Re: [Valgrind-developers] Test results, 10 Dec 2002

[Jeremy F. <je...@go...>]

On Tue, 2002-12-10 at 16:59, Julian Seward wrote:
> The mozilla I was running was a 1.2.1 binary build (the straight .tar.gz)
> from ftp.mozilla.org, so egcs is not in the picture, and I would expect
> this problem to occur using that binary build on any distro -- the loop
> is in some .so supplied in the .tar.gz, so it'll be the same for everyone
> (I guess).

But you only see a problem under RH6.2?

Is it this build:
http://ftp.mozilla.org/pub/mozilla/releases/mozilla1.2.1/mozilla-i686-pc-linux-gnu-1.2.1.tar.gz

It could still be some interesting interaction between the system
libraries and moz itself...

I'll see if I can reproduce the problem.

> > BTW, I'm having a go at implementing your addrcheck cache idea.  It
> > isn't working out quite as well as I'd like.
> 
> You are?!  I had better reply to your initial comments on it ...

My first impression is that cache maintenance overwhelms any benefit of
making the fast path faster.  On the other hand, I may still be doing
something wrong.

I'll put the patch up for inspection.  The much more interesting
contribution is 72-jump, which adds a helper mechanism for computing
relative jump offsets rather than always having to hand-compute them
(and double-guess the emitters).  I implemented it out of necessity
because I wanted to do a jump over a sync_ccall site, but it turned out
to work well in every other instance of a jcond_lit, and it cleans
things up nicely.

	J