[clang] [clang][frontend] Support applying the annotate attribute to statements (PR #111841)

Eric Astor via cfe-commits cfe-commits at lists.llvm.org
Thu Oct 10 09:05:12 PDT 2024


https://github.com/ericastor updated https://github.com/llvm/llvm-project/pull/111841

>From 6ca0de7e07a02a91ed9ea1493e48c2d29806c537 Mon Sep 17 00:00:00 2001
From: Eric Astor <epastor at google.com>
Date: Wed, 9 Oct 2024 22:12:50 +0000
Subject: [PATCH 1/4] [clang][frontend] Support applying annotate to statements

The underlying code already works; this is just a matter of allowing application of this undocumented attribute.
---
 clang/include/clang/Basic/Attr.td         |  7 ++++++-
 clang/utils/TableGen/ClangAttrEmitter.cpp | 11 +++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/clang/include/clang/Basic/Attr.td b/clang/include/clang/Basic/Attr.td
index fbcbf0ed416416..ec3d6e0079f630 100644
--- a/clang/include/clang/Basic/Attr.td
+++ b/clang/include/clang/Basic/Attr.td
@@ -759,6 +759,11 @@ class TargetSpecificAttr<TargetSpec target> {
 /// redeclarations, even when it's written on a parameter.
 class InheritableParamAttr : InheritableAttr;
 
+/// A attribute that is either a declaration attribute or a statement attribute,
+/// and if used as a declaration attribute, is inherited by later
+/// redeclarations, even when it's written on a parameter.
+class InheritableParamOrStmtAttr : InheritableParamAttr;
+
 /// An attribute which changes the ABI rules for a specific parameter.
 class ParameterABIAttr : InheritableParamAttr {
   let Subjects = SubjectList<[ParmVar]>;
@@ -928,7 +933,7 @@ def AnalyzerNoReturn : InheritableAttr {
   let Documentation = [Undocumented];
 }
 
-def Annotate : InheritableParamAttr {
+def Annotate : InheritableParamOrStmtAttr {
   let Spellings = [Clang<"annotate">];
   let Args = [StringArgument<"Annotation">, VariadicExprArgument<"Args">];
   // Ensure that the annotate attribute can be used with
diff --git a/clang/utils/TableGen/ClangAttrEmitter.cpp b/clang/utils/TableGen/ClangAttrEmitter.cpp
index 87be48c215e230..cee47fa8a283f2 100644
--- a/clang/utils/TableGen/ClangAttrEmitter.cpp
+++ b/clang/utils/TableGen/ClangAttrEmitter.cpp
@@ -3295,6 +3295,7 @@ static const AttrClassDescriptor AttrClassDescriptors[] = {
   { "INHERITABLE_ATTR", "InheritableAttr" },
   { "DECL_OR_TYPE_ATTR", "DeclOrTypeAttr" },
   { "INHERITABLE_PARAM_ATTR", "InheritableParamAttr" },
+  { "INHERITABLE_PARAM_OR_STMT_ATTR", "InheritableParamOrStmtAttr" },
   { "PARAMETER_ABI_ATTR", "ParameterABIAttr" },
   { "HLSL_ANNOTATION_ATTR", "HLSLAnnotationAttr"}
 };
@@ -4328,10 +4329,12 @@ static void GenerateMutualExclusionsChecks(const Record &Attr,
 
   // This means the attribute is either a statement attribute, a decl
   // attribute, or both; find out which.
-  bool CurAttrIsStmtAttr =
-      Attr.isSubClassOf("StmtAttr") || Attr.isSubClassOf("DeclOrStmtAttr");
-  bool CurAttrIsDeclAttr =
-      !CurAttrIsStmtAttr || Attr.isSubClassOf("DeclOrStmtAttr");
+  bool CurAttrIsStmtAttr = Attr.isSubClassOf("StmtAttr") ||
+                           Attr.isSubClassOf("DeclOrStmtAttr") ||
+                           Attr.isSubClassOf("InheritableParamOrStmtAttr");
+  bool CurAttrIsDeclAttr = !CurAttrIsStmtAttr ||
+                           Attr.isSubClassOf("DeclOrStmtAttr") ||
+                           Attr.isSubClassOf("InheritableParamOrStmtAttr");
 
   std::vector<std::string> DeclAttrs, StmtAttrs;
 

