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>