David Blaikie 74c45a19e3 Remove some unnecessary unreachables in favor of (sometimes implicit) assertions
Also simplify some else-after-return cases including some standard
algorithm convenience/use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230094 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-20 23:44:24 +00:00
..
2015-01-24 17:51:26 +00:00
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