test some lit stuff #7

Job	Run time
build-llvm (ubuntu-20.04, Release)	37m 8s
build-llvm (ubuntu-latest, Release)	38m 34s
build-llvm (macos-latest, Release)	18m 29s
build-llvm (windows-latest, Release)	1h 3m 32s
build-clang (ubuntu-20.04, Release)	5m 19s
test-llvm-z80 (ubuntu-20.04, Release)	2m 3s
build-clang (ubuntu-latest, Release)	5m 18s
test-llvm	0s
test-llvm-z80 (ubuntu-latest, Release)	2m 4s
build-clang (macos-latest, Release)	5m 20s
test-llvm-z80 (macos-latest, Release)	2m 32s
build-clang (windows-latest, Release)	3m 48s
test-llvm-z80 (windows-latest, Release)	2m 12s
test-clang	1s
nightly	1s
	3h 6m 21s

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