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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2018-06-29 22:45:59 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2018-06-29 22:45:59 +0530 |
| commit | 0aec4c1d1801e8016ebe89281d16597e0557b8be (patch) | |
| tree | 7b0468557d57862885d8ee5b914125f6ffc66102 /string | |
| parent | ce76a5cb8d3658cc4fc935cf774e8bb5836796dc (diff) | |
| download | glibc-0aec4c1d1801e8016ebe89281d16597e0557b8be.tar.xz glibc-0aec4c1d1801e8016ebe89281d16597e0557b8be.zip | |
aarch64,falkor: Use vector registers for memcpy
Vector registers perform better than scalar register pairs for copying
data so prefer them instead. This results in a time reduction of over
50% (i.e. 2x speed improvemnet) for some smaller sizes for memcpy-walk.
Larger sizes show improvements of around 1% to 2%. memcpy-random shows
a very small improvement, in the range of 1-2%.
* sysdeps/aarch64/multiarch/memcpy_falkor.S (__memcpy_falkor):
Use vector registers.
Diffstat (limited to 'string')
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