[Sanitizer] one more fix for signed/unsigned mismatch in comparison

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176020 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] use the new attribute syntax (no_address_safety_analysis => no_sanitize_address)

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176077 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] fix the output for range accesses (memset, etc); improve the tests; more strict checking in memcmp

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176078 91177308-0d34-0410-b5e6-96231b3b80d8
[tsan] enable tsan-vs-gvn test since it is now fixed

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176079 91177308-0d34-0410-b5e6-96231b3b80d8