This change updates the Poly1305 code in x/crypto to reflect some
comments from the review of
https://go-review.googlesource.com/cl/29245/.
Following this change, poly1305_arm.s will be renamed to sum_arm.s, to
match the other files here. (The review becomes confusing if that's done
in the same change as the asmfmt changes.)
Change-Id: Iddf43615eba97c975adb135aef3a814a37e9ec02
Reviewed-on: https://go-review.googlesource.com/30820
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Munday <munday@ca.ibm.com>
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>
Filippo Valsorda
Adam Langley
Jungho Ahn