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Summary: Based on * [[ https://support.amd.com/TechDocs/43479.pdf | AMD64 Architecture Programmer’s Manual Volume 6: 128-Bit and 256-Bit XOP and FMA4 Instructions ]], * [[ https://support.amd.com/TechDocs/24594.pdf | AMD64 Architecture Programmer’s Manual Volume 3: General-Purpose and System Instructions]], * https://en.wikipedia.org/wiki/XOP_instruction_set Appears to be only supported in AMD's 15h generation, so only in b**d**ver[1-4], for which currently llvm has no scheduling profiles. Reviewers: RKSimon, craig.topper, andreadb, spatel Reviewed By: RKSimon Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D48264 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335034 91177308-0d34-0410-b5e6-96231b3b80d8