4f217d5aaa
For symbols of size 8 bytes or below, we can map them to 64-bit hash values using the identity function. There is no need to use longer and more expensive hash functions. For them, we introduce another pseudo-package, PkgIdxHashed64. It is like PkgIdxHashed except that the hash function is different. Note that the hash value is not affected with trailing zeros, e.g. "A" and "A\0\0\0" have the same hash value. This allows deduplicating a few more symbols. When deduplicating them, we need to keep the longer one. Change-Id: Iad0c2e9e569b6a59ca6a121fb8c8f0c018c6da03 Reviewed-on: https://go-review.googlesource.com/c/go/+/242362 Reviewed-by: Jeremy Faller <jeremy@golang.org> |
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