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

"John W. Kennedy" <jwkenne@attglobal.net>
Wed, 15 Aug 2007 22:32:08 -0400

          From comp.compilers
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From: "John W. Kennedy" <jwkenne@attglobal.net>
Newsgroups: comp.compilers,comp.lang.pl1
Date: Wed, 15 Aug 2007 22:32:08 -0400
Organization: Optimum Online
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 22:52:43 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.)


Actually, that manual is ancient, applying to the 1990 release of a
compiler that first shipped around 1970, and which was superseded by
an entirely new compiler several years ago. However, the new compiler
seems to use the same semantics.


Until that new compiler, IBM pretty much entirely ignored ANSI PL/I,
which is semantically very incompatible with IBM's original definition
of the language.


--
John W. Kennedy
"The grand art mastered the thudding hammer of Thor
And the heart of our lord Taliessin determined the war."
      -- Charles Williams. "Mount Badon"

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