[PATCH] D24011: [ConstantFold] Add a flag for ppc_fp128 constant folding, since APFloat doesn't support double-double semantic

[David Majnemer via llvm-commits]

majnemer added a subscriber: majnemer.
majnemer added a comment.

This looks super suspicious.  Why can't we fix this for real in APFloat?

I'd be more comfortable with a patch that didn't attempt to fold in the face of PPCDoubleDouble without a flag to control it.


https://reviews.llvm.org/D24011