bionic

History

Christopher Ferris 4d8fe5177e Tune the memcpy for krait. Streamline the memcpy a bit removing some unnecessary instructions. The biggest speed improvement comes from changing the size of the preload. On krait, the sweet spot for the preload in the main loop is twice the L1 cache line size. In most cases, these small tweaks yield > 1000MB/s speed ups. As the size of the memcpy approaches about 1MB, the speed improvement disappears. Change-Id: Ief79694d65324e2db41bee4707dae19b8c24be62	2013-05-02 14:04:31 -07:00
..
bionic	Tune the memcpy for krait.	2013-05-02 14:04:31 -07:00
krait.mk	Create arch specific versions of strcmp.	2013-03-12 10:25:11 -07:00

Christopher Ferris 4d8fe5177e Tune the memcpy for krait.

Streamline the memcpy a bit removing some unnecessary instructions.

The biggest speed improvement comes from changing the size of
the preload. On krait, the sweet spot for the preload in the main
loop is twice the L1 cache line size.

In most cases, these small tweaks yield > 1000MB/s speed ups. As
the size of the memcpy approaches about 1MB, the speed improvement
disappears.

Change-Id: Ief79694d65324e2db41bee4707dae19b8c24be62

2013-05-02 14:04:31 -07:00

bionic

Tune the memcpy for krait.

2013-05-02 14:04:31 -07:00

krait.mk

Create arch specific versions of strcmp.

2013-03-12 10:25:11 -07:00