Re: Vector assignment semantics (was Re: latest trends in compiler optimization research?)

Peter Flass <Peter_Flass@Yahoo.com>
Wed, 15 Aug 2007 18:00:05 -0400

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From: Peter Flass <Peter_Flass@Yahoo.com>
Newsgroups: comp.compilers,comp.lang.pl1
Date: Wed, 15 Aug 2007 18:00:05 -0400
Organization: Road Runner High Speed Online http://www.rr.com
References: 07-08-01607-08-021 07-08-024 07-08-034 07-08-037 07-08-040
Keywords: parallel, PL/I
Posted-Date: 15 Aug 2007 22:52:17 EDT

> http://publibfp.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/ibmol004/3.1.4.2.1
>
> It seems that IBM doesn't follow the ANSI-1976 standard, and this is
> one more example. (The manual is copyright 1964, 1990, and I believe
> applies to current IBM compilers.)
>
> In most other cases, PL/I does support what I would have called
> "naturalness" at the expense of space and/or time. This may have been
> more "natural" to programmers used to using DO loops for array
> assignment.
>
> I have added comp.lang.pl1. Implementors of other PL/I compilers
> might comment on their support of array expressions.


None yet, but many thanks for the "heads up." I'm not sure I
understand serial vs. parallel, but if I do understand I wa going to
do parallel, and create an array temporary to hold the result of the
expression. Now I don't know what I'll do.

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