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[smlnj] View of /sml/trunk/src/MLRISC/Doc/freq.html
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View of /sml/trunk/src/MLRISC/Doc/freq.html

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Revision 499 - (download) (as text) (annotate)
Tue Dec 7 15:44:50 1999 UTC (20 years, 3 months ago) by monnier
File size: 737 byte(s)
This commit was generated by cvs2svn to compensate for changes in r498,
which included commits to RCS files with non-trunk default branches.
   <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
   <META NAME="GENERATOR" CONTENT="Mozilla/4.07 [en] (X11; I; Linux 2.2.7 i686) [Netscape]">
<BODY bgcolor="#FFFFFF">

<FONT COLOR="#aa0000">Frequency Driven Compilation</FONT></H1></CENTER>

Most optimizations in MLRISC are now driven by execution frequencies
estimates provided by the front-end.  These can be in the form of explicit
vertex and edge frequencies, in the form of branch probabilities, or a
combination of the above.  Frequency information can be propagated
to the backend via the <a href="annotations.html"> annotations </a> mechanism. 



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