[LLVMdev] ARM NEON VMUL.f32 issue
renato.golin at linaro.org
Tue Mar 19 14:39:04 PDT 2013
On 19 March 2013 21:13, Jim Grosbach <grosbach at apple.com> wrote:
> You're right. Strictly speaking, using NEON for scalar floating point
> isn't completely safe for exactly this reason (also NaNs, IIRC). We
> generally do it anyway because on common cores (cortex-a8) VFP is pretty
> terrible and the NEON approximation is correct for the vast majority of
> use-cases that people care about. Yes, that's cutting some corners. Would
> you mind making this change depend on platform? Darwin should continue to
> use NEON by default for these operations.
Thanks Jim, noted about Darwin, I won't touch it. ;)
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