485a572243
We used to use SHA1 for content hashes, but CL 402595 changed all the “don't care” hashes to cmd/internal/notsha256 (negated SHA256). This made object files a little bit bigger: fmt.a on my Mac laptop grows from 910678 to 937612 bytes (+3%). To remove that growth, truncate the hash we use for these purposes to 128 bits (half a SHA256), and also use base64 instead of hex for encoding it when a string form is needed. This brings fmt.a down to 901706 bytes (-1% from original, -4% from current). Change-Id: Id81da1cf3ee85ed130b3cda73aa697d8c0053a62 Reviewed-on: https://go-review.googlesource.com/c/go/+/404294 Auto-Submit: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> |
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