglin at gcc dot gnu dot org
2010-08-04 15:16 ` bernds at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: danglin at gcc dot gnu dot org @ 2010-08-04 15:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from danglin at gcc dot gnu dot org 2010-08-04 15:00 -------
I back-ported r162697 to r162678 and see comparison fail at r162678.
--
danglin at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |danglin at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-08-04 15:00:59
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45150
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/45150] [4.6 Regression] bootstrap debug-compare fail
2010-07-31 13:20 [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail iains at gcc dot gnu dot org
` (3 preceding siblings ...)
2010-08-04 15:01 ` danglin at gcc dot gnu dot org
@ 2010-08-04 15:16 ` bernds at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: bernds at gcc dot gnu dot org @ 2010-08-04 15:16 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from bernds at gcc dot gnu dot org 2010-08-04 15:16 -------
*** This bug has been marked as a duplicate of 45162 ***
--
bernds at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45150
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-08-04 15:16 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2010-07-31 13:20 [Bug middle-end/45150] New: [4.6 Regression] bootstrap debug-compare fail iains at gcc dot gnu dot org
2010-07-31 13:22 ` [Bug middle-end/45150] " iains at gcc dot gnu dot org
2010-07-31 13:26 ` iains at gcc dot gnu dot org
2010-07-31 18:48 ` iains at gcc dot gnu dot org
2010-08-04 15:01 ` danglin at gcc dot gnu dot org
2010-08-04 15:16 ` bernds at gcc dot gnu dot org
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