cyb70289 commented on a change in pull request #10009:
URL: https://github.com/apache/arrow/pull/10009#discussion_r613725348
##########
File path: cpp/src/arrow/compute/kernels/vector_sort.cc
##########
@@ -492,16 +493,8 @@ class ArrayCountOrCompareSorter {
uint64_t* Sort(uint64_t* indices_begin, uint64_t* indices_end, const
ArrayType& values,
int64_t offset, const ArraySortOptions& options) {
if (values.length() >= countsort_min_len_ && values.length() >
values.null_count()) {
- c_type min{std::numeric_limits<c_type>::max()};
- c_type max{std::numeric_limits<c_type>::min()};
-
- VisitRawValuesInline(
- values,
- [&](c_type v) {
- min = std::min(min, v);
- max = std::max(max, v);
- },
- []() {});
+ c_type min, max;
+ std::tie(min, max) = GetMinMax<c_type>(*values.data());
Review comment:
Small performance improvement for int64narrow sorting.
```
benchmark baseline contender
change %
ArraySortIndicesInt64Narrow/32768/2 507.257 MiB/sec 632.995 MiB/sec
24.788
ArraySortIndicesInt64Narrow/32768/10 643.182 MiB/sec 724.483 MiB/sec
12.640
```
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