JIT

GH-148726: Forward-port generational GC. #6269

Job	Run time
x86_64-apple-darwin/clang (Release)	30m 13s
aarch64-apple-darwin/clang (Debug)	15m 10s
x86_64-apple-darwin/clang (Debug)	36m 11s
Interpreter (Debug)	12m 43s
JIT with tail calling interpreter	4m 16s
JIT without optimizations (Debug)	3m 48s
x86_64-unknown-linux-gnu/gcc (Release)	9m 17s
Free-Threaded (Debug)	4m 0s
aarch64-apple-darwin/clang (Release)	11m 49s
x86_64-unknown-linux-gnu/gcc (Debug)	15m 42s
aarch64-unknown-linux-gnu/gcc (Debug)	9m 8s
x86_64-pc-windows-msvc/msvc (Release)	16m 39s
aarch64-unknown-linux-gnu/gcc (Release)	7m 14s
i686-pc-windows-msvc/msvc (Debug)	21m 23s
x86_64-pc-windows-msvc/msvc (Debug)	23m 16s
aarch64-pc-windows-msvc/msvc (Debug)	24m 55s
aarch64-pc-windows-msvc/msvc (Release)	18m 28s
i686-pc-windows-msvc/msvc (Release)	15m 30s
	4h 39m 42s

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