git: openjdk/mobile: 8235551: BitMap::count_one_bits should use population_count

[duke]

Changeset: 91de8b6c
Author:    Claes Redestad <redestad at openjdk.org>
Date:      2019-12-11 16:24:10 +0000
URL:       https://git.openjdk.java.net/mobile/commit/91de8b6c

8235551: BitMap::count_one_bits should use population_count

Co-authored-by: Kim Barrett <kim.barrett at oracle.com>
Reviewed-by: kbarrett, neliasso

! src/hotspot/share/opto/regmask.cpp
! src/hotspot/share/utilities/bitMap.cpp
! src/hotspot/share/utilities/bitMap.hpp
! src/hotspot/share/utilities/population_count.hpp
! test/hotspot/gtest/utilities/test_population_count.cpp