[OpenCL] Add support of cl_intel_device_side_avc_motion_estimation extension

[AlexeySachkov]

Summary

Documentation can be found at https://www.khronos.org/registry/OpenCL/extensions/intel/cl_intel_device_side_avc_motion_estimation.txt

Patch by Kristina Bessonova

[Anastasia]

include/clang/Basic/OpenCLExtensionTypes.def

2

I am confused about the purpose of this file. Is it supposed to contain intel extension specific types or generally OpenCL types?

28

From the specification of this extension I can't quite see if these types have to be in Clang instead of the header. Can you please elaborate on any example where it wouldn't be possible for this type to be declared in the header using the technique explained in:
https://clang.llvm.org/docs/UsersManual.html#opencl-extensions

lib/Headers/opencl-c.h

16197

Should we be using:

#pragma OPENCL EXTENSION my_ext : begin

then the user can get correct diagnostics that the functions can only be used once the extension is enabled.

[AlexeySachkov]

include/clang/Basic/OpenCLExtensionTypes.def

2

It is supposed to contain any opaque types from any OpenCL extension

28

We cannot define these types in header because their layout is not defined in specification, i.e. all of these types are opaque

[Anastasia]

include/clang/Basic/OpenCLExtensionTypes.def

28

This is not the reason to add functionality to Clang. You can easily sort such things with target specific headers or even general headers (see ndrange_t for example). Spec doesn't have to describe everything. The question is whether there is something about those types that can't be handled using standard include mechanisms. Usually it's prohibited behaviors that can't be represented with such mechanisms. Like if some operations have to be disallowed or allowed (since in OpenCL C you can't define user defined operators) with the types.

I think the trend is to avoid adding complexity into Clang, unless there is no other way to implement some feature correctly.

[AlexeySotkin]

include/clang/Basic/OpenCLExtensionTypes.def

28

Major part of these types must support initialization only by zero. intel_sub_group_avc_mce_payload_t and intel_sub_group_avc_mce_result_t must support initialization only via special builtins defined in the spec. Corresponding errors must be reported. I think we can't implement this behavior using standard include mechanism, can we?

Possible value of the additional complexity, except builtin declaration, is that the patch is quite generic. So next time anyone wants to implement an extension with a type restrictions which can't be handled with the include mechanism, all that they needs to do is to modify this single file.

[Anastasia]

include/clang/Basic/OpenCLExtensionTypes.def

28

Major part of these types must support initialization only by zero. intel_sub_group_avc_mce_payload_t and intel_sub_group_avc_mce_result_t must support initialization only via special builtins defined in the spec. Corresponding errors must be reported. I think we can't implement this behavior using standard include mechanism, can we?

Are these restrictions not mentioned in the specification document then? Or is it not the final version yet (not sure since it says First Draft). Do you plan to add the diagnostics for the restrictions afterwards? It doesn't have to be in the same patch, but just checking because if not I don't think it would make sense to go this route.

Possible value of the additional complexity, except builtin declaration, is that the patch is quite generic. So next time anyone wants to implement an extension with a type restrictions which can't be handled with the include mechanism, all that they needs to do is to modify this single file.

It seems reasonable to implement this extra mechanism, provided that there are more of similar use cases.

Btw, considering that there are some modifications to core language spec restriction sections in this document, does this extension invalidate or change any core language rules that might affect parsing/diagnostics?

[AlexeySachkov]

include/clang/Basic/OpenCLExtensionTypes.def

28

Are these restrictions not mentioned in the specification document then? Or is it not the final version yet (not sure since it says First Draft).

Current version of spec is not very clear regarding all these restrictions. I'm working with authors to get updated version published at Khronos registry.

Do you plan to add the diagnostics for the restrictions afterwards?

Yes, I'm going to update this patch and add some tests for Sema

Btw, considering that there are some modifications to core language spec restriction sections in this document, does this extension invalidate or change any core language rules that might affect parsing/diagnostics?

AFAIK extension describes a new one kind of sampler and initialization rules for it. This new sampler reusing existing sampler_t type, but value of initializer macro doesn't correspond to existing OpenCL spec: next version of patch will hide one warning message:

if (FilterMode != 1 && FilterMode != 2 &&
  !S.getOpenCLOptions().isEnabled(
      "cl_intel_device_side_avc_motion_estimation"))
S.Diag(Kind.getLocation(),
       diag::warn_sampler_initializer_invalid_bits)
       << "Filter Mode";

[AlexeySachkov]

Updated patch with new functionality and tests

[Anastasia]

include/clang/AST/OperationKinds.def

325

I am wondering if we could potentially unify all of those ZeroToOCL* into one cast type... and also do similar for all of the zero init patterns.

include/clang/AST/Type.h

6471

I guess this define is not needed here.

lib/CodeGen/CGOpenCLRuntime.cpp

68

I think more generic approach would be to pass AddrSpc and then targets can override getOpenCLTypeAddrSpace putting address space that is needed.

lib/Headers/opencl-c.h

16196

I think we should guard this by

#ifdef cl_intel_device_side_avc_motion_estimation

so that it's not added for the targets that don't support this.

Also it might be worth adding a check for a function from this block into test/Headers/opencl-c-header.cl to verify that it's unavailable by default.

16320

Could this just be regular integer literal like the ones above?

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

2

Any reasons to separate into 2 clang calls? Could we tests both in one invocation of parsing.

14

Just 0 would work too?

27

Would it make sense to add a check for non-zero constant?

Also can you assign variables of intel_sub_group_avc_mce_payload_t type from the same type? Any other restrictions on assignment (i.e. w integer literals) and operations over these types?

55

This error message is probably not the best, but at least it's rejected. Some thing like
initializing ... with an expression of incompatible type would have been better. Not asking to do this change though...

58

Can you add something like:

= {1}

[AlexeySachkov]

Applied comments from Anastasia. Updated headers to conform with the latest spec

[AlexeySachkov]

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

14

Yes, it would

27

Also can you assign variables of intel_sub_group_avc_mce_payload_t type from the same type?

Yes, such assignment is allowed.

Any other restrictions on assignment (i.e. w integer literals)

All of these types can only be initialized using call to a special built-ins or using predefined macros like CLK_AVC_REF_RESULT_INITIALIZE_INTEL. Any other assignment should lead to an error.

I found that I'm able to assign variable of type intel_sub_group_avc_imc_payload_t to variable of type intel_sub_group_avc_mce_payload_t, so I will update the patch when I implement such diagnostic message.

and operations over these types?

Variables of these types can only be used as return values or arguments for built-in functions described in the specification. All other operations are restricted

[Anastasia]

It would be good to test your CIndex changes in test/Index/opencl-types.cl.

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

27

W/o the spec change it's really difficult to review properly. So are you testing 2 groups of types:

1. Init by zero in bar?
2. Init by builtin function in foo?

35

I am not sure it makes sense to iterate through all different types. You don't enumerate all of them and we don't do exhaustive testing in Clang tests anyway. I would just check integer literal and one other builtin type.

[AlexeySachkov]

Updated tests. Reverted usage of #pragma OPENCL EXTENSION my_ext : begin due to a failed LIT tests: test/Headers/opencl-c-header.cl

Test failed on the following RUN-line:

// Compile for OpenCL 2.0 for the first time. The module should change.                                                             
// RUN: %clang_cc1 -triple spir-unknown-unknown -O0 -emit-llvm -o - -cl-std=CL2.0 -finclude-default-header -fmodules -fimplicit-modu le-maps -fmodules-cache-path=%t -fdisable-module-hash -ftime-report %s 2>&1 | FileCheck --check-prefix=CHECK20 --check-prefix=CHECK- MOD %s

Clang crashes at the assertion in ASTReader::getGlobalSubmoduleID():

assert(I != M.SubmoduleRemap.end() && "Invalid index into submodule index remap");

[AlexeySachkov]

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

27

I would like to test:

1. foo: init by literal or variable, negative tests
2. far: init by other type or assignment between different types, negative tests
3. bar: init by special initializers from spec, positive tests

35

Simplified test a little bit.

[AlexeySotkin]

Ping

[Anastasia]

lib/Headers/opencl-c.h

16197

Would it be better to use begin/end instead of enable/disable?

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

16

Is there any point to have all these defines if they are all mapped to 0? I think using constant literals are easier for testing.

27

Ok, I see. Considering that the restirctions are not in the spec yet. I feel adding a comment describing initialization/assignment/operation restrictions for different types would be helpful here.

[AlexeySachkov]

Applied comments. Rebased to ToT

[AlexeySachkov]

lib/Headers/opencl-c.h

16197

Done, but https://reviews.llvm.org/D53200 have to be landed first to avoid failures in LIT tests

[Anastasia]

LGTM! Thanks!

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

6

Btw do you plan to implement this later:

All intel_sub_group_avc_* types can only be used as argument or return value of built-in functions defined in the extension.

[AlexeySotkin]

lib/Sema/SemaInit.cpp

8093

isOCLIntelSubgroupAVCType) -> isOCLIntelSubgroupAVCType())

[AlexeySachkov]

Updated opencl-c.h header: fixed typos in built-in declarations. Applied comment from Alexey

[AlexeySachkov]

Rebased to ToT.

[asavonic]

I reverted this change in r346338, as it breaks Index/opencl-types.cl LIT test. See http://lab.llvm.org:8011/builders/clang-ppc64le-linux/builds/21503/steps/ninja%20check%201/logs/FAIL%3A%20Clang%3A%3Aopencl-types.cl

[AlexeySachkov]

Fixed issue in test/Index/opencl-types.cl

[asavonic]

Committed in r346392.

include/clang-c/Index.h

enum CXTypeKind {
   CXType_OCLImage3dRW = 156,
   CXType_OCLSampler = 157,
   CXType_OCLEvent = 158,
   CXType_OCLQueue = 159,
   CXType_OCLReserveID = 160,
 
   CXType_ObjCObject = 161,
   CXType_ObjCTypeParam = 162,
-  CXType_Attributed = 163
+  CXType_Attributed = 163,
+
+  CXType_OCLIntelSubgroupAVCMcePayload = 164,
+  CXType_OCLIntelSubgroupAVCImePayload = 165,
+  CXType_OCLIntelSubgroupAVCRefPayload = 166,
+  CXType_OCLIntelSubgroupAVCSicPayload = 167,
+  CXType_OCLIntelSubgroupAVCMceResult = 168,
+  CXType_OCLIntelSubgroupAVCImeResult = 169,
+  CXType_OCLIntelSubgroupAVCRefResult = 170,
+  CXType_OCLIntelSubgroupAVCSicResult = 171,
+  CXType_OCLIntelSubgroupAVCImeResultSingleRefStreamout = 172,
+  CXType_OCLIntelSubgroupAVCImeResultDualRefStreamout = 173,
+  CXType_OCLIntelSubgroupAVCImeSingleRefStreamin = 174,
+
+  CXType_OCLIntelSubgroupAVCImeDualRefStreamin = 175
 };
 
 /**
  * Describes the calling convention of a function type
  */
 enum CXCallingConv {
   CXCallingConv_Default = 0,
   CXCallingConv_C = 1,

include/clang/AST/ASTContext.h

public:
   CanQualType ObjCBuiltinIdTy, ObjCBuiltinClassTy, ObjCBuiltinSelTy;
   CanQualType ObjCBuiltinBoolTy;
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   CanQualType SingletonId;
 #include "clang/Basic/OpenCLImageTypes.def"
   CanQualType OCLSamplerTy, OCLEventTy, OCLClkEventTy;
   CanQualType OCLQueueTy, OCLReserveIDTy;
   CanQualType OMPArraySectionTy;
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  CanQualType Id##Ty;
+#include "clang/Basic/OpenCLExtensionTypes.def"
 
   // Types for deductions in C++0x [stmt.ranged]'s desugaring. Built on demand.
   mutable QualType AutoDeductTy;     // Deduction against 'auto'.
   mutable QualType AutoRRefDeductTy; // Deduction against 'auto &&'.
 
   // Decl used to help define __builtin_va_list for some targets.
   // The decl is built when constructing 'BuiltinVaListDecl'.
   mutable Decl *VaListTagDecl;

include/clang/AST/OperationKinds.def

 // Convert a builtin function to a function pointer; only allowed in the
 // callee of a call expression.
 CAST_OPERATION(BuiltinFnToFnPtr)
 
 // Convert a zero value for OpenCL event_t initialization.
 CAST_OPERATION(ZeroToOCLEvent)
 
 // Convert a zero value for OpenCL queue_t initialization.
 CAST_OPERATION(ZeroToOCLQueue)
 
 // Convert a pointer to a different address space.
 CAST_OPERATION(AddressSpaceConversion)
 
 // Convert an integer initializer to an OpenCL sampler.
 CAST_OPERATION(IntToOCLSampler)
 
+// Convert a zero value to opaque data types defined in the
+// cl_intel_device_sie_avc_motion_estimation OpenCL extension.
+//   intel_sub_group_avc_ime_payload_t = 0x0;
+CAST_OPERATION(ZeroToOCLIntelSubgroupAVCType)
+
 //===- Binary Operations  -------------------------------------------------===//
 // Operators listed in order of precedence.
 // Note that additions to this should also update the StmtVisitor class and
 // BinaryOperator::getOverloadedOperator.
 
