Benjamin Kramer 0638353f56 Implement comparison operators for BranchProbability in a way that can't overflow INT64_MAX.
Add a test case for the edge case that triggers this. Thanks to Chandler for bringing this to my attention.

llvm-svn: 142794
2011-10-24 13:50:56 +00:00
..
2010-11-29 18:16:10 +00:00