Author: Helena Kotas
Date: 2024-10-15T13:38:15-07:00
New Revision: 3b4512074e8d2790794a49ea675f8a4af5817e60

URL: 
https://github.com/llvm/llvm-project/commit/3b4512074e8d2790794a49ea675f8a4af5817e60
DIFF: 
https://github.com/llvm/llvm-project/commit/3b4512074e8d2790794a49ea675f8a4af5817e60.diff

LOG: [HLSL] Make HLSLAttributedResourceType canonical and add code paths to 
convert HLSL types to DirectX target types (#110327)

Translates `RWBuffer` and `StructuredBuffer` resources buffer types to
DirectX target types `dx.TypedBuffer` and `dx.RawBuffer`.

Includes a change of `HLSLAttributesResourceType` from 'sugar' type to
full canonical type. This is required for codegen and other clang
infrastructure to work property on HLSL resource types.

Fixes #95952 (part 2/2)

Added: 
    

Modified: 
    clang/include/clang/AST/Type.h
    clang/include/clang/Basic/TypeNodes.td
    clang/lib/AST/ASTContext.cpp
    clang/lib/AST/ASTStructuralEquivalence.cpp
    clang/lib/AST/DeclCXX.cpp
    clang/lib/AST/ExprConstant.cpp
    clang/lib/AST/ItaniumMangle.cpp
    clang/lib/AST/MicrosoftMangle.cpp
    clang/lib/AST/Type.cpp
    clang/lib/CodeGen/CodeGenFunction.cpp
    clang/lib/CodeGen/CodeGenTypes.cpp
    clang/lib/CodeGen/ItaniumCXXABI.cpp
    clang/lib/CodeGen/Targets/DirectX.cpp
    clang/lib/Sema/HLSLExternalSemaSource.cpp
    clang/lib/Sema/SemaLookup.cpp
    clang/lib/Sema/SemaOverload.cpp
    clang/lib/Sema/SemaTemplate.cpp
    clang/lib/Sema/SemaTemplateDeduction.cpp
    clang/test/AST/HLSL/RWBuffer-AST.hlsl
    clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
    clang/test/CodeGenHLSL/builtins/RWBuffer-elementtype.hlsl
    clang/test/CodeGenHLSL/builtins/StructuredBuffer-elementtype.hlsl
    clang/test/CodeGenHLSL/builtins/hlsl_resource_t.hlsl
    clang/test/ParserHLSL/hlsl_contained_type_attr.hlsl
    clang/test/ParserHLSL/hlsl_is_rov_attr.hlsl
    clang/test/ParserHLSL/hlsl_raw_buffer_attr.hlsl
    clang/test/ParserHLSL/hlsl_resource_class_attr.hlsl
    clang/test/ParserHLSL/hlsl_resource_handle_attrs.hlsl

Removed: 
    


################################################################################
diff  --git a/clang/include/clang/AST/Type.h b/clang/include/clang/AST/Type.h
index 8ff04cf89a6b91..deda5b3f70f343 100644
--- a/clang/include/clang/AST/Type.h
+++ b/clang/include/clang/AST/Type.h
@@ -2662,6 +2662,7 @@ class alignas(TypeAlignment) Type : public 
ExtQualsTypeCommonBase {
 #include "clang/Basic/HLSLIntangibleTypes.def"
   bool isHLSLSpecificType() const; // Any HLSL specific type
   bool isHLSLIntangibleType() const; // Any HLSL intangible type
+  bool isHLSLAttributedResourceType() const;
 
   /// Determines if this type, which must satisfy
   /// isObjCLifetimeType(), is implicitly __unsafe_unretained rather
@@ -6270,6 +6271,14 @@ class HLSLAttributedResourceType : public Type, public 
llvm::FoldingSetNode {
         : ResourceClass(ResourceClass), IsROV(IsROV), RawBuffer(RawBuffer) {}
 
     Attributes() : Attributes(llvm::dxil::ResourceClass::UAV, false, false) {}
+
+    friend bool operator==(const Attributes &LHS, const Attributes &RHS) {
+      return std::tie(LHS.ResourceClass, LHS.IsROV, LHS.RawBuffer) ==
+             std::tie(RHS.ResourceClass, RHS.IsROV, RHS.RawBuffer);
+    }
+    friend bool operator!=(const Attributes &LHS, const Attributes &RHS) {
+      return !(LHS == RHS);
+    }
   };
 
 private:
@@ -6279,9 +6288,9 @@ class HLSLAttributedResourceType : public Type, public 
llvm::FoldingSetNode {
   QualType ContainedType;
   const Attributes Attrs;
 
-  HLSLAttributedResourceType(QualType Canon, QualType Wrapped,
-                             QualType Contained, const Attributes &Attrs)
-      : Type(HLSLAttributedResource, Canon,
+  HLSLAttributedResourceType(QualType Wrapped, QualType Contained,
+                             const Attributes &Attrs)
+      : Type(HLSLAttributedResource, QualType(),
              Contained.isNull() ? TypeDependence::None
                                 : Contained->getDependence()),
         WrappedType(Wrapped), ContainedType(Contained), Attrs(Attrs) {}
@@ -6289,10 +6298,11 @@ class HLSLAttributedResourceType : public Type, public 
llvm::FoldingSetNode {
 public:
   QualType getWrappedType() const { return WrappedType; }
   QualType getContainedType() const { return ContainedType; }
+  bool hasContainedType() const { return !ContainedType.isNull(); }
   const Attributes &getAttrs() const { return Attrs; }
 
-  bool isSugared() const { return true; }
-  QualType desugar() const { return getWrappedType(); }
+  bool isSugared() const { return false; }
+  QualType desugar() const { return QualType(this, 0); }
 
   void Profile(llvm::FoldingSetNodeID &ID) {
     Profile(ID, WrappedType, ContainedType, Attrs);
@@ -8436,17 +8446,19 @@ inline bool Type::isOpenCLSpecificType() const {
   }
 #include "clang/Basic/HLSLIntangibleTypes.def"
 
-inline bool Type::isHLSLSpecificType() const {
+inline bool Type::isHLSLIntangibleType() const {
 #define HLSL_INTANGIBLE_TYPE(Name, Id, SingletonId) is##Id##Type() ||
   return
 #include "clang/Basic/HLSLIntangibleTypes.def"
-      false; // end boolean or operation
+      isHLSLAttributedResourceType();
 }
 
