JIT

gh-134584: Eliminate redundant refcounting from `IS_OP` #4790

Job	Run time
Interpreter (Debug)	10m 44s
JIT with tail calling interpreter (21)	4m 7s
x86_64-pc-windows-msvc/msvc (Debug)	24m 11s
JIT without optimizations (Debug) (21)	12m 40s
Free-Threaded (Debug) (21)	16m 26s
aarch64-pc-windows-msvc/msvc (Release)	16m 45s
x86_64-pc-windows-msvc/msvc (Release)	13m 11s
i686-pc-windows-msvc/msvc (Debug)	21m 42s
aarch64-apple-darwin/clang (Release)	10m 42s
aarch64-unknown-linux-gnu/gcc (Release)	6m 30s
aarch64-apple-darwin/clang (Debug)	12m 1s
x86_64-apple-darwin/clang (Release)	22m 27s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 39s
i686-pc-windows-msvc/msvc (Release)	13m 23s
x86_64-unknown-linux-gnu/gcc (Release)	8m 12s
x86_64-unknown-linux-gnu/gcc (Debug)	11m 15s
x86_64-apple-darwin/clang (Debug)	35m 22s
aarch64-pc-windows-msvc/msvc (Debug)	25m 17s
	4h 33m 34s

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