diff options
| author | Keith Randall <khr@golang.org> | 2023-09-18 13:31:49 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2023-10-06 17:02:53 +0000 |
| commit | cbcf8efa5f749b4e5bceda8682070cd9cf84bee5 (patch) | |
| tree | 0e8f56257343458b5ee320a146f27ed001d9fbf8 /src/cmd/compile/internal/test | |
| parent | b455e239aeeeb1d33eaa34e62c397f3408245a0c (diff) | |
| download | go-cbcf8efa5f749b4e5bceda8682070cd9cf84bee5.tar.xz | |
cmd/compile: use cache in front of type assert runtime call
That way we don't need to call into the runtime for every
type assertion (to an interface type).
name old time/op new time/op delta
TypeAssert-24 3.78ns ± 3% 1.00ns ± 1% -73.53% (p=0.000 n=10+8)
Change-Id: I0ba308aaf0f24a5495b4e13c814d35af0c58bfde
Reviewed-on: https://go-review.googlesource.com/c/go/+/529316
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Diffstat (limited to 'src/cmd/compile/internal/test')
| -rw-r--r-- | src/cmd/compile/internal/test/iface_test.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/test/iface_test.go b/src/cmd/compile/internal/test/iface_test.go index ebc4f891c9..db41eb8e55 100644 --- a/src/cmd/compile/internal/test/iface_test.go +++ b/src/cmd/compile/internal/test/iface_test.go @@ -124,3 +124,15 @@ func BenchmarkEfaceInteger(b *testing.B) { func i2int(i interface{}) int { return i.(int) } + +func BenchmarkTypeAssert(b *testing.B) { + e := any(Int(0)) + r := true + for i := 0; i < b.N; i++ { + _, ok := e.(I) + if !ok { + r = false + } + } + sink = r +} |