ch2/popcount: show go1.7 SSA benchmarks

Change-Id: I1e9b29320e938a1dc8763f66b243c1a08f33b7d7
qizhanchan · Dec 6, 2016 · b725d60 · b725d60
1 parent 4cccb40
commit b725d60
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/ch2/popcount/popcount_test.go b/ch2/popcount/popcount_test.go
@@ -67,17 +67,23 @@ func BenchmarkPopCountByShifting(b *testing.B) {
 	}
 }
 
-// 2.67GHz Xeon
+// Go 1.6, 2.67GHz Xeon
 // $ go test -cpu=4 -bench=. gopl.io/ch2/popcount
 // BenchmarkPopCount-4                  200000000         6.30 ns/op
 // BenchmarkBitCount-4                  300000000         4.15 ns/op
 // BenchmarkPopCountByClearing-4        30000000         45.2 ns/op
 // BenchmarkPopCountByShifting-4        10000000        153 ns/op
 //
-// 2.5GHz Intel Core i5
+// Go 1.6, 2.5GHz Intel Core i5
 // $ go test -cpu=4 -bench=. gopl.io/ch2/popcount
-// testing: warning: no tests to run
 // BenchmarkPopCount-4                  200000000         7.52 ns/op
 // BenchmarkBitCount-4                  500000000         3.36 ns/op
 // BenchmarkPopCountByClearing-4        50000000         34.3 ns/op
 // BenchmarkPopCountByShifting-4        20000000        108 ns/op
+//
+// Go 1.7, 3.5GHz Xeon
+// $ go test -cpu=4 -bench=. gopl.io/ch2/popcount
+// BenchmarkPopCount-12                 2000000000        0.28 ns/op
+// BenchmarkBitCount-12                 2000000000        0.27 ns/op
+// BenchmarkPopCountByClearing-12       100000000        18.5 ns/op
+// BenchmarkPopCountByShifting-12       20000000         70.1 ns/op