 // [C++ 5.5] Pointer-to-member operators.
 BINARY_OPERATION(PtrMemD, ".*")
 BINARY_OPERATION(PtrMemI, "->*")

include/clang/AST/Type.h

#include "clang/Basic/OpenCLImageTypes.def"
   bool isImageType() const;                     // Any OpenCL image type
 
   bool isSamplerT() const;                      // OpenCL sampler_t
   bool isEventT() const;                        // OpenCL event_t
   bool isClkEventT() const;                     // OpenCL clk_event_t
   bool isQueueT() const;                        // OpenCL queue_t
   bool isReserveIDT() const;                    // OpenCL reserve_id_t
 
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  bool is##Id##Type() const;
+#include "clang/Basic/OpenCLExtensionTypes.def"
+  // Type defined in cl_intel_device_side_avc_motion_estimation OpenCL extension
+  bool isOCLIntelSubgroupAVCType() const;
+  bool isOCLExtOpaqueType() const;              // Any OpenCL extension type
+
   bool isPipeType() const;                      // OpenCL pipe type
   bool isOpenCLSpecificType() const;            // Any OpenCL specific type
 
   /// Determines if this type, which must satisfy
   /// isObjCLifetimeType(), is implicitly __unsafe_unretained rather
   /// than implicitly __strong.
   bool isObjCARCImplicitlyUnretainedType() const;
 

 /// This class is used for builtin types like 'int'.  Builtin
 /// types are always canonical and have a literal name field.
 class BuiltinType : public Type {
 public:
   enum Kind {
 // OpenCL image types
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) Id,
 #include "clang/Basic/OpenCLImageTypes.def"
+// OpenCL extension types
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) Id,
+#include "clang/Basic/OpenCLExtensionTypes.def"
 // All other builtin types
 #define BUILTIN_TYPE(Id, SingletonId) Id,
 #define LAST_BUILTIN_TYPE(Id) LastKind = Id
 #include "clang/AST/BuiltinTypes.def"
   };
 
 private:
   friend class ASTContext; // ASTContext creates these.

 #include "clang/Basic/OpenCLImageTypes.def"
       false; // end boolean or operation
 }
 
 inline bool Type::isPipeType() const {
   return isa<PipeType>(CanonicalType);
 }
 
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  inline bool Type::is##Id##Type() const { \
+    return isSpecificBuiltinType(BuiltinType::Id); \
+  }
+#include "clang/Basic/OpenCLExtensionTypes.def"
+
+inline bool Type::isOCLIntelSubgroupAVCType() const {
+#define INTEL_SUBGROUP_AVC_TYPE(ExtType, Id) \
+  isOCLIntelSubgroupAVC##Id##Type() ||
+  return
+#include "clang/Basic/OpenCLExtensionTypes.def"
+    false; // end of boolean or operation
+}
+
+inline bool Type::isOCLExtOpaqueType() const {
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) is##Id##Type() ||
+  return
+#include "clang/Basic/OpenCLExtensionTypes.def"
+    false; // end of boolean or operation
+}
+
 inline bool Type::isOpenCLSpecificType() const {
   return isSamplerT() || isEventT() || isImageType() || isClkEventT() ||
-         isQueueT() || isReserveIDT() || isPipeType();
+         isQueueT() || isReserveIDT() || isPipeType() || isOCLExtOpaqueType();
 }
 
 inline bool Type::isTemplateTypeParmType() const {
   return isa<TemplateTypeParmType>(CanonicalType);
 }
 
 inline bool Type::isSpecificBuiltinType(unsigned K) const {
   if (const BuiltinType *BT = getAs<BuiltinType>())

include/clang/Basic/OpenCLExtensionTypes.def

+//===-- OpenCLExtensionTypes.def - Metadata about BuiltinTypes ------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//  This file extends builtin types database with OpenCL extension types.
+//  Custom code should define this macro:
+//    EXT_OPAQUE_TYPE(Name, Id, Ext)
+
+#ifdef EXT_OPAQUE_TYPE
+
+#ifndef INTEL_SUBGROUP_AVC_TYPE
+#define INTEL_SUBGROUP_AVC_TYPE(Name, Id) \
+  EXT_OPAQUE_TYPE(intel_sub_group_avc_##Name, OCLIntelSubgroupAVC##Id, \
+    cl_intel_device_side_avc_motion_estimation)
+#endif
+
+#endif
+
+#ifdef INTEL_SUBGROUP_AVC_TYPE
+INTEL_SUBGROUP_AVC_TYPE(mce_payload_t, McePayload)
+INTEL_SUBGROUP_AVC_TYPE(ime_payload_t, ImePayload)
+INTEL_SUBGROUP_AVC_TYPE(ref_payload_t, RefPayload)
+INTEL_SUBGROUP_AVC_TYPE(sic_payload_t, SicPayload)
+INTEL_SUBGROUP_AVC_TYPE(mce_result_t, MceResult)
+INTEL_SUBGROUP_AVC_TYPE(ime_result_t, ImeResult)
+INTEL_SUBGROUP_AVC_TYPE(ref_result_t, RefResult)
+INTEL_SUBGROUP_AVC_TYPE(sic_result_t, SicResult)
+INTEL_SUBGROUP_AVC_TYPE(ime_result_single_reference_streamout_t, ImeResultSingleRefStreamout)
+INTEL_SUBGROUP_AVC_TYPE(ime_result_dual_reference_streamout_t, ImeResultDualRefStreamout)
+INTEL_SUBGROUP_AVC_TYPE(ime_single_reference_streamin_t, ImeSingleRefStreamin)
+INTEL_SUBGROUP_AVC_TYPE(ime_dual_reference_streamin_t, ImeDualRefStreamin)
+
+#undef INTEL_SUBGROUP_AVC_TYPE
+#endif // INTEL_SUBGROUP_AVC_TYPE
+
+#undef EXT_OPAQUE_TYPE
+

include/clang/Basic/OpenCLExtensions.def

 
 // AMD OpenCL extensions
 OPENCLEXT_INTERNAL(cl_amd_media_ops, 100, ~0U)
 OPENCLEXT_INTERNAL(cl_amd_media_ops2, 100, ~0U)
 
 // Intel OpenCL extensions
 OPENCLEXT_INTERNAL(cl_intel_subgroups, 120, ~0U)
 OPENCLEXT_INTERNAL(cl_intel_subgroups_short, 120, ~0U)
+OPENCLEXT_INTERNAL(cl_intel_device_side_avc_motion_estimation, 120, ~0U)
 
 #undef OPENCLEXT_INTERNAL
 
 #ifdef OPENCLEXT
 #undef OPENCLEXT
 #endif

include/clang/Sema/Initialization.h

enum StepKind {
 
     /// Initialize an OpenCL sampler from an integer.
     SK_OCLSamplerInit,
 
     /// Initialize queue_t from 0.
     SK_OCLZeroQueue,
 
     /// Passing zero to a function where OpenCL event_t is expected.
-    SK_OCLZeroEvent
+    SK_OCLZeroEvent,
+
+    /// Initialize by zero types defined in the
+    /// cl_intel_device_side_avc_motion_estimation OpenCL extension
+    SK_OCLIntelSubgroupAVCZeroInit
   };
 
   /// A single step in the initialization sequence.
   class Step {
   public:
     /// The kind of conversion or initialization step we are taking.
     StepKind Kind;
 
public:
 
   /// Add a step to initialize an OpenCL event_t from a NULL
   /// constant.
   void AddOCLZeroEventStep(QualType T);
 
   /// Add a step to initialize an OpenCL queue_t from 0.
   void AddOCLZeroQueueStep(QualType T);
 
+  /// Add a step to initialize by zero types defined in the
+  /// cl_intel_device_side_avc_motion_estimation OpenCL extension
+  void AddOCLIntelSubgroupAVCZeroInitStep(QualType T);
+
   /// Add steps to unwrap a initializer list for a reference around a
   /// single element and rewrap it at the end.
   void RewrapReferenceInitList(QualType T, InitListExpr *Syntactic);
 
   /// Note that this initialization sequence failed.
   void SetFailed(FailureKind Failure) {
     SequenceKind = FailedSequence;
     this->Failure = Failure;

include/clang/Serialization/ASTBitCodes.h

enum PredefinedTypeIDs {
 
       /// \brief The '_Sat unsigned long _Fract' type
       PREDEF_TYPE_SAT_ULONG_FRACT_ID = 69,
 
       /// OpenCL image types with auto numeration
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
       PREDEF_TYPE_##Id##_ID,
 #include "clang/Basic/OpenCLImageTypes.def"
+      /// \brief OpenCL extension types with auto numeration
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+      PREDEF_TYPE_##Id##_ID,
+#include "clang/Basic/OpenCLExtensionTypes.def"
     };
 
     /// The number of predefined type IDs that are reserved for
     /// the PREDEF_TYPE_* constants.
     ///
     /// Type IDs for non-predefined types will start at
     /// NUM_PREDEF_TYPE_IDs.
     const unsigned NUM_PREDEF_TYPE_IDS = 200;

include/clang/module.modulemap

module Clang_Basic {
   textual header "Basic/BuiltinsX86.def"
   textual header "Basic/BuiltinsX86_64.def"
   textual header "Basic/BuiltinsXCore.def"
   textual header "Basic/DiagnosticOptions.def"
   textual header "Basic/Features.def"
   textual header "Basic/LangOptions.def"
   textual header "Basic/OpenCLExtensions.def"
   textual header "Basic/OpenCLImageTypes.def"
+  textual header "Basic/OpenCLExtensionTypes.def"
   textual header "Basic/OpenMPKinds.def"
   textual header "Basic/OperatorKinds.def"
   textual header "Basic/Sanitizers.def"
   textual header "Basic/TokenKinds.def"
   textual header "Basic/X86Target.def"
 
   module * { export * }
 }

lib/AST/ASTContext.cpp

#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     InitBuiltinType(SingletonId, BuiltinType::Id);
 #include "clang/Basic/OpenCLImageTypes.def"
 
     InitBuiltinType(OCLSamplerTy, BuiltinType::OCLSampler);
     InitBuiltinType(OCLEventTy, BuiltinType::OCLEvent);
     InitBuiltinType(OCLClkEventTy, BuiltinType::OCLClkEvent);
     InitBuiltinType(OCLQueueTy, BuiltinType::OCLQueue);
     InitBuiltinType(OCLReserveIDTy, BuiltinType::OCLReserveID);
+
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    InitBuiltinType(Id##Ty, BuiltinType::Id);
+#include "clang/Basic/OpenCLExtensionTypes.def"
   }
 
   // Builtin type for __objc_yes and __objc_no
   ObjCBuiltinBoolTy = (Target.useSignedCharForObjCBool() ?
                        SignedCharTy : BoolTy);
 
   ObjCConstantStringType = QualType();
 
case Type::Builtin:
     case BuiltinType::OCLSampler:
     case BuiltinType::OCLEvent:
     case BuiltinType::OCLClkEvent:
     case BuiltinType::OCLQueue:
     case BuiltinType::OCLReserveID:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
       AS = getTargetAddressSpace(
           Target->getOpenCLTypeAddrSpace(getOpenCLTypeKind(T)));
       Width = Target->getPointerWidth(AS);
       Align = Target->getPointerAlign(AS);
       break;
     }
     break;
   case Type::ObjCObjectPointer:
static char getObjCEncodingForPrimitiveKind(const ASTContext *C,
     case BuiltinType::ObjCClass:
     case BuiltinType::ObjCSel:
       llvm_unreachable("@encoding ObjC primitive type");
 
     // OpenCL and placeholder types don't need @encodings.
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
     case BuiltinType::OCLEvent:
     case BuiltinType::OCLClkEvent:
     case BuiltinType::OCLQueue:
     case BuiltinType::OCLReserveID:
     case BuiltinType::OCLSampler:
     case BuiltinType::Dependent:
 #define BUILTIN_TYPE(KIND, ID)
 #define PLACEHOLDER_TYPE(KIND, ID) \

lib/AST/ASTImporter.cpp

 }
 
 QualType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) {
   switch (T->getKind()) {
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id: \
     return Importer.getToContext().SingletonId;
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id: \
+    return Importer.getToContext().Id##Ty;
+#include "clang/Basic/OpenCLExtensionTypes.def"
 #define SHARED_SINGLETON_TYPE(Expansion)
 #define BUILTIN_TYPE(Id, SingletonId) \
   case BuiltinType::Id: return Importer.getToContext().SingletonId;
 #include "clang/AST/BuiltinTypes.def"
 
   // FIXME: for Char16, Char32, and NullPtr, make sure that the "to"
   // context supports C++.
 

