The other 3 sanitizers (ASAN, TSAN and MSAN) all use
maybeMarkSanitizerLibraryCallNoBuiltin to make disable optimizations
which inline functions like memcmp for example. The lack of this
optimization was allowing ExpandMemCmpPass to convert a memcmp call to
inlined assembly and cause a false negative in HWASAN.
The plan is to fix memcmp interceptor in HWASAN and remove the
unsupported statement at that time.
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Co-authored-by: Vitaly Buka <vitalybuka@gmail.com>
