[PATCH] D57504: RFC: Prototype & Roadmap for vector predication in LLVM

Wed Apr 17 11:21:22 PDT 2019

andrew.w.kaylor added a comment.

In D57504#1469847 <https://reviews.llvm.org/D57504#1469847>, @simoll wrote:

> According to the LLVM langref, `"fpexcept.ignore"` seems to be the right option for exceptions whereas there is no `"round.permissive"` option for the rounding behavior. Abusing rmInvalid/ebInvalid seems hacky.

If you use "round.tonearest" that will get you the same semantics as the non-constrained version. The optimizer assumes round-to-nearest by default.

Repository:
  rL LLVM

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https://reviews.llvm.org/D57504