-inline bool Type::isHLSLIntangibleType() const {
-  // All HLSL specific types are currently intangible type as well, but that
-  // might change in the future.
-  return isHLSLSpecificType();
+inline bool Type::isHLSLSpecificType() const {
+  return isHLSLIntangibleType() || isa<HLSLAttributedResourceType>(this);
+}
+
+inline bool Type::isHLSLAttributedResourceType() const {
+  return isa<HLSLAttributedResourceType>(this);
 }
 
 inline bool Type::isTemplateTypeParmType() const {

diff  --git a/clang/include/clang/Basic/TypeNodes.td 
b/clang/include/clang/Basic/TypeNodes.td
index 8cca392cddc174..7e550ca2992f35 100644
--- a/clang/include/clang/Basic/TypeNodes.td
+++ b/clang/include/clang/Basic/TypeNodes.td
@@ -93,7 +93,7 @@ def EnumType : TypeNode<TagType>, LeafType;
 def ElaboratedType : TypeNode<Type>, NeverCanonical;
 def AttributedType : TypeNode<Type>, NeverCanonical;
 def BTFTagAttributedType : TypeNode<Type>, NeverCanonical;
-def HLSLAttributedResourceType : TypeNode<Type>, NeverCanonical;
+def HLSLAttributedResourceType : TypeNode<Type>;
 def TemplateTypeParmType : TypeNode<Type>, AlwaysDependent, LeafType;
 def SubstTemplateTypeParmType : TypeNode<Type>, NeverCanonical;
 def SubstTemplateTypeParmPackType : TypeNode<Type>, AlwaysDependent;

diff  --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 034fbbe0bc7829..4bf8ddd762e9a5 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -3437,6 +3437,9 @@ static void encodeTypeForFunctionPointerAuth(const 
ASTContext &Ctx,
     OS << II->getLength() << II->getName();
     return;
   }
+  case Type::HLSLAttributedResource:
+    llvm_unreachable("should never get here");
+    break;
   case Type::DeducedTemplateSpecialization:
   case Type::Auto:
 #define NON_CANONICAL_TYPE(Class, Base) case Type::Class:
@@ -4108,6 +4111,7 @@ QualType ASTContext::getVariableArrayDecayedType(QualType 
type) const {
   case Type::BitInt:
   case Type::DependentBitInt:
   case Type::ArrayParameter:
+  case Type::HLSLAttributedResource:
     llvm_unreachable("type should never be variably-modified");
 
   // These types can be variably-modified but should never need to
@@ -5233,9 +5237,8 @@ QualType ASTContext::getHLSLAttributedResourceType(
   if (Ty)
     return QualType(Ty, 0);
 
-  QualType Canon = getCanonicalType(Wrapped);
   Ty = new (*this, alignof(HLSLAttributedResourceType))
-      HLSLAttributedResourceType(Canon, Wrapped, Contained, Attrs);
+      HLSLAttributedResourceType(Wrapped, Contained, Attrs);
 
   Types.push_back(Ty);
   HLSLAttributedResourceTypes.InsertNode(Ty, InsertPos);
@@ -9106,6 +9109,9 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, 
std::string &S,
   case Type::DeducedTemplateSpecialization:
     return;
 
+  case Type::HLSLAttributedResource:
+    llvm_unreachable("unexpected type");
+
   case Type::ArrayParameter:
   case Type::Pipe:
 #define ABSTRACT_TYPE(KIND, BASE)
@@ -11533,6 +11539,20 @@ QualType ASTContext::mergeTypes(QualType LHS, QualType 
RHS, bool OfBlockPointer,
       return {};
     return LHS;
   }
+  case Type::HLSLAttributedResource: {
+    const HLSLAttributedResourceType *LHSTy =
+        LHS->castAs<HLSLAttributedResourceType>();
+    const HLSLAttributedResourceType *RHSTy =
+        RHS->castAs<HLSLAttributedResourceType>();
+    assert(LHSTy->getWrappedType() == RHSTy->getWrappedType() &&
+           LHSTy->getWrappedType()->isHLSLResourceType() &&
+           "HLSLAttributedResourceType should always wrap __hlsl_resource_t");
+
+    if (LHSTy->getAttrs() == RHSTy->getAttrs() &&
+        LHSTy->getContainedType() == RHSTy->getContainedType())
+      return LHS;
+    return {};
+  }
   }
 
   llvm_unreachable("Invalid Type::Class!");
@@ -13368,6 +13388,7 @@ static QualType getCommonNonSugarTypeNode(ASTContext 
&Ctx, const Type *X,
     SUGAR_FREE_TYPE(Record)
     SUGAR_FREE_TYPE(SubstTemplateTypeParmPack)
     SUGAR_FREE_TYPE(UnresolvedUsing)
+    SUGAR_FREE_TYPE(HLSLAttributedResource)
 #undef SUGAR_FREE_TYPE
 #define NON_UNIQUE_TYPE(Class) UNEXPECTED_TYPE(Class, "non-unique")
     NON_UNIQUE_TYPE(TypeOfExpr)

diff  --git a/clang/lib/AST/ASTStructuralEquivalence.cpp 
b/clang/lib/AST/ASTStructuralEquivalence.cpp
index 21f0562f9d72ae..120ddc0f26c0d7 100644
--- a/clang/lib/AST/ASTStructuralEquivalence.cpp
+++ b/clang/lib/AST/ASTStructuralEquivalence.cpp
@@ -802,16 +802,6 @@ static bool 
IsEquivalentExceptionSpec(StructuralEquivalenceContext &Context,
   return true;
 }
 
