STL std::hash<T*> implementations have a tendency of just reinterpreting the
pointer as a size_t. This is fast, but produces a bad hash, as most pointers
tend to be 4 or 16 byte aligned. The lack of entropy in the LSBs causes
clustering of hashmap slots. Use tint::utils::Hasher to get better hashes.
Change-Id: Ife768d573cd1875e746ca9d77a4ac19e43b06aca
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99281
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
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