JIT

address review: format-spec & more tests #267

Job	Run time
Interpreter (Debug)	7m 36s
Free-Threaded (Debug) (19)	12m 17s
i686-pc-windows-msvc/msvc (Debug)	18m 39s
i686-pc-windows-msvc/msvc (Release)	11m 19s
x86_64-pc-windows-msvc/msvc (Debug)	18m 1s
x86_64-pc-windows-msvc/msvc (Release)	11m 30s
aarch64-pc-windows-msvc/msvc (Debug)	5m 52s
aarch64-pc-windows-msvc/msvc (Release)	6m 28s
x86_64-apple-darwin/clang (Debug)	10m 51s
x86_64-apple-darwin/clang (Release)	7m 59s
aarch64-apple-darwin/clang (Debug)	8m 54s
aarch64-apple-darwin/clang (Release)	9m 3s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 42s
x86_64-unknown-linux-gnu/gcc (Release)	5m 45s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 24s
aarch64-unknown-linux-gnu/gcc (Release)	4m 50s
	2h 35m 10s

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