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Thanks! That’s probably close enough for practical purposes. I looked at the overrides on various targets, and they all return true if the FMA hardware exists. - Arch From: Jingyue Wu [mailto:jingyue at google.com] Sent: Wednesday, December 10, 2014 2:56 PM To: Robison, Arch Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] Best way for JIT to query whether llvm.fma.* is fast? Does