[WIP] Implement CFI #293

Job	Run time
linux-x86-deny	43s
linux-x86-ci-generated	12s
linux-x86-ci (ubuntu-latest)	1m 24s
linux-x86-ci (ubuntu-24.04-arm)	1m 24s
linux-native-test-spawn (ubuntu-24.04-arm)	52s
linux-arm-ci-asm	9m 37s
macos-x86-ci-asm	13m 14s
linux-native-ci-asm (ubuntu-24.04-arm)	13m 15s
linux-arm-test-suite	6m 8s
linux-fuzz	3m 48s
linux-native-ci-asm (ubuntu-latest)	11m 9s
windows-x86-ci-asm	19m 58s
linux-native-test-spawn (ubuntu-latest)	40s
linux-native-test-suite (ubuntu-24.04-arm)	2m 37s
linux-native-ci-asm-chaos (ubuntu-latest)	13m 33s
linux-native-ci-asm-chaos (ubuntu-24.04-arm)	9m 24s
linux-native-test-suite (ubuntu-latest)	2m 23s
	1h 50m 21s

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