Chandler Carruth 941aa7b1e8 Generalize the reading of probability metadata to work for both branches ...

and switches, with arbitrary numbers of successors. Still optimized for
the common case of 2 successors for a conditional branch.

Add a test case for switch metadata showing up in the BlockFrequencyInfo pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142493 91177308-0d34-0410-b5e6-96231b3b80d8

2011-10-19 10:32:19 +00:00

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