[clang] Implement resource binding type prefix mismatch errors (PR #97103)

via cfe-commits cfe-commits at lists.llvm.org
Fri Jun 28 12:43:04 PDT 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang

@llvm/pr-subscribers-hlsl

Author: Joshua Batista (bob80905)

<details>
<summary>Changes</summary>

There are currently no diagnostics being emitted for when a resource is bound to a register with an incorrect binding type prefix. For example, a CBuffer type resource should be bound with a a binding type prefix of 'b', but if instead the prefix is 'u', no errors will be emitted. This PR implements a set of diagnostics for when the prefix is not expected.
Fixes https://github.com/llvm/llvm-project/issues/57886
This is a continuation / refresh of this PR: https://github.com/llvm/llvm-project/pull/87578

---

Patch is 25.60 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/97103.diff


12 Files Affected:

- (modified) clang/include/clang/Basic/Attr.td (+1-1) 
- (modified) clang/include/clang/Basic/DiagnosticSemaKinds.td (+4-1) 
- (modified) clang/include/clang/Sema/SemaHLSL.h (+2) 
- (modified) clang/lib/Sema/HLSLExternalSemaSource.cpp (+14-12) 
- (modified) clang/lib/Sema/SemaHLSL.cpp (+228-4) 
- (modified) clang/test/AST/HLSL/ast-dump-comment-cbuffe-tbufferr.hlsl (+2) 
- (modified) clang/test/AST/HLSL/cbuffer_tbuffer.hlsl (+4-2) 
- (modified) clang/test/AST/HLSL/packoffset.hlsl (+1) 
- (modified) clang/test/AST/HLSL/pch_hlsl_buffer.hlsl (+2) 
- (modified) clang/test/AST/HLSL/resource_binding_attr.hlsl (+4-2) 
- (modified) clang/test/SemaHLSL/resource_binding_attr_error.hlsl (+10-11) 
- (added) clang/test/SemaHLSL/resource_binding_attr_error_mismatch.hlsl (+74) 


``````````diff
diff --git a/clang/include/clang/Basic/Attr.td b/clang/include/clang/Basic/Attr.td
index 452cd1810f653..c3d67e19656da 100644
--- a/clang/include/clang/Basic/Attr.td
+++ b/clang/include/clang/Basic/Attr.td
@@ -4467,7 +4467,7 @@ def HLSLSV_GroupIndex: HLSLAnnotationAttr {
 
 def HLSLResourceBinding: InheritableAttr {
   let Spellings = [HLSLAnnotation<"register">];
-  let Subjects = SubjectList<[HLSLBufferObj, ExternalGlobalVar]>;
+  let Subjects = SubjectList<[HLSLBufferObj, ExternalGlobalVar], ErrorDiag>;
   let LangOpts = [HLSL];
   let Args = [StringArgument<"Slot">, StringArgument<"Space", 1>];
   let Documentation = [HLSLResourceBindingDocs];
diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index 96f0c0f0205c2..3bf15ff5f2657 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -12303,7 +12303,10 @@ def err_hlsl_missing_semantic_annotation : Error<
 def err_hlsl_init_priority_unsupported : Error<
   "initializer priorities are not supported in HLSL">;
 
-def err_hlsl_unsupported_register_type : Error<"invalid resource class specifier '%0' used; expected 'b', 's', 't', or 'u'">;
+def err_hlsl_mismatching_register_resource_type_and_name: Error<"invalid register name prefix '%0' for register resource type '%1' (expected %select{'t'|'u'|'b'|'s'}2)">;
+def err_hlsl_mismatching_register_builtin_type_and_name: Error<"invalid register name prefix '%0' for '%1' (expected %2)">;
+def err_hlsl_unsupported_register_prefix : Error<"invalid resource class specifier '%0' used; expected 't', 'u', 'b', or 's'">;
+def err_hlsl_unsupported_register_resource_type : Error<"invalid resource '%0' used">;
 def err_hlsl_unsupported_register_number : Error<"register number should be an integer">;
