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authorSiddhesh Poyarekar <siddhesh@sourceware.org>2018-06-29 22:45:59 +0530
committerSiddhesh Poyarekar <siddhesh@sourceware.org>2018-06-29 22:45:59 +0530
commit0aec4c1d1801e8016ebe89281d16597e0557b8be (patch)
tree7b0468557d57862885d8ee5b914125f6ffc66102 /sysdeps/arm
parentce76a5cb8d3658cc4fc935cf774e8bb5836796dc (diff)
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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.
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