lib/AST/Expr.cpp

bool CastExpr::CastConsistency() const {
   case CK_IntegralComplexCast:
   case CK_IntegralComplexToFloatingComplex:
   case CK_ARCProduceObject:
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject:
   case CK_ZeroToOCLEvent:
   case CK_ZeroToOCLQueue:
+  case CK_ZeroToOCLIntelSubgroupAVCType:
   case CK_IntToOCLSampler:
     assert(!getType()->isBooleanType() && "unheralded conversion to bool");
     goto CheckNoBasePath;
 
   case CK_Dependent:
   case CK_LValueToRValue:
   case CK_NoOp:
   case CK_AtomicToNonAtomic:

lib/AST/ExprConstant.cpp

#include "clang/AST/BuiltinTypes.def"
     case BuiltinType::NullPtr:
 
     case BuiltinType::ObjCId:
     case BuiltinType::ObjCClass:
     case BuiltinType::ObjCSel:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
     case BuiltinType::OCLSampler:
     case BuiltinType::OCLEvent:
     case BuiltinType::OCLClkEvent:
     case BuiltinType::OCLQueue:
     case BuiltinType::OCLReserveID:
       return GCCTypeClass::None;
 
     case BuiltinType::Dependent:
bool IntExprEvaluator::VisitCastExpr(const CastExpr *E) {
   case CK_FloatingComplexCast:
   case CK_FloatingComplexToIntegralComplex:
   case CK_IntegralRealToComplex:
   case CK_IntegralComplexCast:
   case CK_IntegralComplexToFloatingComplex:
   case CK_BuiltinFnToFnPtr:
   case CK_ZeroToOCLEvent:
   case CK_ZeroToOCLQueue:
+  case CK_ZeroToOCLIntelSubgroupAVCType:
   case CK_NonAtomicToAtomic:
   case CK_AddressSpaceConversion:
   case CK_IntToOCLSampler:
     llvm_unreachable("invalid cast kind for integral value");
 
   case CK_BitCast:
   case CK_Dependent:
   case CK_LValueBitCast:
bool ComplexExprEvaluator::VisitCastExpr(const CastExpr *E) {
   case CK_ARCProduceObject:
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject:
   case CK_CopyAndAutoreleaseBlockObject:
   case CK_BuiltinFnToFnPtr:
   case CK_ZeroToOCLEvent:
   case CK_ZeroToOCLQueue:
+  case CK_ZeroToOCLIntelSubgroupAVCType:
   case CK_NonAtomicToAtomic:
   case CK_AddressSpaceConversion:
   case CK_IntToOCLSampler:
     llvm_unreachable("invalid cast kind for complex value");
 
   case CK_LValueToRValue:
   case CK_AtomicToNonAtomic:
   case CK_NoOp:

lib/AST/ItaniumMangle.cpp

case BuiltinType::OCLClkEvent:
     Out << "12ocl_clkevent";
     break;
   case BuiltinType::OCLQueue:
     Out << "9ocl_queue";
     break;
   case BuiltinType::OCLReserveID:
     Out << "13ocl_reserveid";
     break;
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id: \
+    type_name = "ocl_" #ExtType; \
+    Out << type_name.size() << type_name; \
+    break;
+#include "clang/Basic/OpenCLExtensionTypes.def"
   }
 }
 
 StringRef CXXNameMangler::getCallingConvQualifierName(CallingConv CC) {
   switch (CC) {
   case CC_C:
     return "";
 

lib/AST/MicrosoftMangle.cpp

#include "clang/Basic/OpenCLImageTypes.def"
   case BuiltinType::OCLQueue:
     Out << "PA";
     mangleArtificalTagType(TTK_Struct, "ocl_queue");
     break;
   case BuiltinType::OCLReserveID:
     Out << "PA";
     mangleArtificalTagType(TTK_Struct, "ocl_reserveid");
     break;
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id: \
+    mangleArtificalTagType(TTK_Struct, "ocl_" #ExtType); \
+    break;
+#include "clang/Basic/OpenCLExtensionTypes.def"
 
   case BuiltinType::NullPtr:
     Out << "$$T";
     break;
 
   case BuiltinType::Float16:
     mangleArtificalTagType(TTK_Struct, "_Float16", {"__clang"});
     break;

lib/AST/NSAPI.cpp

NSAPI::getNSNumberFactoryMethodKind(QualType T) const {
   case BuiltinType::Float128:
   case BuiltinType::NullPtr:
   case BuiltinType::ObjCClass:
   case BuiltinType::ObjCId:
   case BuiltinType::ObjCSel:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
   case BuiltinType::OCLSampler:
   case BuiltinType::OCLEvent:
   case BuiltinType::OCLClkEvent:
   case BuiltinType::OCLQueue:
   case BuiltinType::OCLReserveID:
   case BuiltinType::BoundMember:
   case BuiltinType::Dependent:
   case BuiltinType::Overload:

lib/AST/Type.cpp

#include "clang/Basic/OpenCLImageTypes.def"
   case OCLClkEvent:
     return "clk_event_t";
   case OCLQueue:
     return "queue_t";
   case OCLReserveID:
     return "reserve_id_t";
   case OMPArraySection:
     return "<OpenMP array section type>";
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case Id: \
+    return #ExtType;
+#include "clang/Basic/OpenCLExtensionTypes.def"
   }
 
   llvm_unreachable("Invalid builtin type.");
 }
 
 QualType QualType::getNonLValueExprType(const ASTContext &Context) const {
   if (const auto *RefType = getTypePtr()->getAs<ReferenceType>())
     return RefType->getPointeeType();
#include "clang/AST/BuiltinTypes.def"
 
     case BuiltinType::Void:
     case BuiltinType::ObjCId:
     case BuiltinType::ObjCClass:
     case BuiltinType::ObjCSel:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
     case BuiltinType::OCLSampler:
     case BuiltinType::OCLEvent:
     case BuiltinType::OCLClkEvent:
     case BuiltinType::OCLQueue:
     case BuiltinType::OCLReserveID:
     case BuiltinType::BuiltinFn:
     case BuiltinType::NullPtr:
     case BuiltinType::OMPArraySection:

lib/AST/TypeLoc.cpp

TypeSpecifierType BuiltinTypeLoc::getWrittenTypeSpec() const {
   case BuiltinType::ARCUnbridgedCast:
   case BuiltinType::PseudoObject:
   case BuiltinType::ObjCId:
   case BuiltinType::ObjCClass:
   case BuiltinType::ObjCSel:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
   case BuiltinType::OCLSampler:
   case BuiltinType::OCLEvent:
   case BuiltinType::OCLClkEvent:
   case BuiltinType::OCLQueue:
   case BuiltinType::OCLReserveID:
   case BuiltinType::BuiltinFn:
   case BuiltinType::OMPArraySection:
     return TST_unspecified;

lib/Analysis/PrintfFormatString.cpp

bool PrintfSpecifier::fixType(QualType QT, const LangOptions &LangOpt,
   case BuiltinType::SatUFract:
   case BuiltinType::SatULongFract:
     // Various types which are non-trivial to correct.
     return false;
 
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
 #define SIGNED_TYPE(Id, SingletonId)
 #define UNSIGNED_TYPE(Id, SingletonId)
 #define FLOATING_TYPE(Id, SingletonId)
 #define BUILTIN_TYPE(Id, SingletonId) \
   case BuiltinType::Id:
 #include "clang/AST/BuiltinTypes.def"
     // Misc other stuff which doesn't make sense here.
     return false;

lib/CodeGen/CGDebugInfo.h

#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix)                   \
   llvm::DIType *SingletonId = nullptr;
 #include "clang/Basic/OpenCLImageTypes.def"
   llvm::DIType *OCLSamplerDITy = nullptr;
   llvm::DIType *OCLEventDITy = nullptr;
   llvm::DIType *OCLClkEventDITy = nullptr;
   llvm::DIType *OCLQueueDITy = nullptr;
   llvm::DIType *OCLNDRangeDITy = nullptr;
   llvm::DIType *OCLReserveIDDITy = nullptr;
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  llvm::DIType *Id##Ty = nullptr;
+#include "clang/Basic/OpenCLExtensionTypes.def"
 
   /// Cache of previously constructed Types.
   llvm::DenseMap<const void *, llvm::TrackingMDRef> TypeCache;
 
   llvm::SmallDenseMap<llvm::StringRef, llvm::StringRef> DebugPrefixMap;
 
   /// Cache that maps VLA types to size expressions for that type,
   /// represented by instantiated Metadata nodes.

lib/CodeGen/CGDebugInfo.cpp

#include "clang/Basic/OpenCLImageTypes.def"
   case BuiltinType::OCLEvent:
     return getOrCreateStructPtrType("opencl_event_t", OCLEventDITy);
   case BuiltinType::OCLClkEvent:
     return getOrCreateStructPtrType("opencl_clk_event_t", OCLClkEventDITy);
   case BuiltinType::OCLQueue:
     return getOrCreateStructPtrType("opencl_queue_t", OCLQueueDITy);
   case BuiltinType::OCLReserveID:
     return getOrCreateStructPtrType("opencl_reserve_id_t", OCLReserveIDDITy);
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id: \
+    return getOrCreateStructPtrType("opencl_" #ExtType, Id##Ty);
+#include "clang/Basic/OpenCLExtensionTypes.def"
 
   case BuiltinType::UChar:
   case BuiltinType::Char_U:
     Encoding = llvm::dwarf::DW_ATE_unsigned_char;
     break;
   case BuiltinType::Char_S:
   case BuiltinType::SChar:
     Encoding = llvm::dwarf::DW_ATE_signed_char;

lib/CodeGen/CGExpr.cpp

Address V = Builder.CreateElementBitCast(LV.getAddress(),
                                              ConvertType(E->getType()));
     return MakeAddrLValue(V, E->getType(), LV.getBaseInfo(),
                           CGM.getTBAAInfoForSubobject(LV, E->getType()));
   }
   case CK_ZeroToOCLQueue:
     llvm_unreachable("NULL to OpenCL queue lvalue cast is not valid");
   case CK_ZeroToOCLEvent:
     llvm_unreachable("NULL to OpenCL event lvalue cast is not valid");
+  case CK_ZeroToOCLIntelSubgroupAVCType:
+    llvm_unreachable("NULL to lvalue of opaque type from the "
+                     "cl_intel_device_side_avc_motion_estimation OpenCL "
+                     "extension is not valid");
   }
 
   llvm_unreachable("Unhandled lvalue cast kind?");
 }
 
 LValue CodeGenFunction::EmitOpaqueValueLValue(const OpaqueValueExpr *e) {
   assert(OpaqueValueMappingData::shouldBindAsLValue(e));
   return getOrCreateOpaqueLValueMapping(e);

lib/CodeGen/CGExprAgg.cpp

void AggExprEmitter::VisitCastExpr(CastExpr *E) {
   case CK_ARCProduceObject:
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject:
   case CK_CopyAndAutoreleaseBlockObject:
   case CK_BuiltinFnToFnPtr:
   case CK_ZeroToOCLEvent:
   case CK_ZeroToOCLQueue:
+  case CK_ZeroToOCLIntelSubgroupAVCType:
   case CK_AddressSpaceConversion:
   case CK_IntToOCLSampler:
     llvm_unreachable("cast kind invalid for aggregate types");
   }
 }
 
 void AggExprEmitter::VisitCallExpr(const CallExpr *E) {
   if (E->getCallReturnType(CGF.getContext())->isReferenceType()) {

lib/CodeGen/CGExprComplex.cpp

ComplexPairTy ComplexExprEmitter::EmitCast(CastKind CK, Expr *Op,
   case CK_ARCProduceObject:
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject:
   case CK_CopyAndAutoreleaseBlockObject:
   case CK_BuiltinFnToFnPtr:
   case CK_ZeroToOCLEvent:
   case CK_ZeroToOCLQueue:
+  case CK_ZeroToOCLIntelSubgroupAVCType:
   case CK_AddressSpaceConversion:
   case CK_IntToOCLSampler:
     llvm_unreachable("invalid cast kind for complex value");
 
   case CK_FloatingRealToComplex:
   case CK_IntegralRealToComplex:
     return EmitScalarToComplexCast(CGF.EmitScalarExpr(Op), Op->getType(),
                                    DestTy, Op->getExprLoc());

lib/CodeGen/CGExprConstant.cpp

llvm::Constant *VisitCastExpr(CastExpr *E, QualType destType) {
     case CK_IntegralToPointer:
     case CK_IntegralToBoolean:
     case CK_IntegralToFloating:
     case CK_FloatingToIntegral:
     case CK_FloatingToBoolean:
     case CK_FloatingCast:
     case CK_ZeroToOCLEvent:
     case CK_ZeroToOCLQueue:
+    case CK_ZeroToOCLIntelSubgroupAVCType:
       return nullptr;
     }
     llvm_unreachable("Invalid CastKind");
   }
 
   llvm::Constant *VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE, QualType T) {
     return Visit(DAE->getExpr(), T);
   }

lib/CodeGen/CGExprScalar.cpp

case CK_ZeroToOCLEvent: {
     return llvm::Constant::getNullValue(ConvertType(DestTy));
   }
 
   case CK_ZeroToOCLQueue: {
     assert(DestTy->isQueueT() && "CK_ZeroToOCLQueue cast on non queue_t type");
     return llvm::Constant::getNullValue(ConvertType(DestTy));
   }
 
+  case CK_ZeroToOCLIntelSubgroupAVCType: {
+    assert(DestTy->isOCLIntelSubgroupAVCType() &&
+        "CK_ZeroToOCLIntelSubgroupAVCType cast on type which is not "
+        "defined in the cl_intel_device_side_avc_motion_estimation "
+        "OpenCL extension is invalid");
+    return llvm::Constant::getNullValue(ConvertType(DestTy));
+  }
+
   case CK_IntToOCLSampler:
     return CGF.CGM.createOpenCLIntToSamplerConversion(E, CGF);
 
