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Commit f903a447 authored by Saleem Abdulrasool's avatar Saleem Abdulrasool
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MCAsmParser: support required parameters

This enhances the macro parser to parse and handle parameter qualifications,
which is needed to support required formal parameters in macro definitions.  A
required parameter may not be defaulted (though providing a default value is
accepted with a warning).  This improves GAS compatibility.

Partially addresses PR9248.

llvm-svn: 201630
parent a08585b2
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