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Michael Pratt d51f92e737 internal/runtime/maps: optimize small map lookups with int keys
Load the field we need from the type once outside the search loop.
Get rid of the multiply to compute the slot position. Instead compute
the slot position incrementally using addition.
Move the hashing later in access2.

Based on khr@'s CL 618959.

For #54766.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-swissmap
Change-Id: Id11b5479fa5bc0130a1d8d9e664d0206d24942ea
Reviewed-on: https://go-review.googlesource.com/c/go/+/620217
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
2024-10-30 15:31:50 +00:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api hash/maphash: add WriteComparable and Comparable 2024-10-02 15:54:11 +00:00
doc Revert "crypto/rand: add randcrash=0 GODEBUG" 2024-10-28 14:46:33 +00:00
lib lib/time: update to 2024b/2024b 2024-09-23 14:25:08 +00:00
misc misc/wasm: move wasm runtime files to lib/wasm 2024-08-30 19:15:21 +00:00
src internal/runtime/maps: optimize small map lookups with int keys 2024-10-30 15:31:50 +00:00
test runtime,internal/runtime/maps: specialized swissmaps 2024-10-30 15:14:31 +00:00
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.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
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LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
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README.md

The Go Programming Language

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