Pr cc refactoring #1575

Job	Run time
macos-latest: clang++ Release Threads	26m 51s
macos-latest: clang++ Release OneTBB	5m 1s
macos-latest: clang++ Release PaRSEC	5m 5s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	26m 17s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	1m 36s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	1m 4s
macos-latest: clang++ Debug Threads	35m 18s
macos-latest: clang++ Debug OneTBB	4m 1s
macos-latest: clang++ Debug PaRSEC	4m 24s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	32m 34s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	1m 48s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	1m 18s
	2h 25m 17s

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