JIT

gh-134584: Eliminate redundant refcounting from `IS_OP` (GH-143171) #6886

Job	Run time
Interpreter (Debug)	10m 58s
JIT without optimizations (Debug) (21)	12m 40s
Free-Threaded (Debug) (21)	16m 26s
JIT with tail calling interpreter (21)	4m 15s
i686-pc-windows-msvc/msvc (Debug)	25m 27s
aarch64-unknown-linux-gnu/gcc (Release)	6m 31s
i686-pc-windows-msvc/msvc (Release)	13m 38s
x86_64-unknown-linux-gnu/gcc (Release)	8m 13s
x86_64-apple-darwin/clang (Debug)	22m 48s
aarch64-apple-darwin/clang (Debug)	13m 2s
x86_64-pc-windows-msvc/msvc (Debug)	21m 47s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 12s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 18s
aarch64-apple-darwin/clang (Release)	12m 14s
aarch64-pc-windows-msvc/msvc (Debug)	24m 29s
x86_64-apple-darwin/clang (Release)	19m 2s
aarch64-pc-windows-msvc/msvc (Release)	19m 23s
x86_64-pc-windows-msvc/msvc (Release)	13m 30s
	4h 24m 53s

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