[5.7] fix a crash/hang in SimplifyCFG. #58443
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Jump threading in an unreachable CFG region can lead to a crash (in an assert compiler) or hang (in an no-assert compiler) in `ValueBase::replaceAllUsesWith`. Unfortunately I couldn't come up with an isolated SIL test case. rdar://92267349
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@swift-ci test |
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Cherry-pick of #58387 |
tbkka
approved these changes
May 3, 2022
AnthonyLatsis
added
🍒 release cherry pick
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Jump threading in an unreachable CFG region can lead to a crash (in an assert compiler) or hang (in an no-assert compiler) in
ValueBase::replaceAllUsesWith.Unfortunately I couldn't come up with an isolated SIL test case.
rdar://92267349