x/crypto/poly1305: add ARM assembly

This change adds ARMv6 assembly implementation. The referenced assembly code was
  the public domain source by Andrew Moon in https://github.com/floodyberry/poly1305-opt/blob/master/app/extensions/poly1305/poly1305_armv6-32.inc.
  The author has confirmed that it's ok to put it under the Go license.

  Benchmark results on Raspberry Pi (ARMv6-compatible processor rev 7),
   o Without ARMv6 assembly
     Benchmark1K      5000      287177 ns/op     3.57 MB/s
     Benchmark64     50000       38880 ns/op     1.65 MB/s

   o With ARMv6 assembly
     Benchmark1K    100000       15964 ns/op    64.14 MB/s
     Benchmark64   1000000        1472 ns/op    43.46 MB/s

Change-Id: Iea5b0b831ac097cc6d477a8fccbf0ddb4819724c
Reviewed-on: https://go-review.googlesource.com/9765
Reviewed-by: Adam Langley <agl@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>

This commit is contained in:

Jungho Ahn

2015-05-14 21:10:51 +00:00

committed by

Adam Langley

parent e3f150b437

commit 4d48e5fa3d

3 changed files with 358 additions and 1 deletions

									
										poly1305/sum_ref.go
									
		+1
		-1
	
												View File
												
				@@ -2,7 +2,7 @@

				// Use of this source code is governed by a BSD-style

				// license that can be found in the LICENSE file.

				// +build !amd64 gccgo appengine

				// +build !amd64,!arm gccgo appengine

				package poly1305