-// Determine structural equivalence of two instances of
-// HLSLAttributedResourceType::Attributes
-static bool
-IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
-                         const HLSLAttributedResourceType::Attributes &Attrs1,
-                         const HLSLAttributedResourceType::Attributes &Attrs2) 
{
-  return std::tie(Attrs1.ResourceClass, Attrs1.IsROV, Attrs1.RawBuffer) ==
-         std::tie(Attrs2.ResourceClass, Attrs2.IsROV, Attrs2.RawBuffer);
-}
-
 /// Determine structural equivalence of two types.
 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
                                      QualType T1, QualType T2) {
@@ -1115,9 +1105,8 @@ static bool 
IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
             Context, cast<HLSLAttributedResourceType>(T1)->getContainedType(),
             cast<HLSLAttributedResourceType>(T2)->getContainedType()))
       return false;
-    if (!IsStructurallyEquivalent(
-            Context, cast<HLSLAttributedResourceType>(T1)->getAttrs(),
-            cast<HLSLAttributedResourceType>(T2)->getAttrs()))
+    if (cast<HLSLAttributedResourceType>(T1)->getAttrs() !=
+        cast<HLSLAttributedResourceType>(T2)->getAttrs())
       return false;
     break;
 

diff  --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index 407ec14bbc00d5..08615d4393f5d1 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -1411,10 +1411,10 @@ void CXXRecordDecl::addedMember(Decl *D) {
         Ty = Ty->getArrayElementTypeNoTypeQual();
 
       Ty = Ty->getUnqualifiedDesugaredType();
-      if (Ty->isBuiltinType())
-        data().IsHLSLIntangible |= Ty->isHLSLIntangibleType();
-      else if (const RecordType *RT = dyn_cast<RecordType>(Ty))
+      if (const RecordType *RT = dyn_cast<RecordType>(Ty))
         data().IsHLSLIntangible |= 
RT->getAsCXXRecordDecl()->isHLSLIntangible();
+      else
+        data().IsHLSLIntangible |= Ty->isHLSLIntangibleType();
     }
   }
 

diff  --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index 51956c631786b5..52a7f5778ce6d2 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -12167,6 +12167,7 @@ GCCTypeClass EvaluateBuiltinClassifyType(QualType T,
   case Type::ObjCInterface:
   case Type::ObjCObjectPointer:
   case Type::Pipe:
+  case Type::HLSLAttributedResource:
     // Classify all other types that don't fit into the regular
     // classification the same way.
     return GCCTypeClass::None;

diff  --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 777cdca1a0c0d7..d3ed35deb2b1d2 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -4512,6 +4512,38 @@ void CXXNameMangler::mangleType(const ArrayParameterType 
*T) {
   mangleType(cast<ConstantArrayType>(T));
 }
 
+void CXXNameMangler::mangleType(const HLSLAttributedResourceType *T) {
+  llvm::SmallString<64> Str("_Res");
+  const HLSLAttributedResourceType::Attributes &Attrs = T->getAttrs();
+  // map resource class to HLSL virtual register letter
+  switch (Attrs.ResourceClass) {
+  case llvm::dxil::ResourceClass::UAV:
+    Str += "_u";
+    break;
+  case llvm::dxil::ResourceClass::SRV:
+    Str += "_t";
+    break;
+  case llvm::dxil::ResourceClass::CBuffer:
+    Str += "_b";
+    break;
+  case llvm::dxil::ResourceClass::Sampler:
+    Str += "_s";
+    break;
+  }
+  if (Attrs.IsROV)
+    Str += "_ROV";
+  if (Attrs.RawBuffer)
+    Str += "_Raw";
+  if (T->hasContainedType())
+    Str += "_CT";
+  mangleVendorQualifier(Str);
+
+  if (T->hasContainedType()) {
+    mangleType(T->getContainedType());
+  }
+  mangleType(T->getWrappedType());
+}
+
 void CXXNameMangler::mangleIntegerLiteral(QualType T,
                                           const llvm::APSInt &Value) {
   //  <expr-primary> ::= L <type> <value number> E # integer literal

diff  --git a/clang/lib/AST/MicrosoftMangle.cpp 
b/clang/lib/AST/MicrosoftMangle.cpp
index 4ccf3f76bf0ce2..3931fcaa352961 100644
--- a/clang/lib/AST/MicrosoftMangle.cpp
+++ b/clang/lib/AST/MicrosoftMangle.cpp
@@ -3754,6 +3754,11 @@ void MicrosoftCXXNameMangler::mangleType(const 
DependentBitIntType *T,
   Error(Range.getBegin(), "DependentBitInt type") << Range;
 }
 
+void MicrosoftCXXNameMangler::mangleType(const HLSLAttributedResourceType *T,
+                                         Qualifiers, SourceRange Range) {
+  llvm_unreachable("HLSL uses Itanium name mangling");
+}
+
 // <this-adjustment> ::= <no-adjustment> | <static-adjustment> |
 //                       <virtual-adjustment>
 // <no-adjustment>      ::= A # private near

diff  --git a/clang/lib/AST/Type.cpp b/clang/lib/AST/Type.cpp
index 6f4958801cfe82..f013ed11d12935 100644
--- a/clang/lib/AST/Type.cpp
+++ b/clang/lib/AST/Type.cpp
@@ -4575,6 +4575,8 @@ static CachedProperties computeCachedProperties(const 
Type *T) {
     return Cache::get(cast<AtomicType>(T)->getValueType());
   case Type::Pipe:
     return Cache::get(cast<PipeType>(T)->getElementType());
+  case Type::HLSLAttributedResource:
+    return Cache::get(cast<HLSLAttributedResourceType>(T)->getWrappedType());
   }
 
   llvm_unreachable("unhandled type class");
@@ -4664,6 +4666,8 @@ LinkageInfo LinkageComputer::computeTypeLinkageInfo(const 
Type *T) {
     return computeTypeLinkageInfo(cast<AtomicType>(T)->getValueType());
   case Type::Pipe:
     return computeTypeLinkageInfo(cast<PipeType>(T)->getElementType());
+  case Type::HLSLAttributedResource:
+    llvm_unreachable("not yet implemented");
   }
 
   llvm_unreachable("unhandled type class");
@@ -4846,6 +4850,7 @@ bool Type::canHaveNullability(bool ResultIfUnknown) const 
{
   case Type::BitInt:
   case Type::DependentBitInt:
   case Type::ArrayParameter:
+  case Type::HLSLAttributedResource:
     return false;
   }
   llvm_unreachable("bad type kind!");

diff  --git a/clang/lib/CodeGen/CodeGenFunction.cpp 
b/clang/lib/CodeGen/CodeGenFunction.cpp
index f3023c7a20c405..2306043c90f406 100644
--- a/clang/lib/CodeGen/CodeGenFunction.cpp
+++ b/clang/lib/CodeGen/CodeGenFunction.cpp
@@ -282,6 +282,7 @@ TypeEvaluationKind 
CodeGenFunction::getEvaluationKind(QualType type) {
     case Type::ObjCObjectPointer:
     case Type::Pipe:
     case Type::BitInt:
+    case Type::HLSLAttributedResource:
       return TEK_Scalar;
 