 def err_hlsl_expected_space : Error<"invalid space specifier '%0' used; expected 'space' followed by an integer, like space1">;
 def warn_hlsl_packoffset_mix : Warning<"cannot mix packoffset elements with nonpackoffset elements in a cbuffer">,
diff --git a/clang/include/clang/Sema/SemaHLSL.h b/clang/include/clang/Sema/SemaHLSL.h
index 4d6958a1be3e5..d3d36d04d1019 100644
--- a/clang/include/clang/Sema/SemaHLSL.h
+++ b/clang/include/clang/Sema/SemaHLSL.h
@@ -22,6 +22,7 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Sema/Scope.h"
 #include "clang/Sema/SemaBase.h"
+#include "clang/Sema/Sema.h"
 #include <initializer_list>
 
 namespace clang {
@@ -31,6 +32,7 @@ class SemaHLSL : public SemaBase {
 public:
   SemaHLSL(Sema &S);
 
+  HLSLResourceAttr *mergeHLSLResourceAttr(bool CBuffer);
   Decl *ActOnStartBuffer(Scope *BufferScope, bool CBuffer, SourceLocation KwLoc,
                          IdentifierInfo *Ident, SourceLocation IdentLoc,
                          SourceLocation LBrace);
diff --git a/clang/lib/Sema/HLSLExternalSemaSource.cpp b/clang/lib/Sema/HLSLExternalSemaSource.cpp
index a2b29a7bdf505..b82cd8373403a 100644
--- a/clang/lib/Sema/HLSLExternalSemaSource.cpp
+++ b/clang/lib/Sema/HLSLExternalSemaSource.cpp
@@ -490,23 +490,24 @@ void HLSLExternalSemaSource::defineTrivialHLSLTypes() {
 }
 
 /// Set up common members and attributes for buffer types
-static BuiltinTypeDeclBuilder setupBufferType(CXXRecordDecl *Decl, Sema &S,
-                                              ResourceClass RC, ResourceKind RK,
-                                              bool IsROV) {
+static BuiltinTypeDeclBuilder setupBufferHandle(CXXRecordDecl *Decl, Sema &S,
+                                                ResourceClass RC) {
   return BuiltinTypeDeclBuilder(Decl)
       .addHandleMember()
-      .addDefaultHandleConstructor(S, RC)
-      .annotateResourceClass(RC, RK, IsROV);
+      .addDefaultHandleConstructor(S, RC);
 }
 
 void HLSLExternalSemaSource::defineHLSLTypesWithForwardDeclarations() {
   CXXRecordDecl *Decl;
-  Decl = BuiltinTypeDeclBuilder(*SemaPtr, HLSLNamespace, "RWBuffer")
-             .addSimpleTemplateParams(*SemaPtr, {"element_type"})
-             .Record;
+  Decl =
+      BuiltinTypeDeclBuilder(*SemaPtr, HLSLNamespace, "RWBuffer")
+          .addSimpleTemplateParams(*SemaPtr, {"element_type"})
+          .annotateResourceClass(ResourceClass::UAV, ResourceKind::TypedBuffer,
+                                 /*IsROV=*/false)
+          .Record;
+
   onCompletion(Decl, [this](CXXRecordDecl *Decl) {
-    setupBufferType(Decl, *SemaPtr, ResourceClass::UAV,
-                    ResourceKind::TypedBuffer, /*IsROV=*/false)
+    setupBufferHandle(Decl, *SemaPtr, ResourceClass::UAV)
         .addArraySubscriptOperators()
         .completeDefinition();
   });
@@ -514,10 +515,11 @@ void HLSLExternalSemaSource::defineHLSLTypesWithForwardDeclarations() {
   Decl =
       BuiltinTypeDeclBuilder(*SemaPtr, HLSLNamespace, "RasterizerOrderedBuffer")
           .addSimpleTemplateParams(*SemaPtr, {"element_type"})
+          .annotateResourceClass(ResourceClass::UAV, ResourceKind::TypedBuffer,
+                                 /*IsROV=*/true)
           .Record;
   onCompletion(Decl, [this](CXXRecordDecl *Decl) {
-    setupBufferType(Decl, *SemaPtr, ResourceClass::UAV,
-                    ResourceKind::TypedBuffer, /*IsROV=*/true)
+    setupBufferHandle(Decl, *SemaPtr, ResourceClass::UAV)
         .addArraySubscriptOperators()
