[llvm-bugs] [Bug 28250] New: clang-cl does not consider __m128 to be a struct type

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28250

            Bug ID: 28250
           Summary: clang-cl does not consider __m128 to be a struct type
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: resistor at mac.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

MSVC treats __m128 as a struct type, and depends on that in DirectXMath.h. 
clang-cl doesn't, which breaks DirectX apps.

For example:

1>C:\Program Files (x86)\Windows
Kits\10\Include\10.0.10586.0\um/DirectXMath.h(372,29): error : overloaded
'operator/=' must have at least one parameter of class or enumeration type
1>  XMVECTOR&   XM_CALLCONV     operator/= (XMVECTOR& V1, FXMVECTOR V2);


1>C:\Program Files (x86)\Windows
Kits\10\Include\10.0.10586.0\um/DirectXMathVector.inl(412,13): error : member
reference base type 'FXMVECTOR' (aka 'const __m128') is not a structure or
union
1>      return V.m128_f32[i];

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