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Commit a8287e33 authored by ram's avatar ram
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Changed alias and environment TN stuff to work with TNs that have no

references.  (We don't delete these TNs before lifetime analysis, since
because of alias TNs, TNs might appear to have no refs when they really
do.)
Also, changed debug-environment TN stuff to be more correct.  We set up
the conflicts before flow analysis, (just like for environment TNs) so that
environment TNs are considered always-live in blocks that they actually
die in when the block has successors.
parent 95d57cc7
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