         .completeDefinition();
   });
diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index eebe17a5b4bf7..d2b2f163231c9 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -29,6 +29,25 @@ using namespace clang;
 
 SemaHLSL::SemaHLSL(Sema &S) : SemaBase(S) {}
 
+HLSLResourceAttr *SemaHLSL::mergeHLSLResourceAttr(bool CBuffer) {
+  // cbuffer case
+  if (CBuffer) {
+    HLSLResourceAttr *attr = HLSLResourceAttr::CreateImplicit(
+        getASTContext(), llvm::hlsl::ResourceClass::CBuffer,
+        llvm::hlsl::ResourceKind::CBuffer,
+        /*IsROV=*/false);
+    return attr;
+  }
+  // tbuffer case
+  else {
+    HLSLResourceAttr *attr = HLSLResourceAttr::CreateImplicit(
+        getASTContext(), llvm::hlsl::ResourceClass::SRV,
+        llvm::hlsl::ResourceKind::TBuffer,
+        /*IsROV=*/false);
+    return attr;
+  }
+}
+
 Decl *SemaHLSL::ActOnStartBuffer(Scope *BufferScope, bool CBuffer,
                                  SourceLocation KwLoc, IdentifierInfo *Ident,
                                  SourceLocation IdentLoc,
@@ -38,6 +57,10 @@ Decl *SemaHLSL::ActOnStartBuffer(Scope *BufferScope, bool CBuffer,
   HLSLBufferDecl *Result = HLSLBufferDecl::Create(
       getASTContext(), LexicalParent, CBuffer, KwLoc, Ident, IdentLoc, LBrace);
 
+  HLSLResourceAttr *NewAttr = mergeHLSLResourceAttr(CBuffer);
+  if (NewAttr)
+    Result->addAttr(NewAttr);
+
   SemaRef.PushOnScopeChains(Result, BufferScope);
   SemaRef.PushDeclContext(BufferScope, Result);
 
@@ -437,7 +460,206 @@ void SemaHLSL::handleShaderAttr(Decl *D, const ParsedAttr &AL) {
     D->addAttr(NewAttr);
 }
 
+struct register_binding_flags {
+  bool resource = false;
+  bool udt = false;
+  bool other = false;
+  bool basic = false;
+
+  bool srv = false;
+  bool uav = false;
+  bool cbv = false;
+  bool sampler = false;
+
+  bool contains_numeric = false;
+  bool default_globals = false;
+};
+
+bool isDeclaredWithinCOrTBuffer(const Decl *decl) {
+  if (!decl)
+    return false;
+
+  // Traverse up the parent contexts
+  const DeclContext *context = decl->getDeclContext();
+  while (context) {
+    if (isa<HLSLBufferDecl>(context)) {
+      return true;
+    }
+    context = context->getParent();
+  }
+
+  return false;
+}
+
+const HLSLResourceAttr *
+getHLSLResourceAttrFromVarDecl(VarDecl *SamplerUAVOrSRV) {
+  const Type *Ty = SamplerUAVOrSRV->getType()->getPointeeOrArrayElementType();
+  if (!Ty)
+    llvm_unreachable("Resource class must have an element type.");
+
+  if (const BuiltinType *BTy = dyn_cast<BuiltinType>(Ty)) {
+    /* QualType QT = SamplerUAVOrSRV->getType();
+    PrintingPolicy PP = S.getPrintingPolicy();
+    std::string typestr = QualType::getAsString(QT.split(), PP);
+
+    S.Diag(ArgLoc, diag::err_hlsl_unsupported_register_resource_type)
+        << typestr;
+    return; */
+    return nullptr;
+  }
+
+  const CXXRecordDecl *TheRecordDecl = Ty->getAsCXXRecordDecl();
+  if (!TheRecordDecl)
+    llvm_unreachable("Resource class should have a resource type declaration.");
+
+  if (auto TDecl = dyn_cast<ClassTemplateSpecializationDecl>(TheRecordDecl))
+    TheRecordDecl = TDecl->getSpecializedTemplate()->getTemplatedDecl();
+  TheRecordDecl = TheRecordDecl->getCanonicalDecl();
+  const auto *Attr = TheRecordDecl->getAttr<HLSLResourceAttr>();
+  return Attr;
+}
+
+void traverseType(QualType T, register_binding_flags &r) {
+  if (T->isIntegralOrEnumerationType() || T->isFloatingType()) {
