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[clang] Instantiate attributes on LabelDecls #115924

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Merged
merged 12 commits into from
Nov 15, 2024
Merged

[clang] Instantiate attributes on LabelDecls #115924

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da2e66a
[clang] Instantiate attributes on other decl types
ericastor Nov 12, 2024
a6b8309
Merge branch 'llvm:main' into attributes
ericastor Nov 12, 2024
eb4b3a2
Include attributes on LabelStmts (forwarding from decls) in AST dumps
ericastor Nov 14, 2024
6ba54c4
Scope this change back to just applying to LabelDecls
ericastor Nov 14, 2024
a9f73b9
Merge branch 'llvm:main' into attributes
ericastor Nov 14, 2024
627a4d2
Add test using standard attribute
ericastor Nov 14, 2024
e0d7698
Remove unnecessary use of plugins for testing
ericastor Nov 14, 2024
fb705ad
Fix the no-attributes case
ericastor Nov 14, 2024
9622499
Clean up & simplify tests
ericastor Nov 15, 2024
a87977a
Merge branch 'main' into attributes
ericastor Nov 15, 2024
fe5f361
Add actual test (missed in previous commit)
ericastor Nov 15, 2024
778e2b5
Merge branch 'main' into attributes
ericastor Nov 15, 2024
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7 changes: 7 additions & 0 deletions clang/include/clang/AST/ASTNodeTraverser.h
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Original file line number Diff line number Diff line change
Expand Up @@ -800,6 +800,13 @@ class ASTNodeTraverser
Visit(A);
}

void VisitLabelStmt(const LabelStmt *Node) {
if (Node->getDecl()->hasAttrs()) {
for (const auto *A : Node->getDecl()->getAttrs())
Visit(A);
}
}

void VisitCXXCatchStmt(const CXXCatchStmt *Node) {
Visit(Node->getExceptionDecl());
}
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1 change: 1 addition & 0 deletions clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
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Expand Up @@ -990,6 +990,7 @@ Decl *
TemplateDeclInstantiator::VisitLabelDecl(LabelDecl *D) {
LabelDecl *Inst = LabelDecl::Create(SemaRef.Context, Owner, D->getLocation(),
D->getIdentifier());
SemaRef.InstantiateAttrs(TemplateArgs, D, Inst, LateAttrs, StartingScope);
Owner->addDecl(Inst);
return Inst;
}
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55 changes: 55 additions & 0 deletions clang/test/SemaCXX/attr-annotate-ast.cpp
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@@ -0,0 +1,55 @@
// RUN: %clang_cc1 -std=gnu++20 -fsyntax-only -ast-dump %s | FileCheck %s

void f() {
[[clang::annotate("decl", 1)]] int i = 0;
[[clang::annotate("stmt", 2)]] i += 1;
[[clang::annotate("label", 3)]] label1:
i += 2;
}

// CHECK: -FunctionDecl {{.*}} f 'void ()'
// CHECK: -VarDecl {{.*}} used i 'int'
// CHECK: -AnnotateAttr {{.*}} "decl"
// CHECK: -IntegerLiteral {{.*}} 'int' 1
// CHECK: -AttributedStmt
// CHECK: -AnnotateAttr {{.*}} "stmt"
// CHECK: -IntegerLiteral {{.*}} 'int' 2
// CHECK: -LabelStmt {{.*}} 'label1'
// CHECK: -AnnotateAttr {{.*}} "label"
// CHECK: -IntegerLiteral {{.*}} 'int' 3
// CHECK: -CompoundAssignOperator

template <typename T> void g() {
[[clang::annotate("tmpl_decl", 4)]] T j = 0;
[[clang::annotate("tmpl_stmt", 5)]] j += 1;
[[clang::annotate("tmpl_label", 6)]] label2:
j += 2;
}

// CHECK: -FunctionTemplateDecl {{.*}} g
// CHECK: -VarDecl {{.*}} referenced j 'T'
// CHECK: -AnnotateAttr {{.*}} "tmpl_decl"
// CHECK: -IntegerLiteral {{.*}} 'int' 4
// CHECK: -AttributedStmt
// CHECK: -AnnotateAttr {{.*}} "tmpl_stmt"
// CHECK: -IntegerLiteral {{.*}} 'int' 5
// CHECK: -LabelStmt {{.*}} 'label2'
// CHECK: -AnnotateAttr {{.*}} "tmpl_label"
// CHECK: -IntegerLiteral {{.*}} 'int' 6
// CHECK: -CompoundAssignOperator

void h() {
g<int>();
}

// CHECK: -FunctionDecl {{.*}} used g 'void ()' implicit_instantiation
// CHECK: -VarDecl {{.*}} used j 'int'
// CHECK: -AnnotateAttr {{.*}} "tmpl_decl"
// CHECK: -IntegerLiteral {{.*}} 'int' 4
// CHECK: -AttributedStmt
// CHECK: -AnnotateAttr {{.*}} Implicit "tmpl_stmt"
// CHECK: -IntegerLiteral {{.*}} 'int' 5
// CHECK: -LabelStmt {{.*}} 'label2'
// CHECK: -AnnotateAttr {{.*}} "tmpl_label"
// CHECK: -IntegerLiteral {{.*}} 'int' 6
// CHECK: -CompoundAssignOperator