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Commit b7151c7c authored by Ted Kremenek's avatar Ted Kremenek
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LiveVariables analysis now uses intersect for the merge of block-level... 

LiveVariables analysis now uses intersect for the merge of block-level expression liveness information.
The rationale is that a block-level expression cannot be live in a parent block unless it is live in all of the successor blocks.

llvm-svn: 48618
parent 5ca2ea64
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