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Re: PPC optimisations
You wrote:
> On Thu, Apr 27, 2000 at 08:46:48PM +0100, Ralph Schmidt wrote:
> > So there must be somebody who is listening about ppc optimisation misses
> > and who's able to add that to the compiler....
>
> There are interested people, but we have to know what the "misses" are
> first.
>
Ok...then we have a mutual interest......
> If you post small self-contained and well analyzed cases, it's more likely
> that someone will take a crack at it. It's hard to stare at something as
Please look into the bug report i sent beginning this week(the bug is fixed).
It contained a simple optimisation "Why blrl and not bctrl for indirect calls"
and a probably bigger one about unnecessary memcpy where it looks like
as if gcc is confused about its own stack content and does some temp
stack array copies.
I'm able to get in more detail when i get the current snapshot running on my
work host(which isn't such a trivial issue:-).
> big as gcc and say "today I'm going to make ppc codegen better" without a
> starting point of some sort.
>
I agree that optimising code doesn't happen over night and needs extensive
code analyse first.
> -Clint
>
>
---
Ralph Schmidt,laire@popmail.owl.de(private),NextMail welcome