Re: [Qemu-devel] ?==?utf-8?q? [PATCH v3 0/8] target/ppc: Optimize emulation of some Altivec

Re: [Qemu-devel] ?==?utf-8?q? [PATCH v3 0/8] target/ppc: Optimize emulation of some Altivec

[Stefan Brankovic]

Hi Howard,

Thanks for letting me know about compilation errors in my patch, I really appreciate it. Those should be fixed  in the latest version of this patch (v3), so please take a look and let me know if there is anything else that should be changed.

Kind Regards,
Stefan

-------- Original Message --------
Subject: [PATCH v3 0/8] target/ppc: Optimize emulation of some Altivec
Date: Monday, June 24, 2019 12:10 CEST
From: Stefan Brankovic <stefan.brankovic@rt-rk.com>
To: stefan.brankovic@rt-rk.com


 Optimize emulation of ten Altivec instructions: lvsl, lvsr, vsl, vsr, vpkpx,
vgbbd, vclzb, vclzh, vclzw and vclzd.

This series buils up on and complements recent work of Thomas Murta, Mark
Cave-Ayland and Richard Henderson in the same area. It is based on devising TCG
translation implementation for selected instructions rather than using helpers.
The selected instructions are most of the time idiosyncratic to ppc platform,
so relatively complex TCG translation (without direct mapping to host
instruction that is not possible in these cases) seems to be the best option,
and that approach is presented in this series. The performance improvements are
significant in all cases.

V3:

Fixed problem during build.

V2:

Addressed Richard's Henderson's suggestions.
Fixed problem during build on patch 2/8.
Rebased series to the latest qemu code.

Stefan Brankovic (8):
target/ppc: Optimize emulation of lvsl and lvsr instructions
target/ppc: Optimize emulation of vsl and vsr instructions
target/ppc: Optimize emulation of vpkpx instruction
target/ppc: Optimize emulation of vgbbd instruction
target/ppc: Optimize emulation of vclzd instruction
target/ppc: Optimize emulation of vclzw instruction
target/ppc: Optimize emulation of vclzh and vclzb instructions
target/ppc: Refactor emulation of vmrgew and vmrgow instructions

target/ppc/helper.h | 10 -
target/ppc/int_helper.c | 365 --------------------
target/ppc/translate/vmx-impl.inc.c | 642 ++++++++++++++++++++++++++++++++----
3 files changed, 573 insertions(+), 444 deletions(-)

--
2.7.4
 
 

Re: [Qemu-devel] ?==?utf-8?q? [PATCH v3 0/8] target/ppc: Optimize emulation of some Altivec

[Stefan Brankovic]

Hi Howard,

Would you be so kind to send me exact qemu command line and applicable files(OS images or similar) that you used to bring this exact situation up. Thanks in advance.

Kind Regards,
Stefan

-------- Original Message --------
Subject: Re: [PATCH v3 0/8] target/ppc: Optimize emulation of some Altivec
Date: Monday, June 24, 2019 13:20 CEST
From: Howard Spoelstra <hsp.cat7@gmail.com>
To: Stefan Brankovic <Stefan.Brankovic@rt-rk.com>
CC: qemu-devel qemu-devel <qemu-devel@nongnu.org>
References: <1561371065-3637-1-git-send-email-stefan.brankovic@rt-rk.com> <43c6-5d10a600-15-34dab4c0@176981179>


   On Mon, Jun 24, 2019 at 12:28 PM Stefan Brankovic <Stefan.Brankovic@rt-rk.com> wrote:Hi Howard,

Thanks for letting me know about compilation errors in my patch, I really appreciate it. Those should be fixed  in the latest version of this patch (v3), so please take a look and let me know if there is anything else that should be changed.

Kind Regards,
Stefan

-------- Original Message --------
Subject: [PATCH v3 0/8] target/ppc: Optimize emulation of some Altivec
Date: Monday, June 24, 2019 12:10 CEST
From: Stefan Brankovic <stefan.brankovic@rt-rk.com>
To: stefan.brankovic@rt-rk.com Hi Stefan, V3 applies and builds cleanly on top of current master. The resulting qemu-system-ppc shows graphical distortions with OSX 10.2-4 guests. Mac OS 9.x guests seem OK.Please see screen dump. Best,Howard