   } // end of switch
 
   llvm_unreachable("unknown scalar cast");
 }
 

lib/CodeGen/CGOpenCLRuntime.cpp

case BuiltinType::OCLClkEvent:
     return llvm::PointerType::get(
         llvm::StructType::create(Ctx, "opencl.clk_event_t"), AddrSpc);
   case BuiltinType::OCLQueue:
     return llvm::PointerType::get(
         llvm::StructType::create(Ctx, "opencl.queue_t"), AddrSpc);
   case BuiltinType::OCLReserveID:
     return llvm::PointerType::get(
         llvm::StructType::create(Ctx, "opencl.reserve_id_t"), AddrSpc);
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id: \
+    return llvm::PointerType::get( \
+        llvm::StructType::create(Ctx, "opencl." #ExtType), AddrSpc);
+#include "clang/Basic/OpenCLExtensionTypes.def"
   }
 }
 
 llvm::Type *CGOpenCLRuntime::getPipeType(const PipeType *T) {
   if (T->isReadOnly())
     return getPipeType(T, "opencl.pipe_ro_t", PipeROTy);
   else
     return getPipeType(T, "opencl.pipe_wo_t", PipeWOTy);

lib/CodeGen/CodeGenTypes.cpp

case Type::Builtin: {
     case BuiltinType::UInt128:
     case BuiltinType::Int128:
       ResultType = llvm::IntegerType::get(getLLVMContext(), 128);
       break;
 
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
     case BuiltinType::OCLSampler:
     case BuiltinType::OCLEvent:
     case BuiltinType::OCLClkEvent:
     case BuiltinType::OCLQueue:
     case BuiltinType::OCLReserveID:
       ResultType = CGM.getOpenCLRuntime().convertOpenCLSpecificType(Ty);
       break;
 

lib/CodeGen/ItaniumCXXABI.cpp

switch (Ty->getKind()) {
     case BuiltinType::Char32:
     case BuiltinType::Int128:
     case BuiltinType::UInt128:
       return true;
 
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
     case BuiltinType::OCLSampler:
     case BuiltinType::OCLEvent:
     case BuiltinType::OCLClkEvent:
     case BuiltinType::OCLQueue:
     case BuiltinType::OCLReserveID:
     case BuiltinType::ShortAccum:
     case BuiltinType::Accum:
     case BuiltinType::LongAccum:

lib/Edit/RewriteObjCFoundationAPI.cpp

if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Arg)) {
     case CK_ARCConsumeObject:
     case CK_ARCReclaimReturnedObject:
     case CK_ARCExtendBlockObject:
     case CK_NonAtomicToAtomic:
     case CK_CopyAndAutoreleaseBlockObject:
     case CK_BuiltinFnToFnPtr:
     case CK_ZeroToOCLEvent:
     case CK_ZeroToOCLQueue:
+    case CK_ZeroToOCLIntelSubgroupAVCType:
     case CK_IntToOCLSampler:
       return false;
 
     case CK_BooleanToSignedIntegral:
       llvm_unreachable("OpenCL-specific cast in Objective-C?");
     }
   }
 

lib/Headers/opencl-c.h

 #endif // (__OPENCL_C_VERSION__ >= CL_VERSION_2_0)
 
 void        __ovld __conv intel_sub_group_block_write_us(  __global ushort* p, ushort  data );
 void        __ovld __conv intel_sub_group_block_write_us2( __global ushort* p, ushort2 data );
 void        __ovld __conv intel_sub_group_block_write_us4( __global ushort* p, ushort4 data );
 void        __ovld __conv intel_sub_group_block_write_us8( __global ushort* p, ushort8 data );
 #endif // cl_intel_subgroups_short
 
