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| author | Keith Randall <khr@golang.org> | 2023-08-17 14:20:21 -0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-08-23 00:30:54 +0000 |
| commit | 47112996619da0683eb15e611a1e2df85416feee (patch) | |
| tree | faba836b45c89df8eb42a3269acda1f92ffb447c /src/encoding/json/encode.go | |
| parent | 556e9c5f3e28d0398001384508a3c51143adcff8 (diff) | |
| download | go-47112996619da0683eb15e611a1e2df85416feee.tar.xz | |
cmd/compile: use jump tables for large type switches
For large interface -> concrete type switches, we can use a jump
table on some bits of the type hash instead of a binary search on
the type hash.
name old time/op new time/op delta
SwitchTypePredictable-24 1.99ns ± 2% 1.78ns ± 5% -10.87% (p=0.000 n=10+10)
SwitchTypeUnpredictable-24 11.0ns ± 1% 9.1ns ± 2% -17.55% (p=0.000 n=7+9)
Change-Id: Ida4768e5d62c3ce1c2701288b72664aaa9e64259
Reviewed-on: https://go-review.googlesource.com/c/go/+/521497
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Diffstat (limited to 'src/encoding/json/encode.go')
0 files changed, 0 insertions, 0 deletions