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Mapping back to original variables after SSA optimizations
- From: "Fran Baena" <franbaena at gmail dot com>
- To: gcc at gcc dot gnu dot org
- Date: Thu, 10 Apr 2008 14:16:06 +0200
- Subject: Mapping back to original variables after SSA optimizations
Hi all,
i have a doubt about unSSA: is it allways possible to map back the
versioned variables to the original variable? If it could be possible,
is there an algorithm that describe this translation back?
I have read the paper "Efficiently computing static single assignment
form and the control dependence graph (cytron91)" and no way to
translate back from SSA is explained, it only points out that after
SSA optimizations "dead code elminitation" and "allocation by
colloring" are recommended to be performed.
Thanks
Fran