pitrou opened a new pull request #8877:
URL: https://github.com/apache/arrow/pull/8877
Reduce generated code size and compilation time for `vector_sort.cc` by 35%.
Before:
```
$ ls -la
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
-rw-rw-r-- 1 antoine antoine 29292160 déc. 9 10:12
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
$ size
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
text data bss dec hex filename
1191948 2864 360 1195172 123ca4
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
$ rm
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o &&
time CCACHE_DISABLE=1 ninja
[65/65] Linking CXX executable release/arrow-flight-benchmark
real 0m40,730s
user 0m44,445s
sys 0m2,286s
```
After:
```
$ ls -la
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
-rw-rw-r-- 1 antoine antoine 19131928 déc. 9 10:15
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
$ size
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
text data bss dec hex filename
763009 2528 360 765897 bafc9
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o
$ rm
./src/arrow/CMakeFiles/arrow_objlib.dir/compute/kernels/vector_sort.cc.o &&
time CCACHE_DISABLE=1 ninja
[65/65] Linking CXX executable release/arrow-flight-benchmark
real 0m25,740s
user 0m29,434s
sys 0m2,209s
```
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