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class 3 edges

From: "Sunzir Deepur" <sunzird at gmail dot com>
To: gcc at gcc dot gnu dot org
Date: Wed, 20 Jun 2007 00:01:43 +0300
Subject: class 3 edges

hello,

when I compile with -dv -fdump-rtl-* I somtimes see in the VCG files
some edges that have no meaning in the flow of the program.
these edges are always green and class 3.

what are those edges ? what is their purposes ?

thank you
sunzir

Follow-Ups:
- Re: class 3 edges
  - From: Seongbae Park (박성배, 朴成培)

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