[PATCH] D45616: [X86] Lower _mm[256|512]_cmp[.]_mask intrinsics to native llvm IR

[Eli Friedman via Phabricator via cfe-commits]

efriedma added a comment.

> It seems you were well aware that you are changing the semantics of FP operation here by ignoring the signaling/quiet portion of the immediate.

There's ongoing work to support code that accesses the floating point environment (see http://llvm.org/docs/LangRef.html#constrained-floating-point-intrinsics).  There isn't any way to turn it on in clang yet, though.  And until that's implemented, LLVM can trigger arbitrary floating-point exceptions anywhere in your code, so there's no point to trying to generate a "quiet" compare.


Repository:
  rC Clang

https://reviews.llvm.org/D45616