Pr cc refactoring #1420

Job	Run time
macos-latest: clang++ Release Threads	32m 21s
macos-latest: clang++ Release OneTBB	3m 58s
macos-latest: clang++ Release PaRSEC	3m 18s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	56m 47s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	2m 16s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	2m 59s
macos-latest: clang++ Debug Threads	32m 37s
macos-latest: clang++ Debug OneTBB	3m 43s
macos-latest: clang++ Debug PaRSEC	5m 1s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	49m 16s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	3m 31s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	3m 44s
	3h 19m 31s

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