Nate Chandler da5888fd3f [IRGen] Bail on opt when seeing non-ABI field. ...

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

2022-03-30 17:55:39 -07:00

168 B

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