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author | Josh Bleecher Snyder <josharian@gmail.com> | 2021-01-04 13:34:29 -0800 |
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committer | Josh Bleecher Snyder <josharian@gmail.com> | 2021-03-07 23:02:35 +0000 |
commit | b0df92703c89e42592659ae99cded0d5b68382b7 (patch) | |
tree | c0bee6040836350df5d876f61b42716b993475f8 /src/math | |
parent | 414fa8c35e7c2f65e2c767d6db2f25791e53b5c1 (diff) | |
download | go-b0df92703c89e42592659ae99cded0d5b68382b7.tar.gz go-b0df92703c89e42592659ae99cded0d5b68382b7.zip |
math/big: add shrVU and shlVU benchmarks
Change-Id: Id67d6ac856bd9271de99c3381bde910aa0c166e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/296011
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Diffstat (limited to 'src/math')
-rw-r--r-- | src/math/big/arith_test.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/math/big/arith_test.go b/src/math/big/arith_test.go index 2aca0effde..7b3427f834 100644 --- a/src/math/big/arith_test.go +++ b/src/math/big/arith_test.go @@ -671,3 +671,27 @@ func BenchmarkDivWVW(b *testing.B) { }) } } + +func BenchmarkNonZeroShifts(b *testing.B) { + for _, n := range benchSizes { + if isRaceBuilder && n > 1e3 { + continue + } + x := rndV(n) + s := uint(rand.Int63n(_W-2)) + 1 // avoid 0 and over-large shifts + z := make([]Word, n) + b.Run(fmt.Sprint(n), func(b *testing.B) { + b.SetBytes(int64(n * _W)) + b.Run("shrVU", func(b *testing.B) { + for i := 0; i < b.N; i++ { + _ = shrVU(z, x, s) + } + }) + b.Run("shlVU", func(b *testing.B) { + for i := 0; i < b.N; i++ { + _ = shlVU(z, x, s) + } + }) + }) + } +} |