[libclang] Expose ext_vector_type

[svenvh]

Summary

Expose ext_vector_type through the C API.

[Anastasia]

LGTM! Thanks!

bindings/python/clang/cindex.py

 TypeKind.OCLIMAGE2DMSAADEPTHRW = TypeKind(154)
 TypeKind.OCLIMAGE2DARRAYMSAADEPTHRW = TypeKind(155)
 TypeKind.OCLIMAGE3DRW = TypeKind(156)
 TypeKind.OCLSAMPLER = TypeKind(157)
 TypeKind.OCLEVENT = TypeKind(158)
 TypeKind.OCLQUEUE = TypeKind(159)
 TypeKind.OCLRESERVEID = TypeKind(160)
 
+TypeKind.EXTVECTOR = TypeKind(176)
+
 class RefQualifierKind(BaseEnumeration):
     """Describes a specific ref-qualifier of a type."""
 
     # The unique kind objects, indexed by id.
     _kinds = []
     _name_map = None
 
     def from_param(self):

include/clang-c/Index.h

  * The version constants for the libclang API.
  * CINDEX_VERSION_MINOR should increase when there are API additions.
  * CINDEX_VERSION_MAJOR is intended for "major" source/ABI breaking changes.
  *
  * The policy about the libclang API was always to keep it source and ABI
  * compatible, thus CINDEX_VERSION_MAJOR is expected to remain stable.
  */
 #define CINDEX_VERSION_MAJOR 0
-#define CINDEX_VERSION_MINOR 54
+#define CINDEX_VERSION_MINOR 55
 
 #define CINDEX_VERSION_ENCODE(major, minor) ( \
       ((major) * 10000)                       \
     + ((minor) *     1))
 
 #define CINDEX_VERSION CINDEX_VERSION_ENCODE( \
     CINDEX_VERSION_MAJOR,                     \
     CINDEX_VERSION_MINOR )
enum CXTypeKind {
   CXType_OCLIntelSubgroupAVCMceResult = 168,
   CXType_OCLIntelSubgroupAVCImeResult = 169,
   CXType_OCLIntelSubgroupAVCRefResult = 170,
   CXType_OCLIntelSubgroupAVCSicResult = 171,
   CXType_OCLIntelSubgroupAVCImeResultSingleRefStreamout = 172,
   CXType_OCLIntelSubgroupAVCImeResultDualRefStreamout = 173,
   CXType_OCLIntelSubgroupAVCImeSingleRefStreamin = 174,
 
-  CXType_OCLIntelSubgroupAVCImeDualRefStreamin = 175
+  CXType_OCLIntelSubgroupAVCImeDualRefStreamin = 175,
+
+  CXType_ExtVector = 176
 };
 
 /**
  * Describes the calling convention of a function type
  */
 enum CXCallingConv {
   CXCallingConv_Default = 0,
   CXCallingConv_C = 1,

test/Index/opencl-types.cl

void kernel testFloatTypes() {
   half4 vectorHalf;
   float scalarFloat;
   float4 vectorFloat;
   double scalarDouble;
   double4 vectorDouble;
 }
 
 // CHECK: VarDecl=scalarHalf:11:8 (Definition){{( \(invalid\))?}} [type=half] [typekind=Half] [isPOD=1]
-// CHECK: VarDecl=vectorHalf:12:9 (Definition) [type=half4] [typekind=Typedef] [canonicaltype=half __attribute__((ext_vector_type(4)))] [canonicaltypekind=Unexposed] [isPOD=1]
+// CHECK: VarDecl=vectorHalf:12:9 (Definition) [type=half4] [typekind=Typedef] [canonicaltype=half __attribute__((ext_vector_type(4)))] [canonicaltypekind=ExtVector] [isPOD=1]
 // CHECK: VarDecl=scalarFloat:13:9 (Definition) [type=float] [typekind=Float] [isPOD=1]
-// CHECK: VarDecl=vectorFloat:14:10 (Definition) [type=float4] [typekind=Typedef] [canonicaltype=float __attribute__((ext_vector_type(4)))] [canonicaltypekind=Unexposed] [isPOD=1]
+// CHECK: VarDecl=vectorFloat:14:10 (Definition) [type=float4] [typekind=Typedef] [canonicaltype=float __attribute__((ext_vector_type(4)))] [canonicaltypekind=ExtVector] [isPOD=1]
 // CHECK: VarDecl=scalarDouble:15:10 (Definition){{( \(invalid\))?}} [type=double] [typekind=Double] [isPOD=1]
-// CHECK: VarDecl=vectorDouble:16:11 (Definition){{( \(invalid\))?}} [type=double4] [typekind=Typedef] [canonicaltype=double __attribute__((ext_vector_type(4)))] [canonicaltypekind=Unexposed] [isPOD=1]
+// CHECK: VarDecl=vectorDouble:16:11 (Definition){{( \(invalid\))?}} [type=double4] [typekind=Typedef] [canonicaltype=double __attribute__((ext_vector_type(4)))] [canonicaltypekind=ExtVector] [isPOD=1]
 
