JIT

use a subTest for sizes #243

Job	Run time
Interpreter (Debug)	7m 38s
Free-Threaded (Debug) (19)	12m 18s
i686-pc-windows-msvc/msvc (Debug)	17m 22s
i686-pc-windows-msvc/msvc (Release)	10m 55s
x86_64-pc-windows-msvc/msvc (Debug)	18m 20s
x86_64-pc-windows-msvc/msvc (Release)	10m 33s
aarch64-pc-windows-msvc/msvc (Debug)	4m 48s
aarch64-pc-windows-msvc/msvc (Release)	6m 27s
x86_64-apple-darwin/clang (Debug)	16m 20s
x86_64-apple-darwin/clang (Release)	11m 8s
aarch64-apple-darwin/clang (Debug)	9m 22s
aarch64-apple-darwin/clang (Release)	8m 52s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 28s
x86_64-unknown-linux-gnu/gcc (Release)	5m 46s
aarch64-unknown-linux-gnu/gcc (Debug)	5m 36s
aarch64-unknown-linux-gnu/gcc (Release)	4m 46s
	2h 38m 39s

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