http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58546
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56858
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61794
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59432
--- Comment #7 from Uroš Bizjak ubizjak at gmail dot com ---
Please see [1] for the explanation of this problem. Your system doesn't support
.cfi directives and the referred patch doesn't handle this situation.
Since EBX register is marked
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59432
--- Comment #8 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Uroš Bizjak from comment #7)
Please see [1] for the explanation of this problem. Your system doesn't
support .cfi directives and the referred patch doesn't handle
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59432
--- Comment #9 from Uroš Bizjak ubizjak at gmail dot com ---
This problem is also seen on CentOS 5, where CFI directives are not supported.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #1 from Uroš Bizjak ubizjak at gmail dot com ---
Patch that extends libgo to use libffi closures is at [1].
[1] https://gcc.gnu.org/ml/gcc-patches/2014-07/msg01355.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61855
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Target||x86
Target
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61855
--- Comment #2 from Uroš Bizjak ubizjak at gmail dot com ---
Author: uros
Date: Mon Jul 21 08:47:48 2014
New Revision: 212886
URL: https://gcc.gnu.org/viewcvs?rev=212886root=gccview=rev
Log:
PR target/61855
* config/i386/avx512fintrin.h
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: ubizjak at gmail dot com
CC: cmang at google dot com
The go.test/test/fixedbugs/bug272.go fails execution on 32bit x86 targets
(Fedora 20):
./bug272.x
BUG2
The testcase works OK
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: ubizjak at gmail dot com
CC: cmang at google dot com
index0-out.go fails execution with -O0 -g -fno-var-tracking-assignments on
32bit x86 target (Fedora 20) with:
BUG
./index0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61855
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--- Comment #5 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Dominique d'Humieres from comment #4)
The following patch
--- ../_clean/gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm.c
2014-07-21 11:21:30.0 +0200
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
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--- Comment
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--- Comment #4 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Uroš Bizjak from comment #3)
(In reply to Ian Lance Taylor from comment #2)
The patch is committed so this bug may be fixed. I haven't tested it on
Alpha, though
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #5 from Uroš Bizjak ubizjak at gmail dot com ---
I forgot to tell that reflect test from libgo testsuite now passes:
PASS: reflect
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: ubizjak at gmail dot com
CC: cmang at google dot com
regexp test from libgo testsuite FAILs on alpha (non-split stack target) due to
too demanding testcase, even with 8G of RAM
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61526
--- Comment #4 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Sandra Loosemore from comment #3)
The testcase added for this bug in GCC 4.9.1 is failing with a link error on
an arm-none-eabi target that doesn't support -shared
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61748
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--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61656
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47230
--- Comment #24 from Uroš Bizjak ubizjak at gmail dot com ---
Fixed (worked around) for real for 4.8.4, 4.9.2 and 4.10.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #7 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Ian Lance Taylor from comment #6)
I don't know why making the types smaller in comment #4 makes any
difference. On a system that does not use split stacks, the runtime
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61871
--- Comment #1 from Uroš Bizjak ubizjak at gmail dot com ---
Ops, I was also testing with this patch:
--cut here--
Index: go/regexp/all_test.go
===
--- go/regexp/all_test.go
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #8 from Uroš Bizjak ubizjak at gmail dot com ---
After lots of debugging...
The problem is with the label that is passed as an argument to
__go_set_defer_retaddr. In function main.$thunk0, in _.179r.cse1 dump, we have:
...
(insn 7
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #9 from Uroš Bizjak ubizjak at gmail dot com ---
To illustrate unreliable approach, please compile following test:
--cut here--
extern void foo (void *);
int test(void)
{
__label__ bla;
foo (bla);
bla:
return 0;
}
--cut here
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #11 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Andreas Schwab from comment #10)
If you never use goto *exp in the same function the value of label is
undefined.
I did try adding goto bla: just before label
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60406
--- Comment #3 from Uroš Bizjak ubizjak at gmail dot com ---
It looks that a hack, mentioned in Comment #0 should use asm goto instead of
goto. The following test:
--cut here--
extern void foo (void *);
int test_bad (int p1, int p2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60406
--- Comment #4 from Uroš Bizjak ubizjak at gmail dot com ---
Alternatively, since __go_set_defer_retaddr always returns 0, we can prevent
split of the label by enclosing it in asm volatiles:
extern int foo (void *);
extern void bar (void);
int
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61871
--- Comment #2 from Uroš Bizjak ubizjak at gmail dot com ---
The backtrace mentions malloc/free - deadlock and the segmentation fault
happens later:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x200011d3270 (LWP
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61871
--- Comment #3 from Uroš Bizjak ubizjak at gmail dot com ---
The size in frame #6 is questionable:
#6 0x025a4b30 in __go_new (size=2199032605516) at
/home/uros/gcc-svn/trunk/libgo/runtime/go-new.c:15
(gdb) f 6
#6 0x025a4b30
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61871
--- Comment #4 from Uroš Bizjak ubizjak at gmail dot com ---
Following patch fixes the test:
--cut here--
Index: runtime/proc.c
===
--- runtime/proc.c (revision 213681
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
Target: i686-pc-linux-gnu
Currently g++.dg/lto/20100302 ICEs in:
Executing on host: /home/uros/gcc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62061
--- Comment #1 from Uroš Bizjak ubizjak at gmail dot com ---
Created attachment 33273
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=33273action=edit
Object files
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62061
--- Comment #2 from Uroš Bizjak ubizjak at gmail dot com ---
This ICE can be triggered also on x86_64 Fedora 20 by passing
-fno-use-linker-plugin to testsuite flags:
make check-c++ RUNTESTFLAGS=--target_board=unix/-fno-use-linker-plugin
lto.exp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62061
--- Comment #4 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Richard Biener from comment #3)
Confirmed on x86_64-linux with -fno-use-linker-plugin. Do you use a linker
plugin on i?86-linux?
No, the system is RHEL 5.10
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62011
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--- Comment #3 from Uroš Bizjak ubizjak at gmail dot com ---
I can also confirm the ICE on Fedora 20 with:
$ ld --version
GNU ld version 2.23.2
Copyright 2012 Free Software Foundation, Inc.
$ ./xgcc -B ./gcc -flto -m32 -O3 pr62208.c
pr62208.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62605
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--- Comment #7 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Richard Biener from comment #6)
Seems to me we want
(bit_xor (bswap32 @0) (bswap32 @1)) - (bswap32 (bit_xor @0 @1))
in match-and-simplify speak.
Please note
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61559
--- Comment #11 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Jakub Jelinek from comment #9)
Aren't these optimizations actually a pessimization for -mmovbe if the inner
bswap is on a read from memory? Assuming the load and bswap
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61559
--- Comment #12 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Uroš Bizjak from comment #11)
This one should be:
(simplify
(bswap (bitop (bswap @0) (bswap @1)))
(bitop @0 @1))
Oh, we already have this. Please
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63170
--- Comment #1 from Uroš Bizjak ubizjak at gmail dot com ---
Probably dup of PR60406.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58945
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Attachment #31126|0 |1
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