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AMD and recently Intel both moving to LLVM is a good step in that direction IMO. LLVM also already comes with a dispatcher, so hopefully they aren’t going to… d
by arthur2e5 5y ago
AMD and recently Intel both moving to LLVM is a good step in that direction IMO. LLVM also already comes with a dispatcher, so hopefully they aren’t going to… do it again. Personally I’m more excited about being able to port __attribute__ rich code more easily.
(IIRC Intel has tuned down the Cripple AMD thing in MKL around late 2020 by providing a specialized Zen code path. It was slower than what you get with the detection backdoor, but only slightly.)