Use the compiler intrinsic __builtin_popcount.
Change-Id: I58286fbcf66d1068390ea9caff2f98b8fe244c2d
Reviewed-on: https://go-review.googlesource.com/16831
Reviewed-by: Andrew Gerrand <adg@golang.org>
Change-Id: I6f3b351d42f5534dd5a5ff161f1e5680b4dbfd58
Reviewed-on: https://go-review.googlesource.com/16793
Reviewed-by: Andrew Gerrand <adg@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
App Engine is amd64 but it doesn't support uploading assembly files.
Use the explicit build tag so that it selects the generic implementation
on App Engine.
This is required to deploy golang.org.
Change-Id: I7374c91961c53d59f6fdcc9ac98b8a9cec755b2c
Reviewed-on: https://go-review.googlesource.com/15246
Reviewed-by: Andrew Gerrand <adg@golang.org>
This function accounts for 2% of "godoc -analysis=pointer"
and this change makes it twice as fast---and simpler.
Added test and benchmark.
Change-Id: I8578fa42dce34df057d81f6c522a7b4e0506d09d
Reviewed-on: https://go-review.googlesource.com/15211
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
