netisr: avoid ffs(0)
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Authored by dougm on Jul 31 2023, 8:20 PM.

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brooks

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rG1d897d19f31d: netisr: avoid ffs(0)

Summary

A rearrangement to avoid computing ffs(0) saves 128 bytes in resulting amd64 object code.

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Event Timeline

dougm created this revision.Jul 31 2023, 8:20 PM

Herald added subscribers: glebius, melifaro, ae. · View Herald TranscriptJul 31 2023, 8:20 PM

dougm requested review of this revision.Jul 31 2023, 8:20 PM

dougm added a reviewer: avg.Jun 5 2024, 3:09 AM

dougm added a reviewer: brooks.Jul 26 2024, 1:52 AM

brooks accepted this revision.Jul 26 2024, 4:38 PM

This revision is now accepted and ready to land.Jul 26 2024, 4:38 PM

Closed by commit rG1d897d19f31d: netisr: avoid ffs(0) (authored by dougm). · Explain WhyJul 26 2024, 4:53 PM

This revision was automatically updated to reflect the committed changes.

dougm added a commit: rG1d897d19f31d: netisr: avoid ffs(0).

Revision Contents
Changeset List

Path

Size

sys/

net/

netisr.c

4 lines

Diff 125389

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netisr: avoid ffs(0)ClosedPublicActions