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Re: [testcase] optimization/5076: gcc3 regression: yet another strength reduction bug
- From: law at redhat dot com
- To: Franz Sirl <Franz dot Sirl-kernel at lauterbach dot com>
- Cc: Gwenole Beauchesne <gbeauchesne at mandrakesoft dot com>, nobody at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org, clm at redhat dot com
- Date: Wed, 09 Jan 2002 16:22:45 -0700
- Subject: Re: [testcase] optimization/5076: gcc3 regression: yet another strength reduction bug
- Reply-to: law at redhat dot com
> On Wednesday 02 January 2002 20:31, Gwenole Beauchesne wrote:
> > On 11 Dec 2001 gbeauchesne@mandrakesoft.com wrote:
> > > The attached test case is extracted/reduced from PR 2847 that was
> > > closed earlier. gcc3 series compilers are affected, unlike gcc-2.95.X.
> > > (gcc-"2.96" is affected too).
> >
> > Here is another testcase exhibing a strength reduction bug occurring with
> > FSF gcc 3.0.3 and binutils 2.11.92.0.12-2mdk (based on RH 2.11.92.0.12-8)
> > on i586-mandrake-linux-gnu. Also occurs with gcc 3.0.3 on IA-64 and with
> > mainline gcc (3.1 20020102) on IA-32. This is a regression from gcc
> > 2.95.X.
> >
> > Testcase is derived from PR optimization/5076 and PR optimization/2847.
> >
> > 2002-01-02 Gwenole Beauchesne <gbeauchesne@mandrakesoft.com>
> >
> > PR optimization/5076, PR optimization/2847
> > * gcc.c-torture/execute/loop-10.c: New test.
I went ahead and checked in this testcase.
jeff