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* [Bug c/12308] New: '387 mode switching clobbers flags
@ 2003-09-17  2:35 stuart at apple dot com
  2003-09-17  7:17 ` [Bug target/12308] " pinskia at gcc dot gnu dot org
                   ` (14 more replies)
  0 siblings, 15 replies; 16+ messages in thread
From: stuart at apple dot com @ 2003-09-17  2:35 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=12308

           Summary: '387 mode switching clobbers flags
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: stuart at apple dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-apple-darwin7.0.0b1
  GCC host triplet: i686-apple-darwin7.0.0b1
GCC target triplet: i686-apple-darwin7.0.0b1

We found this problem on Darwin/x86, but we believe it will reproduce on GNU/Linux/x86.

Pre-PNI '387s need to switch into "truncate towards zero" mode in order to convert a double into 
an integral type.  The testcase is a pathological instance where the five-instruction mode-
switching idiom lands between a compare and a subsequent conditional jump ("if (x)" in the 
testcase).  Subsequent passes notice the flags set by the compare are lost, and delete the 
compare instruction.

Here is the '387 mode-switching idiom:

        fnstcw  -6(%ebp)                                                    store '387 Control Word register
        movzwl  -6(%ebp), %eax
        orb     $12, %ah                                                      compute "truncate towards zero" mode
        movw    %ax, -8(%ebp)
        fldcw   -8(%ebp)                                                      set '387 to "truncate towards zero" mode

Theoretically, the compiler could issue the idiom once in the prologue, and the "fldcw -6(%ebp)" to 
switch modes for zero-trunc mode and "fldcw -6(%ebp)" to restore "round nearest" mode.  Instead, 
it seems to re-issue the entire idiom every time it needs to issue an fp->int conversion.

The short-term hack is to mark the mode-switching idiom (the "orb") as clobbering the flags.  (We 
have such a patch, if you like.)

The better long-term fix is to fully apply the lcm.c:optimize_mode_switching() feature.

Getting this working correctly may be difficult; mistakes will cause subtle rounding errors that may 
or may not be noticed.  I humbly suggest the fix include support for correct code without the 
optimize_mode_switching() pass; perhaps a flag "-fno-optimize-mode-switching" could cause an 
fldcw-fistp-fldcw sequence.  This should be a significant help when a mode-switching bug is 
suspected.

If your P4 supports PNI (P4 "Prescott New Instructions"), there is a new instruction ("fisttp") that 
will convert st(0) into an integral type, truncating towards zero, regardless of the current rounding 
mode set in CW.  This is clearly the preferred (modeless) solution, but it doesn't work on every P4, 
and won't work on anything older.

Here is the commandline used to compile the testcase:

   gcc -g -Wall -O2 -o test test.c -save-temps

You need -O2 or equivalent to see the problem.

Here is the testcase:

----------------------------------------------------
/* this #include is only for the abort() decl; may be omitted */
#include <stdlib.h>

static unsigned char x = 0;
static unsigned char y = 0;

float
width(void)
{
  return 0.0f;
}

int
foo(void)
{
  float w = width();
  int index;

  if (x) {
    index = y ? 2 : 1;
  } else {
    index = y ? 2 : 0;
  }

  return index + (int)w;
}

int
main (void)
{
  int x = foo() ;
  if (x)
    abort();
  return 0;
}
------------------------------------------------


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
@ 2003-09-17  7:17 ` pinskia at gcc dot gnu dot org
  2003-10-05 17:18 ` pinskia at gcc dot gnu dot org
                   ` (13 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-09-17  7:17 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=12308


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c                           |target
           Keywords|                            |wrong-code


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
  2003-09-17  7:17 ` [Bug target/12308] " pinskia at gcc dot gnu dot org
@ 2003-10-05 17:18 ` pinskia at gcc dot gnu dot org
  2003-10-05 17:28 ` pinskia at gcc dot gnu dot org
                   ` (12 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-10-05 17:18 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=12308


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-10-05 17:18:12
               date|                            |


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-10-05 17:18 -------
The problem is that fix_truncsi_memory does say that it clobbers flags (it might be easy 
just to mark this as it clobbers the flags.


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
  2003-09-17  7:17 ` [Bug target/12308] " pinskia at gcc dot gnu dot org
  2003-10-05 17:18 ` pinskia at gcc dot gnu dot org
@ 2003-10-05 17:28 ` pinskia at gcc dot gnu dot org
  2003-10-17 18:20 ` pinskia at gcc dot gnu dot org
                   ` (11 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-10-05 17:28 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=12308


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-10-05 17:28 -------
Actually this is fixed on the mainline already:
        fnstcw  -2(%ebp)
        movw    -2(%ebp), %ax
        movb    $12, %ah
        movw    %ax, -4(%ebp)
        sbbl    %edx, %edx
        fldcw   -4(%ebp)
Note no use of orb, instead it uses movb.


