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The Go programming language
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1ccb66d1ef
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Brian Kessler 1ccb66d1ef hash/fnv: use bits.Mul64 for 128-bit hash 
Replace the 128-bit multiplication in 4 parts with bits.Mul64
and two single-width multiplications.  This simplifies the code
and increases throughput by ~50% on amd64.

name         old time/op   new time/op   delta
Fnv128KB-4    9.64µs ± 0%   6.09µs ± 0%  -36.89%  (p=0.016 n=4+5)
Fnv128aKB-4   9.11µs ± 0%   6.17µs ± 5%  -32.32%  (p=0.008 n=5+5)

name         old speed     new speed     delta
Fnv128KB-4   106MB/s ± 0%  168MB/s ± 0%  +58.44%  (p=0.016 n=4+5)
Fnv128aKB-4  112MB/s ± 0%  166MB/s ± 5%  +47.85%  (p=0.008 n=5+5)

Change-Id: Id752f2a20ea3de23a41e08db89eecf2bb60b7e6d
Reviewed-on: https://go-review.googlesource.com/c/133936
Run-TryBot: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2018-12-10 22:50:48 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api syscall: FreeBSD 12 ino64 support 2018-10-05 21:38:13 +00:00
doc doc/go1.12: release notes for math/bits 2018-12-07 21:53:15 +00:00
lib/time lib/time: update tzdata to 2018g 2018-11-28 08:22:56 +00:00
misc all: move cmd/internal/xcoff to internal/xcoff 2018-12-10 18:52:31 +00:00
src hash/fnv: use bits.Mul64 for 128-bit hash 2018-12-10 22:50:48 +00:00
test cmd/compile: check for negative upper bound to IsSliceInBounds 2018-12-07 23:04:58 +00:00
.gitattributes
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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