     // Complexes.

diff  --git a/clang/lib/CodeGen/CodeGenTypes.cpp 
b/clang/lib/CodeGen/CodeGenTypes.cpp
index 339632090a5b71..54aa1d59d351af 100644
--- a/clang/lib/CodeGen/CodeGenTypes.cpp
+++ b/clang/lib/CodeGen/CodeGenTypes.cpp
@@ -743,6 +743,9 @@ llvm::Type *CodeGenTypes::ConvertType(QualType T) {
     ResultType = llvm::Type::getIntNTy(getLLVMContext(), EIT->getNumBits());
     break;
   }
+  case Type::HLSLAttributedResource:
+    ResultType = CGM.getHLSLRuntime().convertHLSLSpecificType(Ty);
+    break;
   }
 
   assert(ResultType && "Didn't convert a type?");

diff  --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp 
b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index 75dab596e1b2c4..3cc17ebaacd982 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -3947,6 +3947,9 @@ void ItaniumRTTIBuilder::BuildVTablePointer(const Type 
*Ty) {
     // abi::__pointer_to_member_type_info.
     VTableName = "_ZTVN10__cxxabiv129__pointer_to_member_type_infoE";
     break;
+
+  case Type::HLSLAttributedResource:
+    llvm_unreachable("HLSL doesn't support virtual functions");
   }
 
   llvm::Constant *VTable = nullptr;
@@ -4209,6 +4212,9 @@ llvm::Constant *ItaniumRTTIBuilder::BuildTypeInfo(
   case Type::Atomic:
     // No fields, at least for the moment.
     break;
+
+  case Type::HLSLAttributedResource:
+    llvm_unreachable("HLSL doesn't support RTTI");
   }
 
   llvm::Constant *Init = llvm::ConstantStruct::getAnon(Fields);

diff  --git a/clang/lib/CodeGen/Targets/DirectX.cpp 
b/clang/lib/CodeGen/Targets/DirectX.cpp
index 13da2c630629d7..303a4309d62fcf 100644
--- a/clang/lib/CodeGen/Targets/DirectX.cpp
+++ b/clang/lib/CodeGen/Targets/DirectX.cpp
@@ -29,19 +29,40 @@ class DirectXTargetCodeGenInfo : public TargetCodeGenInfo {
 
 llvm::Type *DirectXTargetCodeGenInfo::getHLSLType(CodeGenModule &CGM,
                                                   const Type *Ty) const {
-  auto *BuiltinTy = dyn_cast<BuiltinType>(Ty);
-  if (!BuiltinTy || BuiltinTy->getKind() != BuiltinType::HLSLResource)
+  auto *ResType = dyn_cast<HLSLAttributedResourceType>(Ty);
+  if (!ResType)
     return nullptr;
 
   llvm::LLVMContext &Ctx = CGM.getLLVMContext();
-  // FIXME: translate __hlsl_resource_t to target("dx.TypedBuffer", <4 x 
float>,
-  // 1, 0, 0) only for now (RWBuffer<float4>); more work us needed to determine
-  // the target ext type and its parameters based on the handle type
-  // attributes (not yet implemented)
-  llvm::FixedVectorType *ElemType =
-      llvm::FixedVectorType::get(llvm::Type::getFloatTy(Ctx), 4);
-  unsigned Flags[] = {/*IsWriteable*/ 1, /*IsROV*/ 0, /*IsSigned*/ 0};
-  return llvm::TargetExtType::get(Ctx, "dx.TypedBuffer", {ElemType}, Flags);
+  const HLSLAttributedResourceType::Attributes &ResAttrs = ResType->getAttrs();
+  switch (ResAttrs.ResourceClass) {
+  case llvm::dxil::ResourceClass::UAV:
+  case llvm::dxil::ResourceClass::SRV: {
+    // TypedBuffer and RawBuffer both need element type
+    QualType ContainedTy = ResType->getContainedType();
+    if (ContainedTy.isNull())
+      return nullptr;
+
+    // convert element type
+    llvm::Type *ElemType = CGM.getTypes().ConvertType(ContainedTy);
+
+    llvm::StringRef TypeName =
+        ResAttrs.RawBuffer ? "dx.RawBuffer" : "dx.TypedBuffer";
+    SmallVector<unsigned, 3> Ints = {/*IsWriteable*/ ResAttrs.ResourceClass ==
+                                         llvm::dxil::ResourceClass::UAV,
+                                     /*IsROV*/ ResAttrs.IsROV};
+    if (!ResAttrs.RawBuffer)
+      Ints.push_back(/*IsSigned*/ ContainedTy->isSignedIntegerType());
+
+    return llvm::TargetExtType::get(Ctx, TypeName, {ElemType}, Ints);
+  }
+  case llvm::dxil::ResourceClass::CBuffer:
+    llvm_unreachable("dx.CBuffer handles are not implemented yet");
+    break;
+  case llvm::dxil::ResourceClass::Sampler:
+    llvm_unreachable("dx.Sampler handles are not implemented yet");
+    break;
+  }
 }
 
 } // namespace

diff  --git a/clang/lib/Sema/HLSLExternalSemaSource.cpp 
b/clang/lib/Sema/HLSLExternalSemaSource.cpp
index 2913d16fca4823..5f51047b4d7b12 100644
--- a/clang/lib/Sema/HLSLExternalSemaSource.cpp
+++ b/clang/lib/Sema/HLSLExternalSemaSource.cpp
@@ -208,8 +208,6 @@ struct BuiltinTypeDeclBuilder {
   BuiltinTypeDeclBuilder &addArraySubscriptOperator(bool IsConst) {
     if (Record->isCompleteDefinition())
       return *this;
-    assert(Fields.count("h") > 0 &&
-           "Subscript operator must be added after the handle.");
 
