JIT

GH-131238: More refactoring of core header files #2941

Job	Run time
Interpreter (Debug)	8m 54s
Free-Threaded (Debug) (19)	17m 21s
i686-pc-windows-msvc/msvc (Debug)	20m 37s
i686-pc-windows-msvc/msvc (Release)	12m 12s
x86_64-pc-windows-msvc/msvc (Debug)	21m 5s
x86_64-pc-windows-msvc/msvc (Release)	12m 10s
aarch64-pc-windows-msvc/msvc (Debug)	4m 57s
aarch64-pc-windows-msvc/msvc (Release)	7m 38s
x86_64-apple-darwin/clang (Debug)	15m 39s
x86_64-apple-darwin/clang (Release)	10m 7s
aarch64-apple-darwin/clang (Debug)	9m 7s
aarch64-apple-darwin/clang (Release)	8m 44s
x86_64-unknown-linux-gnu/gcc (Debug)	10m 21s
x86_64-unknown-linux-gnu/gcc (Release)	6m 30s
aarch64-unknown-linux-gnu/gcc (Debug)	10m 26s
aarch64-unknown-linux-gnu/gcc (Release)	7m 2s
	3h 2m 50s

Provide feedback