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From: lupine!rfg@uunet.UU.NET (Ron Guilmette)
Newsgroups: comp.compilers
Subject: Re: Stack formats and Code folding from JSR/RTS -> {Local}
Keywords: optimize, architecture
Message-ID: <5425@lupine.NCD.COM>
Date: 7 May 91 06:28:42 GMT
References: <9104262025.AA21840@enuxva.eas.asu.edu> <7524@ecs.soton.ac.uk>
	<1991May1.035622.25021@daffy.cs.wisc.edu>
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Reply-To: lupine!rfg@uunet.UU.NET (Ron Guilmette)
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In article <1991May1.035622.25021@daffy.cs.wisc.edu> carter@cs.wisc.edu (Gregory Carter) writes:
>Hello...
>
>I don't know if this is incredibly obvious or what, but in the OLDEN DAYS
>when I was working on a 6502 machine.  Speed was of the upmost...ad nauseum..
>
>What I want to know, if any of you have considered, for high speed applications
>to get that extra push, what the problems would be in compiler design to:
>
>1) Transcribe all local variables to global ones.

For certain machines which do not efficiently support stacks, it may be
useful (for C and C++) to declare formal parameter variables as storage
class `static'.  There's only one problem.  Neither C nor C++ allow
formal parameters to be declared `static'.  (Note however that C and C++
allow formal parameters to be declared as `register'.)

I have recently noted this apparent language shortcomming the x3j16 (the
ANSI C++ Standardization Committee), however there seems to be little (if
any) interest in adding such a feature to C++.
-- 

// Ron ("Loose Cannon") Guilmette
// Internet: rfg@ncd.com      uucp: ...uunet!lupine!rfg
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