[PATCH] D17141: [ARM] Adding IEEE-754 SIMD detection to loop vectorizer

[Renato Golin via llvm-commits]

rengolin added a comment.

> Darwin, as a policy, maps all floating point onto the NEON unit.  As you point out, this discards some elements of IEEE conformance, with subnormal support being the one that is typically brought.  Darwin documents this as the correct behavior of the platform, even without -ffast-math.


Ok, a platform choice, not hardware support.

I understand that enabling fast-math will break other promises, so I agree that an extra subnormal property to the target, depending on platform is needed.

I'll work on that.

Thanks!
--renato


Repository:
  rL LLVM

http://reviews.llvm.org/D17141