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* [Bug middle-end/16968] New: RTX_UNCHANGING_P related miscompilation
@ 2004-08-10 15:43 jakub at gcc dot gnu dot org
  2004-08-10 15:44 ` [Bug middle-end/16968] " jakub at gcc dot gnu dot org
                   ` (17 more replies)
  0 siblings, 18 replies; 19+ messages in thread
From: jakub at gcc dot gnu dot org @ 2004-08-10 15:43 UTC (permalink / raw)
  To: gcc-bugs

On ppc (and ppc64 -m32) following testcase is miscompiled with -O2
in at least 3.4.2 20040810 (prerelease) and 3.4.1 20040714 (Red Hat 3.4.1-7).

In RTL dumps the problem is immediately obvious, t initialization is done with
MEM/s (note missing /u), while later on reads from it are MEM/s/u.

-- 
           Summary: RTX_UNCHANGING_P related miscompilation
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16968


^ permalink raw reply	[flat|nested] 19+ messages in thread
end of thread, other threads:[~2004-12-18  8:00 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-08-10 15:43 [Bug middle-end/16968] New: RTX_UNCHANGING_P related miscompilation jakub at gcc dot gnu dot org
2004-08-10 15:44 ` [Bug middle-end/16968] " jakub at gcc dot gnu dot org
2004-08-10 15:45 ` [Bug rtl-optimization/16968] " pinskia at gcc dot gnu dot org
2004-08-10 15:45 ` pinskia at gcc dot gnu dot org
2004-08-10 15:46 ` jakub at gcc dot gnu dot org
2004-08-10 15:48 ` jakub at gcc dot gnu dot org
2004-08-10 16:02 ` jakub at gcc dot gnu dot org
2004-08-11 16:13 ` [Bug rtl-optimization/16968] [3.4 only] " pinskia at gcc dot gnu dot org
2004-08-16 10:24 ` [Bug rtl-optimization/16968] [3.4 Regression] loop optimizer miscompilation giovannibajo at libero dot it
2004-08-16 10:31 ` jakub at gcc dot gnu dot org
2004-08-29 19:02 ` mmitchel at gcc dot gnu dot org
2004-10-22 17:38 ` pinskia at gcc dot gnu dot org
2004-11-01  0:47 ` mmitchel at gcc dot gnu dot org
2004-12-10 10:29 ` ebotcazou at gcc dot gnu dot org
2004-12-13 11:02 ` ebotcazou at gcc dot gnu dot org
2004-12-17 17:11 ` ebotcazou at gcc dot gnu dot org
2004-12-18  7:55 ` cvs-commit at gcc dot gnu dot org
2004-12-18  7:58 ` cvs-commit at gcc dot gnu dot org
2004-12-18  8:00 ` ebotcazou at gcc dot gnu dot org

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