JIT

Reference implementation for PEP 828 #5456

Job	Run time
JIT with tail calling interpreter	4m 15s
Free-Threaded (Debug)	3m 37s
JIT without optimizations (Debug)	3m 13s
Interpreter (Debug)	11m 54s
x86_64-apple-darwin/clang (Release)	29m 43s
x86_64-unknown-linux-gnu/gcc (Debug)	13m 35s
x86_64-unknown-linux-gnu/gcc (Release)	8m 49s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 31s
aarch64-unknown-linux-gnu/gcc (Release)	6m 47s
x86_64-apple-darwin/clang (Debug)	29m 29s
aarch64-apple-darwin/clang (Release)	14m 5s
aarch64-apple-darwin/clang (Debug)	14m 19s
i686-pc-windows-msvc/msvc (Debug)	1h 0m 5s
i686-pc-windows-msvc/msvc (Release)	19m 38s
x86_64-pc-windows-msvc/msvc (Release)	9m 50s
aarch64-pc-windows-msvc/msvc (Release)	13m 58s
aarch64-pc-windows-msvc/msvc (Debug)	1h 0m 6s
x86_64-pc-windows-msvc/msvc (Debug)	1h 0m 5s
	6h 11m 59s

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