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From: Richard Miller <9fans@hamnavoe.com> Date: Fri, 6 Dec 2019 13:22:42 +0000 In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-BlackCat-Spam-Score: 1 X-Spam-Status: No, score=0.2 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 82332f46-182b-11ea-a618-e9a5e19ade74 > is it worth using vfp when neon is around? Plan 9 arm source uses "vfp" as a generic term to mean modern hardware floating point instruction set (as opposed to the old arm7500 instruction set, which I suspect has always been purely emulated since processors implementing this set were quite rare). No use has been made in Plan 9 (as far as I know) of the vector extensions which are the "v" part of vfp. I think the neon instruction set is a superset of the vfp set which 5l generates, so using vfp doesn't preclude something like a vector library with neon support.