decomp: Support LZCOUNT & POPCOUNT ops (#118) #720

Job	Run time
llvm-build-and-test (20, 22.04, Debug, OFF)	19m 44s
ghidra-script-tests (22.04)	16m 53s
llvm-build-and-test (20, 22.04, Release, OFF)	18m 55s
	55m 32s

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