+    r.contains_numeric = true;
+    return;
+  } else if (const RecordType *RT = T->getAs<RecordType>()) {
+    RecordDecl *SubRD = RT->getDecl();
+    if (auto TDecl = dyn_cast<ClassTemplateSpecializationDecl>(SubRD)) {
+      auto TheRecordDecl = TDecl->getSpecializedTemplate()->getTemplatedDecl();
+      TheRecordDecl = TheRecordDecl->getCanonicalDecl();
+      const auto *Attr = TheRecordDecl->getAttr<HLSLResourceAttr>();
+      llvm::hlsl::ResourceClass DeclResourceClass = Attr->getResourceClass();
+      switch (DeclResourceClass) {
+      case llvm::hlsl::ResourceClass::SRV: {
+        r.srv = true;
+        break;
+      }
+      case llvm::hlsl::ResourceClass::UAV: {
+        r.uav = true;
+        break;
+      }
+      case llvm::hlsl::ResourceClass::CBuffer: {
+        r.cbv = true;
+        break;
+      }
+      case llvm::hlsl::ResourceClass::Sampler: {
+        r.sampler = true;
+        break;
+      }     
+      }
+    }
+
+    else if (SubRD->isCompleteDefinition()) {
+      for (auto Field : SubRD->fields()) {
+        QualType T = Field->getType();
+        traverseType(T, r);
+      }
+    }
+  }
+}
+
+void setResourceClassFlagsFromRecordDecl(register_binding_flags &r,
+                                         const RecordDecl *RD) {
+  if (!RD)
+    return;
+
+  if (RD->isCompleteDefinition()) {
+    for (auto Field : RD->fields()) {
+      QualType T = Field->getType();
+      traverseType(T, r);
+    }
+  }
+}
+
+register_binding_flags HLSLFillRegisterBindingFlags(Sema &S, Decl *D) {
+  register_binding_flags r;
+  if (!isDeclaredWithinCOrTBuffer(D)) {
+    // make sure the type is a basic / numeric type
+    if (VarDecl *v = dyn_cast<VarDecl>(D)) {
+      QualType t = v->getType();
+      // a numeric variable will inevitably end up in $Globals buffer
+      if (t->isIntegralType(S.getASTContext()) || t->isFloatingType())
+        r.default_globals = true;
+    }
+  }
+  // Cbuffers and Tbuffers are HLSLBufferDecl types
+  HLSLBufferDecl *CBufferOrTBuffer = dyn_cast<HLSLBufferDecl>(D);
+  // Samplers, UAVs, and SRVs are VarDecl types
+  VarDecl *SamplerUAVOrSRV = dyn_cast<VarDecl>(D);
+
+  if (CBufferOrTBuffer) {
+    r.resource = true;
+    if (CBufferOrTBuffer->isCBuffer())
+      r.cbv = true;
+    else
+      r.srv = true;
+  } else if (SamplerUAVOrSRV) {
+    const HLSLResourceAttr *res_attr =
+        getHLSLResourceAttrFromVarDecl(SamplerUAVOrSRV);
+    if (res_attr) {
+      llvm::hlsl::ResourceClass DeclResourceClass =
+          res_attr->getResourceClass();
+      r.resource = true;
+      switch (DeclResourceClass) {
+      case llvm::hlsl::ResourceClass::SRV: {
+        r.srv = true;
+        break;
+      }
+      case llvm::hlsl::ResourceClass::UAV: {
+        r.uav = true;
+        break;
+      }
+      case llvm::hlsl::ResourceClass::CBuffer: {
+        r.cbv = true;
+        break;
+      }
+      case llvm::hlsl::ResourceClass::Sampler: {
+        r.sampler = true;
+        break;
+      }      
+      }
+    } else {
+      if (SamplerUAVOrSRV->getType()->isBuiltinType())
+        r.basic = true;
+      else if (SamplerUAVOrSRV->getType()->isAggregateType()) {
+        r.udt = true;
+        QualType VarType = SamplerUAVOrSRV->getType();
+        if (const RecordType *RT = VarType->getAs<RecordType>()) {
+          const RecordDecl *RD = RT->getDecl();
+          // recurse through members, set appropriate resource class flags.
