JIT

GH-148726: Forward-port generational GC. #6260

Job	Run time
Interpreter (Debug)	9m 27s
x86_64-unknown-linux-gnu/gcc (Debug)	15m 2s
JIT with tail calling interpreter	4m 14s
JIT without optimizations (Debug)	3m 30s
Free-Threaded (Debug)	1m 19s
x86_64-unknown-linux-gnu/gcc (Release)	8m 20s
aarch64-unknown-linux-gnu/gcc (Release)	7m 1s
aarch64-unknown-linux-gnu/gcc (Debug)	9m 23s
i686-pc-windows-msvc/msvc (Debug)	29m 57s
x86_64-pc-windows-msvc/msvc (Debug)	21m 55s
aarch64-pc-windows-msvc/msvc (Debug)	28m 43s
aarch64-pc-windows-msvc/msvc (Release)	18m 36s
aarch64-apple-darwin/clang (Debug)	14m 26s
x86_64-pc-windows-msvc/msvc (Release)	19m 30s
x86_64-apple-darwin/clang (Release)	23m 35s
i686-pc-windows-msvc/msvc (Release)	15m 20s
x86_64-apple-darwin/clang (Debug)	31m 37s
aarch64-apple-darwin/clang (Release)	13m 18s
	4h 35m 13s

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