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66c1c008
2020 Mar 03
5
Should rint and nearbyint be always constrained?
>
> One concern with replacing llvm.rint and llvm.nearbyint with
> llvm.roundeven makes it difficult to turn back into a libcall if the
> backend doesn't have an instruction for it. You can't just call the
> roundeven library function since that wouldn't exist in older libm
> implementations. So ideally you would know which function was originally
> used in the