>From 88e7bf70c327b85bcbd595503a593de80676d1b4 Mon Sep 17 00:00:00 2001
From: Eric Astor <epastor at google.com>
Date: Thu, 10 Oct 2024 14:10:52 +0000
Subject: [PATCH 2/4] Add additional support for stmt-level AnnotateAttr

---
 clang/include/clang/AST/Attr.h             | 17 ++++++++++
 clang/lib/Sema/SemaStmtAttr.cpp            | 20 ++++++++++++
 clang/lib/Sema/SemaTemplateInstantiate.cpp | 14 ++++++++
 clang/test/AST/attr-print-emit.cpp         |  3 ++
 clang/test/Sema/annotate.c                 |  3 ++
 clang/test/SemaTemplate/attributes.cpp     | 38 ++++++++++++++++++++++
 6 files changed, 95 insertions(+)

diff --git a/clang/include/clang/AST/Attr.h b/clang/include/clang/AST/Attr.h
index ac44e9fdd7c4e9..725498e132fc28 100644
--- a/clang/include/clang/AST/Attr.h
+++ b/clang/include/clang/AST/Attr.h
@@ -197,6 +197,23 @@ class InheritableParamAttr : public InheritableAttr {
   }
 };
 
+class InheritableParamOrStmtAttr : public InheritableParamAttr {
+protected:
+  InheritableParamOrStmtAttr(ASTContext &Context,
+                             const AttributeCommonInfo &CommonInfo,
+                             attr::Kind AK, bool IsLateParsed,
+                             bool InheritEvenIfAlreadyPresent)
+      : InheritableParamAttr(Context, CommonInfo, AK, IsLateParsed,
+                             InheritEvenIfAlreadyPresent) {}
+
+public:
+  // Implement isa/cast/dyncast/etc.
+  static bool classof(const Attr *A) {
+    return A->getKind() >= attr::FirstInheritableParamOrStmtAttr &&
+           A->getKind() <= attr::LastInheritableParamOrStmtAttr;
+  }
+};
+
 class HLSLAnnotationAttr : public InheritableAttr {
 protected:
   HLSLAnnotationAttr(ASTContext &Context, const AttributeCommonInfo &CommonInfo,
diff --git a/clang/lib/Sema/SemaStmtAttr.cpp b/clang/lib/Sema/SemaStmtAttr.cpp
index b9b3b4063bc383..ee6630bdb429c6 100644
--- a/clang/lib/Sema/SemaStmtAttr.cpp
+++ b/clang/lib/Sema/SemaStmtAttr.cpp
@@ -242,6 +242,24 @@ static Attr *handleNoConvergentAttr(Sema &S, Stmt *St, const ParsedAttr &A,
   return ::new (S.Context) NoConvergentAttr(S.Context, A);
 }
 
+static Attr *handleAnnotateAttr(Sema &S, Stmt *St, const ParsedAttr &A,
+                                SourceRange Range) {
+  // Make sure that there is a string literal as the annotation's first
+  // argument.
+  StringRef Str;
+  if (!S.checkStringLiteralArgumentAttr(A, 0, Str))
+    return nullptr;
+
+  llvm::SmallVector<Expr *, 4> Args;
+  Args.reserve(A.getNumArgs() - 1);
+  for (unsigned Idx = 1; Idx < A.getNumArgs(); Idx++) {
+    assert(!A.isArgIdent(Idx));
+    Args.push_back(A.getArgAsExpr(Idx));
+  }
+
+  return AnnotateAttr::Create(S.Context, Str, Args.data(), Args.size(), A);
+}
+
 template <typename OtherAttr, int DiagIdx>
 static bool CheckStmtInlineAttr(Sema &SemaRef, const Stmt *OrigSt,
                                 const Stmt *CurSt,
@@ -679,6 +697,8 @@ static Attr *ProcessStmtAttribute(Sema &S, Stmt *St, const ParsedAttr &A,
     return handleMSConstexprAttr(S, St, A, Range);
   case ParsedAttr::AT_NoConvergent:
     return handleNoConvergentAttr(S, St, A, Range);
+  case ParsedAttr::AT_Annotate:
+    return handleAnnotateAttr(S, St, A, Range);
   default:
     // N.B., ClangAttrEmitter.cpp emits a diagnostic helper that ensures a
     // declaration attribute is not written on a statement, but this code is
diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp
index fd51fa4afcacbf..00a5f81dbca8fe 100644
--- a/clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -1537,6 +1537,7 @@ namespace {
                           NamedDecl *FirstQualifierInScope = nullptr,
                           bool AllowInjectedClassName = false);
 
