Path: utzoo!attcan!uunet!lll-winken!ames!mailrus!csd4.milw.wisc.edu!bbn!rochester!pt.cs.cmu.edu!cadre!pitt!whit
From: whit@pitt.UUCP (Debbie Whitfield)
Newsgroups: comp.lang.fortran
Subject: IDENTIFY statement in Fortran 8x
Message-ID: <4462@pitt.UUCP>
Date: 17 Jan 89 12:40:34 GMT
Organization: Computer Science Dept., Univ. of Pittsburgh
Lines: 27


    As I was reading the ACM TOPLAS, Oct. 1987, article written by
Randy Allen and Ken Kennedy (Automatic Translation of FORTRAN Programs
to Vector Form), I ran across the IDENTIFY construct.  Their example
is:

       IDENTIFY /1:M/ D(I) = C(I,I+1)

which is a pseudonym for the diagonal of an array. I am curious about
what is considered as a valid expression for describing elements of C.  
Can any expression be used?  What about function calls?

How would this be implemented?  Does the expression have to be
computable at compile time or run time?

     This is the only example of the IDENTIFY statement I've seen.
I'd appreciate other examples and any answers to the questions I've
posed above.

Debbie Whitfield

--------------------------------------------------------------------------
Debbie Whitfield	UUCP:      psuvax1!pitt!whit or {allegra,cadre}!...
Univ. of Pittsburgh		   whit@pitt.uucp
Computer Science Dept.	Internet:  whit@vax.cs.pittsburgh.edu
313 M.I.B.		CSNET:     whit@pitt.csnet
Pittsburgh, PA 15260