+#ifdef cl_intel_device_side_avc_motion_estimation
+#pragma OPENCL EXTENSION cl_intel_device_side_avc_motion_estimation : enable
+
+#define CLK_AVC_ME_MAJOR_16x16_INTEL 0x0
+#define CLK_AVC_ME_MAJOR_16x8_INTEL 0x1
+#define CLK_AVC_ME_MAJOR_8x16_INTEL 0x2
+#define CLK_AVC_ME_MAJOR_8x8_INTEL 0x3
+
+#define CLK_AVC_ME_MINOR_8x8_INTEL 0x0
+#define CLK_AVC_ME_MINOR_8x4_INTEL 0x1
+#define CLK_AVC_ME_MINOR_4x8_INTEL 0x2
+#define CLK_AVC_ME_MINOR_4x4_INTEL 0x3
+
+#define CLK_AVC_ME_MAJOR_FORWARD_INTEL 0x0
+#define CLK_AVC_ME_MAJOR_BACKWARD_INTEL 0x1
+#define CLK_AVC_ME_MAJOR_BIDIRECTIONAL_INTEL 0x2
+
+#define CLK_AVC_ME_PARTITION_MASK_ALL_INTEL 0x0
+#define CLK_AVC_ME_PARTITION_MASK_16x16_INTEL 0x7E
+#define CLK_AVC_ME_PARTITION_MASK_16x8_INTEL 0x7D
+#define CLK_AVC_ME_PARTITION_MASK_8x16_INTEL 0x7B
+#define CLK_AVC_ME_PARTITION_MASK_8x8_INTEL 0x77
+#define CLK_AVC_ME_PARTITION_MASK_8x4_INTEL 0x6F
+#define CLK_AVC_ME_PARTITION_MASK_4x8_INTEL 0x5F
+#define CLK_AVC_ME_PARTITION_MASK_4x4_INTEL 0x3F
+
+#define CLK_AVC_ME_SLICE_TYPE_PRED_INTEL 0x0
+#define CLK_AVC_ME_SLICE_TYPE_BPRED_INTEL 0x1
+#define CLK_AVC_ME_SLICE_TYPE_INTRA_INTEL 0x2
+
+#define CLK_AVC_ME_SEARCH_WINDOW_EXHAUSTIVE_INTEL 0x0
+#define CLK_AVC_ME_SEARCH_WINDOW_SMALL_INTEL 0x1
+#define CLK_AVC_ME_SEARCH_WINDOW_TINY_INTEL 0x2
+#define CLK_AVC_ME_SEARCH_WINDOW_EXTRA_TINY_INTEL 0x3
+#define CLK_AVC_ME_SEARCH_WINDOW_DIAMOND_INTEL 0x4
+#define CLK_AVC_ME_SEARCH_WINDOW_LARGE_DIAMOND_INTEL 0x5
+#define CLK_AVC_ME_SEARCH_WINDOW_RESERVED0_INTEL 0x6
+#define CLK_AVC_ME_SEARCH_WINDOW_RESERVED1_INTEL 0x7
+#define CLK_AVC_ME_SEARCH_WINDOW_CUSTOM_INTEL 0x8
+#define CLK_AVC_ME_SEARCH_WINDOW_16x12_RADIUS_INTEL 0x9
+#define CLK_AVC_ME_SEARCH_WINDOW_4x4_RADIUS_INTEL 0x2
+#define CLK_AVC_ME_SEARCH_WINDOW_2x2_RADIUS_INTEL 0xa
+
+#define CLK_AVC_ME_SAD_ADJUST_MODE_NONE_INTEL 0x0
+#define CLK_AVC_ME_SAD_ADJUST_MODE_HAAR_INTEL 0x2
+
+#define CLK_AVC_ME_SUBPIXEL_MODE_INTEGER_INTEL 0x0
+#define CLK_AVC_ME_SUBPIXEL_MODE_HPEL_INTEL 0x1
+#define CLK_AVC_ME_SUBPIXEL_MODE_QPEL_INTEL 0x3
+
+#define CLK_AVC_ME_COST_PRECISION_QPEL_INTEL 0x0
+#define CLK_AVC_ME_COST_PRECISION_HPEL_INTEL 0x1
+#define CLK_AVC_ME_COST_PRECISION_PEL_INTEL 0x2
+#define CLK_AVC_ME_COST_PRECISION_DPEL_INTEL 0x3
+
+#define CLK_AVC_ME_BIDIR_WEIGHT_QUARTER_INTEL 0x10
+#define CLK_AVC_ME_BIDIR_WEIGHT_THIRD_INTEL 0x15
+#define CLK_AVC_ME_BIDIR_WEIGHT_HALF_INTEL 0x20
+#define CLK_AVC_ME_BIDIR_WEIGHT_TWO_THIRD_INTEL 0x2B
+#define CLK_AVC_ME_BIDIR_WEIGHT_THREE_QUARTER_INTEL 0x30
+
+#define CLK_AVC_ME_BORDER_REACHED_LEFT_INTEL 0x0
+#define CLK_AVC_ME_BORDER_REACHED_RIGHT_INTEL 0x2
+#define CLK_AVC_ME_BORDER_REACHED_TOP_INTEL 0x4
+#define CLK_AVC_ME_BORDER_REACHED_BOTTOM_INTEL 0x8
+
+#define CLK_AVC_ME_INTRA_16x16_INTEL 0x0
+#define CLK_AVC_ME_INTRA_8x8_INTEL 0x1
+#define CLK_AVC_ME_INTRA_4x4_INTEL 0x2
+
+#define CLK_AVC_ME_SKIP_BLOCK_PARTITION_16x16_INTEL 0x0
+#define CLK_AVC_ME_SKIP_BLOCK_PARTITION_8x8_INTEL 0x4000
+
+#define CLK_AVC_ME_SKIP_BLOCK_16x16_FORWARD_ENABLE_INTEL (0x1 << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_16x16_BACKWARD_ENABLE_INTEL (0x2 << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_16x16_DUAL_ENABLE_INTEL (0x3 << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_FORWARD_ENABLE_INTEL (0x55 << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_BACKWARD_ENABLE_INTEL (0xAA << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_DUAL_ENABLE_INTEL (0xFF << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_0_FORWARD_ENABLE_INTEL (0x1 << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_0_BACKWARD_ENABLE_INTEL (0x2 << 24)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_1_FORWARD_ENABLE_INTEL (0x1 << 26)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_1_BACKWARD_ENABLE_INTEL (0x2 << 26)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_2_FORWARD_ENABLE_INTEL (0x1 << 28)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_2_BACKWARD_ENABLE_INTEL (0x2 << 28)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_3_FORWARD_ENABLE_INTEL (0x1 << 30)
+#define CLK_AVC_ME_SKIP_BLOCK_8x8_3_BACKWARD_ENABLE_INTEL (0x2 << 30)
+
+#define CLK_AVC_ME_BLOCK_BASED_SKIP_4x4_INTEL 0x00
+#define CLK_AVC_ME_BLOCK_BASED_SKIP_8x8_INTEL 0x80
+
+#define CLK_AVC_ME_INTRA_LUMA_PARTITION_MASK_ALL_INTEL 0x0
+#define CLK_AVC_ME_INTRA_LUMA_PARTITION_MASK_16x16_INTEL 0x6
+#define CLK_AVC_ME_INTRA_LUMA_PARTITION_MASK_8x8_INTEL 0x5
+#define CLK_AVC_ME_INTRA_LUMA_PARTITION_MASK_4x4_INTEL 0x3
+
+#define CLK_AVC_ME_INTRA_NEIGHBOR_LEFT_MASK_ENABLE_INTEL 0x60
+#define CLK_AVC_ME_INTRA_NEIGHBOR_UPPER_MASK_ENABLE_INTEL 0x10
+#define CLK_AVC_ME_INTRA_NEIGHBOR_UPPER_RIGHT_MASK_ENABLE_INTEL 0x8
+#define CLK_AVC_ME_INTRA_NEIGHBOR_UPPER_LEFT_MASK_ENABLE_INTEL 0x4
+
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_VERTICAL_INTEL 0x0
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_HORIZONTAL_INTEL 0x1
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_DC_INTEL 0x2
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_DIAGONAL_DOWN_LEFT_INTEL 0x3
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_DIAGONAL_DOWN_RIGHT_INTEL 0x4
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_PLANE_INTEL 0x4
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_VERTICAL_RIGHT_INTEL 0x5
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_HORIZONTAL_DOWN_INTEL 0x6
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_VERTICAL_LEFT_INTEL 0x7
+#define CLK_AVC_ME_LUMA_PREDICTOR_MODE_HORIZONTAL_UP_INTEL 0x8
+#define CLK_AVC_ME_CHROMA_PREDICTOR_MODE_DC_INTEL 0x0
+#define CLK_AVC_ME_CHROMA_PREDICTOR_MODE_HORIZONTAL_INTEL 0x1
+#define CLK_AVC_ME_CHROMA_PREDICTOR_MODE_VERTICAL_INTEL 0x2
+#define CLK_AVC_ME_CHROMA_PREDICTOR_MODE_PLANE_INTEL 0x3
+
+#define CLK_AVC_ME_FRAME_FORWARD_INTEL 0x1
+#define CLK_AVC_ME_FRAME_BACKWARD_INTEL 0x2
+#define CLK_AVC_ME_FRAME_DUAL_INTEL 0x3
+
+#define CLK_AVC_ME_INTERLACED_SCAN_TOP_FIELD_INTEL 0x0
+#define CLK_AVC_ME_INTERLACED_SCAN_BOTTOM_FIELD_INTEL 0x1
+
+#define CLK_AVC_ME_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_PAYLOAD_INITIALIZE_INTEL 0x0
+#define CLK_AVC_REF_PAYLOAD_INITIALIZE_INTEL 0x0
+#define CLK_AVC_SIC_PAYLOAD_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_RESULT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_REF_RESULT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_SIC_RESULT_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMOUT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMIN_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMOUT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMIN_INITIALIZE_INTEL 0x0
+
+// MCE built-in functions
+uchar __ovld
+intel_sub_group_avc_mce_get_default_inter_base_multi_reference_penalty(
+    uchar slice_type, uchar qp);
+ulong __ovld intel_sub_group_avc_mce_get_default_inter_shape_penalty(
+    uchar slice_type, uchar qp);
+uchar __ovld intel_sub_group_avc_mce_get_default_inter_direction_penalty(
+    uchar slice_type, uchar qp);
+uint __ovld intel_sub_group_avc_mce_get_default_intra_luma_shape_penalty(
+    uchar slice_type, uchar qp);
+uint2 __ovld
+intel_sub_group_avc_mce_get_default_inter_motion_vector_coslice_type_table(
+    uchar slice_type, uchar qp);
+uchar __ovld intel_sub_group_avc_mce_get_default_intra_luma_mode_penalty(
+    uchar slice_type, uchar qp);
+
+uint2 __ovld intel_sub_group_avc_mce_get_default_high_penalty_cost_table();
+uint2 __ovld intel_sub_group_avc_mce_get_default_medium_penalty_cost_table();
+uint2 __ovld intel_sub_group_avc_mce_get_default_low_penalty_cost_table();
+uint __ovld intel_sub_group_avc_mce_get_default_non_dc_luma_intra_penalty();
+uchar __ovld
+intel_sub_group_avc_mce_get_default_intra_chroma_mode_base_penalty();
+
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_inter_base_multi_reference_penalty(
+    uchar reference_penalty, intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_inter_shape_penalty(
+    ulong packed_shape_cost, intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_inter_direction_penalty(
+    uchar direction_cost, intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_motion_vector_cost_function(
+    ulong packed_cost_center_delta, uint2 packed_cost_table,
+    uchar cost_precision, intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_ac_only_haar(
+  intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_source_interlaced_field_polarity(
+    uchar src_field_polarity, intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_single_reference_interlaced_field_polarity(
+    uchar ref_field_polarity, intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_mce_set_dual_reference_interlaced_field_polarities(
+    uchar fwd_ref_field_polarity, uchar bwd_ref_field_polarity,
+    intel_sub_group_avc_mce_payload_t payload);
+
+ulong __ovld intel_sub_group_avc_mce_get_motion_vectors(
+    intel_sub_group_avc_mce_result_t result);
+ushort __ovld intel_sub_group_avc_mce_get_inter_distortions(
+    intel_sub_group_avc_mce_result_t result);
+ushort __ovld intel_sub_group_avc_mce_get_best_inter_distortion(
+    intel_sub_group_avc_mce_result_t result);
+uchar __ovld intel_sub_group_avc_mce_get_inter_major_shape(
+    intel_sub_group_avc_mce_result_t result);
+uchar __ovld intel_sub_group_avc_mce_get_inter_minor_shapes(
+    intel_sub_group_avc_mce_result_t result);
+uchar __ovld intel_sub_group_avc_mce_get_inter_directions(
+    intel_sub_group_avc_mce_result_t result);
+uchar __ovld intel_sub_group_avc_mce_get_inter_motion_vector_count(
+    intel_sub_group_avc_mce_result_t result);
+uint __ovld intel_sub_group_avc_mce_get_inter_reference_ids(
+    intel_sub_group_avc_mce_result_t result);
+uchar __ovld
+intel_sub_group_avc_mce_get_inter_reference_interlaced_field_polarities(
+    uint packed_reference_ids, uint packed_reference_parameter_field_polarities,
+    intel_sub_group_avc_mce_result_t result);
+
+// IME built-in functions
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_initialize(
+    ushort2 src_coord, uchar partition_mask, uchar sad_adjustment);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_single_reference(
+    short2 offset, uchar search_window_config,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_dual_reference(
+    short2 fwd_ref_offset, short2 bwd_ref_offset, uchar search_window_config,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_max_motion_vector_count(
+    uchar max_motion_vector_count, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_unidirectional_mix_disable(
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_early_search_termination_threshold(
+    uchar threshold, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_weighted_sad(
+  uint packed_sad_weights, intel_sub_group_avc_ime_payload_t payload);
+
+ushort2 __ovld intel_sub_group_avc_ime_ref_window_size(
+    uchar search_window_config, char dual_ref);
+short2 __ovld intel_sub_group_avc_ime_adjust_ref_offset(
+    short2 ref_offset, ushort2 ref_coord, ushort2 ref_window_size,
+    ushort2 frame_size);
+
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_ime_evaluate_with_single_reference(
+    read_only image2d_t src, read_only image2d_t ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_ime_evaluate_with_dual_reference(
+    read_only image2d_t src, read_only image2d_t fwd_ref,
+    read_only image2d_t bwd_ref, sampler_t vme_accel,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_result_single_reference_streamout_t __ovld
+intel_sub_group_avc_ime_evaluate_with_single_reference_streamout(
+    read_only image2d_t src, read_only image2d_t ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_result_dual_reference_streamout_t __ovld
+intel_sub_group_avc_ime_evaluate_with_dual_reference_streamout(
+    read_only image2d_t src, read_only image2d_t fwd_ref,
+    read_only image2d_t bwd_ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_ime_evaluate_with_single_reference_streamin(
+    read_only image2d_t src, read_only image2d_t ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload,
+    intel_sub_group_avc_ime_single_reference_streamin_t streamin);
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_ime_evaluate_with_dual_reference_streamin(
+    read_only image2d_t src, read_only image2d_t fwd_ref,
+    read_only image2d_t bwd_ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload,
+    intel_sub_group_avc_ime_dual_reference_streamin_t streamin);
+intel_sub_group_avc_ime_result_single_reference_streamout_t __ovld
+intel_sub_group_avc_ime_evaluate_with_single_reference_streaminout(
+    read_only image2d_t src, read_only image2d_t ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload,
+    intel_sub_group_avc_ime_single_reference_streamin_t streamin);
+intel_sub_group_avc_ime_result_dual_reference_streamout_t __ovld
+intel_sub_group_avc_ime_evaluate_with_dual_reference_streaminout(
+    read_only image2d_t src, read_only image2d_t fwd_ref,
+    read_only image2d_t bwd_ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ime_payload_t payload,
+    intel_sub_group_avc_ime_dual_reference_streamin_t streamin);
+
+intel_sub_group_avc_ime_single_reference_streamin_t __ovld
+intel_sub_group_avc_ime_get_single_reference_streamin(
+    intel_sub_group_avc_ime_result_single_reference_streamout_t result);
+intel_sub_group_avc_ime_dual_reference_streamin_t __ovld
+intel_sub_group_avc_ime_get_dual_reference_streamin(
+    intel_sub_group_avc_ime_result_dual_reference_streamout_t result);
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_ime_strip_single_reference_streamout(
+    intel_sub_group_avc_ime_result_single_reference_streamout_t result);
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_ime_strip_dual_reference_streamout(
+    intel_sub_group_avc_ime_result_dual_reference_streamout_t result);
+
+uint __ovld intel_sub_group_avc_ime_get_streamout_major_shape_motion_vectors(
+    intel_sub_group_avc_ime_result_single_reference_streamout_t result,
+    uchar major_shape);
+ushort __ovld intel_sub_group_avc_ime_get_streamout_major_shape_distortions(
+    intel_sub_group_avc_ime_result_single_reference_streamout_t result,
+    uchar major_shape);
+uchar __ovld intel_sub_group_avc_ime_get_streamout_major_shape_reference_ids(
+    intel_sub_group_avc_ime_result_single_reference_streamout_t result,
+    uchar major_shape);
+uint __ovld intel_sub_group_avc_ime_get_streamout_major_shape_motion_vectors(
+    intel_sub_group_avc_ime_result_dual_reference_streamout_t result,
+    uchar major_shape, uchar direction);
+ushort __ovld intel_sub_group_avc_ime_get_streamout_major_shape_distortions(
+    intel_sub_group_avc_ime_result_dual_reference_streamout_t result,
+    uchar major_shape, uchar direction);
+uchar __ovld intel_sub_group_avc_ime_get_streamout_major_shape_reference_ids(
+    intel_sub_group_avc_ime_result_dual_reference_streamout_t result,
+    uchar major_shape, uchar direction);
+
+uchar __ovld intel_sub_group_avc_ime_get_border_reached(
+    uchar frame_select, intel_sub_group_avc_ime_result_t result);
+uchar __ovld intel_sub_group_avc_ime_get_truncated_search_indication(
+    intel_sub_group_avc_ime_result_t payload);
+uchar __ovld
+intel_sub_group_avc_ime_get_unidirectional_early_search_termination(
+    intel_sub_group_avc_ime_result_t result);
+uint __ovld intel_sub_group_avc_ime_get_weighting_pattern_minimum_motion_vector(
+    intel_sub_group_avc_ime_result_t result);
+ushort __ovld intel_sub_group_avc_ime_get_weighting_pattern_minimum_distortion(
+    intel_sub_group_avc_ime_result_t result);
+
+// REF built-in functions
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_fme_initialize(
+    ushort2 src_coord, ulong motion_vectors, uchar major_shapes,
+    uchar minor_shapes, uchar directions, uchar pixel_resolution,
+    uchar sad_adjustment);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_bme_initialize(
+    ushort2 src_coord, ulong motion_vectors, uchar major_shapes,
+    uchar minor_shapes, uchar directions, uchar pixel_resolution,
+    uchar bidirectional_weight, uchar sad_adjustment);
+
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_bidirectional_mix_disable(
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_bilinear_filter_enable(
+    intel_sub_group_avc_ref_payload_t payload);
+
+intel_sub_group_avc_ref_result_t __ovld
+intel_sub_group_avc_ref_evaluate_with_single_reference(
+    read_only image2d_t src, read_only image2d_t ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_ref_result_t __ovld
+intel_sub_group_avc_ref_evaluate_with_dual_reference(
+    read_only image2d_t src, read_only image2d_t fwd_ref,
+    read_only image2d_t bwd_ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_ref_result_t __ovld
+intel_sub_group_avc_ref_evaluate_with_multi_reference(
+    read_only image2d_t src, uint packed_reference_ids,
+    sampler_t vme_accelerator, intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_ref_result_t __ovld
+intel_sub_group_avc_ref_evaluate_with_multi_reference(
+    read_only image2d_t src, uint packed_reference_ids,
+    uchar packed_reference_field_polarities, sampler_t vme_accelerator,
+    intel_sub_group_avc_ref_payload_t payload);
+
+// SIC built-in functions
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_initialize(
+    ushort2 src_coord);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_configure_skc(
+    uint skip_block_partition_type, uint skip_motion_vector_mask,
+    ulong motion_vectors, uchar bidirectional_weight, uchar skip_sad_adjustment,
+    intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_configure_ipe(
+    uchar luma_intra_partition_mask, uchar intra_neighbour_availabilty,
+    uchar left_edge_luma_pixels, uchar left_upper_edge_luma_pixel,
+    uchar upper_edge_luma_pixels, uchar upper_right_edge_luma_pixels,
+    uchar intra_sad_adjustment, intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_configure_ipe(
+    uchar luma_intra_partition_mask, uchar intra_neighbour_availabilty,
+    uchar left_edge_luma_pixels, uchar left_upper_edge_luma_pixel,
+    uchar upper_edge_luma_pixels, uchar upper_right_edge_luma_pixels,
+    ushort left_edge_chroma_pixels, ushort upper_left_corner_chroma_pixel,
+    ushort upper_edge_chroma_pixels, uchar intra_sad_adjustment,
+    intel_sub_group_avc_sic_payload_t payload);
+uint __ovld
+intel_sub_group_avc_sic_get_motion_vector_mask(
+    uint skip_block_partition_type, uchar direction);
+
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_intra_luma_shape_penalty(
+    uint packed_shape_cost, intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_intra_luma_mode_cost_function(
+    uchar luma_mode_penalty, uint luma_packed_neighbor_modes,
+    uint luma_packed_non_dc_penalty, intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_intra_chroma_mode_cost_function(
+    uchar chroma_mode_penalty, intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_skc_bilinear_filter_enable(
+    intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_skc_forward_transform_enable(
+    ulong packed_sad_coefficients, intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_block_based_raw_skip_sad(
+    uchar block_based_skip_block_type,
+    intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_sic_result_t __ovld
+intel_sub_group_avc_sic_evaluate_ipe(
+    read_only image2d_t src, sampler_t vme_accelerator,
+    intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_result_t __ovld
+intel_sub_group_avc_sic_evaluate_with_single_reference(
+    read_only image2d_t src, read_only image2d_t ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_result_t __ovld
+intel_sub_group_avc_sic_evaluate_with_dual_reference(
+    read_only image2d_t src, read_only image2d_t fwd_ref,
+    read_only image2d_t bwd_ref, sampler_t vme_accelerator,
+    intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_result_t __ovld
+intel_sub_group_avc_sic_evaluate_with_multi_reference(
+    read_only image2d_t src, uint ids, sampler_t vme_accelerator,
+    intel_sub_group_avc_sic_payload_t pl);
+intel_sub_group_avc_sic_result_t __ovld
+intel_sub_group_avc_sic_evaluate_with_multi_reference(
+    read_only image2d_t src, uint ids, uchar field_polarities,
+    sampler_t vme_accelerator, intel_sub_group_avc_sic_payload_t payload);
+
+uchar __ovld intel_sub_group_avc_sic_get_ipe_luma_shape(
+    intel_sub_group_avc_sic_result_t result);
+ushort __ovld intel_sub_group_avc_sic_get_best_ipe_luma_distortion(
+    intel_sub_group_avc_sic_result_t result);
+ushort __ovld intel_sub_group_avc_sic_get_best_ipe_chroma_distortion(
+    intel_sub_group_avc_sic_result_t result);
+ulong __ovld intel_sub_group_avc_sic_get_packed_ipe_luma_modes(
+    intel_sub_group_avc_sic_result_t result);
+uchar __ovld intel_sub_group_avc_sic_get_ipe_chroma_mode(
+    intel_sub_group_avc_sic_result_t result);
+uint __ovld intel_sub_group_avc_sic_get_packed_skc_luma_count_threshold(
+    intel_sub_group_avc_sic_result_t result);
+ulong __ovld intel_sub_group_avc_sic_get_packed_skc_luma_sum_threshold(
+    intel_sub_group_avc_sic_result_t result);
+ushort __ovld intel_sub_group_avc_sic_get_inter_raw_sads(
+    intel_sub_group_avc_sic_result_t result);
+
+// Wrappers
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_inter_base_multi_reference_penalty(
+    uchar ref_penalty, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_inter_base_multi_reference_penalty(
+    uchar ref_penalty, intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_inter_base_multi_reference_penalty(
+    uchar ref_penalty, intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_inter_shape_penalty(
+    ulong packed_shape_cost, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_inter_shape_penalty(
+    ulong packed_shape_cost, intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_inter_shape_penalty(
+    ulong packed_shape_cost, intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_inter_direction_penalty(
+    uchar direction_cost, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_inter_direction_penalty(
+    uchar direction_cost, intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_inter_direction_penalty(
+    uchar direction_cost, intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_motion_vector_cost_function(
+    ulong cost_delta, uint2 cost_table, uchar cost_precision,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_motion_vector_cost_function(
+    ulong cost_delta, uint2 cost_table, uchar cost_precision,
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_motion_vector_cost_function(
+    ulong cost_delta, uint2 cost_table, uchar cost_precision,
+    intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_source_interlaced_field_polarity(
+    uchar src_field_polarity, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_source_interlaced_field_polarity(
+    uchar src_field_polarity, intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_source_interlaced_field_polarity(
+    uchar src_field_polarity, intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_single_reference_interlaced_field_polarity(
+    uchar ref_field_polarity, intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_single_reference_interlaced_field_polarity(
+    uchar ref_field_polarity, intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_single_reference_interlaced_field_polarity(
+    uchar ref_field_polarity, intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_dual_reference_interlaced_field_polarities(
+    uchar fwd_ref_field_polarity, uchar bwd_ref_field_polarity,
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_dual_reference_interlaced_field_polarities(
+    uchar fwd_ref_field_polarity, uchar bwd_ref_field_polarity,
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_dual_reference_interlaced_field_polarities(
+    uchar fwd_ref_field_polarity, uchar bwd_ref_field_polarity,
+    intel_sub_group_avc_sic_payload_t payload);
+
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_ime_set_ac_only_haar(
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_ref_set_ac_only_haar(
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_sic_set_ac_only_haar(
+    intel_sub_group_avc_sic_payload_t payload);
+
+ulong __ovld intel_sub_group_avc_ime_get_motion_vectors(
+    intel_sub_group_avc_ime_result_t result);
+ulong __ovld intel_sub_group_avc_ref_get_motion_vectors(
+    intel_sub_group_avc_ref_result_t result);
+
+ushort __ovld intel_sub_group_avc_ime_get_inter_distortions(
+    intel_sub_group_avc_ime_result_t result);
+ushort __ovld intel_sub_group_avc_ref_get_inter_distortions(
+    intel_sub_group_avc_ref_result_t result);
+ushort __ovld intel_sub_group_avc_sic_get_inter_distortions(
+    intel_sub_group_avc_sic_result_t result);
+
+ushort __ovld intel_sub_group_avc_ime_get_best_inter_distortion(
+    intel_sub_group_avc_ime_result_t result);
+ushort __ovld intel_sub_group_avc_ref_get_best_inter_distortion(
+    intel_sub_group_avc_ref_result_t result);
+
+uchar __ovld intel_sub_group_avc_ime_get_inter_major_shape(
+    intel_sub_group_avc_ime_result_t result);
+uchar __ovld intel_sub_group_avc_ref_get_inter_major_shape(
+    intel_sub_group_avc_ref_result_t result);
+uchar __ovld intel_sub_group_avc_ime_get_inter_minor_shapes(
+    intel_sub_group_avc_ime_result_t result);
+uchar __ovld intel_sub_group_avc_ref_get_inter_minor_shapes(
+    intel_sub_group_avc_ref_result_t result);
+
+uchar __ovld intel_sub_group_avc_ime_get_inter_directions(
+    intel_sub_group_avc_ime_result_t result);
+uchar __ovld intel_sub_group_avc_ref_get_inter_directions(
+    intel_sub_group_avc_ref_result_t result);
+
+uchar __ovld intel_sub_group_avc_ime_get_inter_motion_vector_count(
+    intel_sub_group_avc_ime_result_t result);
+uchar __ovld intel_sub_group_avc_ref_get_inter_motion_vector_count(
+    intel_sub_group_avc_ref_result_t result);
+
+uint __ovld intel_sub_group_avc_ime_get_inter_reference_ids(
+    intel_sub_group_avc_ime_result_t result);
+uint __ovld intel_sub_group_avc_ref_get_inter_reference_ids(
+    intel_sub_group_avc_ref_result_t result);
+
+uchar __ovld
+intel_sub_group_avc_ime_get_inter_reference_interlaced_field_polarities(
+    uint packed_reference_ids, uint packed_reference_parameter_field_polarities,
+    intel_sub_group_avc_ime_result_t result);
+uchar __ovld
+intel_sub_group_avc_ref_get_inter_reference_interlaced_field_polarities(
+    uint packed_reference_ids, uint packed_reference_parameter_field_polarities,
+    intel_sub_group_avc_ref_result_t result);
+
+// Type conversion functions
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_ime_convert_to_mce_payload(
+    intel_sub_group_avc_ime_payload_t payload);
+intel_sub_group_avc_ime_payload_t __ovld
+intel_sub_group_avc_mce_convert_to_ime_payload(
+    intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_ref_convert_to_mce_payload(
+    intel_sub_group_avc_ref_payload_t payload);
+intel_sub_group_avc_ref_payload_t __ovld
+intel_sub_group_avc_mce_convert_to_ref_payload(
+    intel_sub_group_avc_mce_payload_t payload);
+intel_sub_group_avc_mce_payload_t __ovld
+intel_sub_group_avc_sic_convert_to_mce_payload(
+    intel_sub_group_avc_sic_payload_t payload);
+intel_sub_group_avc_sic_payload_t __ovld
+intel_sub_group_avc_mce_convert_to_sic_payload(
+    intel_sub_group_avc_mce_payload_t payload);
+
+intel_sub_group_avc_mce_result_t __ovld
+intel_sub_group_avc_ime_convert_to_mce_result(
+    intel_sub_group_avc_ime_result_t result);
+intel_sub_group_avc_ime_result_t __ovld
+intel_sub_group_avc_mce_convert_to_ime_result(
+    intel_sub_group_avc_mce_result_t result);
+intel_sub_group_avc_mce_result_t __ovld
+intel_sub_group_avc_ref_convert_to_mce_result(
+    intel_sub_group_avc_ref_result_t result);
+intel_sub_group_avc_ref_result_t __ovld
+intel_sub_group_avc_mce_convert_to_ref_result(
+    intel_sub_group_avc_mce_result_t result);
+intel_sub_group_avc_mce_result_t __ovld
+intel_sub_group_avc_sic_convert_to_mce_result(
+    intel_sub_group_avc_sic_result_t result);
+intel_sub_group_avc_sic_result_t __ovld
+intel_sub_group_avc_mce_convert_to_sic_result(
+    intel_sub_group_avc_mce_result_t result);
+#endif // cl_intel_device_side_avc_motion_estimation
+
 #ifdef cl_amd_media_ops
 uint __ovld amd_bitalign(uint a, uint b, uint c);
 uint2 __ovld amd_bitalign(uint2 a, uint2 b, uint2 c);
 uint3 __ovld amd_bitalign(uint3 a, uint3 b, uint3 c);
 uint4 __ovld amd_bitalign(uint4 a, uint4 b, uint4 c);
 uint8 __ovld amd_bitalign(uint8 a, uint8 b, uint8 c);
 uint16 __ovld amd_bitalign(uint16 a, uint16 b, uint16 c);
 

