Re: x86 code generation

Juergen Kahrs <>
20 Jun 2000 02:32:06 -0400

          From comp.compilers

Related articles
x86 code generation (Nick Shaffner) (2000-06-14)
Re: x86 code generation (2000-06-20)
Re: x86 code generation (Juergen Kahrs) (2000-06-20)
Re: x86 code generation (2000-06-20)
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From: Juergen Kahrs <>
Newsgroups: comp.compilers
Date: 20 Jun 2000 02:32:06 -0400
Organization: STN Atlas Elektronik GmbH SLE1
References: 00-06-057
Keywords: 386, code

Nick Shaffner wrote:

> I am interested x86 specific code generation, including
> intermediete representations that are friendly to the architecture,
> strategies for managing the floating point stack, dealing with the
> lack of registers - but making use of register renaming, etc.

The code generator of the LCC compiler may be just another general
purpose code generator and therefore not so interesting for you. But
the book has separate chapters for each code generator and the x86 is
one of them:

> [I've seen thick manuals from Intel full of advice on x86 code
> generation. You can probably find PDFs on their developer web
> site. -John]

Yes, you are right, John. These links are just starting point:

Currently, it looks like 3DNow! is an interesting instruction set
extension. 3DNow allows for executing 4 single precision floats with
one instruction. It is supported by AMD and Cyrix/VIA.

BTW: The architectures of the new Intel processors (IA64 and
Willamette) are so extremely dependent on well designed/adapted code
generators that (good) compiler writers should face a "bright
future". Furthermore, the Alpha architecture and some IBM POWER
processors go into hardware supported multithreading, which also needs
support by compiler designers.
| Juergen Kahrs, STN Atlas Elektronik GmbH, D-28305 Bremen |
| Simulation Division Sebaldsbruecker Heerstr. 235 +49/421/457-2819 |
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