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Re: [PATCH 1/2] aarch64,falkor: Use vector registers for memmove

From: Szabolcs Nagy <szabolcs dot nagy at arm dot com>
To: Siddhesh Poyarekar <siddhesh at sourceware dot org>, libc-alpha at sourceware dot org
Cc: nd at arm dot com
Date: Fri, 29 Jun 2018 17:28:16 +0100
Subject: Re: [PATCH 1/2] aarch64,falkor: Use vector registers for memmove
References: <20180629104331.13263-1-siddhesh@sourceware.org>

On 29/06/18 11:43, Siddhesh Poyarekar wrote:

Vector registers perform much better for moves compared to pairs of
registers on falkor, so use them instead.  This results in a time
reduction of up to 50% (i.e. 2x improvement) for a lot of the smaller
sizes, i.e. up to 1K in memmove-walk.  Improvements for larger sizes are
smaller, at about 1%-2%.

	* sysdeps/aarch64/multiarch/memmove_falkor.S
	(__memcpy_falkor): Use vector registers.


this is ok to commit.

References:
- [PATCH 1/2] aarch64,falkor: Use vector registers for memmove
  - From: Siddhesh Poyarekar

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