pitrou commented on PR #47637:
URL: https://github.com/apache/arrow/pull/47637#issuecomment-3328912558
I'm trying this locally, also using conda-forge and therefore the same
toolchain. One interesting aspect is that IPO seems to decrease total library
size, perhaps by removing unused private functions and data:
* before:
```console
$ size -G /build/build-release/relwithdebinfo/*.so
text data bss total filename
1231288 436476 1080 1668844
/build/build-release/relwithdebinfo/libarrow_acero.so
11719000 2076782 46232 13842014
/build/build-release/relwithdebinfo/libarrow_compute.so
1029085 613682 3496 1646263
/build/build-release/relwithdebinfo/libarrow_dataset.so
11368776 3895932 2181849 17446557
/build/build-release/relwithdebinfo/libarrow.so
1010359 500136 1992 1512487
/build/build-release/relwithdebinfo/libarrow_testing.so
2675915 1510609 6328 4192852
/build/build-release/relwithdebinfo/libparquet.so
```
* after:
```console
$ size -G /build/build-release/relwithdebinfo/*.so
text data bss total filename
971243 380629 1552 1353424
/build/build-release/relwithdebinfo/libarrow_acero.so
11764472 1924230 46440 13735142
/build/build-release/relwithdebinfo/libarrow_compute.so
911885 500747 4328 1416960
/build/build-release/relwithdebinfo/libarrow_dataset.so
10306362 3473709 2183392 15963463
/build/build-release/relwithdebinfo/libarrow.so
954794 439139 3968 1397901
/build/build-release/relwithdebinfo/libarrow_testing.so
2446829 1344558 4128 3795515
/build/build-release/relwithdebinfo/libparquet.so
```
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