[IRGen] Bail on opt when seeing non-ABI field. #42106
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When analyzing a struct's layout to determine whether it contains a single non-empty field, bail upon encountering a field that is not ABI accessible. Previously, rather than bailing (though that was the intent), the field was ignored. The result was that struct's with a single non-empty field and any number of ABI inaccessible fields would be treated as if they only had a single non-empty field. Trouble ensued. rdar://79513293
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@swift-ci please test |
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When analyzing a struct's layout to determine whether it contains a single non-empty field, bail upon encountering a field that is not ABI accessible.
Previously, rather than bailing (though that was the intent), the field was ignored. The result was that structs with a single non-empty field and any number of ABI inaccessible fields would be treated as if they only had a single non-empty field. Trouble ensued.
rdar://79513293