JIT

GH-128375: Better instrument for `FOR_ITER` (GH-128445) #2434

Job	Run time
Interpreter (Debug)	7m 50s
Free-Threaded (Debug) (19)	12m 28s
i686-pc-windows-msvc/msvc (Debug)	17m 34s
i686-pc-windows-msvc/msvc (Release)	10m 23s
x86_64-pc-windows-msvc/msvc (Debug)	17m 27s
x86_64-pc-windows-msvc/msvc (Release)	11m 20s
aarch64-pc-windows-msvc/msvc (Debug)	5m 39s
aarch64-pc-windows-msvc/msvc (Release)	5m 56s
x86_64-apple-darwin/clang (Debug)	12m 45s
x86_64-apple-darwin/clang (Release)	10m 8s
aarch64-apple-darwin/clang (Debug)	9m 46s
aarch64-apple-darwin/clang (Release)	8m 38s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 40s
x86_64-unknown-linux-gnu/gcc (Release)	5m 43s
aarch64-unknown-linux-gnu/gcc (Debug)	10m 50s
aarch64-unknown-linux-gnu/gcc (Release)	7m 50s
	2h 42m 57s

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