[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Re: dyngen-exec.h cleanup
From: |
Laurent Desnogues |
Subject: |
Re: [Qemu-devel] Re: dyngen-exec.h cleanup |
Date: |
Sun, 8 Mar 2009 17:12:39 +0100 |
On Sun, Mar 8, 2009 at 5:00 PM, Jan Kiszka <address@hidden> wrote:
> Laurent Desnogues wrote:
[...]
>> Yes, and I did the work for ARM. However when considering the
>> removal of AREG0, and after looking at generated code, I came
>> to the perhaps premature conclusion that removing it would not
>> bring me any speedup (at least for a not so register starved
>> target as x86_64).
>
> I don't think we are looking for speedup here, just for cleanup. Status
> quo regarding performance after a conversion would be more than fine IMHO.
I was ambiguous, I meant I expect slowdowns... But given how many
times I was wrong in the past when I thought some tricks would
speedup things, I should probably not trust my a priori.
>> Well dyngen-exec.h is long gone in my sources even though
>> AREG0 is still used. I would have to backtrack my changes to
>> see how I arrived to that, but for sure the first thing to do is to
>> remove cpu_T from ARM target.
>
> Yes, please share your wisdom!
Sorry if I sounded arrogant, I just wanted to highlight the fact one
can achieve your aim. As far as sharing goes, that's another
story.
Laurent
Re: [Qemu-devel] dyngen-exec.h cleanup, Hasso Tepper, 2009/03/08
Re: [Qemu-devel] dyngen-exec.h cleanup, Anthony Liguori, 2009/03/08