JIT

gh-134584: Eliminate redundant refcounting from `IS_OP` #4798

Job	Run time
Interpreter (Debug)	11m 9s
JIT without optimizations (Debug) (21)	12m 34s
JIT with tail calling interpreter (21)	4m 4s
Free-Threaded (Debug) (21)	16m 20s
aarch64-pc-windows-msvc/msvc (Release)	18m 15s
i686-pc-windows-msvc/msvc (Debug)	24m 58s
x86_64-pc-windows-msvc/msvc (Release)	13m 24s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 20s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 20s
x86_64-apple-darwin/clang (Debug)	28m 40s
x86_64-unknown-linux-gnu/gcc (Release)	8m 17s
aarch64-unknown-linux-gnu/gcc (Release)	6m 30s
aarch64-apple-darwin/clang (Release)	10m 51s
aarch64-apple-darwin/clang (Debug)	11m 44s
x86_64-apple-darwin/clang (Release)	22m 12s
i686-pc-windows-msvc/msvc (Release)	13m 17s
aarch64-pc-windows-msvc/msvc (Debug)	24m 58s
x86_64-pc-windows-msvc/msvc (Debug)	24m 47s
	4h 32m 40s

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