 #pragma OPENCL EXTENSION cl_khr_gl_msaa_sharing : enable
 
 void kernel OCLImage1dROTest(read_only image1d_t scalarOCLImage1dRO);
 void kernel OCLImage1dArrayROTest(read_only image1d_array_t scalarOCLImage1dArrayRO);
 void kernel OCLImage1dBufferROTest(read_only image1d_buffer_t scalarOCLImage1dBufferRO);
 void kernel OCLImage2dROTest(read_only image2d_t scalarOCLImage2dRO);
 void kernel OCLImage2dArrayROTest(read_only image2d_array_t scalarOCLImage2dArrayRO);

tools/libclang/CXType.cpp

switch (TP->getTypeClass()) {
     TKCASE(ObjCTypeParam);
     TKCASE(FunctionNoProto);
     TKCASE(FunctionProto);
     TKCASE(ConstantArray);
     TKCASE(IncompleteArray);
     TKCASE(VariableArray);
     TKCASE(DependentSizedArray);
     TKCASE(Vector);
+    TKCASE(ExtVector);
     TKCASE(MemberPointer);
     TKCASE(Auto);
     TKCASE(Elaborated);
     TKCASE(Pipe);
     TKCASE(Attributed);
     default:
       return CXType_Unexposed;
   }
switch (K) {
     TKIND(ObjCTypeParam);
     TKIND(FunctionNoProto);
     TKIND(FunctionProto);
     TKIND(ConstantArray);
     TKIND(IncompleteArray);
     TKIND(VariableArray);
     TKIND(DependentSizedArray);
     TKIND(Vector);
+    TKIND(ExtVector);
     TKIND(MemberPointer);
     TKIND(Auto);
     TKIND(Elaborated);
     TKIND(Pipe);
     TKIND(Attributed);
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) TKIND(Id);
 #include "clang/Basic/OpenCLImageTypes.def"
 #undef IMAGE_TYPE
case Type::VariableArray:
       ET = cast<VariableArrayType> (TP)->getElementType();
       break;
     case Type::DependentSizedArray:
       ET = cast<DependentSizedArrayType> (TP)->getElementType();
       break;
     case Type::Vector:
       ET = cast<VectorType> (TP)->getElementType();
       break;
+    case Type::ExtVector:
+      ET = cast<ExtVectorType>(TP)->getElementType();
+      break;
     case Type::Complex:
       ET = cast<ComplexType> (TP)->getElementType();
       break;
     default:
       break;
     }
   }
   return MakeCXType(ET, GetTU(CT));
 }
 
 long long clang_getNumElements(CXType CT) {
   long long result = -1;
   QualType T = GetQualType(CT);
   const Type *TP = T.getTypePtrOrNull();
 
   if (TP) {
     switch (TP->getTypeClass()) {
     case Type::ConstantArray:
       result = cast<ConstantArrayType> (TP)->getSize().getSExtValue();
       break;
     case Type::Vector:
       result = cast<VectorType> (TP)->getNumElements();
       break;
+    case Type::ExtVector:
+      result = cast<ExtVectorType>(TP)->getNumElements();
+      break;
     default:
       break;
     }
   }
   return result;
 }
 
 CXType clang_getArrayElementType(CXType CT) {