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| author | Cherry Mui <cherryyz@google.com> | 2022-04-25 17:18:19 -0400 |
|---|---|---|
| committer | Cherry Mui <cherryyz@google.com> | 2022-05-13 19:51:03 +0000 |
| commit | 540f8c2b50f5def060244853673ccfc94d2d3e43 (patch) | |
| tree | 0531fd6dca6c187b190c8e81c7db1b4b3449377b /test/codegen | |
| parent | ba8310cf29ee78576a3da8a3ce8e87075df834df (diff) | |
| download | go-540f8c2b50f5def060244853673ccfc94d2d3e43.tar.xz | |
cmd/compile: use jump table on ARM64
Following CL 357330, use jump tables on ARM64.
name old time/op new time/op delta
Switch8Predictable-4 3.41ns ± 0% 3.21ns ± 0% ~ (p=0.079 n=4+5)
Switch8Unpredictable-4 12.0ns ± 0% 9.5ns ± 0% -21.17% (p=0.000 n=5+4)
Switch32Predictable-4 3.06ns ± 0% 2.82ns ± 0% -7.78% (p=0.008 n=5+5)
Switch32Unpredictable-4 13.3ns ± 0% 9.5ns ± 0% -28.87% (p=0.016 n=4+5)
SwitchStringPredictable-4 3.71ns ± 0% 3.21ns ± 0% -13.43% (p=0.000 n=5+4)
SwitchStringUnpredictable-4 14.8ns ± 0% 15.1ns ± 0% +2.37% (p=0.008 n=5+5)
Change-Id: Ia0b85df7ca9273cf70c05eb957225c6e61822fa6
Reviewed-on: https://go-review.googlesource.com/c/go/+/403979
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'test/codegen')
| -rw-r--r-- | test/codegen/switch.go | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/test/codegen/switch.go b/test/codegen/switch.go index a6566834a8..af3762869a 100644 --- a/test/codegen/switch.go +++ b/test/codegen/switch.go @@ -24,6 +24,7 @@ func f(x string) int { // use jump tables for 8+ int cases func square(x int) int { // amd64:`JMP\s\(.*\)\(.*\)$` + // arm64:`MOVD\s\(R.*\)\(R.*<<3\)`,`JMP\s\(R.*\)$` switch x { case 1: return 1 @@ -49,6 +50,7 @@ func square(x int) int { // use jump tables for 8+ string lengths func length(x string) int { // amd64:`JMP\s\(.*\)\(.*\)$` + // arm64:`MOVD\s\(R.*\)\(R.*<<3\)`,`JMP\s\(R.*\)$` switch x { case "a": return 1 |