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Differential D41980

lib/libc/amd64/string: implement strpbrk() through strcspn()
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Authored by fuz on Sep 25 2023, 9:49 PM.
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Reviewers
mjg
kib
Commits
rGf42eca44bdfb: share/man/man7/simd.7: document amd64 SIMD use for strpbrk()
rG309b30ce8419: lib/libc/amd64/string: implement strpbrk() through strcspn()
rG8b60e1fdbefa: share/man/man7/simd.7: document amd64 SIMD use for strpbrk()
rGf4fc317c364f: lib/libc/amd64/string: implement strpbrk() through strcspn()
Summary

This lets us use our optimised strcspn() routine for strpbrk() calls.

In principle, this change could be applied to all architectures
through modification of lib/libc/string/strpbrk.c as strcspn
has a better generic implementation than strpbrk. I have avoided
this as to reduce the impact of these changes. If desired I can
update this DR to do so.

Sponsored by: The FreeBSD Foundation

Test Plan

passes test suite

Diff Detail

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rG FreeBSD src repository
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Revision Contents
Changeset List

PathSize
lib/
libc/
amd64/
string/
1 line
18 lines
43 lines

Diff 131807

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lib/libc/amd64/string/Makefile.inc

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lib/libc/amd64/string/strcspn.S

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lib/libc/amd64/string/strpbrk.c

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