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Commit 54e02194 authored by Owen Anderson's avatar Owen Anderson
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Tighten the conditions under which we do PRE, remove some unneeded code, and... 

Tighten the conditions under which we do PRE, remove some unneeded code, and correct our preserved analyses list, since we
do now change the CFG by splitting critical edges during PRE.

llvm-svn: 52631
parent 4d754bc9
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