cache misses in gcc 3.3

[Tim Josling]

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