+          setResourceClassFlagsFromRecordDecl(r, RD);
+        }
+      } else
+        r.other = true;
+    }
+  } else {
+    llvm_unreachable("unknown decl type");
+  }
+  return r;
+}
+
+static void DiagnoseHLSLResourceRegType(Sema &S, SourceLocation &ArgLoc,
+                                        Decl *D, StringRef &Slot) {
+
+  register_binding_flags f = HLSLFillRegisterBindingFlags(S, D);
+  // Samplers, UAVs, and SRVs are VarDecl types
+  VarDecl *SamplerUAVOrSRV = dyn_cast<VarDecl>(D);
+  // Cbuffers and Tbuffers are HLSLBufferDecl types
+  HLSLBufferDecl *CBufferOrTBuffer = dyn_cast<HLSLBufferDecl>(D);
+  if (!SamplerUAVOrSRV && !CBufferOrTBuffer)
+    return;
+
+  // TODO: emit diagnostic code based on the flags set in f.
+}
+
+
 void SemaHLSL::handleResourceBindingAttr(Decl *D, const ParsedAttr &AL) {
+  if (dyn_cast<VarDecl>(D)) {  
+    if (SemaRef.RequireCompleteType(D->getBeginLoc(), cast<ValueDecl>(D)->getType(),
+                              diag::err_incomplete_type))
+      return;
+  }
   StringRef Space = "space0";
   StringRef Slot = "";
 
@@ -470,13 +692,15 @@ void SemaHLSL::handleResourceBindingAttr(Decl *D, const ParsedAttr &AL) {
   // Validate.
   if (!Slot.empty()) {
     switch (Slot[0]) {
+    case 't':
     case 'u':
     case 'b':
     case 's':
-    case 't':
+    case 'c':
+    case 'i':
       break;
     default:
-      Diag(ArgLoc, diag::err_hlsl_unsupported_register_type)
+      Diag(ArgLoc, diag::err_hlsl_unsupported_register_prefix)
           << Slot.substr(0, 1);
       return;
     }
@@ -500,8 +724,8 @@ void SemaHLSL::handleResourceBindingAttr(Decl *D, const ParsedAttr &AL) {
     return;
   }
 
-  // FIXME: check reg type match decl. Issue
-  // https://github.com/llvm/llvm-project/issues/57886.
+  DiagnoseHLSLResourceRegType(SemaRef, ArgLoc, D, Slot);
+
   HLSLResourceBindingAttr *NewAttr =
       HLSLResourceBindingAttr::Create(getASTContext(), Slot, Space, AL);
   if (NewAttr)
diff --git a/clang/test/AST/HLSL/ast-dump-comment-cbuffe-tbufferr.hlsl b/clang/test/AST/HLSL/ast-dump-comment-cbuffe-tbufferr.hlsl
index a98dc0f4ce431..727d505471bcb 100644
--- a/clang/test/AST/HLSL/ast-dump-comment-cbuffe-tbufferr.hlsl
+++ b/clang/test/AST/HLSL/ast-dump-comment-cbuffe-tbufferr.hlsl
@@ -38,12 +38,14 @@ tbuffer B {
 }
 
 // AST:HLSLBufferDecl {{.*}}:11:1, line:20:1> line:11:9 cbuffer A
+// AST-NEXT:-HLSLResourceAttr {{.*}} <<invalid sloc>> Implicit CBuffer CBuffer
 // AST-NEXT:FullComment {{.*}}<line:10:4, col:17>
 // AST-NEXT:`-ParagraphComment {{.*}}<col:4, col:17>
 // AST-NEXT:`-TextComment {{.*}}<col:4, col:17> Text=" CBuffer decl."
