1 files changed, 27 insertions, 0 deletions
diff --git a/lib/Sema/SemaStmtAttr.cpp b/lib/Sema/SemaStmtAttr.cpp
index 01fa856132d7..4ee3412170a8 100644
--- a/lib/Sema/SemaStmtAttr.cpp
+++ b/lib/Sema/SemaStmtAttr.cpp
@@ -53,6 +53,31 @@ static Attr *handleFallThroughAttr(Sema &S, Stmt *St, const AttributeList &A,
   return ::new (S.Context) auto(Attr);
 }
 
+static Attr *handleSuppressAttr(Sema &S, Stmt *St, const AttributeList &A,
+                                SourceRange Range) {
+  if (A.getNumArgs() < 1) {
+    S.Diag(A.getLoc(), diag::err_attribute_too_few_arguments)
+        << A.getName() << 1;
+    return nullptr;
+  }
+
+  std::vector<StringRef> DiagnosticIdentifiers;
+  for (unsigned I = 0, E = A.getNumArgs(); I != E; ++I) {
+    StringRef RuleName;
+
+    if (!S.checkStringLiteralArgumentAttr(A, I, RuleName, nullptr))
+      return nullptr;
+
+    // FIXME: Warn if the rule name is unknown. This is tricky because only
+    // clang-tidy knows about available rules.
+    DiagnosticIdentifiers.push_back(RuleName);
+  }
+
+  return ::new (S.Context) SuppressAttr(
+      A.getRange(), S.Context, DiagnosticIdentifiers.data(),
+      DiagnosticIdentifiers.size(), A.getAttributeSpellingListIndex());
+}
+
 static Attr *handleLoopHintAttr(Sema &S, Stmt *St, const AttributeList &A,
                                 SourceRange) {
   IdentifierLoc *PragmaNameLoc = A.getArgAsIdent(0);
@@ -279,6 +304,8 @@ static Attr *ProcessStmtAttribute(Sema &S, Stmt *St, const AttributeList &A,
     return handleLoopHintAttr(S, St, A, Range);
   case AttributeList::AT_OpenCLUnrollHint:
     return handleOpenCLUnrollHint(S, St, A, Range);
+  case AttributeList::AT_Suppress:
+    return handleSuppressAttr(S, St, A, Range);
   default:
     // if we're here, then we parsed a known attribute, but didn't recognize
     // it as a statement attribute => it is declaration attribute