JIT

Simplify and speed-up an itertools recipe (gh-127848) #130

Job	Run time
Interpreter (Debug)	7m 40s
Free-Threaded (Debug) (19)	11m 50s
i686-pc-windows-msvc/msvc (Debug)	18m 16s
i686-pc-windows-msvc/msvc (Release)	10m 56s
x86_64-pc-windows-msvc/msvc (Debug)	18m 17s
x86_64-pc-windows-msvc/msvc (Release)	10m 46s
aarch64-pc-windows-msvc/msvc (Debug)	5m 31s
aarch64-pc-windows-msvc/msvc (Release)	6m 34s
x86_64-apple-darwin/clang (Debug)	12m 14s
x86_64-apple-darwin/clang (Release)	9m 47s
aarch64-apple-darwin/clang (Debug)	9m 11s
aarch64-apple-darwin/clang (Release)	8m 13s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 57s
x86_64-unknown-linux-gnu/gcc (Release)	5m 38s
aarch64-unknown-linux-gnu/gcc (Debug)	6s
aarch64-unknown-linux-gnu/gcc (Release)	5s
	2h 23m 1s

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