     ASTContext &AST = Record->getASTContext();
     QualType ElemTy = AST.Char8Ty;

diff  --git a/clang/lib/Sema/SemaLookup.cpp b/clang/lib/Sema/SemaLookup.cpp
index f3f62474d06441..e5db11369221a4 100644
--- a/clang/lib/Sema/SemaLookup.cpp
+++ b/clang/lib/Sema/SemaLookup.cpp
@@ -3215,6 +3215,9 @@ addAssociatedClassesAndNamespaces(AssociatedLookup 
&Result, QualType Ty) {
     // Array parameter types are treated as fundamental types.
     case Type::ArrayParameter:
       break;
+
+    case Type::HLSLAttributedResource:
+      T = cast<HLSLAttributedResourceType>(T)->getWrappedType().getTypePtr();
     }
 
     if (Queue.empty())

diff  --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 1205e85b4e6f53..7b86299561a365 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -1798,6 +1798,23 @@ TryImplicitConversion(Sema &S, Expr *From, QualType 
ToType,
     return ICS;
   }
 
+  if (S.getLangOpts().HLSL && ToType->isHLSLAttributedResourceType() &&
+      FromType->isHLSLAttributedResourceType()) {
+    auto *ToResType = cast<HLSLAttributedResourceType>(ToType);
+    auto *FromResType = cast<HLSLAttributedResourceType>(FromType);
+    if (S.Context.hasSameUnqualifiedType(ToResType->getWrappedType(),
+                                         FromResType->getWrappedType()) &&
+        S.Context.hasSameUnqualifiedType(ToResType->getContainedType(),
+                                         FromResType->getContainedType()) &&
+        ToResType->getAttrs() == FromResType->getAttrs()) {
+      ICS.setStandard();
+      ICS.Standard.setAsIdentityConversion();
+      ICS.Standard.setFromType(FromType);
+      ICS.Standard.setAllToTypes(ToType);
+      return ICS;
+    }
+  }
+
   return TryUserDefinedConversion(S, From, ToType, SuppressUserConversions,
                                   AllowExplicit, InOverloadResolution, CStyle,
                                   AllowObjCWritebackConversion,

diff  --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 294eb8e3353cde..62f13610b5285c 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -6074,6 +6074,13 @@ bool 
UnnamedLocalNoLinkageFinder::VisitNestedNameSpecifier(
   llvm_unreachable("Invalid NestedNameSpecifier::Kind!");
 }
 
+bool UnnamedLocalNoLinkageFinder::VisitHLSLAttributedResourceType(
+    const HLSLAttributedResourceType *T) {
+  if (T->hasContainedType() && Visit(T->getContainedType()))
+    return true;
+  return Visit(T->getWrappedType());
+}
+
 bool Sema::CheckTemplateArgument(TypeSourceInfo *ArgInfo) {
   assert(ArgInfo && "invalid TypeSourceInfo");
   QualType Arg = ArgInfo->getType();

diff  --git a/clang/lib/Sema/SemaTemplateDeduction.cpp 
b/clang/lib/Sema/SemaTemplateDeduction.cpp
index 7cfb8d687c796a..db1d7fa237131a 100644
--- a/clang/lib/Sema/SemaTemplateDeduction.cpp
+++ b/clang/lib/Sema/SemaTemplateDeduction.cpp
@@ -2449,6 +2449,7 @@ static TemplateDeductionResult 
DeduceTemplateArgumentsByTypeMatch(
     case Type::PackExpansion:
     case Type::Pipe:
     case Type::ArrayParameter:
+    case Type::HLSLAttributedResource:
       // No template argument deduction for these types
       return TemplateDeductionResult::Success;
 
@@ -6844,6 +6845,16 @@ MarkUsedTemplateParameters(ASTContext &Ctx, QualType T,
                                OnlyDeduced, Depth, Used);
     break;
 
+  case Type::HLSLAttributedResource:
+    MarkUsedTemplateParameters(
+        Ctx, cast<HLSLAttributedResourceType>(T)->getWrappedType(), 
OnlyDeduced,
+        Depth, Used);
+    if (cast<HLSLAttributedResourceType>(T)->hasContainedType())
+      MarkUsedTemplateParameters(
+          Ctx, cast<HLSLAttributedResourceType>(T)->getContainedType(),
+          OnlyDeduced, Depth, Used);
+    break;
+
   // None of these types have any template parameters in them.
   case Type::Builtin:
   case Type::VariableArray:

diff  --git a/clang/test/AST/HLSL/RWBuffer-AST.hlsl 
b/clang/test/AST/HLSL/RWBuffer-AST.hlsl
index 55c0dfa2eaa533..e6ce73dbd962f7 100644
--- a/clang/test/AST/HLSL/RWBuffer-AST.hlsl
+++ b/clang/test/AST/HLSL/RWBuffer-AST.hlsl
@@ -32,7 +32,6 @@ RWBuffer<float> Buffer;
 // CHECK-NEXT: FieldDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> 
implicit h '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 // CHECK-NEXT: HLSLResourceAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit 
TypedBuffer
 
 // CHECK: CXXMethodDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> 
operator[] 'element_type &const (unsigned int) const'
@@ -59,5 +58,4 @@ RWBuffer<float> Buffer;
 // CHECK-NEXT: FieldDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> 
implicit h '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]] 
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(float)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 // CHECK-NEXT: HLSLResourceAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit 
TypedBuffer

diff  --git a/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl 
b/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
index b31db8ce59f224..030fcfc31691dc 100644
--- a/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
+++ b/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
@@ -34,7 +34,6 @@ StructuredBuffer<float> Buffer;
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 // CHECK-NEXT: HLSLResourceAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit 
TypedBuffer
 
 // CHECK: CXXMethodDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> 
operator[] 'element_type &const (unsigned int) const'
@@ -62,5 +61,4 @@ StructuredBuffer<float> Buffer;
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(float)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 // CHECK-NEXT: HLSLResourceAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit 
TypedBuffer

diff  --git a/clang/test/CodeGenHLSL/builtins/RWBuffer-elementtype.hlsl 
b/clang/test/CodeGenHLSL/builtins/RWBuffer-elementtype.hlsl
index eca4f1598fd658..fa81b53fd9bddc 100644
--- a/clang/test/CodeGenHLSL/builtins/RWBuffer-elementtype.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/RWBuffer-elementtype.hlsl
@@ -1,5 +1,23 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.2-compute 
-finclude-default-header -fnative-half-type -emit-llvm -o - %s | FileCheck %s
 
