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Re: optimization/6822: GCC 3.1.1 - Internal compiler error in extract_insn, at recog.c:2132
- From: Glen Nakamura <glen at imodulo dot com>
- To: Richard Henderson <rth at redhat dot com>,Eric Botcazou <ebotcazou at libertysurf dot fr>, gcc-gnats at gcc dot gnu dot org,gcc-bugs at gcc dot gnu dot org
- Date: Sun, 2 Jun 2002 10:02:44 -1000
- Subject: Re: optimization/6822: GCC 3.1.1 - Internal compiler error in extract_insn, at recog.c:2132
- References: <20020528035454.A6106@modulo.internal.net> <20020528105315.A3113@redhat.com> <00ad01c206a1$7937da40$1f0e81d4@zephyr> <20020528173301.A6889@modulo.internal.net> <20020602122726.C12875@redhat.com>
On Sun, Jun 02, 2002 at 12:27:26PM -0700, Richard Henderson wrote:
> On Tue, May 28, 2002 at 05:33:01PM -1000, Glen Nakamura wrote:
> > * fold-const.c (fold): Modify the transformation of a comparison
> > against the highest or lowest integer value to adjust for the
> > previous transformation which converts 'X >= CST to X > (CST - 1)'
> > and 'X < CST to X <= (CST - 1)'.
>
> Would you update this for mainline? I believe we fixed the
> regression for the branch another way, but if there are
> valid simplifications we're missing...
>
Okay, I'll do that... As you pointed out earlier, PR6822 was really a
different problem. I'll update the patch for the mainline and open a new
PR to track the discussion. Then, you can decide if it's worth it for
the branch or not.
- Glen Nakamura