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Author SHA1 Message Date
DeLesley Hutchins e8d2a9d755 Thread Safety Analysis: Move -Wthread-safety-negative out of the 
-Wthread-safety umbrella flag, pending updates to documentation.  The flag
works, but is likely to be confusing to existing users of -Wthread-safety.

llvm-svn: 215679
 2014-08-14 21:54:34 +00:00
DeLesley Hutchins 3efd0495a0 Thread Safety Analysis: add a -Wthread-safety-negative flag that warns whenever 
a mutex is acquired, but corresponding mutex is not provably not-held.  This
is based on the earlier negative requirements patch.

llvm-svn: 214789
 2014-08-04 22:13:06 +00:00