optimization/2100: -fstrength-reduce (is active with -O2) produces wrong code

[Franz Sirl]

On Tuesday 02 April 2002 13:24, Richard Henderson wrote:
> On Tue, Apr 02, 2002 at 01:07:58PM +0200, Franz Sirl wrote:
> > Is this really fixed now? See your comment in
> > <http://gcc.gnu.org/ml/gcc-patches/2001-11/msg02150.html>, that's the
> > reason I didn't close this one yet, though I should have added something
> > to the PR :-(.
>
> Hum.  Wish I'd seen that earlier.
>
> It might be fixed anyway -- there have been several fixes in
> this area over the last couple of months.  It'd be nice to
> back out Jan's cost tweek and see what happens under the hood.
>
> Do you have time to do that?

Bad news, after reverting Jan's cost tweek the bug reappeared on 
i686-linux-gnu :-(. Should I add the testcase to the testsuite in mainline 
and branch even though it won't currently fail?

Franz.