JIT

GH-138245: Perform boolean guards by testing a single bit, rather than a full pointer comparison. #4996

Job	Run time
Interpreter (Debug)	10m 54s
JIT with tail calling interpreter (21)	4m 24s
Free-Threaded (Debug) (21)	17m 22s
JIT without optimizations (Debug) (21)	12m 50s
x86_64-pc-windows-msvc/msvc (Debug)	25m 30s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 22s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 47s
aarch64-apple-darwin/clang (Release)	13m 21s
aarch64-pc-windows-msvc/msvc (Debug)	22m 34s
i686-pc-windows-msvc/msvc (Release)	14m 52s
i686-pc-windows-msvc/msvc (Debug)	26m 47s
aarch64-pc-windows-msvc/msvc (Release)	18m 23s
aarch64-apple-darwin/clang (Debug)	12m 6s
x86_64-apple-darwin/clang (Release)	20m 28s
x86_64-apple-darwin/clang (Debug)	41m 20s
aarch64-unknown-linux-gnu/gcc (Release)	6m 53s
x86_64-unknown-linux-gnu/gcc (Release)	8m 51s
x86_64-pc-windows-msvc/msvc (Release)	13m 21s
	4h 51m 5s

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