+    const AnnotateAttr *TransformAnnotateAttr(const AnnotateAttr *AA);
     const CXXAssumeAttr *TransformCXXAssumeAttr(const CXXAssumeAttr *AA);
     const LoopHintAttr *TransformLoopHintAttr(const LoopHintAttr *LH);
     const NoInlineAttr *TransformStmtNoInlineAttr(const Stmt *OrigS,
@@ -2125,6 +2126,19 @@ TemplateInstantiator::TransformTemplateParmRefExpr(DeclRefExpr *E,
                                          Arg, PackIndex);
 }
 
+const AnnotateAttr *
+TemplateInstantiator::TransformAnnotateAttr(const AnnotateAttr *AA) {
+  SmallVector<Expr *> Args;
+  for (Expr *Arg : AA->args()) {
+    ExprResult Res = getDerived().TransformExpr(Arg);
+    if (!Res.isUsable())
+      return AA;
+    Args.push_back(Res.get());
+  }
+  return AnnotateAttr::CreateImplicit(getSema().Context, AA->getAnnotation(),
+                                      Args.data(), Args.size(), AA->getRange());
+}
+
 const CXXAssumeAttr *
 TemplateInstantiator::TransformCXXAssumeAttr(const CXXAssumeAttr *AA) {
   ExprResult Res = getDerived().TransformExpr(AA->getAssumption());
diff --git a/clang/test/AST/attr-print-emit.cpp b/clang/test/AST/attr-print-emit.cpp
index d8e62ed5f6cd11..a9bca6778d0f1a 100644
--- a/clang/test/AST/attr-print-emit.cpp
+++ b/clang/test/AST/attr-print-emit.cpp
@@ -78,6 +78,9 @@ class C {
 ANNOTATE_ATTR int annotated_attr ANNOTATE_ATTR = 0;
 // CHECK: __attribute__((annotate("Annotated"))) int annotated_attr __attribute__((annotate("Annotated"))) = 0;
 
+void increment() { [[clang::annotate("Annotated")]] annotated_attr++; }
+// CHECK: {{\[\[}}clang::annotate("Annotated")]] annotated_attr++;
+
 // FIXME: We do not print the attribute as written after the type specifier.
 int ANNOTATE_ATTR annotated_attr_fixme = 0;
 // CHECK: __attribute__((annotate("Annotated"))) int annotated_attr_fixme = 0;
diff --git a/clang/test/Sema/annotate.c b/clang/test/Sema/annotate.c
index b4551a102e6174..f2ef08d6378975 100644
--- a/clang/test/Sema/annotate.c
+++ b/clang/test/Sema/annotate.c
@@ -3,10 +3,12 @@
 void __attribute__((annotate("foo"))) foo(float *a) {
   __attribute__((annotate("bar"))) int x;
   [[clang::annotate("bar")]] int x2;
+  [[clang::annotate("bar")]] x2 += 1;
   __attribute__((annotate(1))) int y; // expected-error {{expected string literal as argument of 'annotate' attribute}}
   [[clang::annotate(1)]] int y2; // expected-error {{expected string literal as argument of 'annotate' attribute}}
   __attribute__((annotate("bar", 1))) int z;
   [[clang::annotate("bar", 1)]] int z2;
+  [[clang::annotate("bar", 1)]] z2 += 1;
 
   int u = __builtin_annotation(z, (char*) 0); // expected-error {{second argument to __builtin_annotation must be a non-wide string constant}}
   int v = __builtin_annotation(z, (char*) L"bar"); // expected-error {{second argument to __builtin_annotation must be a non-wide string constant}}
@@ -15,4 +17,5 @@ void __attribute__((annotate("foo"))) foo(float *a) {
 
