[ARCOpts] Don't move releases before landingpads #74451
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kubamracek
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gottesmm,
rauhul,
aschwaighofer,
eeckstein and
meg-gupta
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@swift-ci please test |
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Turns out that we allowed moving swift_release calls before landingpad instructions, resulting in invalid IR, per LangRef https://llvm.org/docs/LangRef.html#landingpad-instruction:
See the attached testcase which fails without the fix in
performLocalReleaseMotion.rdar://122874601