JIT

gh-131798: JIT: Narrow the return type of `isinstance` for some known arguments #3450

Job	Run time
Interpreter (Debug)	9m 58s
i686-pc-windows-msvc/msvc (Debug)	24m 19s
i686-pc-windows-msvc/msvc (Release)	15m 3s
x86_64-pc-windows-msvc/msvc (Debug)	24m 29s
x86_64-pc-windows-msvc/msvc (Release)	15m 21s
aarch64-pc-windows-msvc/msvc (Debug)	22m 58s
aarch64-pc-windows-msvc/msvc (Release)	21m 26s
x86_64-apple-darwin/clang (Debug)	16m 13s
x86_64-apple-darwin/clang (Release)	13m 33s
aarch64-apple-darwin/clang (Debug)	11m 26s
aarch64-apple-darwin/clang (Release)	9m 27s
x86_64-unknown-linux-gnu/gcc (Debug)	11m 28s
x86_64-unknown-linux-gnu/gcc (Release)	6m 37s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 51s
aarch64-unknown-linux-gnu/gcc (Release)	6m 37s
	3h 36m 46s

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