* [Bug c++/58542] std::atomic<__int128_t>::store broken with -march=corei7
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
@ 2013-09-26 14:04 ` 2013.bugzilla.gcc.gnu.org at ingomueller dot net
2013-09-26 17:20 ` [Bug rtl-optimization/58542] " ubizjak at gmail dot com
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: 2013.bugzilla.gcc.gnu.org at ingomueller dot net @ 2013-09-26 14:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
--- Comment #1 from Ingo Müller <2013.bugzilla.gcc.gnu.org at ingomueller dot net> ---
Created attachment 30901
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30901&action=edit
Minimal "working" example of how std::atomic<__int128_t>::store can break.
>From gcc-bugs-return-430603-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Sep 26 14:23:30 2013
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Subject: [Bug tree-optimization/57223] Auto-vectorization fails for nested multiple loops depending on type of array
Date: Thu, 26 Sep 2013 14:23:00 -0000
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--- Comment #5 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Usishchev Yury from comment #3)
> I'm testing it on current trunk, and second loop is not vectorized both with
> floating point and integer types.
> For floating point types it is not vectorized due to control flow in loop:
>
> <bb 15>:
> // ...
> if (t_56 > _61)
> goto <bb 16>;
> else
> goto <bb 17>;
> <bb 16>:
> <bb 17>:
> # iftmp.2_7 = PHI <_61(16), t_56(15)>
>
> This can be optimized to MIN_EXPR in phiopt pass, but is not because of NaNs:
Even without MIN_EXPR, ifcvt should turn this into a COND_EXPR that can be
vectorized, no?
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] std::atomic<__int128_t>::store broken with -march=corei7
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
2013-09-26 14:04 ` [Bug c++/58542] " 2013.bugzilla.gcc.gnu.org at ingomueller dot net
@ 2013-09-26 17:20 ` ubizjak at gmail dot com
2013-09-26 21:20 ` [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] subreg splitting pass mishandles TImode immediates ubizjak at gmail dot com
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ubizjak at gmail dot com @ 2013-09-26 17:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-09-26
Component|c++ |rtl-optimization
Ever confirmed|0 |1
--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Confirmed, it is subreg1 pass that splits:
(insn 10 9 11 3 (set (reg:TI 107)
(const_double -1 [0xffffffffffffffff] 0 [0] 0 [0] 0 [0]))
/usr/include/c++/4.8.1/atomic:199 84 {*movti_internal}
(nil))
to:
(insn 58 57 59 3 (set (reg:DI 130)
(const_int -1 [0xffffffffffffffff])) /usr/include/c++/4.8.1/atomic:199
85 {*movdi_internal}
(nil))
(insn 59 58 11 3 (set (reg:DI 131 [+8 ])
(const_int 0 [0])) /usr/include/c++/4.8.1/atomic:199 85
{*movdi_internal}
(nil))
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Subject: [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] std::atomic<__int128_t>::store broken with -march=corei7
Date: Thu, 26 Sep 2013 17:22:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.7.4
>From gcc-bugs-return-430625-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Sep 26 17:22:41 2013
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] std::atomic<__int128_t>::store broken with -march=corei7
Date: Thu, 26 Sep 2013 17:22:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|std::atomic<__int128_t>::st |[4.7/4.8/4.9 Regression]
|ore broken with |std::atomic<__int128_t>::st
|-march=corei7 |ore broken with
| |-march=corei7
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fails on all branches, including trunk.
>From gcc-bugs-return-430627-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Sep 26 17:44:50 2013
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From: "edlinger at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/58113] [4.9 Regression] gfortran.dg/round_4.f90 FAILs
Date: Thu, 26 Sep 2013 17:44:00 -0000
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--- Comment #5 from edlinger at gcc dot gnu.org ---
Author: edlinger
Date: Thu Sep 26 17:44:13 2013
New Revision: 202954
URL: http://gcc.gnu.org/viewcvs?rev 2954&root=gcc&view=rev
Log:
2013-09-26 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR fortran/58113
* gfortran.dg/round_4.f90: Check for rounding support.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/round_4.f90
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] subreg splitting pass mishandles TImode immediates
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
2013-09-26 14:04 ` [Bug c++/58542] " 2013.bugzilla.gcc.gnu.org at ingomueller dot net
2013-09-26 17:20 ` [Bug rtl-optimization/58542] " ubizjak at gmail dot com
@ 2013-09-26 21:20 ` ubizjak at gmail dot com
2013-10-08 16:10 ` ubizjak at gmail dot com
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ubizjak at gmail dot com @ 2013-09-26 21:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |iant at google dot com,
| |rth at gcc dot gnu.org
Summary|[4.7/4.8/4.9 Regression] |[4.7/4.8/4.9 Regression]
|std::atomic<__int128_t>::st |subreg splitting pass
|ore broken with |mishandles TImode
|-march=corei7 |immediates
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Adjusted Summary, CC'd authors.