   __attribute__((annotate())) int c; // expected-error {{'annotate' attribute takes at least 1 argument}}
   [[clang::annotate()]] int c2;      // expected-error {{'annotate' attribute takes at least 1 argument}}
+  [[clang::annotate()]] c2 += 1;     // expected-error {{'annotate' attribute takes at least 1 argument}}
 }
diff --git a/clang/test/SemaTemplate/attributes.cpp b/clang/test/SemaTemplate/attributes.cpp
index f6c9f13f0842d2..dea19d09745ca2 100644
--- a/clang/test/SemaTemplate/attributes.cpp
+++ b/clang/test/SemaTemplate/attributes.cpp
@@ -65,6 +65,17 @@ namespace attribute_annotate {
 template<typename T> [[clang::annotate("ANNOTATE_FOO"), clang::annotate("ANNOTATE_BAR")]] void HasAnnotations();
 void UseAnnotations() { HasAnnotations<int>(); }
 
+// CHECK: FunctionTemplateDecl {{.*}} HasStmtAnnotations
+// CHECK:   AnnotateAttr {{.*}} "ANNOTATE_BAZ"
+// CHECK: FunctionDecl {{.*}} HasStmtAnnotations
+// CHECK:   TemplateArgument type 'int'
+// CHECK:   AnnotateAttr {{.*}} "ANNOTATE_BAZ"
+template<typename T> void HasStmtAnnotations() {
+  int x = 0;
+  [[clang::annotate("ANNOTATE_BAZ")]] x++;
+}
+void UseStmtAnnotations() { HasStmtAnnotations<int>(); }
+
 // CHECK:      FunctionTemplateDecl {{.*}} HasPackAnnotations
 // CHECK-NEXT:   NonTypeTemplateParmDecl {{.*}} referenced 'int' depth 0 index 0 ... Is
 // CHECK-NEXT:   FunctionDecl {{.*}} HasPackAnnotations 'void ()'
@@ -95,6 +106,33 @@ void UseAnnotations() { HasAnnotations<int>(); }
 template <int... Is> [[clang::annotate("ANNOTATE_BAZ", Is...)]] void HasPackAnnotations();
 void UsePackAnnotations() { HasPackAnnotations<1, 2, 3>(); }
 
+// CHECK:      FunctionTemplateDecl {{.*}} HasStmtPackAnnotations
+// CHECK-NEXT:   NonTypeTemplateParmDecl {{.*}} referenced 'int' depth 0 index 0 ... Is
+// CHECK-NEXT:   FunctionDecl {{.*}} HasStmtPackAnnotations 'void ()'
+// CHECK:          AttributedStmt {{.*}}
+// CHECK-NEXT:       AnnotateAttr {{.*}} "ANNOTATE_QUUX"
+// CHECK-NEXT:         PackExpansionExpr {{.*}} '<dependent type>'
+// CHECK-NEXT:           DeclRefExpr {{.*}} 'int' NonTypeTemplateParm {{.*}} 'Is' 'int'
+// CHECK:        FunctionDecl {{.*}} used HasStmtPackAnnotations 'void ()'
+// CHECK-NEXT:     TemplateArgument{{.*}} pack
+// CHECK-NEXT:       TemplateArgument{{.*}} integral '1'
+// CHECK-NEXT:       TemplateArgument{{.*}} integral '2'
+// CHECK-NEXT:       TemplateArgument{{.*}} integral '3'
+// CHECK:          AttributedStmt {{.*}}
+// CHECK-NEXT:       AnnotateAttr {{.*}} "ANNOTATE_QUUX"
+// CHECK-NEXT:         PackExpansionExpr {{.*}}
+// CHECK-NEXT:         SubstNonTypeTemplateParmPackExpr {{.*}}
+// CHECK-NEXT:         NonTypeTemplateParmDecl {{.*}} referenced 'int' depth 0 index 0 ... Is
+// CHECK-NEXT:           TemplateArgument pack '<1, 2, 3>'
+// CHECK-NEXT:             TemplateArgument integral '1'
+// CHECK-NEXT:             TemplateArgument integral '2'
+// CHECK-NEXT:             TemplateArgument integral '3'
+template <int... Is> void HasStmtPackAnnotations() {
+  int x = 0;
+  [[clang::annotate("ANNOTATE_QUUX", Is...)]] x++;
+}
+void UseStmtPackAnnotations() { HasStmtPackAnnotations<1, 2, 3>(); }
+
 template <int... Is> [[clang::annotate(Is...)]] void HasOnlyPackAnnotation() {} // expected-error {{expected string literal as argument of 'annotate' attribute}}
 
