JIT

GH-128685: Specialize (rather than quicken) LOAD_CONST into LOAD_CONST_[IM]MORTAL #2448

Job	Run time
Interpreter (Debug)	8m 2s
Free-Threaded (Debug) (19)	12m 25s
i686-pc-windows-msvc/msvc (Debug)	19m 19s
i686-pc-windows-msvc/msvc (Release)	10m 39s
x86_64-pc-windows-msvc/msvc (Debug)	18m 3s
x86_64-pc-windows-msvc/msvc (Release)	11m 30s
aarch64-pc-windows-msvc/msvc (Debug)	5m 28s
aarch64-pc-windows-msvc/msvc (Release)	6m 57s
x86_64-apple-darwin/clang (Debug)	16m 18s
x86_64-apple-darwin/clang (Release)	9m 15s
aarch64-apple-darwin/clang (Debug)	9m 33s
aarch64-apple-darwin/clang (Release)	8m 26s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 48s
x86_64-unknown-linux-gnu/gcc (Release)	5m 36s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 37s
aarch64-unknown-linux-gnu/gcc (Release)	5m 42s
	2h 43m 38s

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