JIT

gh-115999: Specialize `LOAD_ATTR` for instance and class receivers in free-threaded builds #2406

Job	Run time
Interpreter (Debug)	7m 39s
Free-Threaded (Debug) (19)	12m 15s
i686-pc-windows-msvc/msvc (Debug)	18m 8s
i686-pc-windows-msvc/msvc (Release)	12m 9s
x86_64-pc-windows-msvc/msvc (Debug)	18m 11s
x86_64-pc-windows-msvc/msvc (Release)	11m 30s
aarch64-pc-windows-msvc/msvc (Debug)	3m 54s
aarch64-pc-windows-msvc/msvc (Release)	5m 49s
x86_64-apple-darwin/clang (Debug)	12m 50s
x86_64-apple-darwin/clang (Release)	8m 23s
aarch64-apple-darwin/clang (Debug)	8m 50s
aarch64-apple-darwin/clang (Release)	8m 41s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 29s
x86_64-unknown-linux-gnu/gcc (Release)	5m 39s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 24s
aarch64-unknown-linux-gnu/gcc (Release)	7m 7s
	2h 36m 58s

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