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (2 preceding siblings ...)
  2003-10-05 17:28 ` pinskia at gcc dot gnu dot org
@ 2003-10-17 18:20 ` pinskia at gcc dot gnu dot org
  2003-10-20 23:54 ` stuart at apple dot com
                   ` (10 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-10-17 18:20 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=12308


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.4


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (3 preceding siblings ...)
  2003-10-17 18:20 ` pinskia at gcc dot gnu dot org
@ 2003-10-20 23:54 ` stuart at apple dot com
  2003-12-11 20:00 ` pinskia at gcc dot gnu dot org
                   ` (9 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: stuart at apple dot com @ 2003-10-20 23:54 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=12308


stuart at apple dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


------- Additional Comments From stuart at apple dot com  2003-10-20 23:17 -------
The testcase still fails if compiled -Os .

Quoting the original description, "The better long-term fix is to fully apply the lcm.c:
optimize_mode_switching() feature."


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (4 preceding siblings ...)
  2003-10-20 23:54 ` stuart at apple dot com
@ 2003-12-11 20:00 ` pinskia at gcc dot gnu dot org
  2004-01-19 20:31 ` pinskia at gcc dot gnu dot org
                   ` (8 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-12-11 20:00 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-12-11 20:00 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEW
   Target Milestone|3.4                         |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (5 preceding siblings ...)
  2003-12-11 20:00 ` pinskia at gcc dot gnu dot org
@ 2004-01-19 20:31 ` pinskia at gcc dot gnu dot org
  2004-01-21  7:13 ` dhazeghi at yahoo dot com
                   ` (7 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-01-19 20:31 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-01-19 20:31 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-01/msg01512.html>.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (6 preceding siblings ...)
  2004-01-19 20:31 ` pinskia at gcc dot gnu dot org
@ 2004-01-21  7:13 ` dhazeghi at yahoo dot com
  2004-01-21 20:54 ` cvs-commit at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: dhazeghi at yahoo dot com @ 2004-01-21  7:13 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From dhazeghi at yahoo dot com  2004-01-21 07:13 -------
Patch approved for mainline <http://gcc.gnu.org/ml/gcc-patches/2004-01/msg01974.html>. 
Please apply.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (7 preceding siblings ...)
  2004-01-21  7:13 ` dhazeghi at yahoo dot com
@ 2004-01-21 20:54 ` cvs-commit at gcc dot gnu dot org
  2004-01-21 20:55 ` pinskia at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-01-21 20:54 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-01-21 20:54 -------
Subject: Bug 12308

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2004-01-21 20:53:54

Modified files:
	gcc            : ChangeLog 

Log message:
	2004-01-21  Caroline Tice <ctice@apple.com>
	
	PR target/12308
	* config/i386/i386.md (fix_truncxfdi2): Add clause to clobber
	flags register.
	(fix_truncdfdi2): Likewise.
	(fix_truncsfdi2): Likewise.
	(*fix_truncdi_1): Likewise.
	(fix_truncxfsi2): Likewise.
	(fix_truncdfsi2): Likewise.
	(fix_truncsfsi2): Likewise.
	(*fix_truncsi_1): Likewise.
	(fix_truncxfhi2): Likewise.
	(fix_truncdfhi2): Likewise.
	(fix_truncsfhi2): Likewise.
	(*fix_trunchi_1): Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.2401&r2=2.2402



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (8 preceding siblings ...)
  2004-01-21 20:54 ` cvs-commit at gcc dot gnu dot org
@ 2004-01-21 20:55 ` pinskia at gcc dot gnu dot org
  2004-03-15  8:34 ` matt at use dot net
                   ` (4 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-01-21 20:55 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-01-21 20:55 -------
Fixed for 3.5.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (9 preceding siblings ...)
  2004-01-21 20:55 ` pinskia at gcc dot gnu dot org
@ 2004-03-15  8:34 ` matt at use dot net
  2004-03-15  8:42 ` matt at use dot net
                   ` (3 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: matt at use dot net @ 2004-03-15  8:34 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From matt at use dot net  2004-03-15 08:33 -------
Any chance this will get backported to 3.3.4 or 3.4.1?

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (10 preceding siblings ...)
  2004-03-15  8:34 ` matt at use dot net
@ 2004-03-15  8:42 ` matt at use dot net
  2004-03-27 16:15 ` cvs-commit at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: matt at use dot net @ 2004-03-15  8:42 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From matt at use dot net  2004-03-15 08:42 -------
Any chance this will get backported to 3.3.4 or 3.4.1? Mozilla is affected by 
this bug, and has imeplemented a workaround (turn off certain optimizations). 
It would be a shame to wait until 3.5 is released.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (11 preceding siblings ...)
  2004-03-15  8:42 ` matt at use dot net
@ 2004-03-27 16:15 ` cvs-commit at gcc dot gnu dot org
  2004-04-22 17:50 ` cvs-commit at gcc dot gnu dot org
  2005-03-11  9:49 ` uros at kss-loka dot si
  14 siblings, 0 replies; 16+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-03-27 16:15 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-03-27 16:15 -------
Subject: Bug 12308

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_3-rhl-branch
Changes by:	jakub@gcc.gnu.org	2004-03-27 16:15:24

