[PATCH] D108917: [PowerPC] Define __powerpc and __PPC macros

[Nemanja Ivanovic via Phabricator via cfe-commits]

nemanjai added a comment.

In D108917#2974490 <https://reviews.llvm.org/D108917#2974490>, @cebowleratibm wrote:

> I'd like to see the rationale for adding these forms of the macros in the review and also in the extended commit message.  These forms are being added primarily because the AIX XL compiler documented and defined them.  The patch itself looks fine.

If XL only defines this on AIX, so should Clang. They only go into this location if XL defines them on both Linux and AIX.


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