From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joern Rennecke <amylaar@cygnus.co.uk>
To: jvickers@acorn.com (John Vickers)
Cc: egcs@cygnus.com
Subject: Re: Was: Re: Loop optimizer misses simple optimisation?
Date: Wed, 06 May 1998 11:36:00 -0000
Message-id: <199805061729.SAA25923@phal.cygnus.co.uk>
References: <Marcel-1.26-0506144150-345LJLo@ether120.acorn.co.uk>
X-SW-Source: 1998-05/msg00201.html

> int a, b, c, d;
> ...
>   c = b / c;
>   d = b % c;
>   
> becomes:
> 
>   c = a / b;
>   d = a - c * b;  

This would have to depend on the cost of the modulo operation - and if b
is constant or can be made constant by constant-propagation, this also
ight make a difference to the cost.