It is expected that many classes will use MemorySegments to back internal states. MemorySegment already has a method `long
mismatch(MemorySegment other)` that can be used to determine content equality for MemorySegments and thus provides a useful feature when implementing `Object:equals` methods.

It is hereby proposed to introduce a new JDK-internal method `int contentHash(MemorySegment segment, long from, long to)` that computes a hash value for the provided range.

An opportunity is to use vectorized operations to improve performance.