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List: gcc
Subject: Re: cache misses in gcc 3.3
From: Tim Josling <tej () melbpc ! org ! au>
Date: 2003-02-15 0:13:27
[Download RAW message or body]
Zack Weinberg wrote:
>
> Tim Josling <tej@melbpc.org.au> writes:
>
> > Gabriel Dos Reis wrote:
> >>
> >> Tim Josling <tej@melbpc.org.au> writes:
> >>
> >> | How about:
> >> |
> >> | Parsing/tree building: nnn.n
> >> |
> >> | If agreeable I will submit a patch in due course.
> >>
> >> I would prefer a separate entry for tree building.
> >>
> >> -- Gaby
> >
> > So would I - but there would be hundreds of thousands of calls out of the
> > parse; to wrap these in timvar would be prohibitive.
>
> Mm, no, I bet it wouldn't. We already have two calls to
> timevar_push/pop for every token coming back from cpplib (TV_LEX and
> TV_CPP). That hasn't been a problem.
>
> On any quality operating system gettimeofday() is as fast as the
> relevant group of deranged assembly hackers can possibly make it.
>
> zw
OK I will look into it. It might be a few weeks.
Tim Josling
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