JIT

gh-134584: Eliminate redundant refcounting from `_LOAD_ATTR_SLOT` #4826

Job	Run time
Interpreter (Debug)	11m 3s
JIT without optimizations (Debug) (21)	12m 30s
Free-Threaded (Debug) (21)	16m 39s
JIT with tail calling interpreter (21)	4m 13s
x86_64-pc-windows-msvc/msvc (Release)	12m 31s
aarch64-pc-windows-msvc/msvc (Release)	17m 55s
aarch64-apple-darwin/clang (Release)	10m 41s
i686-pc-windows-msvc/msvc (Release)	13m 13s
x86_64-apple-darwin/clang (Debug)	24m 4s
i686-pc-windows-msvc/msvc (Debug)	25m 1s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 19s
x86_64-unknown-linux-gnu/gcc (Release)	8m 9s
aarch64-apple-darwin/clang (Debug)	12m 23s
aarch64-pc-windows-msvc/msvc (Debug)	24m 32s
x86_64-apple-darwin/clang (Release)	21m 19s
x86_64-pc-windows-msvc/msvc (Debug)	24m 49s
aarch64-unknown-linux-gnu/gcc (Release)	6m 46s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 19s
	4h 26m 26s

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