>From gcc-bugs-return-430635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Sep 26 22:41:51 2013
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From: "regehr at cs dot utah.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/58546] volatile bug and also larger code at -Os
Date: Thu, 26 Sep 2013 22:41:00 -0000
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--- Comment #2 from John Regehr <regehr at cs dot utah.edu> ---
I agree, this is not very likely to cause problems in practice, though I
selfishly hope that it gets fixed because then this bug will stop getting in
our way when we look for other volatile bugs.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] subreg splitting pass mishandles TImode immediates
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (2 preceding siblings ...)
2013-09-26 21:20 ` [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] subreg splitting pass mishandles TImode immediates ubizjak at gmail dot com
@ 2013-10-08 16:10 ` ubizjak at gmail dot com
2013-10-08 18:23 ` ubizjak at gmail dot com
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ubizjak at gmail dot com @ 2013-10-08 16:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
The problem actually starts in expand_atomic_compare_and_swap, in:
(gdb) list
7339 create_convert_operand_to (&ops[3], expected, mode, true);
7340 create_convert_operand_to (&ops[4], desired, mode, true);
7341 create_integer_operand (&ops[5], is_weak);
7342 create_integer_operand (&ops[6], succ_model);
7343 create_integer_operand (&ops[7], fail_model);
7344 expand_insn (icode, 8, ops);
ops[4] is converted in unsigned mode, so from "desired" operand:
(gdb) p debug_rtx (desired)
(const_int -1 [0xffffffffffffffff])
we got:
(gdb) p ops[4]
$45 = {type = EXPAND_CONVERT_TO, unsigned_p = 1, unused = 0, mode = TImode,
value = 0x7fffeffc21e0}
(gdb) p debug_rtx (ops[4].value)
(const_double -1 [0xffffffffffffffff] 0 [0] 0 [0] 0 [0])
So, it is actually expansion of atomic_compare_and_swap, which doesn't account
for signedness of "desired" operand.
Manually changing the argument from "true" to "false" for ops[4] generates
correct code.
>From gcc-bugs-return-431315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Oct 08 16:23:05 2013
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From: "dehao at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/58619] ICE building in gen_combined_adhoc_loc
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--- Comment #5 from dehao at gcc dot gnu.org ---
Author: dehao
Date: Tue Oct 8 16:22:57 2013
New Revision: 203284
URL: http://gcc.gnu.org/viewcvs?rev 3284&root=gcc&view=rev
Log:
Backport r203269.
PR tree-optimization/58619
2013-10-08 Dehao Chen <dehao@google.com>
* tree-inline.c (copy_phis_for_bb): Combine location data
only if non-null.
Modified:
branches/google/gcc-4_8/gcc/tree-inline.c
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] subreg splitting pass mishandles TImode immediates
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (3 preceding siblings ...)
2013-10-08 16:10 ` ubizjak at gmail dot com
@ 2013-10-08 18:23 ` ubizjak at gmail dot com
2013-10-23 12:13 ` [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode ubizjak at gmail dot com
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ubizjak at gmail dot com @ 2013-10-08 18:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 30968
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30968&action=edit
patch that converts arguments to __atomic builtins in signed mode
Patch in testing.
>From gcc-bugs-return-431324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Oct 08 18:25:40 2013
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Subject: [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
Date: Tue, 08 Oct 2013 18:25:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.7/4.8/4.9 Regression] |[4.7/4.8/4.9 Regression]
|subreg splitting pass |Arguments of __atomic_*
|mishandles TImode |functions are converted in
|immediates |unsigned mode
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
Update summary (again).
>From gcc-bugs-return-431325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Oct 08 18:38:45 2013
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Subject: [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
Date: Tue, 08 Oct 2013 18:38:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-p
| |atches/2013-10/msg00496.htm
| |l
--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch at [1].
[1] http://gcc.gnu.org/ml/gcc-patches/2013-10/msg00496.html
>From gcc-bugs-return-431326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Oct 08 18:45:06 2013
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/58570] [4.9 Regression] wrong code for bitfields at -O2 and above
Date: Tue, 08 Oct 2013 18:45:00 -0000
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--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> No. You only assume an alias if _both_ fields are bit fields.
> But in my example only one "a" is a volatile bit field the other
> is a normal member "b".
Then they won't be affected by the bug, see my explanation to Richard.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (4 preceding siblings ...)
2013-10-08 18:23 ` ubizjak at gmail dot com
@ 2013-10-23 12:13 ` ubizjak at gmail dot com
2013-10-23 17:47 ` rth at gcc dot gnu.org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ubizjak at gmail dot com @ 2013-10-23 12:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
URL|http://gcc.gnu.org/ml/gcc-p |
|atches/2013-10/msg00496.htm |
|l |
Assignee|ubizjak at gmail dot com |unassigned at gcc dot gnu.org
--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #8)
> Patch at [1].
According to a review, the proposed fix is wrong.
I will humbly step aside and leave the honors of the proper fix to someone
else.
