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* [Bug target/14406] New: rs6000 abstf2 is broken
@ 2004-03-03 13:53 amodra at bigpond dot net dot au
2004-03-03 13:56 ` [Bug target/14406] " amodra at bigpond dot net dot au
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: amodra at bigpond dot net dot au @ 2004-03-03 13:53 UTC (permalink / raw)
To: gcc-bugs
The following demonstrates an error in the rs6000 abstf2 pattern.
The IBM extended double format uses a sum of two doubles to represent a long
double. The first double is required to be the closest double to the long
double value, which implies that the second double may be of opposite sign to
the first.
#include <stdio.h>
long double x = 0x1.FFFFFFFFFFFFF8P0L;
int main (void)
{
long double y = __builtin_fabsl (x);
union { long double ld; double d[2]; unsigned int x[4]; } u;
u.ld = x;
printf ("%e %e\n", u.d[0], u.d[1]);
printf ("%08x %08x %08x %08x\n", u.x[0], u.x[1], u.x[2], u.x[3]);
u.ld = y;
printf ("%e %e\n", u.d[0], u.d[1]);
printf ("%08x %08x %08x %08x\n", u.x[0], u.x[1], u.x[2], u.x[3]);
return 0;
}
$ gcc/xgcc -Bgcc/ -O1 -mlong-double-128 /src/tmp/fabs.c
$ ./a.out
2.000000e+00 -1.110223e-16
40000000 00000000 bca00000 00000000
2.000000e+00 1.110223e-16
40000000 00000000 3ca00000 00000000
--
Summary: rs6000 abstf2 is broken
Product: gcc
Version: 3.4.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P2
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: amodra at bigpond dot net dot au
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc64-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
@ 2004-03-03 13:56 ` amodra at bigpond dot net dot au
2004-03-03 16:23 ` pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: amodra at bigpond dot net dot au @ 2004-03-03 13:56 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From amodra at bigpond dot net dot au 2004-03-03 13:56 -------
Working on a patch
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed| |1
Known to fail| |3.3.3 3.4.0 3.5.0
Last reconfirmed|0000-00-00 00:00:00 |2004-03-03 13:56:01
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
2004-03-03 13:56 ` [Bug target/14406] " amodra at bigpond dot net dot au
@ 2004-03-03 16:23 ` pinskia at gcc dot gnu dot org
2004-03-04 9:26 ` cvs-commit at gcc dot gnu dot org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-03-03 16:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-03-03 16:23 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-03/msg00275.html>.
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
2004-03-03 13:56 ` [Bug target/14406] " amodra at bigpond dot net dot au
2004-03-03 16:23 ` pinskia at gcc dot gnu dot org
@ 2004-03-04 9:26 ` cvs-commit at gcc dot gnu dot org
2004-03-04 9:54 ` cvs-commit at gcc dot gnu dot org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-03-04 9:26 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-03-04 09:26 -------
Subject: Bug 14406
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: amodra@gcc.gnu.org 2004-03-04 09:26:46
Modified files:
gcc : ChangeLog
gcc/config/rs6000: rs6000.md
Log message:
PR target/14406
* config/rs6000/rs6000.md (abstf2, abstf2+1): Delete define_insn.
(abstf2, abstf2_internal): New define_expand.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3032&r2=2.3033
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.md.diff?cvsroot=gcc&r1=1.296&r2=1.297
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
` (2 preceding siblings ...)
2004-03-04 9:26 ` cvs-commit at gcc dot gnu dot org
@ 2004-03-04 9:54 ` cvs-commit at gcc dot gnu dot org
2004-03-04 11:01 ` amodra at bigpond dot net dot au
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-03-04 9:54 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-03-04 09:54 -------
Subject: Bug 14406
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-branch
Changes by: amodra@gcc.gnu.org 2004-03-04 09:54:26
Modified files:
gcc : ChangeLog
gcc/config/rs6000: rs6000.md
Log message:
PR target/14406
* config/rs6000/rs6000.md (abstf2, abstf2+1): Delete define_insn.
(abstf2, abstf2_internal): New define_expand.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.287&r2=2.2326.2.288
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.284.4.5&r2=1.284.4.6
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
` (3 preceding siblings ...)
2004-03-04 9:54 ` cvs-commit at gcc dot gnu dot org
@ 2004-03-04 11:01 ` amodra at bigpond dot net dot au
2004-03-04 15:54 ` pinskia at gcc dot gnu dot org
2004-03-08 7:30 ` cvs-commit at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: amodra at bigpond dot net dot au @ 2004-03-04 11:01 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From amodra at bigpond dot net dot au 2004-03-04 11:01 -------
Fixed for 3.4.0 and 3.5.0
--
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|3.3.3 3.4.0 3.5.0 |3.3.3
Known to work| |3.4.0 3.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
` (4 preceding siblings ...)
2004-03-04 11:01 ` amodra at bigpond dot net dot au
@ 2004-03-04 15:54 ` pinskia at gcc dot gnu dot org
2004-03-08 7:30 ` cvs-commit at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-03-04 15:54 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-03-04 15:54 -------
Fixed so closing.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |3.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/14406] rs6000 abstf2 is broken
2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
` (5 preceding siblings ...)
2004-03-04 15:54 ` pinskia at gcc dot gnu dot org
@ 2004-03-08 7:30 ` cvs-commit at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-03-08 7:30 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-03-08 07:30 -------
Subject: Bug 14406
CVSROOT: /cvs/gcc
Module name: gcc
Branch: hammer-3_3-branch
Changes by: amodra@gcc.gnu.org 2004-03-08 07:30:07
Modified files:
gcc : ChangeLog.hammer
gcc/config/rs6000: rs6000.md
Log message:
PR target/14406
* config/rs6000/rs6000.md (abstf2, abstf2+1): Delete define_insn.
(abstf2, abstf2_internal): New define_expand.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.hammer.diff?cvsroot=gcc&only_with_tag=hammer-3_3-branch&r1=1.1.2.363&r2=1.1.2.364
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.md.diff?cvsroot=gcc&only_with_tag=hammer-3_3-branch&r1=1.221.4.13&r2=1.221.4.14
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14406
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2004-03-08 7:30 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2004-03-03 13:53 [Bug target/14406] New: rs6000 abstf2 is broken amodra at bigpond dot net dot au
2004-03-03 13:56 ` [Bug target/14406] " amodra at bigpond dot net dot au
2004-03-03 16:23 ` pinskia at gcc dot gnu dot org
2004-03-04 9:26 ` cvs-commit at gcc dot gnu dot org
2004-03-04 9:54 ` cvs-commit at gcc dot gnu dot org
2004-03-04 11:01 ` amodra at bigpond dot net dot au
2004-03-04 15:54 ` pinskia at gcc dot gnu dot org
2004-03-08 7:30 ` cvs-commit at gcc dot gnu dot org
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