Add a space before build tag comments so it corresponds to the format
documented at https://golang.org/pkg/go/build/.
Change-Id: Ic29df4660a0968f58f721ec61943c0b277d4aaad
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/193777
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Use the recently added CPU feature detection API rather than custom
assembly.
While we are here also make vet happy by renaming params in the asm
file to chain to match the go function declaration.
Change-Id: Ide0171793c9fa5ef6671b394e97a27f2c6e44a9f
Reviewed-on: https://go-review.googlesource.com/c/164381
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>