lib/Index/USRGeneration.cpp

if (const BuiltinType *BT = T->getAs<BuiltinType>()) {
           c = 'n'; break;
 #define BUILTIN_TYPE(Id, SingletonId)
 #define PLACEHOLDER_TYPE(Id, SingletonId) case BuiltinType::Id:
 #include "clang/AST/BuiltinTypes.def"
         case BuiltinType::Dependent:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
         case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+        case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
         case BuiltinType::OCLEvent:
         case BuiltinType::OCLClkEvent:
         case BuiltinType::OCLQueue:
         case BuiltinType::OCLReserveID:
         case BuiltinType::OCLSampler:
         case BuiltinType::ShortAccum:
         case BuiltinType::Accum:
         case BuiltinType::LongAccum:

lib/Sema/Sema.cpp

if (getLangOpts().OpenCLVersion >= 200) {
       setOpenCLExtensionForType(AtomicDoubleT, "cl_khr_fp64");
     }
 
     setOpenCLExtensionForType(Context.DoubleTy, "cl_khr_fp64");
 
 #define GENERIC_IMAGE_TYPE_EXT(Type, Id, Ext) \
     setOpenCLExtensionForType(Context.Id, Ext);
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    addImplicitTypedef(#ExtType, Context.Id##Ty); \
+    setOpenCLExtensionForType(Context.Id##Ty, #Ext);
+#include "clang/Basic/OpenCLExtensionTypes.def"
     };
 
   if (Context.getTargetInfo().hasBuiltinMSVaList()) {
     DeclarationName MSVaList = &Context.Idents.get("__builtin_ms_va_list");
     if (IdResolver.begin(MSVaList) == IdResolver.end())
       PushOnScopeChains(Context.getBuiltinMSVaListDecl(), TUScope);
   }
 

lib/Sema/SemaExpr.cpp

static bool isPlaceholderToRemoveAsArg(QualType type) {
   const BuiltinType *placeholder = dyn_cast<BuiltinType>(type);
   if (!placeholder) return false;
 
   switch (placeholder->getKind()) {
   // Ignore all the non-placeholder types.
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
 #define PLACEHOLDER_TYPE(ID, SINGLETON_ID)
 #define BUILTIN_TYPE(ID, SINGLETON_ID) case BuiltinType::ID:
 #include "clang/AST/BuiltinTypes.def"
     return false;
 
   // We cannot lower out overload sets; they might validly be resolved
   // by the call machinery.
   case BuiltinType::Overload:
ExprResult Sema::CheckPlaceholderExpr(Expr *E) {
   case BuiltinType::OMPArraySection:
     Diag(E->getBeginLoc(), diag::err_omp_array_section_use);
     return ExprError();
 
   // Everything else should be impossible.
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
 #define BUILTIN_TYPE(Id, SingletonId) case BuiltinType::Id:
 #define PLACEHOLDER_TYPE(Id, SingletonId)
 #include "clang/AST/BuiltinTypes.def"
     break;
   }
 
   llvm_unreachable("invalid placeholder type!");
 }

lib/Sema/SemaInit.cpp

if (DeclType->isAnyComplexType() && SubobjectIsDesignatorContext) {
     hadError = true;
   } else if (DeclType->isReferenceType()) {
     CheckReferenceType(Entity, IList, DeclType, Index,
                        StructuredList, StructuredIndex);
   } else if (DeclType->isObjCObjectType()) {
     if (!VerifyOnly)
       SemaRef.Diag(IList->getBeginLoc(), diag::err_init_objc_class) << DeclType;
     hadError = true;
+  } else if (DeclType->isOCLIntelSubgroupAVCType()) {
+    // Checks for scalar type are sufficient for these types too.
+    CheckScalarType(Entity, IList, DeclType, Index, StructuredList,
+                    StructuredIndex);
   } else {
     if (!VerifyOnly)
       SemaRef.Diag(IList->getBeginLoc(), diag::err_illegal_initializer_type)
           << DeclType;
     hadError = true;
   }
 }
 
void InitializationSequence::Step::Destroy() {
   case SK_PassByIndirectCopyRestore:
   case SK_PassByIndirectRestore:
   case SK_ProduceObjCObject:
   case SK_StdInitializerList:
   case SK_StdInitializerListConstructorCall:
   case SK_OCLSamplerInit:
   case SK_OCLZeroEvent:
   case SK_OCLZeroQueue:
+  case SK_OCLIntelSubgroupAVCZeroInit:
     break;
 
   case SK_ConversionSequence:
   case SK_ConversionSequenceNoNarrowing:
     delete ICS;
   }
 }
 

 
 void InitializationSequence::AddOCLZeroQueueStep(QualType T) {
   Step S;
   S.Kind = SK_OCLZeroQueue;
   S.Type = T;
   Steps.push_back(S);
 }
 
+void InitializationSequence::AddOCLIntelSubgroupAVCZeroInitStep(QualType T) {
+  Step S;
+  S.Kind = SK_OCLIntelSubgroupAVCZeroInit;
+  S.Type = T;
+  Steps.push_back(S);
+}
+
 void InitializationSequence::RewrapReferenceInitList(QualType T,
                                                      InitListExpr *Syntactic) {
   assert(Syntactic->getNumInits() == 1 &&
          "Can only rewrap trivial init lists.");
   Step S;
   S.Kind = SK_UnwrapInitList;
   S.Type = Syntactic->getInit(0)->getType();
   Steps.insert(Steps.begin(), S);
if (!S.getLangOpts().OpenCL || S.getLangOpts().OpenCLVersion < 200 ||
       !Initializer->isIntegerConstantExpr(S.getASTContext()) ||
       (Initializer->EvaluateKnownConstInt(S.getASTContext()) != 0))
     return false;
 
