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From: Janis Johnson <janis187@us.ibm.com>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: Re: optimization/10877: [3.3/3.4 regression] miscompilation with -O3  -fPIC on x86
Date: Tue, 20 May 2003 22:46:00 -0000	[thread overview]
Message-ID: <20030520224601.27396.qmail@sources.redhat.com> (raw)

The following reply was made to PR optimization/10877; it has been noted by GNATS.

From: Janis Johnson <janis187@us.ibm.com>
To: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org,
   lloyd@acm.jhu.edu, nobody@gcc.gnu.org, ebotcazou@libertysurf.fr
Cc:  
Subject: Re: optimization/10877: [3.3/3.4 regression] miscompilation with -O3 
 -fPIC on x86
Date: Tue, 20 May 2003 15:32:32 -0700

 The pc_thunk started going into %eax with this patch:
 
 > 2003-03-12  Eric Botcazou  <ebotcazou@libertysurf.fr>
 >
 >       PR optimization/9888
 >       * config/i386/i386.md (jcc_1): Fix range.
 >       (jcc_2): Likewise.
 >       (jump): LIkewise.
 >       (doloop_end_internal): Likewise.
 >
 > 2003-03-12  Eric Botcazou  <ebotcazou@libertysurf.fr>
 >
 >       PR optimization/9888
 >       * config/i386/i386.md (movsi_1): Remove special alternatives
 >       for %eax register.
 >       (movsi_1_nointernunit): Likewise.
 >       (movhi_1): Likewise.
 >       * config/i386/i386.c (memory_address_length): Do not use
 >       short displacement when there is no base.
 >       (ix86_attr_length_address_default): Handle LEA instructions.
 
 This was tested using Wolfgang's smaller testcase and
 searching for '_GLOBAL_OFFSET_TABLE_, %eax' in the .s file.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10877
 
 
 


             reply	other threads:[~2003-05-20 22:46 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-20 22:46 Janis Johnson [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-05-21 12:46 Christian Ehrhardt
2003-05-21 11:28 Christian Ehrhardt
2003-05-21  8:46 Christian Ehrhardt
2003-05-20 19:36 Andrew Pinski
2003-05-20 19:27 Andrew Pinski
2003-05-20 19:16 Wolfgang Bangerth
2003-05-20 17:16 Andrew Pinski
2003-05-20 17:06 Christian Ehrhardt
2003-05-20 17:06 Wolfgang Bangerth
2003-05-20 16:16 Wolfgang Bangerth
2003-05-20 13:56 Wolfgang Bangerth
2003-05-20  2:06 Andrew Pinski
2003-05-20  1:16 bangerth

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