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From: Nemo Nusquam <cym224@gmail.com>
To: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] pcc in 8th edition
Date: Sun, 25 Apr 2021 20:18:29 -0400
Message-ID: <eb620bbd-1f21-7fae-7236-02f2ee50c7ec@gmail.com> (raw)
In-Reply-To: <20210425220226.A7E5E640CB6@lignose.oclsc.org>

On 2021-04-25 18:02, Norman Wilson wrote (in part):
> 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.
Please consider yourself asked. #6-)

N.

  reply	other threads:[~2021-04-26  0:19 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-25 22:02 Norman Wilson
2021-04-26  0:18 ` Nemo Nusquam [this message]
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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