Propagate __attribute__((returns_twice)) from C to IL.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141002 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index d9e4df0..79afbe5 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -1427,6 +1427,23 @@
D->addAttr(::new (S.Context) UnusedAttr(Attr.getRange(), S.Context));
}
+static void handleReturnsTwiceAttr(Sema &S, Decl *D,
+ const AttributeList &Attr) {
+ // check the attribute arguments.
+ if (Attr.hasParameterOrArguments()) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
+ return;
+ }
+
+ if (!isa<FunctionDecl>(D)) {
+ S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
+ << Attr.getName() << ExpectedFunction;
+ return;
+ }
+
+ D->addAttr(::new (S.Context) ReturnsTwiceAttr(Attr.getRange(), S.Context));
+}
+
static void handleUsedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
// check the attribute arguments.
if (Attr.hasParameterOrArguments()) {
@@ -3567,6 +3584,9 @@
handleArcWeakrefUnavailableAttr (S, D, Attr);
break;
case AttributeList::AT_unused: handleUnusedAttr (S, D, Attr); break;
+ case AttributeList::AT_returns_twice:
+ handleReturnsTwiceAttr(S, D, Attr);
+ break;
case AttributeList::AT_used: handleUsedAttr (S, D, Attr); break;
case AttributeList::AT_visibility: handleVisibilityAttr (S, D, Attr); break;
case AttributeList::AT_warn_unused_result: handleWarnUnusedResult(S, D, Attr);