 void UseOnlyPackAnnotations() {

>From 3864b0e007b1647f3b274d1e42c1767466f96b44 Mon Sep 17 00:00:00 2001
From: Eric Astor <epastor at google.com>
Date: Thu, 10 Oct 2024 14:23:22 +0000
Subject: [PATCH 3/4] Fix formatting

---
 clang/utils/TableGen/ClangAttrEmitter.cpp | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/clang/utils/TableGen/ClangAttrEmitter.cpp b/clang/utils/TableGen/ClangAttrEmitter.cpp
index cee47fa8a283f2..cdd17fb48bcdef 100644
--- a/clang/utils/TableGen/ClangAttrEmitter.cpp
+++ b/clang/utils/TableGen/ClangAttrEmitter.cpp
@@ -3288,17 +3288,16 @@ namespace {
 } // end anonymous namespace
 
 static const AttrClassDescriptor AttrClassDescriptors[] = {
-  { "ATTR", "Attr" },
-  { "TYPE_ATTR", "TypeAttr" },
-  { "STMT_ATTR", "StmtAttr" },
-  { "DECL_OR_STMT_ATTR", "DeclOrStmtAttr" },
-  { "INHERITABLE_ATTR", "InheritableAttr" },
-  { "DECL_OR_TYPE_ATTR", "DeclOrTypeAttr" },
-  { "INHERITABLE_PARAM_ATTR", "InheritableParamAttr" },
-  { "INHERITABLE_PARAM_OR_STMT_ATTR", "InheritableParamOrStmtAttr" },
-  { "PARAMETER_ABI_ATTR", "ParameterABIAttr" },
-  { "HLSL_ANNOTATION_ATTR", "HLSLAnnotationAttr"}
-};
+    {"ATTR", "Attr"},
+    {"TYPE_ATTR", "TypeAttr"},
+    {"STMT_ATTR", "StmtAttr"},
+    {"DECL_OR_STMT_ATTR", "DeclOrStmtAttr"},
+    {"INHERITABLE_ATTR", "InheritableAttr"},
+    {"DECL_OR_TYPE_ATTR", "DeclOrTypeAttr"},
+    {"INHERITABLE_PARAM_ATTR", "InheritableParamAttr"},
+    {"INHERITABLE_PARAM_OR_STMT_ATTR", "InheritableParamOrStmtAttr"},
+    {"PARAMETER_ABI_ATTR", "ParameterABIAttr"},
+    {"HLSL_ANNOTATION_ATTR", "HLSLAnnotationAttr"}};
 
 static void emitDefaultDefine(raw_ostream &OS, StringRef name,
                               const char *superName) {

>From be28c2b9f04d7a996f9766bb7cd384cafb775596 Mon Sep 17 00:00:00 2001
From: Eric Astor <epastor at google.com>
Date: Thu, 10 Oct 2024 16:04:01 +0000
Subject: [PATCH 4/4] Factor out the common logic for handling AnnotateAttr in
 Sema, and adjust error handling

---
 clang/include/clang/Sema/Sema.h               |  7 +++--
 clang/lib/Sema/Sema.cpp                       | 28 +++++++++++++++++++
 clang/lib/Sema/SemaDeclAttr.cpp               | 25 ++---------------
 clang/lib/Sema/SemaStmtAttr.cpp               |  2 +-
 clang/lib/Sema/SemaTemplateInstantiate.cpp    |  5 ++--
 .../lib/Sema/SemaTemplateInstantiateDecl.cpp  |  5 +++-
 clang/utils/TableGen/ClangAttrEmitter.cpp     | 21 +++++++-------
 7 files changed, 53 insertions(+), 40 deletions(-)

diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index ef010fafb1573e..f8118ca64ad3f2 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -4528,9 +4528,10 @@ class Sema final : public SemaBase {
   /// declaration.
   void AddAlignValueAttr(Decl *D, const AttributeCommonInfo &CI, Expr *E);
 
