[x264-devel] x86inc: Utilize the shadow space on 64-bit Windows

[Henrik Gramner]

x264 | branch: master | Henrik Gramner <henrik at gramner.com> | Sat May 11 23:39:09 2013 +0200| [eefaff1128ea9eb8dcd6796957ca5e56727337b8] | committer: Jason Garrett-Glaser

x86inc: Utilize the shadow space on 64-bit Windows

Store XMM6 and XMM7 in the shadow space in functions that clobbers them.
This way we don't have to adjust the stack pointer as often,
reducing the number of instructions as well as code size.

> http://git.videolan.org/gitweb.cgi/x264.git/?a=commit;h=eefaff1128ea9eb8dcd6796957ca5e56727337b8
---

 common/x86/deblock-a.asm |   19 ++++-------
 common/x86/mc-a.asm      |    7 ++--
 common/x86/pixel-a.asm   |    2 +-
 common/x86/sad-a.asm     |   23 +++++++------
 common/x86/x86inc.asm    |   83 +++++++++++++++++++++++++---------------------
 tools/checkasm-a.asm     |    6 ++--
 6 files changed, 72 insertions(+), 68 deletions(-)

Diff:   http://git.videolan.org/gitweb.cgi/x264.git/?a=commitdiff;h=eefaff1128ea9eb8dcd6796957ca5e56727337b8