   Sequence.AddOCLZeroQueueStep(DestType);
   return true;
 }
 
+static bool
+TryOCLIntelSubgroupAVCZeroInitialization(Sema &S,
+                                         InitializationSequence &Sequence,
+                                         QualType DestType, Expr *Initializer) {
+  // We should allow zero initialization for all types defined in the
+  // cl_intel_device_side_avc_motion_estimation extension, except
+  // intel_sub_group_avc_mce_payload_t and intel_sub_group_avc_mce_result_t.
+  // At least OpenCL 1.2 is required.
+  if (S.getLangOpts().OpenCLVersion < 120 ||
+      !DestType->isOCLIntelSubgroupAVCType() ||
+      DestType->isOCLIntelSubgroupAVCMcePayloadType() ||
+      DestType->isOCLIntelSubgroupAVCMceResultType() ||
+      !Initializer->isIntegerConstantExpr(S.getASTContext()) ||
+      Initializer->EvaluateKnownConstInt(S.getASTContext()) != 0)
+    return false;
+
+  Sequence.AddOCLIntelSubgroupAVCZeroInitStep(DestType);
+  return true;
+}
+
 InitializationSequence::InitializationSequence(Sema &S,
                                                const InitializedEntity &Entity,
                                                const InitializationKind &Kind,
                                                MultiExprArg Args,
                                                bool TopLevelOfInitList,
                                                bool TreatUnavailableAsInvalid)
     : FailedCandidateSet(Kind.getLocation(), OverloadCandidateSet::CSK_Normal) {
   InitializeFrom(S, Entity, Kind, Args, TopLevelOfInitList,
if (TryOCLSamplerInitialization(S, *this, DestType, Initializer))
       return;
 
     if (TryOCLZeroEventInitialization(S, *this, DestType, Initializer))
       return;
 
     if (TryOCLZeroQueueInitialization(S, *this, DestType, Initializer))
        return;
 
+    if (S.getLangOpts().OpenCL && S.getOpenCLOptions().isEnabled(
+            "cl_intel_device_side_avc_motion_estimation")) {
+      if (TryOCLIntelSubgroupAVCZeroInitialization(S, *this, DestType,
+                                                   Initializer))
+        return;
+    }
+
     // Handle initialization in C
     AddCAssignmentStep(DestType);
     MaybeProduceObjCObject(S, *this, Entity);
     return;
   }
 
   assert(S.getLangOpts().CPlusPlus);
 
InitializationSequence::Perform(Sema &S,
   case SK_GNUArrayInit:
   case SK_ParenthesizedArrayInit:
   case SK_PassByIndirectCopyRestore:
   case SK_PassByIndirectRestore:
   case SK_ProduceObjCObject:
   case SK_StdInitializerList:
   case SK_OCLSamplerInit:
   case SK_OCLZeroEvent:
-  case SK_OCLZeroQueue: {
+  case SK_OCLZeroQueue:
+  case SK_OCLIntelSubgroupAVCZeroInit: {
     assert(Args.size() == 1);
     CurInit = Args[0];
     if (!CurInit.get()) return ExprError();
     break;
   }
 
   case SK_ConstructorInitialization:
   case SK_ConstructorInitializationFromList:
case SK_OCLSamplerInit: {
         // 32-bit value of sampler's initializer is interpreted as
         // bit-field with the following structure:
         // |unspecified|Filter|Addressing Mode| Normalized Coords|
         // |31        6|5    4|3             1|                 0|
         // This structure corresponds to enum values of sampler properties
         // defined in SPIR spec v1.2 and also opencl-c.h
         unsigned AddressingMode  = (0x0E & SamplerValue) >> 1;
         unsigned FilterMode      = (0x30 & SamplerValue) >> 4;
-        if (FilterMode != 1 && FilterMode != 2)
+        if (FilterMode != 1 && FilterMode != 2 &&
+            !S.getOpenCLOptions().isEnabled(
+                "cl_intel_device_side_avc_motion_estimation"))
           S.Diag(Kind.getLocation(),
                  diag::warn_sampler_initializer_invalid_bits)
                  << "Filter Mode";
         if (AddressingMode > 4)
           S.Diag(Kind.getLocation(),
                  diag::warn_sampler_initializer_invalid_bits)
                  << "Addressing Mode";
       }
 
       // Cases 1a, 2a and 2b
       // Insert cast from integer to sampler.
       CurInit = S.ImpCastExprToType(Init, S.Context.OCLSamplerTy,
                                       CK_IntToOCLSampler);
       break;
     }
     case SK_OCLZeroEvent: {
       assert(Step->Type->isEventT() &&
              "Event initialization on non-event type.");
 
       CurInit = S.ImpCastExprToType(CurInit.get(), Step->Type,
                                     CK_ZeroToOCLEvent,
                                     CurInit.get()->getValueKind());
       break;
     }
     case SK_OCLZeroQueue: {
       assert(Step->Type->isQueueT() &&
              "Event initialization on non queue type.");
 
       CurInit = S.ImpCastExprToType(CurInit.get(), Step->Type,
                                     CK_ZeroToOCLQueue,
                                     CurInit.get()->getValueKind());
       break;
     }
+    case SK_OCLIntelSubgroupAVCZeroInit: {
+      assert(Step->Type->isOCLIntelSubgroupAVCType() &&
+             "Intel subgroup AVC ME type initialization on a type which is not "
+             "defined in the cl_intel_device_side_avc_motion_estimation OpenCL "
+             "extension");
+
+      CurInit = S.ImpCastExprToType(CurInit.get(), Step->Type,
+                                    CK_ZeroToOCLIntelSubgroupAVCType,
+                                    CurInit.get()->getValueKind());
+      break;
+    }
     }
   }
 
   // Check whether the initializer has a shorter lifetime than the initialized
   // entity, and if not, either lifetime-extend or warn as appropriate.
   if (auto *Init = CurInit.get())
     S.checkInitializerLifetime(Entity, Init);
 
for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) {
 
     case SK_OCLZeroEvent:
       OS << "OpenCL event_t from zero";
       break;
 
     case SK_OCLZeroQueue:
       OS << "OpenCL queue_t from zero";
       break;
+    case SK_OCLIntelSubgroupAVCZeroInit:
+      OS << "OpenCL Intel Subgroup AVC ME opaque type from zero";
+      break;
     }
 
     OS << " [" << S->Type.getAsString() << ']';
   }
 
   OS << '\n';
 }
 

lib/Serialization/ASTCommon.cpp

serialization::TypeIdxFromBuiltin(const BuiltinType *BT) {
   case BuiltinType::ObjCSel:
     ID = PREDEF_TYPE_OBJC_SEL;
     break;
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id: \
     ID = PREDEF_TYPE_##Id##_ID; \
     break;
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+  case BuiltinType::Id: \
+    ID = PREDEF_TYPE_##Id##_ID; \
+    break;
+#include "clang/Basic/OpenCLExtensionTypes.def"
   case BuiltinType::OCLSampler:
     ID = PREDEF_TYPE_SAMPLER_ID;
     break;
   case BuiltinType::OCLEvent:
     ID = PREDEF_TYPE_EVENT_ID;
     break;
   case BuiltinType::OCLClkEvent:
     ID = PREDEF_TYPE_CLK_EVENT_ID;

lib/Serialization/ASTReader.cpp

if (Index < NUM_PREDEF_TYPE_IDS) {
     case PREDEF_TYPE_OBJC_SEL:
       T = Context.ObjCBuiltinSelTy;
       break;
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
     case PREDEF_TYPE_##Id##_ID: \
       T = Context.SingletonId; \
       break;
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    case PREDEF_TYPE_##Id##_ID: \
+      T = Context.Id##Ty; \
+      break;
+#include "clang/Basic/OpenCLExtensionTypes.def"
     case PREDEF_TYPE_SAMPLER_ID:
       T = Context.OCLSamplerTy;
       break;
     case PREDEF_TYPE_EVENT_ID:
       T = Context.OCLEventTy;
       break;
     case PREDEF_TYPE_CLK_EVENT_ID:
       T = Context.OCLClkEventTy;

lib/StaticAnalyzer/Core/ExprEngineC.cpp

switch (CastE->getCastKind()) {
       case CK_IntegralComplexCast:
       case CK_IntegralComplexToFloatingComplex:
       case CK_CPointerToObjCPointerCast:
       case CK_BlockPointerToObjCPointerCast:
       case CK_AnyPointerToBlockPointerCast:
       case CK_ObjCObjectLValueCast:
       case CK_ZeroToOCLEvent:
       case CK_ZeroToOCLQueue:
+      case CK_ZeroToOCLIntelSubgroupAVCType:
       case CK_IntToOCLSampler:
       case CK_LValueBitCast: {
         state =
             handleLValueBitCast(state, Ex, LCtx, T, ExTy, CastE, Bldr, Pred);
         continue;
       }
       case CK_IntegralCast: {
         // Delegate to SValBuilder to process.

test/CodeGenOpenCL/intel-subgroups-avc-ext-types.cl

+// RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=CL1.2 -cl-ext=+cl_intel_device_side_avc_motion_estimation -emit-llvm -o - -O0 | FileCheck %s
+
+// CHECK: %opencl.intel_sub_group_avc_mce_payload_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ime_payload_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ref_payload_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_sic_payload_t = type opaque
+
+// CHECK: %opencl.intel_sub_group_avc_mce_result_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ime_result_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ref_result_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_sic_result_t = type opaque
+
+// CHECK: %opencl.intel_sub_group_avc_ime_result_single_reference_streamout_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ime_result_dual_reference_streamout_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ime_single_reference_streamin_t = type opaque
+// CHECK: %opencl.intel_sub_group_avc_ime_dual_reference_streamin_t = type opaque
+
+// CHECK: store %opencl.intel_sub_group_avc_ime_payload_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ref_payload_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_sic_payload_t* null,
+
+// CHECK: store %opencl.intel_sub_group_avc_ime_result_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ref_result_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_sic_result_t* null,
+
+// CHECK: store %opencl.intel_sub_group_avc_ime_result_single_reference_streamout_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ime_result_dual_reference_streamout_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ime_single_reference_streamin_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ime_dual_reference_streamin_t* null,
+//
+// CHECK: store %opencl.intel_sub_group_avc_ime_payload_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ref_payload_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_sic_payload_t* null,
+
+// CHECK: store %opencl.intel_sub_group_avc_ime_result_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ref_result_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_sic_result_t* null,
+
+// CHECK: store %opencl.intel_sub_group_avc_ime_result_single_reference_streamout_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ime_result_dual_reference_streamout_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ime_single_reference_streamin_t* null,
+// CHECK: store %opencl.intel_sub_group_avc_ime_dual_reference_streamin_t* null,
+
+#pragma OPENCL EXTENSION cl_intel_device_side_avc_motion_estimation : enable
+
+// Having the initializers defined in the test allows us not to include default
+// opencl header, and thus reducing test execution time.
+// The initializers' values must match with ones defined in the default opencl
+// header (clang/lib/Headers/opencl-c.h)
+
+#define CLK_AVC_ME_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_PAYLOAD_INITIALIZE_INTEL 0x0
+#define CLK_AVC_REF_PAYLOAD_INITIALIZE_INTEL 0x0
+#define CLK_AVC_SIC_PAYLOAD_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_RESULT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_REF_RESULT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_SIC_RESULT_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMOUT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMIN_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMOUT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMIN_INITIALIZE_INTEL 0x0
+
+void foo() {
+  intel_sub_group_avc_mce_payload_t payload_mce; // No literal initializer for mce types
+  intel_sub_group_avc_ime_payload_t payload_ime = CLK_AVC_IME_PAYLOAD_INITIALIZE_INTEL;
+  intel_sub_group_avc_ref_payload_t payload_ref = CLK_AVC_REF_PAYLOAD_INITIALIZE_INTEL;
+  intel_sub_group_avc_sic_payload_t payload_sic = CLK_AVC_SIC_PAYLOAD_INITIALIZE_INTEL;
+
+  intel_sub_group_avc_mce_result_t result_mce; // No literal initializer for mce types
+  intel_sub_group_avc_ime_result_t result_ime = CLK_AVC_IME_RESULT_INITIALIZE_INTEL;
+  intel_sub_group_avc_ref_result_t result_ref = CLK_AVC_REF_RESULT_INITIALIZE_INTEL;
+  intel_sub_group_avc_sic_result_t result_sic = CLK_AVC_SIC_RESULT_INITIALIZE_INTEL;
+
+  intel_sub_group_avc_ime_result_single_reference_streamout_t sstreamout = CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMOUT_INITIALIZE_INTEL;
+  intel_sub_group_avc_ime_result_dual_reference_streamout_t dstreamout = CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMOUT_INITIALIZE_INTEL;
+  intel_sub_group_avc_ime_single_reference_streamin_t sstreamin = CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMIN_INITIALIZE_INTEL;
+  intel_sub_group_avc_ime_dual_reference_streamin_t dstreamin = CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMIN_INITIALIZE_INTEL;
+
+  // Initialization with initializer list was supported in the first version
+  // of the extension. So we check for backward compatibility here.
+  intel_sub_group_avc_ime_payload_t payload_ime_list = {0};
+  intel_sub_group_avc_ref_payload_t payload_ref_list = {0};
+  intel_sub_group_avc_sic_payload_t payload_sic_list = {0};
+
+  intel_sub_group_avc_ime_result_t result_ime_list = {0};
+  intel_sub_group_avc_ref_result_t result_ref_list = {0};
+  intel_sub_group_avc_sic_result_t result_sic_list = {0};
+
+  intel_sub_group_avc_ime_result_single_reference_streamout_t sstreamout_list = {0};
+  intel_sub_group_avc_ime_result_dual_reference_streamout_t dstreamout_list = {0};
+  intel_sub_group_avc_ime_single_reference_streamin_t sstreamin_list = {0};
+  intel_sub_group_avc_ime_dual_reference_streamin_t dstreamin_list = {0};
+}
+

test/Headers/opencl-c-header.cl

 // RUN: %clang_cc1 -triple amdgcn--amdhsa -O0 -emit-llvm -o - -cl-std=CL2.0 -finclude-default-header -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -ftime-report %s 2>&1 | FileCheck --check-prefix=CHECK20 --check-prefix=CHECK-MOD %s
 // RUN: chmod u-w %t 
 // RUN: %clang_cc1 -triple spir64-unknown-unknown -emit-llvm -o - -cl-std=CL1.2 -finclude-default-header -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -ftime-report %s 2>&1 | FileCheck --check-prefix=CHECK --check-prefix=CHECK-MOD %s
 // RUN: %clang_cc1 -triple amdgcn--amdhsa -O0 -emit-llvm -o - -cl-std=CL2.0 -finclude-default-header -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -ftime-report %s 2>&1 | FileCheck --check-prefix=CHECK20 --check-prefix=CHECK-MOD %s
 // RUN: chmod u+w %t
 
 // Verify that called builtins occur in the generated IR.
 
