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Normalize MBB's successors' probabilities in several locations.
This patch adds some missing calls to MBB::normalizeSuccProbs() in several locations where it should be called. Those places are found by checking if the sum of successors' probabilities is approximate one in MachineBlockPlacement pass with some instrumented code (not in this patch). Differential revision: http://reviews.llvm.org/D15259 llvm-svn: 255455
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Cong Hou
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Dec 13, 2015
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