Assorted microoptimizations and hot-path refactoring#23844

Merged

richardleach merged 11 commits intoPerl:bleadfrom

richardleach:no_zero_the_zeros

Oct 14, 2025

Commits on Oct 14, 2025

Various functions - when a field is already zero, don't set it to zero.
richardleach
committed
newSVbool/_true/_false - assign the required values directly.
richardleach
committed
Perl_regexec_flags - create and populate a new SV in one call, not two.
richardleach
committed
pp_index - create a SVt_PV directly, not via upgrade
richardleach
committed
Perl_newSV - entirely create the new SV within this function.
richardleach
committed
Perl_newSVrv - after a sv_clear, do the upgrade to SVt_IV inline.
richardleach
committed
Perl_newSVpvn_share - minor changes to help the compiler.
richardleach
committed
Perl_newSVhek - refactor to prioritize the overwhelming common case.
richardleach
committed
S_sv_gets_append_to_utf8 - sv_gets upgrades tsv, so create SVt_PV directly.
richardleach
committed
Perl_newSVpvz - add some ASSUMEs to help the compiler
richardleach
committed
Perl_sv_grow_fresh - set SvLEN before calling malloc
richardleach
committed