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bytes: add benchmark for LastIndex
Add BenchmarkLastIndexHard[1-3] in preparation for implementing LastIndex using Rabin-Karp akin to strings.LastIndex BenchmarkLastIndexHard1-8 500 3162694 ns/op BenchmarkLastIndexHard2-8 500 3170475 ns/op BenchmarkLastIndexHard3-8 500 3051127 ns/op Change-Id: Id99f85f9640e248958f2b4be4dfd8c974e3b50e7 Reviewed-on: https://go-review.googlesource.com/c/go/+/166257 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
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@ -1642,6 +1642,16 @@ func makeBenchInputHard() []byte {
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var benchInputHard = makeBenchInputHard()
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func benchmarkLastIndexHard(b *testing.B, sep []byte) {
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for i := 0; i < b.N; i++ {
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LastIndex(benchInputHard, sep)
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}
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}
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func BenchmarkLastIndexHard1(b *testing.B) { benchmarkLastIndexHard(b, []byte("<>")) }
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func BenchmarkLastIndexHard2(b *testing.B) { benchmarkLastIndexHard(b, []byte("</pre>")) }
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func BenchmarkLastIndexHard3(b *testing.B) { benchmarkLastIndexHard(b, []byte("<b>hello world</b>")) }
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func BenchmarkSplitEmptySeparator(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Split(benchInputHard, nil)
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