From: Orit Wasserman
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hu
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hudzia
Signed-off-by: Pe
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hudzia
Signed-off-by: Pe
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hudzia
Signed-off-by: Pe
From: Orit Wasserman
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hu
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hudzia
Signed-off-by: Pe
For performance we are encoding long word at a time.
For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test
to find out if any byte in the long word is zero.
Signed-off-by: Benoit Hudzia
Signed-off-by: Pe
On 07/25/2012 08:50 AM, Orit Wasserman wrote:
> For performance we are encoding long word at a time.
> For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp():
[Technically, 'NUL' is the byte with value 0x00, 'NULL' is the pointer
with typical value 0x or 0x000
This patch broke master build, it causes compilation error with gcc 4.6.1:
/home/mackross/eclipse_linux_cdt_space/qemu_exynos4/savevm.c: In
function ‘xbzrle_encode_buffer’:
/home/mackross/eclipse_linux_cdt_space/qemu_exynos4/savevm.c:2476:13:
error: overflow in implicit constant conversion [-We
On 08/15/2012 10:22 AM, Igor Mitsyanko wrote:
> This patch broke master build, it causes compilation error with gcc 4.6.1:
>
> /home/mackross/eclipse_linux_cdt_space/qemu_exynos4/savevm.c: In
> function ‘xbzrle_encode_buffer’:
> /home/mackross/eclipse_linux_cdt_space/qemu_exynos4/savevm.c:2476:13:
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