-  /// AddAnnotationAttr - Adds an annotation Annot with Args arguments to D.
-  void AddAnnotationAttr(Decl *D, const AttributeCommonInfo &CI,
-                         StringRef Annot, MutableArrayRef<Expr *> Args);
+  /// CreateAnnotationAttr - Creates an annotation Annot with Args arguments.
+  Attr *CreateAnnotationAttr(const AttributeCommonInfo &CI, StringRef Annot,
+                             MutableArrayRef<Expr *> Args);
+  Attr *CreateAnnotationAttr(const ParsedAttr &AL);
 
   bool checkMSInheritanceAttrOnDefinition(CXXRecordDecl *RD, SourceRange Range,
                                           bool BestCase,
diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index f05760428458b1..9f91ee9a39f2f9 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -2777,3 +2777,31 @@ bool Sema::isDeclaratorFunctionLike(Declarator &D) {
   });
   return Result;
 }
+
+Attr *Sema::CreateAnnotationAttr(const AttributeCommonInfo &CI, StringRef Annot,
+                                 MutableArrayRef<Expr *> Args) {
+
+  auto *A = AnnotateAttr::Create(Context, Annot, Args.data(), Args.size(), CI);
+  if (!ConstantFoldAttrArgs(
+          CI, MutableArrayRef<Expr *>(A->args_begin(), A->args_end()))) {
+    return nullptr;
+  }
+  return A;
+}
+
+Attr *Sema::CreateAnnotationAttr(const ParsedAttr &AL) {
+  // Make sure that there is a string literal as the annotation's first
+  // argument.
+  StringRef Str;
+  if (!checkStringLiteralArgumentAttr(AL, 0, Str))
+    return nullptr;
+
+  llvm::SmallVector<Expr *, 4> Args;
+  Args.reserve(AL.getNumArgs() - 1);
+  for (unsigned Idx = 1; Idx < AL.getNumArgs(); Idx++) {
+    assert(!AL.isArgIdent(Idx));
+    Args.push_back(AL.getArgAsExpr(Idx));
+  }
+
+  return CreateAnnotationAttr(AL, Str, Args);
+}
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index e2174ba926f17f..6759aae37afac1 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -3958,30 +3958,11 @@ static void handleTransparentUnionAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
   RD->addAttr(::new (S.Context) TransparentUnionAttr(S.Context, AL));
 }
 
-void Sema::AddAnnotationAttr(Decl *D, const AttributeCommonInfo &CI,
-                             StringRef Str, MutableArrayRef<Expr *> Args) {
-  auto *Attr = AnnotateAttr::Create(Context, Str, Args.data(), Args.size(), CI);
-  if (ConstantFoldAttrArgs(
-          CI, MutableArrayRef<Expr *>(Attr->args_begin(), Attr->args_end()))) {
-    D->addAttr(Attr);
-  }
-}
-
 static void handleAnnotateAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
-  // Make sure that there is a string literal as the annotation's first
-  // argument.
-  StringRef Str;
-  if (!S.checkStringLiteralArgumentAttr(AL, 0, Str))
-    return;
-
-  llvm::SmallVector<Expr *, 4> Args;
-  Args.reserve(AL.getNumArgs() - 1);
-  for (unsigned Idx = 1; Idx < AL.getNumArgs(); Idx++) {
-    assert(!AL.isArgIdent(Idx));
-    Args.push_back(AL.getArgAsExpr(Idx));
+  auto *Attr = S.CreateAnnotationAttr(AL);
+  if (Attr) {
+    D->addAttr(Attr);
   }
-
-  S.AddAnnotationAttr(D, AL, Str, Args);
 }
 
