Stephen Peckham 282da83756 [XCOFF][AIX] Issue an error when specifying an alias for a common symbol ...

Summary:

There is no support in XCOFF for labels on common symbols. Therefore, an alias for a common symbol is not supported. Issue an error in the front end when an aliasee is a common symbol. Issue a similar error in the back end in case an IR specifies an alias for a common symbol.

Reviewed by: hubert.reinterpretcast, DiggerLin

Differential Revision:  https://reviews.llvm.org/D158739

2023-08-31 11:43:47 -04:00

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