Modified files:
	gcc            : ChangeLog 
	gcc/testsuite  : ChangeLog 
	gcc/config/i386: i386.md 
Added files:
	gcc/testsuite/gcc.c-torture/execute: 20040311-1.c 

Log message:
	PR target/12308
	Backport from mainline
	
	2004-01-21  Caroline Tice  <ctice@apple.com>
	* config/i386/i386.md (fix_truncxfdi2): Add clause to clobber
	flags register.
	(fix_truncdfdi2): Likewise.
	(fix_truncsfdi2): Likewise.
	(*fix_truncdi_1): Likewise.
	(fix_truncxfsi2): Likewise.
	(fix_truncdfsi2): Likewise.
	(fix_truncsfsi2): Likewise.
	(*fix_truncsi_1): Likewise.
	(fix_truncxfhi2): Likewise.
	(fix_truncdfhi2): Likewise.
	(fix_truncsfhi2): Likewise.
	(*fix_trunchi_1): Likewise.
	
	* config/i386/i386.md (fix_trunctfdi2, fix_trunctfsi2,
	fix_trunctfhi2): Likewise.
	
	PR target/12308
	* gcc.c-torture/execute/20040311-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-rhl-branch&r1=1.16114.2.523.2.96&r2=1.16114.2.523.2.97
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-rhl-branch&r1=1.2261.2.170.2.49&r2=1.2261.2.170.2.50
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&only_with_tag=gcc-3_3-rhl-branch&r1=1.404.2.14.4.12&r2=1.404.2.14.4.13
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20040311-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-rhl-branch&r1=NONE&r2=1.1.4.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (12 preceding siblings ...)
  2004-03-27 16:15 ` cvs-commit at gcc dot gnu dot org
@ 2004-04-22 17:50 ` cvs-commit at gcc dot gnu dot org
  2005-03-11  9:49 ` uros at kss-loka dot si
  14 siblings, 0 replies; 16+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-04-22 17:50 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-04-22 17:35 -------
Subject: Bug 12308

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-rhl-branch
Changes by:	jakub@gcc.gnu.org	2004-04-22 17:35:14

Modified files:
	gcc            : ChangeLog 
	gcc/config/i386: i386.md 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/execute: 20040311-1.c 

Log message:
	2004-01-21  Caroline Tice <ctice@apple.com>
	
	PR target/12308
	* config/i386/i386.md (fix_truncxfdi2): Add clause to clobber
	flags register.
	(fix_truncdfdi2): Likewise.
	(fix_truncsfdi2): Likewise.
	(*fix_truncdi_1): Likewise.
	(fix_truncxfsi2): Likewise.
	(fix_truncdfsi2): Likewise.
	(fix_truncsfsi2): Likewise.
	(*fix_truncsi_1): Likewise.
	(fix_truncxfhi2): Likewise.
	(fix_truncdfhi2): Likewise.
	(fix_truncsfhi2): Likewise.
	(*fix_trunchi_1): Likewise.
	
	2004-03-11  Jakub Jelinek  <jakub@redhat.com>
	
	PR target/12308
	* gcc.c-torture/execute/20040311-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=2.2326.2.399.2.11&r2=2.2326.2.399.2.12
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=1.502.2.3&r2=1.502.2.3.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=1.3389.2.170&r2=1.3389.2.170.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20040311-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=NONE&r2=1.1.16.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug target/12308] '387 mode switching clobbers flags
  2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
                   ` (13 preceding siblings ...)
  2004-04-22 17:50 ` cvs-commit at gcc dot gnu dot org
@ 2005-03-11  9:49 ` uros at kss-loka dot si
  14 siblings, 0 replies; 16+ messages in thread
From: uros at kss-loka dot si @ 2005-03-11  9:49 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |20421
              nThis|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12308


^ permalink raw reply	[flat|nested] 16+ messages in thread
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-- links below jump to the message on this page --
2003-09-17  2:35 [Bug c/12308] New: '387 mode switching clobbers flags stuart at apple dot com
2003-09-17  7:17 ` [Bug target/12308] " pinskia at gcc dot gnu dot org
2003-10-05 17:18 ` pinskia at gcc dot gnu dot org
2003-10-05 17:28 ` pinskia at gcc dot gnu dot org
2003-10-17 18:20 ` pinskia at gcc dot gnu dot org
2003-10-20 23:54 ` stuart at apple dot com
2003-12-11 20:00 ` pinskia at gcc dot gnu dot org
2004-01-19 20:31 ` pinskia at gcc dot gnu dot org
2004-01-21  7:13 ` dhazeghi at yahoo dot com
2004-01-21 20:54 ` cvs-commit at gcc dot gnu dot org
2004-01-21 20:55 ` pinskia at gcc dot gnu dot org
2004-03-15  8:34 ` matt at use dot net
2004-03-15  8:42 ` matt at use dot net
2004-03-27 16:15 ` cvs-commit at gcc dot gnu dot org
2004-04-22 17:50 ` cvs-commit at gcc dot gnu dot org
2005-03-11  9:49 ` uros at kss-loka dot si

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