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From: grahamr@azure.UUCP (Graham Ross)
Newsgroups: net.arch,net.lang.c
Subject: Re: RISC perspective -- register variables
Message-ID: <2637@azure.UUCP>
Date: Fri, 30-Mar-84 01:27:48 EST
Article-I.D.: azure.2637
Posted: Fri Mar 30 01:27:48 1984
Date-Received: Sun, 25-Mar-84 19:11:22 EST
References: <936@hou5e.UUCP> <502@abnjh.UUCP>
Organization: Tektronix, Beaverton OR
Lines: 10

Rick Thomas is right about no aliases for a register variable.

I consider this a much more important result than the "fast"
idea.  The elimination of aliases is the only way to achieve
code hoisting, one of the nicest optimizations there is.  I
think the V6-V7 improvement of allowing more than 3 register
variables (how many of us remember that one?) was one of the
more insightful changes to C.  It showed a much keener awareness
of language concepts and a small but welcome departure from
implementation details.