From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jim Wilson <wilson@cygnus.com>
To: law@cygnus.com
Cc: Kamil Iskra <kamil@dwd.interkom.pl>, egcs@cygnus.com
Subject: Re: Loop optimizer misses simple optimisation? 
Date: Sun, 03 May 1998 15:32:00 -0000
Message-id: <199805032232.PAA08246@rtl.cygnus.com>
References: <19466.894225692@hurl.cygnus.com>
X-SW-Source: 1998-05/msg00060.html

	However, a div or mod operation can not generally be moved out of
	a loop unless you know it won't trap (divide by zero).

If an instruction might trap, then it will be moved out of a loop if we
can prove that it will be executed at least once.

Jim