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Commit 3e8af67a authored by Joey Thaman's avatar Joey Thaman Committed by Maksim Panchenko
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[BOLT] Optimize the three way branch 

Summary:
Three way branches commonly appear
in HHVM. They have one test and then two jumps.  The
jump's destinations are not currently optimized.
This pass attempts to optimize which is the first branch.

(cherry picked from FBD30460441)
parent c040431f
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