Alan Donovan b7f0150d16 container/intsets: popcount: use POPCNT on amd64, Hacker's Delight algorithm on 386 ...

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>

2015-10-01 19:57:28 +00:00

..

popcnt_amd64.go

container/intsets: popcount: use POPCNT on amd64, Hacker's Delight algorithm on 386

2015-10-01 19:57:28 +00:00

popcnt_amd64.s

container/intsets: popcount: use POPCNT on amd64, Hacker's Delight algorithm on 386

2015-10-01 19:57:28 +00:00

popcnt_generic.go

container/intsets: popcount: use POPCNT on amd64, Hacker's Delight algorithm on 386

2015-10-01 19:57:28 +00:00

sparse_test.go

container/intsets: Intersects, SubsetOf, SymmetricDifference(With)

2015-01-14 20:51:28 +00:00

sparse.go

container/intsets: Intersects, SubsetOf, SymmetricDifference(With)

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util_test.go

container/intsets: popcount: use POPCNT on amd64, Hacker's Delight algorithm on 386

2015-10-01 19:57:28 +00:00

util.go

container/intsets: popcount: use POPCNT on amd64, Hacker's Delight algorithm on 386

2015-10-01 19:57:28 +00:00