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   6 <TITLE>The SUIF Version 1 Library - Input Annotes</TITLE>
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  17 <H3><A NAME="SEC82" HREF="suif1_toc.html#TOC82">Unregistered Annotations in the Input File</A></H3>
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  20 When an unregistered annotation is read from a SUIF input file, it is
  21 automatically registered as a flat annotation.  This is done so that the
  22 manager knows to write the annotation back in the output.
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  26 Annotations are often added to a SUIF file in one pass to record some
  27 sort of information, perhaps the results of a data flow analysis.  Those
  28 annotations may then used in later passes to guide various
  29 transformations.  Even if intervening passes do not recognize the
  30 annotations, they will still be propagated to the output.  (It is up to
  31 the user, of course, to make sure that the intervening passes do not
  32 invalidate the information in the annotations without updating them.)
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