diagnostics that occur in unreachable code (e.g., -Warray-bound).
We only pay the cost of doing the reachability analysis when we issue one of these diagnostics.
llvm-svn: 126290
especially C++ code, and generally expand the test coverage.
Logic adapted from a patch by Kaelyn Uhrain <rikka@google.com> and
another Googler.
llvm-svn: 125775
Ted Kremenek