>From gcc-bugs-return-432547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Oct 23 12:15:09 2013
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58822] Segfault when calling make_shared
Date: Wed, 23 Oct 2013 12:15:00 -0000
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--- Comment #19 from Paolo Carlini <paolo.carlini at oracle dot com> ---
I'm pretty sure it isn't. It's easy to see why: in the testcase are you using
*all* the facilities provided by std::shared_ptr as standardized? I don't think
so! Thus just imagine having the class there, and commenting out all the member
functions you don't use. Likewise for the free functions. Also, including
<memory> means *a ton* of code which definitely has *nothing* to do with
std::shared_ptr. Normally, a C++ testcase is less than 100 lines without
includes. The exceptions are *extremely* rare.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (5 preceding siblings ...)
2013-10-23 12:13 ` [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode ubizjak at gmail dot com
@ 2013-10-23 17:47 ` rth at gcc dot gnu.org
2013-10-24 22:28 ` rth at gcc dot gnu.org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rth at gcc dot gnu.org @ 2013-10-23 17:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rth at gcc dot gnu.org
--- Comment #10 from Richard Henderson <rth at gcc dot gnu.org> ---
Thanks for reminding me of this.
The bug isn't in expand_atomic_compare_and_swap, and the parameters
to create_convert_operand_to, because the argument is already TImode:
<integer_cst 0x7ffff19d75e0
type <integer_type 0x7ffff19e1a80 __int128 unsigned>
constant -1>
The bug is either in expand_expr_* in creating a const_int instead of
a const_double, or in convert_to_mode (or its callees) in misinterpreting
the const_int.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (6 preceding siblings ...)
2013-10-23 17:47 ` rth at gcc dot gnu.org
@ 2013-10-24 22:28 ` rth at gcc dot gnu.org
2013-10-25 20:06 ` rth at gcc dot gnu.org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rth at gcc dot gnu.org @ 2013-10-24 22:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
--- Comment #11 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Thu Oct 24 22:27:53 2013
New Revision: 204040
URL: http://gcc.gnu.org/viewcvs?rev=204040&root=gcc&view=rev
Log:
PR rtl/58542
* optabs.c (maybe_emit_atomic_exchange): Use create_input_operand
instead of create_convert_operand_to.
(maybe_emit_sync_lock_test_and_set): Likewise.
(expand_atomic_compare_and_swap): Likewise.
(maybe_emit_compare_and_swap_exchange_loop): Don't convert_modes.
Added:
trunk/gcc/testsuite/gcc.dg/atomic-store-6.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/optabs.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (7 preceding siblings ...)
2013-10-24 22:28 ` rth at gcc dot gnu.org
@ 2013-10-25 20:06 ` rth at gcc dot gnu.org
2013-10-25 20:09 ` rth at gcc dot gnu.org
2013-10-25 20:11 ` rth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rth at gcc dot gnu.org @ 2013-10-25 20:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
--- Comment #12 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Fri Oct 25 20:06:20 2013
New Revision: 204076
URL: http://gcc.gnu.org/viewcvs?rev=204076&root=gcc&view=rev
Log:
PR rtl/58542
* optabs.c (maybe_emit_atomic_exchange): Use create_input_operand
instead of create_convert_operand_to.
(maybe_emit_sync_lock_test_and_set): Likewise.
(expand_atomic_compare_and_swap): Likewise.
(maybe_emit_compare_and_swap_exchange_loop): Don't convert_modes.
Added:
branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/atomic-store-6.c
Modified:
branches/gcc-4_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/optabs.c
branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (8 preceding siblings ...)
2013-10-25 20:06 ` rth at gcc dot gnu.org
@ 2013-10-25 20:09 ` rth at gcc dot gnu.org
2013-10-25 20:11 ` rth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rth at gcc dot gnu.org @ 2013-10-25 20:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
--- Comment #13 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Fri Oct 25 20:09:13 2013
New Revision: 204077
URL: http://gcc.gnu.org/viewcvs?rev=204077&root=gcc&view=rev
Log:
PR rtl/58542
* optabs.c (maybe_emit_atomic_exchange): Use create_input_operand
instead of create_convert_operand_to.
(maybe_emit_sync_lock_test_and_set): Likewise.
(expand_atomic_compare_and_swap): Likewise.
(maybe_emit_compare_and_swap_exchange_loop): Don't convert_modes.
Added:
branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/atomic-store-6.c
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/optabs.c
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug rtl-optimization/58542] [4.7/4.8/4.9 Regression] Arguments of __atomic_* functions are converted in unsigned mode
2013-09-26 14:03 [Bug c++/58542] New: std::atomic<__int128_t>::store broken with -march=corei7 2013.bugzilla.gcc.gnu.org at ingomueller dot net
` (9 preceding siblings ...)
2013-10-25 20:09 ` rth at gcc dot gnu.org
@ 2013-10-25 20:11 ` rth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rth at gcc dot gnu.org @ 2013-10-25 20:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58542
Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Richard Henderson <rth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 12+ messages in thread