[LLVMdev] LLVM ARM VMLA instruction

[Kay Tiong Khoo]

> "-ffp-contract=fast" is needed

Correct - clang is different than gcc, icc, msvc, xlc, etc. on this. Still
haven't seen any explanation for how this is better though...

http://llvm.org/bugs/show_bug.cgi?id=17188
http://llvm.org/bugs/show_bug.cgi?id=17211


On Wed, Dec 18, 2013 at 6:02 AM, Tim Northover <t.p.northover at gmail.com>wrote:

> > I believe that's the NEON VMLA, not the VFP one.
>
> Turns out I was misreading the assembly. I wish "vmla" and "vfma"
> weren't so similar-looking.
>
> For Suyog that means the option "-ffp-contract=fast" is needed to get
> vfma when needed. Sorry about the bad information earlier.
>
> Cheers.
>
> Tim.
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