--- Comment #14 from mikpe at it dot uu dot se 2010-05-31 07:20 ---
The bootstrap comparison failure is gone on armv5tel-unknown-linux-gnueabi with
gcc-4.6-20100529. Thus closing as fixed.
--
mikpe at it dot uu dot se changed:
What|Removed |Added
--- Comment #13 from mikpe at it dot uu dot se 2010-05-28 16:02 ---
Jakub's patch fixed 4.6 bootstrap on my sparc64 machine. My ARM is testing
other branches currently, but I should have 4.6 bootstrap results for it on
Sunday or Monday, at which time I'll close this PR if things went
--- Comment #11 from mikpe at it dot uu dot se 2010-05-27 21:35 ---
Created an attachment (id=20763)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20763action=view)
preprocessed source for libiberty/cp-demangle.c
Here's the preprocessed source for libiberty/cp-demangle.c as
--- Comment #12 from jakub at gcc dot gnu dot org 2010-05-27 22:09 ---
Subject: Bug 44255
Author: jakub
Date: Thu May 27 22:08:41 2010
New Revision: 159952
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=159952
Log:
PR bootstrap/44255
* combine.c (struct
--- Comment #10 from mikpe at it dot uu dot se 2010-05-26 15:16 ---
(In reply to comment #2)
My ARM box is currently busy running another test, but as soon as that
finishes
I'll check if r159600 is also responsible for the ARM bootstrap failure.
It is, r159599 bootstraps on ARM,
--- Comment #7 from iains at gcc dot gnu dot org 2010-05-25 07:38 ---
(In reply to comment #4)
(In reply to comment #3)
most likely this is a duplicate of:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44229
1. I see the failure on both BE (sparc64) and LE (armv5tel).
2. Both BE
--- Comment #8 from jakub at gcc dot gnu dot org 2010-05-25 07:57 ---
If cp-demangle.c fails to compile even with -fcompare-debug switch added,
please
attach preprocessed source for it from sparc64 and/or arm and mention the exact
command line switches used to compile it, so it can be
--- Comment #9 from rguenth at gcc dot gnu dot org 2010-05-25 13:27 ---
*** Bug 44270 has been marked as a duplicate of this bug. ***
--
rguenth at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #2 from mikpe at it dot uu dot se 2010-05-24 09:31 ---
Bisection identified r159600 as the source of the failure on sparc64:
Author: rsandifo
Date: Wed May 19 21:08:53 2010
New Revision: 159600
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=159600
Log:
gcc/
*
--- Comment #3 from iains at gcc dot gnu dot org 2010-05-24 11:46 ---
most likely this is a duplicate of:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44229
and potentially an LE/BE issue given that it's not reported on *x86*
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44255
--- Comment #4 from mikpe at it dot uu dot se 2010-05-24 16:16 ---
(In reply to comment #3)
most likely this is a duplicate of:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44229
and potentially an LE/BE issue given that it's not reported on *x86*
However:
1. I see the failure on
--- Comment #5 from mikpe at it dot uu dot se 2010-05-24 16:21 ---
Comparing stage2-libiberty/cp-demangle.o with stage3-libiberty/cp-demangle.o
shows that one instruction has had it's source operands swapped:
objdump -d stage2-libiberty/cp-demangle.o a
objdump -d
--- Comment #6 from mikpe at it dot uu dot se 2010-05-24 22:24 ---
The stage 3 comparison failure on ARM is as follows:
...
Bootstrap comparison failure!
libiberty/pic/cp-demangle.o differs
Comparing the disassembly listings of prev-libiberty/pic/cp-demangle.o and
--
rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Target Milestone|--- |4.6.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44255
--- Comment #1 from mikpe at it dot uu dot se 2010-05-23 21:09 ---
The exact same bootstrap comparison failure now also showed up in my attempt to
build gcc-4.6-20100522 on armv5tel-unknown-linux-gnueabi. And like sparc64 the
previous 4.6 weekly snapshot bootstrapped fine.
--
mikpe
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