+// NOTE: The type name number and whether the struct is packed or not will 
mostly
+// likely change once subscript operators are properly implemented 
(llvm/llvm-project#95956) 
+// and theinterim field of the contained type is removed.
+
+// CHECK: %"class.hlsl::RWBuffer" = type <{ target("dx.TypedBuffer", i16, 1, 
0, 1)
+// CHECK: %"class.hlsl::RWBuffer.0" = type <{ target("dx.TypedBuffer", i16, 1, 
0, 0)
+// CHECK: %"class.hlsl::RWBuffer.2" = type { target("dx.TypedBuffer", i32, 1, 
0, 1)
+// CHECK: %"class.hlsl::RWBuffer.3" = type { target("dx.TypedBuffer", i32, 1, 
0, 0)
+// CHECK: %"class.hlsl::RWBuffer.4" = type { target("dx.TypedBuffer", i64, 1, 
0, 1)
+// CHECK: %"class.hlsl::RWBuffer.5" = type { target("dx.TypedBuffer", i64, 1, 
0, 0)
+// CHECK: %"class.hlsl::RWBuffer.6" = type <{ target("dx.TypedBuffer", half, 
1, 0, 0)
+// CHECK: %"class.hlsl::RWBuffer.8" = type { target("dx.TypedBuffer", float, 
1, 0, 0)
+// CHECK: %"class.hlsl::RWBuffer.9" = type { target("dx.TypedBuffer", double, 
1, 0, 0)
+// CHECK: %"class.hlsl::RWBuffer.10" = type { target("dx.TypedBuffer", <4 x 
i16>, 1, 0, 0)
+// CHECK: %"class.hlsl::RWBuffer.11" = type { target("dx.TypedBuffer", <3 x 
i32>, 1, 0, 0)
+// CHECK: %"class.hlsl::RWBuffer.12" = type { target("dx.TypedBuffer", <2 x 
half>, 1, 0, 0)
+// CHECK: %"class.hlsl::RWBuffer.13" = type { target("dx.TypedBuffer", <3 x 
float>, 1, 0, 0)
+
 RWBuffer<int16_t> BufI16;
 RWBuffer<uint16_t> BufU16;
 RWBuffer<int> BufI32;

diff  --git a/clang/test/CodeGenHLSL/builtins/StructuredBuffer-elementtype.hlsl 
b/clang/test/CodeGenHLSL/builtins/StructuredBuffer-elementtype.hlsl
index 326885efbeeaba..a99c7f98a1afb6 100644
--- a/clang/test/CodeGenHLSL/builtins/StructuredBuffer-elementtype.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/StructuredBuffer-elementtype.hlsl
@@ -1,5 +1,23 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.2-compute 
-finclude-default-header -fnative-half-type -emit-llvm -o - %s | FileCheck %s
 
+// NOTE: The number in type name and whether the struct is packed or not will 
mostly
+// likely change once subscript operators are properly implemented 
(llvm/llvm-project#95956) 
+// and theinterim field of the contained type is removed.
+
+// CHECK: %"class.hlsl::StructuredBuffer" = type <{ target("dx.RawBuffer", 
i16, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.0" = type <{ target("dx.RawBuffer", 
i16, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.2" = type { target("dx.RawBuffer", 
i32, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.3" = type { target("dx.RawBuffer", 
i32, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.4" = type { target("dx.RawBuffer", 
i64, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.5" = type { target("dx.RawBuffer", 
i64, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.6" = type <{ target("dx.RawBuffer", 
half, 1, 0) 
+// CHECK: %"class.hlsl::StructuredBuffer.8" = type { target("dx.RawBuffer", 
float, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.9" = type { target("dx.RawBuffer", 
double, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.10" = type { target("dx.RawBuffer", 
<4 x i16>, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.11" = type { target("dx.RawBuffer", 
<3 x i32>, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.12" = type { target("dx.RawBuffer", 
<2 x half>, 1, 0)
+// CHECK: %"class.hlsl::StructuredBuffer.13" = type { target("dx.RawBuffer", 
<3 x float>, 1, 0)
+
 StructuredBuffer<int16_t> BufI16;
 StructuredBuffer<uint16_t> BufU16;
 StructuredBuffer<int> BufI32;

diff  --git a/clang/test/CodeGenHLSL/builtins/hlsl_resource_t.hlsl 
b/clang/test/CodeGenHLSL/builtins/hlsl_resource_t.hlsl
index e735a85b589f87..6751cf2703ce0e 100644
--- a/clang/test/CodeGenHLSL/builtins/hlsl_resource_t.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/hlsl_resource_t.hlsl
@@ -1,9 +1,53 @@
-// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -emit-llvm 
-O1 -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library 
-finclude-default-header -x hlsl -emit-llvm -o - %s | FileCheck %s
 
-void foo(__hlsl_resource_t res);
+using handle_float_t = __hlsl_resource_t [[hlsl::resource_class(UAV)]] 
[[hlsl::contained_type(float)]];
 
