* [Bug optimization/8178] [3.4 regression] __builtin_ffs broken with -march=k6
[not found] <20021009170600.8178.christianbiere@gmx.de>
@ 2003-06-08 18:50 ` pinskia@physics.uc.edu
2003-06-21 1:13 ` dhazeghi at yahoo dot com
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From: pinskia@physics.uc.edu @ 2003-06-08 18:50 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8178
pinskia@physics.uc.edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |3.4
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2003-06-08 18:50 ` [Bug optimization/8178] [3.4 regression] __builtin_ffs broken with -march=k6 pinskia@physics.uc.edu
@ 2003-06-21 1:13 ` dhazeghi at yahoo dot com
2003-07-07 11:28 ` pinskia at physics dot uc dot edu
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From: dhazeghi at yahoo dot com @ 2003-06-21 1:13 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
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dhazeghi at yahoo dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet| |i586-pc-linux-gnu
GCC host triplet| |i586-pc-linux-gnu
GCC target triplet| |i586-pc-linux-gnu
Priority|P3 |P2
------- Additional Comments From dhazeghi at yahoo dot com 2003-06-21 01:13 -------
Confirmed with mainline (20030620). Does not fail with 3.3 branch.
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2003-06-08 18:50 ` [Bug optimization/8178] [3.4 regression] __builtin_ffs broken with -march=k6 pinskia@physics.uc.edu
2003-06-21 1:13 ` dhazeghi at yahoo dot com
@ 2003-07-07 11:28 ` pinskia at physics dot uc dot edu
2003-07-29 14:30 ` pinskia at physics dot uc dot edu
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From: pinskia at physics dot uc dot edu @ 2003-07-07 11:28 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
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pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |NEW
------- Additional Comments From pinskia at physics dot uc dot edu 2003-07-07 11:28 -------
Still happens on the mainline (20030706).
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2003-07-07 11:28 ` pinskia at physics dot uc dot edu
@ 2003-07-29 14:30 ` pinskia at physics dot uc dot edu
2003-08-28 15:34 ` reichelt at gcc dot gnu dot org
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From: pinskia at physics dot uc dot edu @ 2003-07-29 14:30 UTC (permalink / raw)
To: gcc-bugs
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pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Priority|P2 |P1
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2003-07-29 14:30 ` pinskia at physics dot uc dot edu
@ 2003-08-28 15:34 ` reichelt at gcc dot gnu dot org
2003-08-28 18:01 ` reichelt at gcc dot gnu dot org
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From: reichelt at gcc dot gnu dot org @ 2003-08-28 15:34 UTC (permalink / raw)
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------- Additional Comments From reichelt at gcc dot gnu dot org 2003-08-28 15:34 -------
The testcase
-----------------------------------------
int main() { return __builtin_ffs(4); }
-----------------------------------------
now works on mainline even with -march=k6.
This is probably due to Rogers patch
http://gcc.gnu.org/ml/gcc-cvs/2003-08/msg00818.html
Alas, the following code snippet still fails with -march=k6:
-----------------------------------------
int i=4;
int main() { return __builtin_ffs(i); }
-----------------------------------------
The tests ffs-1.c and ffs-2.c from the testsuite also still fail.
Phil's regression tester says:
Search converges between 2003-02-04-trunk (#213) and 2003-02-05-trunk (#214).
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2003-08-28 15:34 ` reichelt at gcc dot gnu dot org
@ 2003-08-28 18:01 ` reichelt at gcc dot gnu dot org
2003-10-16 17:07 ` ebotcazou at gcc dot gnu dot org
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From: reichelt at gcc dot gnu dot org @ 2003-08-28 18:01 UTC (permalink / raw)
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reichelt at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|3.2 |3.4
------- Additional Comments From reichelt at gcc dot gnu dot org 2003-08-28 18:01 -------
Richard, could you please have a look, since your patch
http://gcc.gnu.org/ml/gcc-cvs/2003-02/msg00241.html
caused the regression?
Thanks,
Volker
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2003-08-28 18:01 ` reichelt at gcc dot gnu dot org
@ 2003-10-16 17:07 ` ebotcazou at gcc dot gnu dot org
2003-10-18 7:27 ` cvs-commit at gcc dot gnu dot org
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From: ebotcazou at gcc dot gnu dot org @ 2003-10-16 17:07 UTC (permalink / raw)
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ebotcazou at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|ebotcazou at libertysurf dot|
|fr |
AssignedTo|unassigned at gcc dot gnu |ebotcazou at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
------- Additional Comments From ebotcazou at gcc dot gnu dot org 2003-10-16 17:07 -------
Fixing.
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2003-10-16 17:07 ` ebotcazou at gcc dot gnu dot org
@ 2003-10-18 7:27 ` cvs-commit at gcc dot gnu dot org
2003-10-18 7:53 ` ebotcazou at gcc dot gnu dot org
2003-10-19 18:00 ` cvs-commit at gcc dot gnu dot org
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From: cvs-commit at gcc dot gnu dot org @ 2003-10-18 7:27 UTC (permalink / raw)
To: gcc-bugs
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------- Additional Comments From cvs-commit at gcc dot gnu dot org 2003-10-18 07:25 -------
Subject: Bug 8178
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: ebotcazou@gcc.gnu.org 2003-10-18 07:25:02
Modified files:
gcc : ChangeLog
gcc/config/i386: i386.md
Log message:
PR optimization/8178
* config/i386/i386.md (*movsi_zero): New insn to set
a register to zero on TARGET_USE_MOV0 targets.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1459&r2=2.1460
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&r1=1.484&r2=1.485
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2003-10-18 7:27 ` cvs-commit at gcc dot gnu dot org
@ 2003-10-18 7:53 ` ebotcazou at gcc dot gnu dot org
2003-10-19 18:00 ` cvs-commit at gcc dot gnu dot org
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From: ebotcazou at gcc dot gnu dot org @ 2003-10-18 7:53 UTC (permalink / raw)
To: gcc-bugs
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ebotcazou at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
------- Additional Comments From ebotcazou at gcc dot gnu dot org 2003-10-18 07:27 -------
See http://gcc.gnu.org/ml/gcc-patches/2003-10/msg01497.html
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2003-10-18 7:53 ` ebotcazou at gcc dot gnu dot org
@ 2003-10-19 18:00 ` cvs-commit at gcc dot gnu dot org
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From: cvs-commit at gcc dot gnu dot org @ 2003-10-19 18:00 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
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------- Additional Comments From cvs-commit at gcc dot gnu dot org 2003-10-19 17:53 -------
Subject: Bug 8178
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: ebotcazou@gcc.gnu.org 2003-10-19 17:53:12
Modified files:
gcc : ChangeLog
gcc/config/i386: i386.md
Log message:
PR optimization/8178
* config/i386/i386.md (*movsi_zero): Delete.
(*ffs_no_cmove): Use ix86_expand_clear to zero the third operand.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1477&r2=2.1478
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&r1=1.485&r2=1.486
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