 // AST-NEXT:-VarDecl {{.*}}<line:15:5, col:11> col:11 a 'float'
 // AST-NEXT:`-VarDecl {{.*}}<line:19:5, col:9> col:9 b 'int'
 // AST-NEXT:HLSLBufferDecl {{.*}}<line:29:1, line:38:1> line:29:9 tbuffer B
+// AST-NEXT:-HLSLResourceAttr {{.*}} <<invalid sloc>> Implicit SRV TBuffer
 // AST-NEXT:-FullComment {{.*}}<line:28:4, col:17>
 // AST-NEXT: `-ParagraphComment {{.*}}<col:4, col:17>
 // AST-NEXT:  `-TextComment {{.*}}<col:4, col:17> Text=" TBuffer decl."
diff --git a/clang/test/AST/HLSL/cbuffer_tbuffer.hlsl b/clang/test/AST/HLSL/cbuffer_tbuffer.hlsl
index 7204dcd16e0a9..a67688d510ea6 100644
--- a/clang/test/AST/HLSL/cbuffer_tbuffer.hlsl
+++ b/clang/test/AST/HLSL/cbuffer_tbuffer.hlsl
@@ -1,12 +1,14 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -ast-dump -o - %s | FileCheck %s
 
-// CHECK:HLSLBufferDecl 0x[[CB:[0-9a-f]+]] {{.*}} line:5:9 cbuffer CB
+// CHECK:HLSLBufferDecl 0x[[CB:[0-9a-f]+]] {{.*}} line:6:9 cbuffer CB
+// CHECK-NEXT:HLSLResourceAttr {{.*}} <<invalid sloc>> Implicit CBuffer CBuffer
 // CHECK-NEXT:VarDecl 0x[[A:[0-9a-f]+]] {{.*}} col:9 used a 'float'
 cbuffer CB {
   float a;
 }
 
-// CHECK:HLSLBufferDecl 0x[[TB:[0-9a-f]+]] {{.*}} line:11:9 tbuffer TB
+// CHECK:HLSLBufferDecl 0x[[TB:[0-9a-f]+]] {{.*}} line:13:9 tbuffer TB
+// CHECK-NEXT:HLSLResourceAttr {{.*}} <<invalid sloc>> Implicit SRV TBuffer
 // CHECK-NEXT:VarDecl 0x[[B:[0-9a-f]+]] {{.*}} col:9 used b 'float'
 tbuffer TB {
   float b;
diff --git a/clang/test/AST/HLSL/packoffset.hlsl b/clang/test/AST/HLSL/packoffset.hlsl
index 060288c2f7f76..1dc99620c55c4 100644
--- a/clang/test/AST/HLSL/packoffset.hlsl
+++ b/clang/test/AST/HLSL/packoffset.hlsl
@@ -4,6 +4,7 @@
 // CHECK: HLSLBufferDecl {{.*}} cbuffer A
 cbuffer A
 {
+    // CHECK-NEXT:-HLSLResourceAttr {{.*}} <<invalid sloc>> line:5:9 cbuffer A
     // CHECK-NEXT: VarDecl {{.*}} A1 'float4'
     // CHECK-NEXT: HLSLPackOffsetAttr {{.*}} 0 0
     float4 A1 : packoffset(c);
diff --git a/clang/test/AST/HLSL/pch_hlsl_buffer.hlsl b/clang/test/AST/HLSL/pch_hlsl_buffer.hlsl
index e9a6ea1a16312..e264241e62e92 100644
--- a/clang/test/AST/HLSL/pch_hlsl_buffer.hlsl
+++ b/clang/test/AST/HLSL/pch_hlsl_buffer.hlsl
@@ -17,8 +17,10 @@ float foo() {
 }
 // Make sure cbuffer/tbuffer works for PCH.