 static void handleAlignValueAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
diff --git a/clang/lib/Sema/SemaStmtAttr.cpp b/clang/lib/Sema/SemaStmtAttr.cpp
index ee6630bdb429c6..47e8f1ad4dde8f 100644
--- a/clang/lib/Sema/SemaStmtAttr.cpp
+++ b/clang/lib/Sema/SemaStmtAttr.cpp
@@ -698,7 +698,7 @@ static Attr *ProcessStmtAttribute(Sema &S, Stmt *St, const ParsedAttr &A,
   case ParsedAttr::AT_NoConvergent:
     return handleNoConvergentAttr(S, St, A, Range);
   case ParsedAttr::AT_Annotate:
-    return handleAnnotateAttr(S, St, A, Range);
+    return S.CreateAnnotationAttr(A);
   default:
     // N.B., ClangAttrEmitter.cpp emits a diagnostic helper that ensures a
     // declaration attribute is not written on a statement, but this code is
diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp
index 02f12f5c2d4220..2f60c0beb22e73 100644
--- a/clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -2188,9 +2188,8 @@ TemplateInstantiator::TransformAnnotateAttr(const AnnotateAttr *AA) {
   SmallVector<Expr *> Args;
   for (Expr *Arg : AA->args()) {
     ExprResult Res = getDerived().TransformExpr(Arg);
-    if (!Res.isUsable())
-      return AA;
-    Args.push_back(Res.get());
+    if (Res.isUsable())
+      Args.push_back(Res.get());
   }
   return AnnotateAttr::CreateImplicit(getSema().Context, AA->getAnnotation(),
                                       Args.data(), Args.size(), AA->getRange());
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 34558e1a005d5a..6b1af35f5c80a8 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -230,7 +230,10 @@ static void instantiateDependentAnnotationAttr(
     ActualArgs.insert(ActualArgs.begin(), Args.begin() + 1, Args.end());
     std::swap(Args, ActualArgs);
   }
-  S.AddAnnotationAttr(New, *Attr, Str, Args);
+  auto *AA = S.CreateAnnotationAttr(*Attr, Str, Args);
+  if (AA) {
+    New->addAttr(AA);
+  }
 }
 
 static Expr *instantiateDependentFunctionAttrCondition(
diff --git a/clang/utils/TableGen/ClangAttrEmitter.cpp b/clang/utils/TableGen/ClangAttrEmitter.cpp
index 4890d249c6d8f7..5e4827ec4a7c65 100644
--- a/clang/utils/TableGen/ClangAttrEmitter.cpp
+++ b/clang/utils/TableGen/ClangAttrEmitter.cpp
@@ -3282,16 +3282,17 @@ namespace {
 } // end anonymous namespace
 
 static const AttrClassDescriptor AttrClassDescriptors[] = {
-    {"ATTR", "Attr"},
-    {"TYPE_ATTR", "TypeAttr"},
-    {"STMT_ATTR", "StmtAttr"},
-    {"DECL_OR_STMT_ATTR", "DeclOrStmtAttr"},
-    {"INHERITABLE_ATTR", "InheritableAttr"},
-    {"DECL_OR_TYPE_ATTR", "DeclOrTypeAttr"},
-    {"INHERITABLE_PARAM_ATTR", "InheritableParamAttr"},
-    {"INHERITABLE_PARAM_OR_STMT_ATTR", "InheritableParamOrStmtAttr"},
-    {"PARAMETER_ABI_ATTR", "ParameterABIAttr"},
-    {"HLSL_ANNOTATION_ATTR", "HLSLAnnotationAttr"}};
+  { "ATTR", "Attr" },
+  { "TYPE_ATTR", "TypeAttr" },
+  { "STMT_ATTR", "StmtAttr" },
+  { "DECL_OR_STMT_ATTR", "DeclOrStmtAttr" },
+  { "INHERITABLE_ATTR", "InheritableAttr" },
+  { "DECL_OR_TYPE_ATTR", "DeclOrTypeAttr" },
+  { "INHERITABLE_PARAM_ATTR", "InheritableParamAttr" },
+  { "INHERITABLE_PARAM_OR_STMT_ATTR", "InheritableParamOrStmtAttr" },
+  { "PARAMETER_ABI_ATTR", "ParameterABIAttr" },
+  { "HLSL_ANNOTATION_ATTR", "HLSLAnnotationAttr"}
+};
 
 static void emitDefaultDefine(raw_ostream &OS, StringRef name,
                               const char *superName) {



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