[PATCH] D56596: Enable fma formation for fp16 on x86 and aarch64

[Sjoerd Meijer via Phabricator via llvm-commits]

SjoerdMeijer added a comment.

> The AArch64 side LGTM. Also adding Oliver and Sjoerd as they worked on FP16 side as well, in case they have any thoughts.

I did a same/similar exercise not so long ago for AArch32, M-cores (see https://reviews.llvm.org/D53314). I haven't looked into this for AArch64, but anyway, what I wanted to say is that checking the software optimisation guides is the thing to do: the A55 is also a v8.2 core with FP16. It has a public guide here: http://infocenter.arm.com/help/topic/com.arm.doc.epm128372/arm_cortex_a55_software_optimization_guide_v2.pdf


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https://reviews.llvm.org/D56596