 // CHECK:HLSLBufferDecl 0x{{[0-9a-f]+}} <{{.*}}:7:1, line:9:1> line:7:9 imported <undeserialized declarations> cbuffer A
+// CHECK-NEXT:HLSLResourceAttr {{.*}} <<invalid sloc>> Implicit CBuffer CBuffer
 // CHECK-NEXT:`-VarDecl 0x[[A:[0-9a-f]+]] <line:8:3, col:9> col:9 imported used a 'float'
 // CHECK-NEXT:HLSLBufferDecl 0x{{[0-9a-f]+}} <line:11:1, line:13:1> line:11:9 imported <undeserialized declarations> tbuffer B
+// CHECK-NEXT:HLSLResourceAttr {{.*}} <<invalid sloc>> Implicit SRV TBuffer
 // CHECK-NEXT:`-VarDecl 0x[[B:[0-9a-f]+]] <line:12:3, col:9> col:9 imported used b 'float'
 // CHECK-NEXT:FunctionDecl 0x{{[0-9a-f]+}} <line:15:1, line:17:1> line:15:7 imported foo 'float ()'
 // CHECK-NEXT:CompoundStmt 0x{{[0-9a-f]+}} <col:13, line:17:1>
diff --git a/clang/test/AST/HLSL/resource_binding_attr.hlsl b/clang/test/AST/HLSL/resource_binding_attr.hlsl
index 71900f2dbda55..9752494f5adc9 100644
--- a/clang/test/AST/HLSL/resource_binding_attr.hlsl
+++ b/clang/test/AST/HLSL/resource_binding_attr.hlsl
@@ -1,13 +1,15 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -ast-dump -o - %s | FileCheck %s
 
-// CHECK:HLSLBufferDecl 0x[[CB:[0-9a-f]+]] {{.*}} line:6:9 cbuffer CB
+// CHECK:HLSLBufferDecl 0x[[CB:[0-9a-f]+]] {{.*}} line:7:9 cbuffer CB
+// CHECK-NEXT:HLSLResourceAttr 0x[[CB:[0-9a-f]+]] {{.*}} Implicit CBuffer CBuffer
 // CHECK-NEXT:HLSLResourceBindingAttr 0x{{[0-9a-f]+}} <col:14> "b3" "space2"
 // CHECK-NEXT:VarDecl 0x[[A:[0-9a-f]+]] {{.*}} col:9 used a 'float'
 cbuffer CB : register(b3, space2) {
   float a;
 }
 
-// CHECK:HLSLBufferDecl 0x[[TB:[0-9a-f]+]] {{.*}} line:13:9 tbuffer TB
+// CHECK:HLSLBufferDecl 0x[[TB:[0-9a-f]+]] {{.*}} line:15:9 tbuffer TB
+// CHECK-NEXT:HLSLResourceAttr 0x[[CB:[0-9a-f]+]] {{.*}} Implicit SRV TBuffer
 // CHECK-NEXT:HLSLResourceBindingAttr 0x{{[0-9a-f]+}} <col:14> "t2" "space1"
 // CHECK-NEXT:VarDecl 0x[[B:[0-9a-f]+]] {{.*}} col:9 used b 'float'
 tbuffer TB : register(t2, space1) {
diff --git a/clang/test/SemaHLSL/resource_binding_attr_error.hlsl b/clang/test/SemaHLSL/resource_binding_attr_error.hlsl
index 2f8aa098db701..58a1f3f1f64d7 100644
--- a/clang/test/SemaHLSL/resource_binding_attr_error.hlsl
+++ b/clang/test/SemaHLSL/resource_binding_attr_error.hlsl
@@ -1,9 +1,9 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -o - -fsyntax-only %s -verify
 
-// expected-error at +1 {{invalid resource class specifier 'c' used; expected 'b', 's', 't', or 'u'}}
+// FIXME: emit a diagnostic because float doesn't match the 'c' register type
 float a : register(c0, space1);
 
-// expected-error at +1 {{invalid resource class specifier 'i' used; expected 'b', 's', 't', or 'u'}}
+// FIXME: emit a diagnostic because cbuffer doesn't match the 'i' register type
 cbuffer b : register(i0) {
 
 }
@@ -33,28 +33,27 @@ cbuffer C : register(b 2) {}
 // expected-error at +1 {{wrong argument format for hlsl attribute, use space3 instead}}
 cbuffer D : register(b 2, space 3) {}
 
-// expected-warning at +1 {{'register' attribute only applies to cbuffer/tbuffer and external global variables}}
+// expected-error at +1 {{'register' attribute only applies to cbuffer/tbuffer and external global variables}}
 static RWBuffer<float> U : register(u5);
 
 void foo() {
-  // expected-warning at +1 {{'register' attribute only applies to cbuffer/tbuffer and external global vari...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/97103


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