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From: Luke A. Guest <laguest@archeia.com>
Newsgroups: comp.lang.ada
Subject: Re: Why are Ada compilers difficult to write ?
Date: Sat, 23 Jun 2018 02:49:35 +0100
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Date: 2018-06-23T02:49:35+01:00
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Dan'l Miller <optikos@verizon.net> wrote:

>> The ports are in various states of broken-ness as well. None are up to
>> date, all are partially done. Believe me I’ve looked.
> 
> I can understand phasing Alpha and VAX and National Semiconductor 32032
> ISAs out of modern GCC because each is no longer manufactured, but I
> think that every compiler should support every processor on the planet
> that is manufactured •today•.
> 

But Z80 was never officially ported to GCC, there have been attempts which
seemed to die because of the severe lack of registers, iirc. Also Z80
doesn’t have zero page tricks like the 6502.

I’ve read that the current LRA (I think it’s called) register scheduler
would be better for these kinds of CPU’s.