Intel® ISA Extensions
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FMA now an extension of AVX?

gabest
Beginner
‎08-27-2008 11:58 PM
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The madd/sub instructionswere one of the new killer features I was waiting for, but now they are gone from the java intrinsics guide(still present in april's release)andrefered to as an extension to AVX in thepdf. Was this feature cut from the first iteration of avx cpus or will it just have a separate cpuid flag?
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Quoc-Thai_L_Intel
Employee
‎09-08-2008 09:32 AM
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Hi,

Here is a response from our engineering team: FMA are not part of the Sandy Bridge processor. They will be present in a future processor and will have a separate feature flag.

-Thai

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