[tsan/msan] adding thread_safety and uninitialized_checks attributes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174864 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -444,7 +444,7 @@ static void decodeLLVMAttributesForBitcode(AttrBuilder &B,
 
   if (Alignment)
     B.addAlignmentAttr(Alignment);
-  B.addRawValue(((EncodedAttrs & (0xffffULL << 32)) >> 11) |
+  B.addRawValue(((EncodedAttrs & (0xfffffULL << 32)) >> 11) |
                 (EncodedAttrs & 0xffff));
 }