Date: Sun, 10 Sep 1995 11:53:31 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: bde@zeta.org.au (Bruce Evans) Cc: pst@shockwave.com, wosch@freebsd.first.gmd.de, current@freebsd.org Subject: Re: 20-40% faster wc(1) Message-ID: <199509101853.LAA15026@phaeton.artisoft.com> In-Reply-To: <199509100758.RAA27567@godzilla.zeta.org.au> from "Bruce Evans" at Sep 10, 95 05:58:09 pm
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> > >I don't understand... the original isspace() was just a lookup in a table > >followed by an 'and'. I assume this changed because of the rune code? > > The rune code has 2 or 3 more tests. > > >The question you should be asking yourself is WHY is isspace(3) slow? > > Because gcc does a poor job of optimizing away the extra tests. [ ... GCC code generation analysis ... ] Bruce, you should send this to the GCC people, *really*. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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