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[Bug target/71659] New: _xgetbv intrinsic missing


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71659

            Bug ID: 71659
           Summary: _xgetbv intrinsic missing
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: andi-gcc at firstfloor dot org
  Target Milestone: ---

icc and microsoft have a _xgetbv intrinsic for the XGETBV instruction, which is
needed to check if AVX or MPX are supported by the kernel.

gcc is missing an intrinsic for that, so everyone has to write inline
assembler. Should add one.

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