diff options
Diffstat (limited to 'src/pkg/runtime/vlop_arm_test.go')
-rw-r--r-- | src/pkg/runtime/vlop_arm_test.go | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/src/pkg/runtime/vlop_arm_test.go b/src/pkg/runtime/vlop_arm_test.go deleted file mode 100644 index cd28419ad..000000000 --- a/src/pkg/runtime/vlop_arm_test.go +++ /dev/null @@ -1,70 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package runtime_test - -import "testing" - -// arm soft division benchmarks adapted from -// http://ridiculousfish.com/files/division_benchmarks.tar.gz - -const numeratorsSize = 1 << 21 - -var numerators = randomNumerators() - -type randstate struct { - hi, lo uint32 -} - -func (r *randstate) rand() uint32 { - r.hi = r.hi<<16 + r.hi>>16 - r.hi += r.lo - r.lo += r.hi - return r.hi -} - -func randomNumerators() []uint32 { - numerators := make([]uint32, numeratorsSize) - random := &randstate{2147483563, 2147483563 ^ 0x49616E42} - for i := range numerators { - numerators[i] = random.rand() - } - return numerators -} - -func bmUint32Div(divisor uint32, b *testing.B) { - var sum uint32 - for i := 0; i < b.N; i++ { - sum += numerators[i&(numeratorsSize-1)] / divisor - } -} - -func BenchmarkUint32Div7(b *testing.B) { bmUint32Div(7, b) } -func BenchmarkUint32Div37(b *testing.B) { bmUint32Div(37, b) } -func BenchmarkUint32Div123(b *testing.B) { bmUint32Div(123, b) } -func BenchmarkUint32Div763(b *testing.B) { bmUint32Div(763, b) } -func BenchmarkUint32Div1247(b *testing.B) { bmUint32Div(1247, b) } -func BenchmarkUint32Div9305(b *testing.B) { bmUint32Div(9305, b) } -func BenchmarkUint32Div13307(b *testing.B) { bmUint32Div(13307, b) } -func BenchmarkUint32Div52513(b *testing.B) { bmUint32Div(52513, b) } -func BenchmarkUint32Div60978747(b *testing.B) { bmUint32Div(60978747, b) } -func BenchmarkUint32Div106956295(b *testing.B) { bmUint32Div(106956295, b) } - -func bmUint32Mod(divisor uint32, b *testing.B) { - var sum uint32 - for i := 0; i < b.N; i++ { - sum += numerators[i&(numeratorsSize-1)] % divisor - } -} - -func BenchmarkUint32Mod7(b *testing.B) { bmUint32Mod(7, b) } -func BenchmarkUint32Mod37(b *testing.B) { bmUint32Mod(37, b) } -func BenchmarkUint32Mod123(b *testing.B) { bmUint32Mod(123, b) } -func BenchmarkUint32Mod763(b *testing.B) { bmUint32Mod(763, b) } -func BenchmarkUint32Mod1247(b *testing.B) { bmUint32Mod(1247, b) } -func BenchmarkUint32Mod9305(b *testing.B) { bmUint32Mod(9305, b) } -func BenchmarkUint32Mod13307(b *testing.B) { bmUint32Mod(13307, b) } -func BenchmarkUint32Mod52513(b *testing.B) { bmUint32Mod(52513, b) } -func BenchmarkUint32Mod60978747(b *testing.B) { bmUint32Mod(60978747, b) } -func BenchmarkUint32Mod106956295(b *testing.B) { bmUint32Mod(106956295, b) } |