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

[Hal Finkel via llvm-commits]

hfinkel added a comment.

In the past, we've been comfortable leaving this as an open known issue, especially given that the semantics of PPC long double are not IEEE anyway - the real fix involves creating an APFloat-based double-double implementation which can be used to evaluate constants. How important is it that we make this kind of change now?


https://reviews.llvm.org/D24011