-// CHECK: define void @_Z3baru17__hlsl_resource_t(target("dx.TypedBuffer", <4 
x float>, 1, 0, 0) %[[PARAM:[a-zA-Z0-9]+]])
-// CHECK: call void @_Z3foou17__hlsl_resource_t(target("dx.TypedBuffer", <4 x 
float>, 1, 0, 0) %[[PARAM]])
-void bar(__hlsl_resource_t a) {
-    foo(a);
+// CHECK: %"class.hlsl::RWBuffer" = type { target("dx.TypedBuffer", <4 x 
float>, 1, 0, 0)
+// CHECK: %"class.hlsl::StructuredBuffer" = type { target("dx.RawBuffer", 
%struct.MyStruct = type { <4 x float>, <2 x i32>, [8 x i8] }, 1, 0)
+
+// CHECK: define void 
@_Z2faU9_Res_u_CTfu17__hlsl_resource_t(target("dx.TypedBuffer", float, 1, 0, 0) 
%a)
+// CHECK: call void 
@_Z4foo1U9_Res_u_CTfu17__hlsl_resource_t(target("dx.TypedBuffer", float, 1, 0, 
0) %0)
+// CHECK: declare void 
@_Z4foo1U9_Res_u_CTfu17__hlsl_resource_t(target("dx.TypedBuffer", float, 1, 0, 
0))
+
+void foo1(handle_float_t res);
+
+void fa(handle_float_t a) {
+    foo1(a);
+}
+
+// CHECK: define void 
@_Z2fbU9_Res_u_CTfu17__hlsl_resource_t(target("dx.TypedBuffer", float, 1, 0, 0) 
%a)
+void fb(handle_float_t a) {
+    handle_float_t b = a;
 }
+
+// CHECK: define void @_Z2fcN4hlsl8RWBufferIDv4_fEE(ptr noundef 
byval(%"class.hlsl::RWBuffer") align 16 %a)
+// CHECK: call void @_Z4foo2N4hlsl8RWBufferIDv4_fEE(ptr noundef 
byval(%"class.hlsl::RWBuffer") align 16 %agg.tmp)
+// CHECK: declare void @_Z4foo2N4hlsl8RWBufferIDv4_fEE(ptr noundef 
byval(%"class.hlsl::RWBuffer") align 16)
+void foo2(RWBuffer<float4> buf);
+
+void fc(RWBuffer<float4> a) {
+  foo2(a);
+}
+
+void fd(RWBuffer<float4> a) {
+  RWBuffer<float4> b = a;
+}
+
+struct MyStruct {
+  float4 f;
+  int2 i;
+};
+
+// CHECK: define void @_Z2feN4hlsl16StructuredBufferI8MyStructEE(ptr noundef 
byval(%"class.hlsl::StructuredBuffer") align 16 %a)
+// CHECK: call void @_Z4foo3N4hlsl16StructuredBufferI8MyStructEE(ptr noundef 
byval(%"class.hlsl::StructuredBuffer") align 16 %agg.tmp)
+// CHECK: declare void @_Z4foo3N4hlsl16StructuredBufferI8MyStructEE(ptr 
noundef byval(%"class.hlsl::StructuredBuffer") align 16)
+void foo3(StructuredBuffer<MyStruct> buf);
+
+void fe(StructuredBuffer<MyStruct> a) {
+  foo3(a);
+}
+
+void ff(StructuredBuffer<MyStruct> a) {
+  StructuredBuffer<MyStruct> b = a;
+}
+

diff  --git a/clang/test/ParserHLSL/hlsl_contained_type_attr.hlsl 
b/clang/test/ParserHLSL/hlsl_contained_type_attr.hlsl
index 2b7bd31023222e..5a72aa242e581d 100644
--- a/clang/test/ParserHLSL/hlsl_contained_type_attr.hlsl
+++ b/clang/test/ParserHLSL/hlsl_contained_type_attr.hlsl
@@ -2,27 +2,24 @@
 
 typedef vector<float, 4> float4;
 
-// CHECK: -TypeAliasDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 5]]:1, col:83>
+// CHECK: -TypeAliasDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, col:83>
 // CHECK: -HLSLAttributedResourceType 0x{{[0-9a-f]+}} '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(int)]]
-// CHECK-SAME: ' sugar
 using ResourceIntAliasT = __hlsl_resource_t [[hlsl::resource_class(UAV)]] 
[[hlsl::contained_type(int)]];
 ResourceIntAliasT h1;
 
-// CHECK: -VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, col:82> col:82 h2 
'__hlsl_resource_t 
+// CHECK: -VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:1, col:82> col:82 h2 
'__hlsl_resource_t 
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(float4)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 __hlsl_resource_t [[hlsl::resource_class(UAV)]] 
[[hlsl::contained_type(float4)]] h2;
 
-// CHECK: ClassTemplateDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 7]]:1, line:[[# 
@LINE + 9]]:1> line:[[# @LINE + 7]]:30 S
+// CHECK: ClassTemplateDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 6]]:1, line:[[# 
@LINE + 8]]:1> line:[[# @LINE + 6]]:30 S
 // CHECK: TemplateTypeParmDecl 0x{{[0-9a-f]+}} <col:11, col:20> col:20 
referenced typename depth 0 index 0 T
-// CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} <col:23, line:[[# @LINE + 7]]:1> 
line:[[# @LINE + 5]]:30 struct S definition
-// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 5]]:3, col:79> col:79 h 
'__hlsl_resource_t
+// CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} <col:23, line:[[# @LINE + 6]]:1> 
line:[[# @LINE + 4]]:30 struct S definition
+// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:3, col:79> col:79 h 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(T)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 template <typename T> struct S {
   __hlsl_resource_t [[hlsl::resource_class(UAV)]] [[hlsl::contained_type(T)]] 
h;
 };

diff  --git a/clang/test/ParserHLSL/hlsl_is_rov_attr.hlsl 
b/clang/test/ParserHLSL/hlsl_is_rov_attr.hlsl
index fdf2aacf4a4ded..836d129c8d0002 100644
--- a/clang/test/ParserHLSL/hlsl_is_rov_attr.hlsl
+++ b/clang/test/ParserHLSL/hlsl_is_rov_attr.hlsl
@@ -1,25 +1,22 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -x hlsl -ast-dump -o 
- %s | FileCheck %s
 
 // CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} {{.*}} struct MyBuffer definition
-// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 5]]:3, col:68> col:68 h 
'__hlsl_resource_t
+// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:3, col:68> col:68 h 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::is_rov]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 struct MyBuffer {
   __hlsl_resource_t [[hlsl::resource_class(UAV)]] [[hlsl::is_rov]] h;
 };
 
-// CHECK: VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, col:66> col:66 res 
'__hlsl_resource_t
+// CHECK: VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:1, col:66> col:66 res 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::is_rov]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 __hlsl_resource_t [[hlsl::is_rov]] [[hlsl::resource_class(SRV)]] res;
 
-// CHECK: FunctionDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 5]]:1, line:[[# @LINE 
+ 7]]:1> line:[[# @LINE + 5]]:6 f 'void ()
+// CHECK: FunctionDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, line:[[# @LINE 
+ 6]]:1> line:[[# @LINE + 4]]:6 f 'void ()
 // CHECK: VarDecl 0x{{[0-9a-f]+}} <col:3, col:72> col:72 r '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
 // CHECK-SAME{LITERAL}: [[hlsl::is_rov]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 void f() {
   __hlsl_resource_t [[hlsl::resource_class(Sampler)]] [[hlsl::is_rov]] r;
 }

diff  --git a/clang/test/ParserHLSL/hlsl_raw_buffer_attr.hlsl 
b/clang/test/ParserHLSL/hlsl_raw_buffer_attr.hlsl
index 71bf300ee7aec5..84c924eec24efc 100644
--- a/clang/test/ParserHLSL/hlsl_raw_buffer_attr.hlsl
+++ b/clang/test/ParserHLSL/hlsl_raw_buffer_attr.hlsl
@@ -1,25 +1,22 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -x hlsl -ast-dump -o 
- %s | FileCheck %s
 
 // CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} {{.*}} struct MyBuffer definition
-// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 5]]:3, col:72> col:72 h1 
'__hlsl_resource_t
+// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:3, col:72> col:72 h1 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 struct MyBuffer {
   __hlsl_resource_t [[hlsl::resource_class(UAV)]] [[hlsl::raw_buffer]] h1;
 };
 
-// CHECK: VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, col:70> col:70 h2 
'__hlsl_resource_t
+// CHECK: VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:1, col:70> col:70 h2 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 __hlsl_resource_t [[hlsl::raw_buffer]] [[hlsl::resource_class(SRV)]] h2;
 
-// CHECK: FunctionDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 5]]:1, line:[[# @LINE 
+ 7]]:1> line:[[# @LINE + 5]]:6 f 'void ()
+// CHECK: FunctionDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, line:[[# @LINE 
+ 6]]:1> line:[[# @LINE + 4]]:6 f 'void ()
 // CHECK: VarDecl 0x{{[0-9a-f]+}} <col:3, col:72> col:72 h3 '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 void f() {
   __hlsl_resource_t [[hlsl::resource_class(UAV)]] [[hlsl::raw_buffer]] h3;
 }

diff  --git a/clang/test/ParserHLSL/hlsl_resource_class_attr.hlsl 
b/clang/test/ParserHLSL/hlsl_resource_class_attr.hlsl
index 305fd95ab1ebc7..fbada8b4b99f75 100644
--- a/clang/test/ParserHLSL/hlsl_resource_class_attr.hlsl
+++ b/clang/test/ParserHLSL/hlsl_resource_class_attr.hlsl
@@ -1,33 +1,29 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -x hlsl -ast-dump -o 
- %s | FileCheck %s
 
 // CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} {{.*}} struct MyBuffer definition
-// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:3, col:51> col:51 h 
'__hlsl_resource_t
+// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:3, col:51> col:51 h 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 struct MyBuffer {
   __hlsl_resource_t [[hlsl::resource_class(UAV)]] h;
 };
 
-// CHECK: VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:1, col:49> col:49 res 
'__hlsl_resource_t
+// CHECK: VarDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 2]]:1, col:49> col:49 res 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(SRV)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 __hlsl_resource_t [[hlsl::resource_class(SRV)]] res;
 
-// CHECK: FunctionDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:1, line:[[# @LINE 
+ 6]]:1> line:[[# @LINE + 4]]:6 f 'void ()
+// CHECK: FunctionDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:1, line:[[# @LINE 
+ 5]]:1> line:[[# @LINE + 3]]:6 f 'void ()
 // CHECK: VarDecl 0x{{[0-9a-f]+}} <col:3, col:55> col:55 r '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(Sampler)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 void f() {
   __hlsl_resource_t [[hlsl::resource_class(Sampler)]] r;
 }
 
-// CHECK: ClassTemplateDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 7]]:1, line:[[# 
@LINE + 9]]:1> line:[[# @LINE + 7]]:29 MyBuffer2
+// CHECK: ClassTemplateDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 6]]:1, line:[[# 
@LINE + 8]]:1> line:[[# @LINE + 6]]:29 MyBuffer2
 // CHECK: TemplateTypeParmDecl 0x{{[0-9a-f]+}} <col:10, col:19> col:19 
typename depth 0 index 0 T
-// CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} <col:22, line:[[# @LINE + 7]]:1> 
line:[[# @LINE + 5]]:29 struct MyBuffer2 definition
+// CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} <col:22, line:[[# @LINE + 6]]:1> 
line:[[# @LINE + 4]]:29 struct MyBuffer2 definition
 // CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} <col:22, col:29> col:29 implicit 
struct MyBuffer2
-// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 4]]:3, col:51> col:51 h 
'__hlsl_resource_t
+// CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE + 3]]:3, col:51> col:51 h 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 template<typename T> struct MyBuffer2 {
   __hlsl_resource_t [[hlsl::resource_class(UAV)]] h;
 };
@@ -38,5 +34,4 @@ template<typename T> struct MyBuffer2 {
 // CHECK: CXXRecordDecl 0x{{[0-9a-f]+}} <col:22, col:29> col:29 implicit 
struct MyBuffer2
 // CHECK: FieldDecl 0x{{[0-9a-f]+}} <line:[[# @LINE - 7]]:3, col:51> col:51 h 
'__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 MyBuffer2<float> myBuffer2;

diff  --git a/clang/test/ParserHLSL/hlsl_resource_handle_attrs.hlsl 
b/clang/test/ParserHLSL/hlsl_resource_handle_attrs.hlsl
index e7d19c3da7216d..38d27bc21e4aa8 100644
--- a/clang/test/ParserHLSL/hlsl_resource_handle_attrs.hlsl
+++ b/clang/test/ParserHLSL/hlsl_resource_handle_attrs.hlsl
@@ -6,7 +6,6 @@
 // CHECK: -FieldDecl 0x{{[0-9a-f]+}} <<invalid sloc>> <invalid sloc> implicit 
h '__hlsl_resource_t
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(float)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 // CHECK: -HLSLResourceAttr 0x{{[0-9a-f]+}} <<invalid sloc>> Implicit 
TypedBuffer
 RWBuffer<float> Buffer1;
 
@@ -18,6 +17,5 @@ RWBuffer<float> Buffer1;
 // CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]
 // CHECK-SAME{LITERAL}: [[hlsl::is_rov]]
 // CHECK-SAME{LITERAL}: [[hlsl::contained_type(vector<float, 4>)]]
-// CHECK-SAME: ':'__hlsl_resource_t'
 // CHECK: -HLSLResourceAttr 0x{{[0-9a-f]+}} <<invalid sloc>> Implicit 
TypedBuffer
 RasterizerOrderedBuffer<vector<float, 4> > BufferArray3[4];


        
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