Add #pragma clang attribute

This is a recommit of r300539 that was reverted in r300543 due to test failures.
The original commit message is displayed below:

The new '#pragma clang attribute' directive can be used to apply attributes to
multiple declarations. An attribute must satisfy the following conditions to
be supported by the pragma:
- It must have a subject list that's defined in the TableGen file.
- It must be documented.
- It must not be late parsed.
- It must have a GNU/C++11 spelling.

Differential Revision: https://reviews.llvm.org/D30009

llvm-svn: 300556

1 files changed, 106 insertions, 0 deletions

diff --git a/clang/test/Misc/pragma-attribute-cxx.cpp b/clang/test/Misc/pragma-attribute-cxx.cpp
new file mode 100644
index 00000000000..c241c4e4bdb
--- /dev/null
+++ b/clang/test/Misc/pragma-attribute-cxx.cpp
@@ -0,0 +1,106 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -fcxx-exceptions %s
+// RUN: %clang_cc1 -fsyntax-only -ast-dump -ast-dump-filter test -std=c++11 -fcxx-exceptions %s | FileCheck %s
+// expected-no-diagnostics
+
+class testClass1 {
+};
+// CHECK-LABEL: CXXRecordDecl{{.*}} testClass1
+// CHECK-NOT: AnnotateAttr
+
+#pragma clang attribute push (__attribute__((annotate("test"))), apply_to=any(record, field, variable, function, namespace, type_alias))
+
+class testClass2 {
+  void testMethod1(int param);
+
+  testClass2();
+
+  testClass2 *operator -> ();
+};
+// CHECK-LABEL: CXXRecordDecl{{.*}} testClass2
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+// CHECK: CXXMethodDecl{{.*}} testMethod1
+// CHECK-NEXT: ParmVarDecl{{.*}} param
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+// CHECK-NEXT: CXXConstructorDecl
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+// CHECK-NEXT: CXXMethodDecl{{.*}} operator->
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+
+#pragma clang attribute push (__attribute__((annotate("method"))), apply_to=any(record, field, variable, function, namespace, type_alias))
+
+void testClass2::testMethod1(int param) {
+
+#pragma clang attribute pop
+}
+// CHECK-LABEL: CXXMethodDecl{{.*}}prev{{.*}} testMethod1
+// CHECK-NEXT: ParmVarDecl{{.*}} param
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+// CHECK-NEXT: AnnotateAttr{{.*}} "method"
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+// CHECK-NEXT: AnnotateAttr{{.*}} "method"
+
+namespace testNamespace {
+}
+// CHECK-LABEL: NamespaceDecl{{.*}} testNamespace
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+
+class testClassForward;
+// CHECK-LABEL: CXXRecordDecl{{.*}} testClassForward
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+
+namespace testNamespaceAlias = testNamespace;
+// CHECK-LABEL: NamespaceAliasDecl{{.*}} testNamespaceAlias
+// CHECK-NOT: AnnotateAttr
+
+using testTypeAlias = testClass2;
+// CHECK-LABEL: TypeAliasDecl{{.*}} testTypeAlias
+// CHECK: AnnotateAttr{{.*}} "test"
+
+void testCatchVariable() {
+  try {
+  } catch (int testCatch) {
+  }
+  testCatchVariable();
+}
+// CHECK-LABEL: FunctionDecl{{.*}} testCatchVariable
+// CHECK: CXXCatchStmt
+// CHECK-NEXT: VarDecl{{.*}} testCatch
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+
+void testLambdaMethod() {
+  auto l = [] () { };
+  testLambdaMethod();
+}
+// CHECK-LABEL: FunctionDecl{{.*}} testLambdaMethod
+// CHECK: LambdaExpr
+// CHECK-NEXT: CXXRecordDecl
+// CHECK-NEXT: CXXMethodDecl{{.*}} operator()
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: AnnotateAttr{{.*}} "test"
+
+#pragma clang attribute pop
+
+#pragma clang attribute push (__attribute__((require_constant_initialization)), apply_to=variable(is_global))
+
+int testCI1 = 1;
+// CHECK-LABEL: VarDecl{{.*}} testCI1
+// CHECK-NEXT: IntegerLiteral
+// CHECK-NEXT: RequireConstantInitAttr
+
+#pragma clang attribute pop
+
+int testNoCI = 0;
+// CHECK-LABEL: VarDecl{{.*}} testNoCI
+// CHECK-NEXT: IntegerLiteral
+// CHECK-NOT: RequireConstantInitAttr
+
+// Check support for CXX11 style attributes
+#pragma clang attribute push ([[noreturn]], apply_to = function)
+
+void testNoReturn();
+// CHECK-LABEL: FunctionDecl{{.*}} testNoReturn
+// CHECK-NEXT: CXX11NoReturnAttr
+
+#pragma clang attribute pop