RISC-V port enhancements #3213

Job	Run time
GNU ARM Toolchain	1m 43s
GCC MicroBlaze Toolchain	3m 48s
WIN32 MingW	4m 18s
GNU MSP430 Toolchain	2m 6s
WIN32 MSVC	3m 20s
CMake Example with Native GCC	42s
Native GCC (ubuntu-latest)	2m 15s
Native GCC (macos-latest)	3m 10s
	21m 22s

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