Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang/lib/Basic/Attributes.cpp

@@ -0,0 +1,28 @@
+#include "clang/Basic/Attributes.h"
+#include "clang/Basic/AttrSubjectMatchRules.h"
+#include "clang/Basic/IdentifierTable.h"
+#include "llvm/ADT/StringSwitch.h"
+using namespace clang;
+
+int clang::hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope,
+                        const IdentifierInfo *Attr, const TargetInfo &Target,
+                        const LangOptions &LangOpts) {
+  StringRef Name = Attr->getName();
+  // Normalize the attribute name, __foo__ becomes foo.
+  if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
+    Name = Name.substr(2, Name.size() - 4);
+
+#include "clang/Basic/AttrHasAttributeImpl.inc"
+
+  return 0;
+}
+
+const char *attr::getSubjectMatchRuleSpelling(attr::SubjectMatchRule Rule) {
+  switch (Rule) {
+#define ATTR_MATCH_RULE(NAME, SPELLING, IsAbstract)                            \
+  case attr::NAME:                                                             \
+    return SPELLING;
+#include "clang/Basic/AttrSubMatchRulesList.inc"
+  }
+  llvm_unreachable("Invalid subject match rule");
+}