JIT

Restore dubious "optimization". #140

Job	Run time
Interpreter (Debug)	6m 49s
Free-Threaded (Debug)	10m 29s
i686-pc-windows-msvc/msvc (Debug)	18m 38s
i686-pc-windows-msvc/msvc (Release)	20m 43s
x86_64-pc-windows-msvc/msvc (Debug)	17m 8s
x86_64-pc-windows-msvc/msvc (Release)	20m 16s
aarch64-pc-windows-msvc/msvc (Debug)	3m 51s
aarch64-pc-windows-msvc/msvc (Release)	6m 13s
x86_64-apple-darwin/clang (Debug)	12m 19s
x86_64-apple-darwin/clang (Release)	17m 14s
aarch64-apple-darwin/clang (Debug)	9m 1s
aarch64-apple-darwin/clang (Release)	15m 56s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 40s
x86_64-unknown-linux-gnu/gcc (Release)	17m 36s
x86_64-unknown-linux-gnu/clang (Debug)	7m 49s
x86_64-unknown-linux-gnu/clang (Release)	14m 6s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 10m 42s
aarch64-unknown-linux-gnu/gcc (Release)	52m 26s
aarch64-unknown-linux-gnu/clang (Debug)	1h 5m 46s
aarch64-unknown-linux-gnu/clang (Release)	36m 2s
	7h 10m 44s

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