× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. MI400
  3. July 2002

Re: optimizing MI code

Steve Richter wrote:
...
Also, is w-code more optimizable than MI code, and if so, why ?

W-Code is MUCH more optimizable, for at least two key reasons. First, it's
expression-based instead of storage-based. That is, results are viewed as
being returned to a logical (not necessarily physical) stack, not to the
storage location specified as an operand on the instruction. Secondly, the
exception handling semantics are very different. One example: in W-Code
there is no concept of handling an exception by transferring control to the
"next" MI (or W-Code) instruction. That ability in the original MI severely
inhibits optimization because in some respects every instruction becomes a
potential control flow target.

Paul Godtland

As an Amazon Associate we earn from qualifying purchases.

This thread ...
Follow-Ups:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.