JIT

[WIP] Reference implementation: `frozendict` / `frozenset` literals and comprehensions #6931

Job	Run time
Free-Threaded (Debug)	3m 37s
Interpreter (Debug)	14m 5s
x86_64-unknown-linux-gnu/gcc (Release)	7m 58s
JIT with stress testing (Debug)	3m 57s
aarch64-apple-darwin/clang (Debug)	13m 32s
x86_64-unknown-linux-gnu/gcc (Debug)	15m 3s
x86_64-apple-darwin/clang (Release)	25m 43s
aarch64-unknown-linux-gnu/gcc (Debug)	9m 49s
aarch64-pc-windows-msvc/msvc (Debug)	24m 24s
aarch64-apple-darwin/clang (Release)	11m 26s
JIT with tail calling interpreter	5m 8s
x86_64-pc-windows-msvc/msvc (Release)	16m 48s
x86_64-pc-windows-msvc/msvc (Debug)	28m 0s
i686-pc-windows-msvc/msvc (Release)	16m 10s
JIT without optimizations (Debug)	3m 57s
aarch64-unknown-linux-gnu/gcc (Release)	6m 54s
x86_64-apple-darwin/clang (Debug)	32m 0s
i686-pc-windows-msvc/msvc (Debug)	25m 11s
aarch64-pc-windows-msvc/msvc (Release)	19m 35s
	4h 43m 17s

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