+// CHECK-NOT: intel_sub_group_avc_mce_get_default_inter_base_multi_reference_penalty
 // CHECK-NOT: ndrange_t
 // CHECK20: ndrange_t
 // CHECK: _Z16convert_char_rtec
 // CHECK-NOT: _Z3ctzc
 // CHECK20: _Z3ctzc
 // CHECK20-NOT: _Z16convert_char_rtec
 char f(char x) {
 #if __OPENCL_C_VERSION__ != CL_VERSION_2_0

test/Index/opencl-types.cl

void kernel testMiscOpenCLTypes() {
   queue_t scalarOCLQueue;
   reserve_id_t scalarOCLReserveID;
 }
 
 // CHECK: VarDecl=scalarOCLSampler:117:19 (Definition) [type=const sampler_t] [typekind=Typedef] const [canonicaltype=const sampler_t] [canonicaltypekind=OCLSampler] [isPOD=1]
 // CHECK: VarDecl=scalarOCLEvent:118:15 (Definition) [type=clk_event_t] [typekind=Typedef] [canonicaltype=clk_event_t] [canonicaltypekind=Unexposed] [isPOD=1]
 // CHECK: VarDecl=scalarOCLQueue:119:11 (Definition) [type=queue_t] [typekind=Typedef] [canonicaltype=queue_t] [canonicaltypekind=OCLQueue] [isPOD=1]
 // CHECK: VarDecl=scalarOCLReserveID:120:16 (Definition) [type=reserve_id_t] [typekind=Typedef] [canonicaltype=reserve_id_t] [canonicaltypekind=OCLReserveID] [isPOD=1]
+
+#pragma OPENCL EXTENSION cl_intel_device_side_avc_motion_estimation : enable
+
+void kernel testExtOpenCLTypes() {
+  intel_sub_group_avc_mce_payload_t mce_payload;
+}
+
+// CHECK: VarDecl=mce_payload:131:37 (Definition) [type=intel_sub_group_avc_mce_payload_t] [typekind=Typedef] [canonicaltype=intel_sub_group_avc_mce_payload_t] [canonicaltypekind=OCLIntelSubgroupAVCMcePayload] [isPOD=1]

test/SemaOpenCL/extension-version.cl

 #ifndef cl_intel_subgroups_short
 #error "Missing cl_intel_subgroups_short define"
 #endif
 #else
 // expected-warning@+2{{unsupported OpenCL extension 'cl_intel_subgroups_short' - ignoring}}
 #endif
 #pragma OPENCL EXTENSION cl_intel_subgroups_short : enable
 
+#if (__OPENCL_C_VERSION__ >= 120)
+#ifndef cl_intel_device_side_avc_motion_estimation
+#error "Missing cl_intel_device_side_avc_motion_estimation define"
+#endif
+#else
+// expected-warning@+2{{unsupported OpenCL extension 'cl_intel_device_side_avc_motion_estimation' - ignoring}}
+#endif
+#pragma OPENCL EXTENSION cl_intel_device_side_avc_motion_estimation : enable
+

test/SemaOpenCL/intel-subgroup-avc-ext-types.cl

+// RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=CL1.2 -cl-ext=+cl_intel_device_side_avc_motion_estimation -fsyntax-only -verify %s
+
+#pragma OPENCL EXTENSION cl_intel_device_side_avc_motion_estimation : enable
+
+// Having the initializers defined in the test allows us not to include default
+// opencl header, and thus reducing test execution time.
+// The initializers' values must match with ones defined in the default opencl
+// header (clang/lib/Headers/opencl-c.h)
+
+#define CLK_AVC_ME_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_PAYLOAD_INITIALIZE_INTEL 0x0
+#define CLK_AVC_REF_PAYLOAD_INITIALIZE_INTEL 0x0
+#define CLK_AVC_SIC_PAYLOAD_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_RESULT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_REF_RESULT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_SIC_RESULT_INITIALIZE_INTEL 0x0
+
+#define CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMOUT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMIN_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMOUT_INITIALIZE_INTEL 0x0
+#define CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMIN_INITIALIZE_INTEL 0x0
+
+struct st{};
+// negative test cases for initializers
+void foo(char c, float f, void* v, struct st ss) {
+  intel_sub_group_avc_mce_payload_t payload_mce = 0; // No zero initializer for mce types
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_mce_payload_t' with an expression of incompatible type 'int'}}
+  intel_sub_group_avc_ime_payload_t payload_ime = 1; // No literal initializer for *payload_t types
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ime_payload_t' with an expression of incompatible type 'int'}}
+  intel_sub_group_avc_ref_payload_t payload_ref = f;
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ref_payload_t' with an expression of incompatible type 'float'}}
+  intel_sub_group_avc_sic_payload_t payload_sic = ss;
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_sic_payload_t' with an expression of incompatible type 'struct st'}}
+
+  intel_sub_group_avc_mce_result_t result_mce = 0; // No zero initializer for mce types
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_mce_result_t' with an expression of incompatible type 'int'}}
+  intel_sub_group_avc_ime_result_t result_ime = 1; // No literal initializer for *result_t types
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ime_result_t' with an expression of incompatible type 'int'}}
+  intel_sub_group_avc_ref_result_t result_ref = f;
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ref_result_t' with an expression of incompatible type 'float'}}
+  intel_sub_group_avc_sic_result_t result_sic = ss;
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_sic_result_t' with an expression of incompatible type 'struct st'}}
+
+  intel_sub_group_avc_ime_result_single_reference_streamout_t sstreamout = v;
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ime_result_single_reference_streamout_t' with an expression of incompatible type 'void *'}}
+
+  intel_sub_group_avc_ime_result_dual_reference_streamout_t dstreamin_list = {0x0, 0x1};
+  // expected-warning@-1 {{excess elements in struct initializer}}
+  intel_sub_group_avc_ime_dual_reference_streamin_t dstreamin_list2 = {};
+  // expected-error@-1 {{scalar initializer cannot be empty}}
+  intel_sub_group_avc_ime_single_reference_streamin_t dstreamin_list3 = {c};
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ime_single_reference_streamin_t' with an expression of incompatible type 'char'}}
+  intel_sub_group_avc_ime_dual_reference_streamin_t dstreamin_list4 = {1};
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ime_dual_reference_streamin_t' with an expression of incompatible type 'int'}}
+}
+
+// negative tests for initializers and assignment
+void far() {
+  intel_sub_group_avc_mce_payload_t payload_mce;
+  intel_sub_group_avc_mce_payload_t payload_mce2 = payload_mce;
+
+  intel_sub_group_avc_ime_payload_t payload_ime;
+  intel_sub_group_avc_ref_payload_t payload_ref = payload_ime;
+  // expected-error@-1 {{initializing 'intel_sub_group_avc_ref_payload_t' with an expression of incompatible type 'intel_sub_group_avc_ime_payload_t'}}
+
+  intel_sub_group_avc_sic_result_t result_sic;
+  intel_sub_group_avc_ime_result_t result_ime;
+  result_sic = result_ime;
+  // expected-error@-1 {{assigning to 'intel_sub_group_avc_sic_result_t' from incompatible type 'intel_sub_group_avc_ime_result_t'}}
+}
+
+// positive test cases
+void bar() {
+  const sampler_t vme_sampler = CLK_AVC_ME_INITIALIZE_INTEL;
+
+  intel_sub_group_avc_mce_payload_t payload_mce; // No literal initializer for mce types
+  intel_sub_group_avc_ime_payload_t payload_ime = CLK_AVC_IME_PAYLOAD_INITIALIZE_INTEL;
+  intel_sub_group_avc_ref_payload_t payload_ref = CLK_AVC_REF_PAYLOAD_INITIALIZE_INTEL;
+  intel_sub_group_avc_sic_payload_t payload_sic = CLK_AVC_SIC_PAYLOAD_INITIALIZE_INTEL;
+
+  intel_sub_group_avc_mce_result_t result_mce; // No literal initializer for mce types
+  intel_sub_group_avc_ime_result_t result_ime = CLK_AVC_IME_RESULT_INITIALIZE_INTEL;
+  intel_sub_group_avc_ref_result_t result_ref = CLK_AVC_REF_RESULT_INITIALIZE_INTEL;
+  intel_sub_group_avc_sic_result_t result_sic = CLK_AVC_SIC_RESULT_INITIALIZE_INTEL;
+
+  intel_sub_group_avc_ime_result_single_reference_streamout_t sstreamout = CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMOUT_INITIALIZE_INTEL;
+  intel_sub_group_avc_ime_result_dual_reference_streamout_t dstreamout = CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMOUT_INITIALIZE_INTEL;
+  intel_sub_group_avc_ime_single_reference_streamin_t sstreamin = CLK_AVC_IME_RESULT_SINGLE_REFERENCE_STREAMIN_INITIALIZE_INTEL;
+  intel_sub_group_avc_ime_dual_reference_streamin_t dstreamin = CLK_AVC_IME_RESULT_DUAL_REFERENCE_STREAMIN_INITIALIZE_INTEL;
+
+  // It is allowed to assign variables of the same types
+  intel_sub_group_avc_mce_payload_t pauload_mce2 = payload_mce;
+
+  // Initialization with initializer list was supported in the first version
+  // of the extension. So we check for backward compatibility here.
+  intel_sub_group_avc_ime_payload_t payload_ime_list = {0};
+  intel_sub_group_avc_ref_payload_t payload_ref_list = {0};
+  intel_sub_group_avc_sic_payload_t payload_sic_list = {0};
+
+  intel_sub_group_avc_ime_result_t result_ime_list = {0};
+  intel_sub_group_avc_ref_result_t result_ref_list = {0};
+  intel_sub_group_avc_sic_result_t result_sic_list = {0};
+
+  intel_sub_group_avc_ime_result_single_reference_streamout_t sstreamout_list = {0};
+  intel_sub_group_avc_ime_result_dual_reference_streamout_t dstreamout_list = {0};
+  intel_sub_group_avc_ime_single_reference_streamin_t sstreamin_list = {0};
+  intel_sub_group_avc_ime_dual_reference_streamin_t dstreamin_list = {0};
+}
+

tools/libclang/CIndex.cpp

bool CursorVisitor::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
   switch (TL.getTypePtr()->getKind()) {
 
   case BuiltinType::Void:
   case BuiltinType::NullPtr:
   case BuiltinType::Dependent:
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
   case BuiltinType::Id:
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtTYpe, Id, Ext) \
+  case BuiltinType::Id:
+#include "clang/Basic/OpenCLExtensionTypes.def"
   case BuiltinType::OCLSampler:
   case BuiltinType::OCLEvent:
   case BuiltinType::OCLClkEvent:
   case BuiltinType::OCLQueue:
   case BuiltinType::OCLReserveID:
 #define BUILTIN_TYPE(Id, SingletonId)
 #define SIGNED_TYPE(Id, SingletonId) case BuiltinType::Id:
 #define UNSIGNED_TYPE(Id, SingletonId) case BuiltinType::Id:

tools/libclang/CXType.cpp

switch (BT->getKind()) {
     BTCASE(Overload);
     BTCASE(Dependent);
     BTCASE(ObjCId);
     BTCASE(ObjCClass);
     BTCASE(ObjCSel);
 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) BTCASE(Id);
 #include "clang/Basic/OpenCLImageTypes.def"
 #undef IMAGE_TYPE
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) BTCASE(Id);
+#include "clang/Basic/OpenCLExtensionTypes.def"
     BTCASE(OCLSampler);
     BTCASE(OCLEvent);
     BTCASE(OCLQueue);
     BTCASE(OCLReserveID);
   default:
     return CXType_Unexposed;
   }
 #undef BTCASE
switch (K) {
     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
+#define EXT_OPAQUE_TYPE(ExtTYpe, Id, Ext) TKIND(Id);
+#include "clang/Basic/OpenCLExtensionTypes.def"
     TKIND(OCLSampler);
     TKIND(OCLEvent);
     TKIND(OCLQueue);
     TKIND(OCLReserveID);
   }
 #undef TKIND
   return cxstring::createRef(s);
 }