Re: [Qemu-devel] [PATCH 0/2] Fainal TCG clean-up patches

[Blue Swirl]

Thanks, applied.

On Thu, Jan 31, 2013 at 6:47 PM, Evgeny Voevodin
<address@hidden> wrote:
>
> This set of patches moves rest global variables to tcg_ctx.
> Also second patch introduces new TBContext for translation blocks
> ans moves translation block globals there. We place tb_ctx inside
> tcg_ctx and get noticable speed-up.
>
>
> After this patchset was aplied,
> I noticed ~4-5% speed-up of code generation.
>
> Here is the test procedure:
> 1. Boot Linux Kernel 5 times.
> 2. For each iteration wait while "JIT cycles" is stable for ~10 seconds
> 3. Write down the "cycles/op"
>
> Here are the results (tested on gcc-4.6):
>
> Before clean-up:
> min: 662.4
> max: 696
> avg: 672.28
> standard deviation: ~17 ~= 3.5%
>
> Average cycles/op = 672 +- 17
>
>
> After clean-up:
> min: 635
> max: 650.5
> avg: 640.14
> standard deviation: ~8 ~= 1.6%
>
> Average cycles/op = 640 +- 8
>
> Evgeny Voevodin (2):
>   TCG: Final globals clean-up
>   TCG: Move translation block variables to new context inside tcg_ctx:
>     tb_ctx
>
>  cpu-exec.c              |   18 +++--
>  include/exec/exec-all.h |   27 +++++---
>  linux-user/main.c       |    6 +-
>  tcg/tcg.c               |    2 +-
>  tcg/tcg.h               |   16 ++++-
>  translate-all.c         |  173 
> +++++++++++++++++++++++------------------------
>  6 files changed, 130 insertions(+), 112 deletions(-)
>
> --
> 1.7.9.5
>