JIT

gh-134584: Eliminate redundant refcounting from `_LOAD_ATTR_INSTANCE_VALUE` #4639

Job	Run time
Interpreter (Debug)	10m 38s
Free-Threaded (Debug) (21)	15m 24s
JIT with tail calling interpreter (21)	4m 6s
JIT without optimizations (Debug) (21)	12m 20s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 7s
aarch64-pc-windows-msvc/msvc (Release)	19m 48s
aarch64-pc-windows-msvc/msvc (Debug)	25m 2s
x86_64-apple-darwin/clang (Release)	27m 18s
aarch64-apple-darwin/clang (Debug)	12m 23s
i686-pc-windows-msvc/msvc (Release)	13m 46s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 32s
aarch64-apple-darwin/clang (Release)	13m 11s
x86_64-pc-windows-msvc/msvc (Debug)	22m 23s
x86_64-unknown-linux-gnu/gcc (Release)	7m 37s
x86_64-pc-windows-msvc/msvc (Release)	13m 54s
i686-pc-windows-msvc/msvc (Debug)	24m 59s
aarch64-unknown-linux-gnu/gcc (Release)	6m 49s
x86_64-apple-darwin/clang (Debug)	24m 56s
	4h 35m 13s

Provide feedback