* [Bug c++/17581] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
@ 2004-09-21 8:53 ` schwab at suse dot de
2004-09-21 8:56 ` alottem at yahoo dot com
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From: schwab at suse dot de @ 2004-09-21 8:53 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From schwab at suse dot de 2004-09-21 08:53 -------
Note that the correct printf format for long long is "%llx", not "%x".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug c++/17581] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
2004-09-21 8:53 ` [Bug c++/17581] " schwab at suse dot de
@ 2004-09-21 8:56 ` alottem at yahoo dot com
2004-09-21 12:22 ` alottem at yahoo dot com
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From: alottem at yahoo dot com @ 2004-09-21 8:56 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From alottem at yahoo dot com 2004-09-21 08:56 -------
Oooops, right. Thanks.
But the bug still holds, even with %llx.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug c++/17581] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
2004-09-21 8:53 ` [Bug c++/17581] " schwab at suse dot de
2004-09-21 8:56 ` alottem at yahoo dot com
@ 2004-09-21 12:22 ` alottem at yahoo dot com
2004-09-21 13:04 ` [Bug rtl-optimization/17581] [3.4 Regression] " pinskia at gcc dot gnu dot org
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From: alottem at yahoo dot com @ 2004-09-21 12:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From alottem at yahoo dot com 2004-09-21 12:22 -------
The test case was further minimized to the following:
------------------------ cut here ------------------------
#include <stdio.h>
int
f(long unsigned x1)
{
unsigned long long ctl_bitvec = 0;
switch(x1) {
case 21:
ctl_bitvec |= 1;
ctl_bitvec |= 2;
ctl_bitvec |= 8;
break;
default:
break;
}
printf("%llx\n", ctl_bitvec);
return ctl_bitvec;
}
main() {
f(21);
}
------------------------ cut here ------------------------
And running:
% make && make run
/usr/intel/pkgs/gcc/3.4/bin/g++ -O2 test.c -o test_o2
/usr/intel/pkgs/gcc/3.4/bin/g++ -O test.c -o test_o
./test_o2
8
./test_o
b
It does not fail with gcc 3.3.2. unfortunately, I was not able to test with
versions later than 3.4.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug rtl-optimization/17581] [3.4 Regression] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
` (2 preceding siblings ...)
2004-09-21 12:22 ` alottem at yahoo dot com
@ 2004-09-21 13:04 ` pinskia at gcc dot gnu dot org
2004-10-29 2:12 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
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From: pinskia at gcc dot gnu dot org @ 2004-09-21 13:04 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-21 13:03 -------
Confirmed with the last example in 3.4.0.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|c++ |rtl-optimization
Ever Confirmed| |1
Keywords| |wrong-code
Known to fail| |3.4.0
Known to work| |4.0.0
Last reconfirmed|0000-00-00 00:00:00 |2004-09-21 13:03:42
date| |
Summary|Long long arithmetic fails |[3.4 Regression] Long long
|inside a switch/case |arithmetic fails inside a
|statement when compiled with|switch/case statement when
|-O2 |compiled with -O2
Target Milestone|--- |3.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug rtl-optimization/17581] [3.4 Regression] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
` (3 preceding siblings ...)
2004-09-21 13:04 ` [Bug rtl-optimization/17581] [3.4 Regression] " pinskia at gcc dot gnu dot org
@ 2004-10-29 2:12 ` pinskia at gcc dot gnu dot org
2004-10-30 0:57 ` cvs-commit at gcc dot gnu dot org
` (3 subsequent siblings)
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From: pinskia at gcc dot gnu dot org @ 2004-10-29 2:12 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-29 02:12 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-10/msg02573.html>.
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug rtl-optimization/17581] [3.4 Regression] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
` (4 preceding siblings ...)
2004-10-29 2:12 ` pinskia at gcc dot gnu dot org
@ 2004-10-30 0:57 ` cvs-commit at gcc dot gnu dot org
2004-10-30 18:03 ` cvs-commit at gcc dot gnu dot org
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From: cvs-commit at gcc dot gnu dot org @ 2004-10-30 0:57 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-10-30 00:57 -------
Subject: Bug 17581
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: sayle@gcc.gnu.org 2004-10-30 00:56:59
Modified files:
gcc : ChangeLog cselib.c gcse.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.dg: pr17581-1.c
Log message:
PR rtl-optimization/17581
* cselib.c (cselib_process_insn): The last instruction of a libcall
block, with the REG_RETVAL note, should be considered in the libcall.
* gcse.c (do_local_cprop): Allow constants to be propagated outside
of libcall blocks.
(adjust_libcall_notes): Use simplify_replace_rtx instead of
replace_rtx to avoid creating invalid RTL in REG_RETVAL notes.
* gcc.dg/pr17581-1.c: New test case.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6100&r2=2.6101
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cselib.c.diff?cvsroot=gcc&r1=1.52&r2=1.53
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcse.c.diff?cvsroot=gcc&r1=1.320&r2=1.321
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4519&r2=1.4520
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr17581-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug rtl-optimization/17581] [3.4 Regression] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
` (5 preceding siblings ...)
2004-10-30 0:57 ` cvs-commit at gcc dot gnu dot org
@ 2004-10-30 18:03 ` cvs-commit at gcc dot gnu dot org
2004-10-30 18:12 ` pinskia at gcc dot gnu dot org
2004-10-30 23:06 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-10-30 18:03 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-10-30 18:03 -------
Subject: Bug 17581
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-branch
Changes by: sayle@gcc.gnu.org 2004-10-30 18:02:59
Modified files:
gcc : ChangeLog cselib.c gcse.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.dg: pr17581-1.c
Log message:
PR rtl-optimization/17581
* cselib.c (cselib_process_insn): The last instruction of a libcall
block, with the REG_RETVAL note, should be considered in the libcall.
* gcse.c (do_local_cprop): Allow constants to be propagated outside
of libcall blocks.
(adjust_libcall_notes): Use simplify_replace_rtx instead of
replace_rtx to avoid creating invalid RTL in REG_RETVAL notes.
* gcc.dg/pr17581-1.c: New test case.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.677&r2=2.2326.2.678
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cselib.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.32.4.6&r2=1.32.4.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcse.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.288.2.8&r2=1.288.2.9
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.300&r2=1.3389.2.301
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr17581-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.2.2.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug rtl-optimization/17581] [3.4 Regression] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
` (6 preceding siblings ...)
2004-10-30 18:03 ` cvs-commit at gcc dot gnu dot org
@ 2004-10-30 18:12 ` pinskia at gcc dot gnu dot org
2004-10-30 23:06 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-30 18:12 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-30 18:12 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug rtl-optimization/17581] [3.4 Regression] Long long arithmetic fails inside a switch/case statement when compiled with -O2
2004-09-21 8:45 [Bug c++/17581] New: Long long arithmetic fails inside a switch/case statement when compiled with -O2 alottem at yahoo dot com
` (7 preceding siblings ...)
2004-10-30 18:12 ` pinskia at gcc dot gnu dot org
@ 2004-10-30 23:06 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-30 23:06 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-30 23:06 -------
*** Bug 18084 has been marked as a duplicate of this bug. ***
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |knutejunk at austin dot rr
| |dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17581
^ permalink raw reply [flat|nested] 10+ messages in thread