busybox-w32/libbb/popcnt.c, branch cron_changesA mirror of https://github.com/rmyorston/busybox-w32.git
https://git.lua4.win/busybox-w32/atom?h=cron_changes2024-05-31T14:03:23+00:00libbb: add bit counting function, use where appropriate2024-05-31T14:03:23+00:00Denys Vlasenkovda.linux@googlemail.com2024-05-31T10:01:43+00:00urn:sha1:2075553a1b0eb843d4ee73a039b3e30bed9274e0
Although "naive" counting function is not too slow and is smaller,
using it on e.g. each of 1024 words of CPU mask feels wrong.
function old new delta
bb_popcnt_32 - 52 +52
get_prefix 323 321 -2
nproc_main 206 199 -7
d4_run_script 739 731 -8
ipcalc_main 533 507 -26
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(add/remove: 2/0 grow/shrink: 0/4 up/down: 52/-43) Total: 9 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>