JIT

gh-115999: Specialize `LOAD_ATTR` for instance and class receivers in free-threaded builds #2459

Job	Run time
Interpreter (Debug)	7m 55s
Free-Threaded (Debug) (19)	12m 5s
i686-pc-windows-msvc/msvc (Debug)	17m 58s
i686-pc-windows-msvc/msvc (Release)	12m 0s
x86_64-pc-windows-msvc/msvc (Debug)	17m 38s
x86_64-pc-windows-msvc/msvc (Release)	10m 24s
aarch64-pc-windows-msvc/msvc (Debug)	4m 1s
aarch64-pc-windows-msvc/msvc (Release)	6m 25s
x86_64-apple-darwin/clang (Debug)	12m 44s
x86_64-apple-darwin/clang (Release)	7m 42s
aarch64-apple-darwin/clang (Debug)	8m 55s
aarch64-apple-darwin/clang (Release)	8m 30s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 29s
x86_64-unknown-linux-gnu/gcc (Release)	5m 40s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 30m 12s
aarch64-unknown-linux-gnu/gcc (Release)	8m 31s
	3h 59m 9s

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