JIT

gh-134584: Eliminate redundant refcounting from `_LOAD_ATTR_INSTANCE_… #4658

Job	Run time
Interpreter (Debug)	10m 36s
Free-Threaded (Debug) (21)	16m 12s
JIT with tail calling interpreter (21)	4m 10s
JIT without optimizations (Debug) (21)	12m 15s
aarch64-pc-windows-msvc/msvc (Release)	18m 35s
aarch64-pc-windows-msvc/msvc (Debug)	23m 55s
x86_64-apple-darwin/clang (Release)	35m 14s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 22s
aarch64-apple-darwin/clang (Release)	11m 9s
x86_64-apple-darwin/clang (Debug)	29m 54s
i686-pc-windows-msvc/msvc (Release)	13m 37s
x86_64-unknown-linux-gnu/gcc (Release)	8m 7s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 58s
i686-pc-windows-msvc/msvc (Debug)	25m 4s
x86_64-pc-windows-msvc/msvc (Release)	13m 24s
aarch64-unknown-linux-gnu/gcc (Release)	6m 55s
x86_64-pc-windows-msvc/msvc (Debug)	24m 52s
aarch64-apple-darwin/clang (Debug)	16m 1s
	4h 50m 20s

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