Add nullif_kernel benchmark (#9089)

# Which issue does this PR close?

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- related to #9085
- related to #9022

# Rationale for this change

the `nullif` kernel has an optimization for counting nulls as part of
applying nullif, and I did not know if that made a difference (turns out
it does).

I made a benchmark to be able to measure this difference

# What changes are included in this PR?

Add a `nullif_kernel` benchmark

# Are these changes tested?

I ran them manually
# Are there any user-facing changes?

No new benchmark

Author: alamb

arrow/Cargo.toml

@@ -172,7 +172,6 @@ name = "coalesce_kernels"
 harness = false
 required-features = ["test_utils"]
 
-
 [[bench]]
 name = "take_kernels"
 harness = false
@@ -311,6 +310,11 @@ name = "lexsort"
 harness = false
 required-features = ["test_utils"]
 
+[[bench]]
+name = "nullif_kernel"
+harness = false
+required-features = ["test_utils"]
+
 [[test]]
 name = "csv"
 required-features = ["csv", "chrono-tz"]

arrow/benches/nullif_kernel.rs

@@ -0,0 +1,66 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#[macro_use]
+extern crate criterion;
+use criterion::Criterion;
+
+use arrow::util::bench_util::{create_boolean_array, create_primitive_array};
+
+use arrow::array::*;
+use arrow_array::types::Int64Type;
+use arrow_select::nullif::nullif;
+use std::hint;
+
+fn bench_nullif(left: &dyn Array, right: &BooleanArray) {
+    hint::black_box(nullif(left, right).unwrap());
+}
+
+fn add_benchmark(c: &mut Criterion) {
+    let size = 8192usize;
+
+    // create input before benchmark to ensure allocations are consistent
+    let int64_no_nulls = create_primitive_array::<Int64Type>(size, 0.0);
+    let int64_nulls = create_primitive_array::<Int64Type>(size, 0.1);
+
+    let mask_10 = create_boolean_array(size, 0.0, 0.1);
+    let mask_10_sliced = create_boolean_array(size + 7, 0.0, 0.1).slice(7, size);
+    let mask_1 = create_boolean_array(size, 0.0, 0.01);
+
+    c.bench_function("nullif no-nulls mask(10%)", |b| {
+        b.iter(|| bench_nullif(&int64_no_nulls, &mask_10))
+    });
+    c.bench_function("nullif no-nulls mask(10%, sliced)", |b| {
+        b.iter(|| bench_nullif(&int64_no_nulls, &mask_10_sliced))
+    });
+    c.bench_function("nullif no-nulls mask(1%)", |b| {
+        b.iter(|| bench_nullif(&int64_no_nulls, &mask_1))
+    });
+
+    c.bench_function("nullif nulls mask(10%)", |b| {
+        b.iter(|| bench_nullif(&int64_nulls, &mask_10))
+    });
+    c.bench_function("nullif nulls mask(10%, sliced)", |b| {
+        b.iter(|| bench_nullif(&int64_nulls, &mask_10_sliced))
+    });
+    c.bench_function("nullif nulls mask(1%)", |b| {
+        b.iter(|| bench_nullif(&int64_nulls, &mask_1))
+    });
+}
+
+criterion_group!(benches, add_benchmark);
+criterion_main!(benches);