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Commit 5533ec5c authored by DeLesley Hutchins's avatar DeLesley Hutchins
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Consumed analysis: improve handling of conditionals. 

Patch by chris.wailes@gmail.com.

* The TestedVarsVisitor was folded into the ConsumedStmtVisitor.
* The VarTestResult class was updated to allow these changes.
* The PropagationInfo class was updated for the same reasons.
* Correctly handle short-circuiting of Boolean operations.
* Blocks are now marked as unreachable when we can statically prove we will
  never branch to them.
* Unreachable blocks are skipped by the analysis.

llvm-svn: 189594
parent f5d4535a
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