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Re: [PATCH] Improve MIN_EXPR/MAX_EXPR constant folding

From: Eric Botcazou <ebotcazou at adacore dot com>
To: Andrew Pinski <pinskia at physics dot uc dot edu>
Cc: gcc-patches at gcc dot gnu dot org
Date: Sat, 14 Jan 2006 17:38:55 +0100
Subject: Re: [PATCH] Improve MIN_EXPR/MAX_EXPR constant folding
References: <200601141201.42807.ebotcazou@adacore.com> <c96fa18df962644fed86511f0dc1e614@physics.uc.edu>

> I would add some C testcases.

Right, good idea.  I'm far too much focused on Ada these days. ;-)

Thanks for the testcases.

> This should simplify now as we get in fold "MIN_EXPR <MAX_EXPR <c, a>,
> c>;" and
> "MAX_EXPR <MIN_EXPR <c, a>, c>".  Oh, I see you are comparing only
> constants, I think that is wrong as shown by my example.

Well, not wrong, only on the cautious side.  But I agree that we can probably 
get rid of OEP_ONLY_CONST.

-- 
Eric Botcazou

References:
- [PATCH] Improve MIN_EXPR/MAX_EXPR constant folding
  - From: Eric Botcazou
- Re: [PATCH] Improve MIN_EXPR/MAX_EXPR constant folding
  - From: Andrew Pinski

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