Andreas Auernhammer
84e98f4576
poly1305: fix bug in amd64 assembly
...
Add the conditional subtraction of 3 from 'h2' (register R10).
Change-Id: I75615b0375f050a5cd97b968075c2992ccd1dee7
Reviewed-on: https://go-review.googlesource.com/30101
Reviewed-by: Adam Langley <agl@golang.org >
2016-10-02 16:48:29 +00:00
Andreas Auernhammer
568507f56e
x/crypto/poly1305: optimize amd64 assembly performance
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Improve performance on amd64 through faster assembly.
name old time/op new time/op delta
64-8 101ns ± 4% 42ns ± 3% -58.31% (p=0.002 n=6+6)
1K-8 887ns ± 1% 456ns ± 1% -48.53% (p=0.002 n=6+6)
64Unaligned-8 98.1ns ± 1% 41.1ns ± 1% -58.06% (p=0.002 n=6+6)
1KUnaligned-8 885ns ± 2% 460ns ± 3% -48.04% (p=0.002 n=6+6)
name old speed new speed delta
64-8 635MB/s ± 4% 1525MB/s ± 3% +140.15% (p=0.002 n=6+6)
1K-8 1.15GB/s ± 1% 2.24GB/s ± 1% +94.22% (p=0.002 n=6+6)
64Unaligned-8 653MB/s ± 1% 1557MB/s ± 1% +138.58% (p=0.002 n=6+6)
1KUnaligned-8 1.16GB/s ± 2% 2.23GB/s ± 3% +92.46% (p=0.002 n=6+6)
Change-Id: Ia3be8e7ff012f8a9b451d728a646f29f809ba665
Reviewed-on: https://go-review.googlesource.com/29993
Reviewed-by: Adam Langley <agl@golang.org >
2016-09-30 20:23:06 +00:00
Marga Manterola
c57d4a7191
poly1305, curve25519: add build constraints for appengine
...
Updates: golang/go#9845
Change-Id: I78ce460d2a188ee13dd3f80015919a14eba03d07
Reviewed-on: https://go-review.googlesource.com/8100
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org >
2015-03-27 05:11:19 +00:00
Ian Lance Taylor
6779fad1d0
go.crypto: add and adjust +build lines for 386 and gccgo
...
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6827061
2012-11-07 22:50:39 -08:00
Adam Langley
9c0a3ae199
go.crypto/poly1305: enable AMD64 assembly
...
This change alters the assembly to use FSUBD instructions such that
6l will actually emit the correct FSUBRD instructions and enables
the assembly code.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6514044
2012-09-14 17:00:38 -04:00
Andreas Auernhammer
Marga Manterola
Ian Lance Taylor
Adam Langley