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From: norman@oclsc.org (Norman Wilson)
To: tuhs@tuhs.org
Subject: Re: [TUHS] pcc in 8th edition
Date: Sun, 25 Apr 2021 18:02:26 -0400 (EDT)
Message-ID: <20210425220226.A7E5E640CB6@lignose.oclsc.org> (raw)

Dan Cross:

  I seem to recall that LCC was also used, at least on 10th Ed. Am I
  imagining things, or was that real?

===

Some of the earliest work on lcc was done in 1127; Chris
Fraser worked for the Labs for some years, Dave Hanson
collaborated from his appointment at Princeton.  I believe
there was a /usr/bin/lcc.  Some programs used it, either
because they needed some part of the ISO syntax (pcc2 was
pre-ISO) or just because.

I don't think that version of lcc used Reiser's c2 optimizer;
it generated reasonably good code by itself, including
emitting auto-increment/decrement instructions.  Later
versions of lcc (such as that I later adopted as cc in
my personal V10 world) couldn't do that any more, so I
had to keep c2, and in fact to modify it to turn
	addl3 a,b,(p)
	mova 4(p),p
into
	addl3 a,b,(p)+
(or maybe it was addl2 $4,p, I forget)

But that's another story which I'll tell only if asked,
and nothing to do with the original question.

             reply	other threads:[~2021-04-25 22:04 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-25 22:02 Norman Wilson [this message]
2021-04-26  0:18 ` Nemo Nusquam
2021-04-26 16:51 ` Adam Thornton
  -- strict thread matches above, loose matches on Subject: below --
2021-04-26 18:00 Norman Wilson
2021-04-26 18:11 ` Dan Cross
2021-04-25 20:48 Norman Wilson
2021-04-25 20:54 ` Dan Cross
2021-04-26  6:29 ` Noel Hunt
2021-04-25 12:35 Paul Ruizendaal
2021-04-25 12:49 ` arnold
2021-04-25 14:04   ` Paul Ruizendaal
2021-04-25 15:45   ` Paul Ruizendaal
2021-04-25 17:11     ` Clem Cole
2021-04-25 17:32       ` arnold
2021-04-25 17:46         ` Clem Cole
2021-04-25 20:11       ` Paul Ruizendaal
2021-04-30 23:08       ` Paul Ruizendaal
2021-04-25  9:15 Paul Ruizendaal via TUHS

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