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Re: more on fortran array indexing

To: Toon Moene <toon at moene dot indiv dot nluug dot nl>
Subject: Re: more on fortran array indexing
From: Richard Henderson <rth at cygnus dot com>
Date: Fri, 3 Oct 1997 11:04:25 -0700
Cc: Richard Henderson <rth at cygnus dot com>, egcs at cygnus dot com
References: <19971002130319.01737@dot.cygnus.com> <9710030816.AA26550@moene.indiv.nluug.nl>

> Please try the following patch:
> 
> 	* fold-const (fold): Also simplify FLOOR_DIV_EXPR
> 	  iff dividend is a multiple of divisor

No good.  The problem being, I believe, that n*64 is wrapped in a 
save_expr, and so we can't get rid of it.  I'd actually already 
tried making the ARRAY_REF expansion use EXACT_DIV_EXPR..


r~

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