JIT Sparse Function Table, by riperiperi #121

Job	Run time
pr_build / macOS Universal (Debug)	6m 16s
pr_build / win-x64 (Debug)	8m 7s
pr_build / macOS Universal (Release)	5m 36s
pr_build / linux-x64 (Debug)	4m 39s
pr_build / linux-arm64 (Debug)	2m 37s
pr_build / osx-x64 (Debug)	4m 11s
pr_build / win-x64 (Release)	7m 21s
pr_build / linux-x64 (Release)	3m 53s
pr_build / linux-arm64 (Release)	2m 24s
pr_build / osx-x64 (Release)	3m 40s
	48m 44s

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