691b7ff1c7
Previously, the implementation used bit manipulation to approximate
counters to the nearest power of two.
Given the 0-255 range of byte, we can precompute values at
initialization and use a lookup table, reducing runtime computation.
Benchmarks show an 18% performance gain on AMD64 and 5% on ARM64.
* net/netip/FuzzParse (n=10, t=60s, state reset per run)
* AMD64 (Intel Alder Lake i5-12600k):
17,349,217 -> 20,487,756 execs/s
* ARM64 (M3 Pro):
19,606,471 -> 20,657,041 execs/s
* compress/gzip/FuzzReader (n=10, t=60s, mature corpus)
* AMD64 (Intel Alder Lake i5-12600k):
5,655,956 -> 6,707,035 execs/s
Change-Id: If11f7fe866f54c7cd2c5a48e251c027b67980df7
Reviewed-on: https://go-review.googlesource.com/c/go/+/627378
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
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| LICENSE | ||
| PATENTS | ||
| README.md | ||
| SECURITY.md | ||
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README.md
The Go Programming Language
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