Re: Modern compilers for ye olde architectures

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From	Philipp Klaus Krause <pkk@spth.de>
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Subject	Re: Modern compilers for ye olde architectures
Date	Wed, 6 Oct 2021 18:20:34 +0200
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Am 06.10.21 um 09:56 schrieb Anton Ertl:
> So eventually computer architects introduced machines with
> general-purpose registers like the PDP-11, the VAX, and the RISCs; and
> compiler writers developed techniques like graph colouring to make
> good use of these architectures.
>
> Maybe with the increased memory and processing power available now,
> one could do better, but given that special-purpose registers are
> mostly a thing of the past, there has not been much research into
> that, that I am aware of.

See "Optimal Register Allocation in Polynomial Time". A graph-coloring
approach that can handle irregularities well (as long as there are not
too many registers). SDCC uses such a register allocator for some
backends, including z80.

Philipp

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Modern compilers for ye olde architectures "Luke A. Guest" <laguest@archeia.com> - 2021-10-05 13:22 +0100
  Re: Modern compilers for ye olde architectures David Brown <david.brown@hesbynett.no> - 2021-10-05 19:59 +0200
  Re: Modern compilers for ye olde architectures Hans-Peter Diettrich <DrDiettrich1@netscape.net> - 2021-10-05 22:12 +0200
  Re: Modern compilers for ye olde architectures Derek Jones <derek@NOSPAM-knosof.co.uk> - 2021-10-06 01:26 +0100
    Re: Modern compilers for ye olde architectures "Luke A. Guest" <laguest@archeia.com> - 2021-10-06 09:00 +0100
  Re: Modern compilers for ye olde architectures anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2021-10-06 07:56 +0000
    Re: Modern compilers for ye olde architectures Philipp Klaus Krause <pkk@spth.de> - 2021-10-06 18:20 +0200
      Re: Modern compilers for ye olde architectures anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2021-10-15 07:37 +0000
        Re: Modern compilers for ye olde architectures Philipp Klaus Krause <pkk@spth.de> - 2021-10-18 08:35 +0200
        Re: Modern compilers for ye olde architectures Philipp Klaus Krause <pkk@spth.de> - 2021-10-18 08:56 +0200
        Re: Modern compilers for ye olde architectures Philipp Klaus Krause <pkk@spth.de> - 2021-10-18 09:17 +0200
          Re: Modern compilers for ye olde architectures gah4 <gah4@u.washington.edu> - 2021-10-21 21:53 -0700
            Re: Modern compilers for ye olde architectures Kaz Kylheku <480-992-1380@kylheku.com> - 2021-10-22 17:28 +0000
    Re: Modern compilers for ye olde architectures dave_thompson_2@comcast.net - 2021-11-14 15:04 -0500
  Re: Modern compilers for ye olde architectures Theo <theom+news@chiark.greenend.org.uk> - 2021-10-06 10:36 +0100
    Re: Modern compilers for ye olde architectures "Luke A. Guest" <laguest@archeia.com> - 2021-10-06 16:20 +0100

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