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Re: CCP propagating conditional expression constants

From: Gabriel Dos Reis <gdr at integrable-solutions dot net>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: Sebastian Pop <sebastian dot pop at inria dot fr>, gcc-patches at gcc dot gnu dot org, Diego Novillo <dnovillo at redhat dot com>
Date: 05 Jan 2007 21:30:49 +0100
Subject: Re: CCP propagating conditional expression constants
References: <cb9d34b20701050333v731aaf38gc05eec278c90aa1f@mail.gmail.com> <459EAD9C.3050106@codesourcery.com>

Mark Mitchell <mark@codesourcery.com> writes:

| Sebastian Pop wrote:
| 
| > if (x == 0)
| >  a = b / x;
| 
| If we end up warning about this from the optimizers (and, at this point,
| we all know that's not my favorite idea), then I think we should avoid
| warning about:
| 
|   if (x == 0 && false)
|     a = b / x;

I really favor the idea of stopping warning from the optimizers.
However, I don't know yet (and I have not seen) an alternative that
would be better than current situation.  Do you have something
specific in ming for replacements?

-- Gaby

Follow-Ups:
- Re: CCP propagating conditional expression constants
  - From: Mark Mitchell

References:
- CCP propagating conditional expression constants
  - From: Sebastian Pop
- Re: CCP propagating conditional expression constants
  - From: Mark Mitchell

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