Add support for cdecl attribute. (As far as I know, it doesn't affect CodeGen
unless we start implementing command-line switches which override the default
calling convention, so the effect is mostly to silence unknown attribute
warnings.)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86571 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 18f57da..803be13 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -1008,6 +1008,38 @@
}
+static void HandleCDeclAttr(Decl *d, const AttributeList &Attr, Sema &S) {
+ // Attribute has no arguments.
+ if (Attr.getNumArgs() != 0) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
+ return;
+ }
+
+ // Attribute can be applied only to functions.
+ if (!isa<FunctionDecl>(d)) {
+ S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
+ << Attr.getName() << 0 /*function*/;
+ return;
+ }
+
+ // cdecl and fastcall attributes are mutually incompatible.
+ if (d->getAttr<FastCallAttr>()) {
+ S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible)
+ << "cdecl" << "fastcall";
+ return;
+ }
+
+ // cdecl and stdcall attributes are mutually incompatible.
+ if (d->getAttr<StdCallAttr>()) {
+ S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible)
+ << "cdecl" << "stdcall";
+ return;
+ }
+
+ d->addAttr(::new (S.Context) CDeclAttr());
+}
+
+
static void HandleStdCallAttr(Decl *d, const AttributeList &Attr, Sema &S) {
// Attribute has no arguments.
if (Attr.getNumArgs() != 0) {
@@ -1822,6 +1854,7 @@
case AttributeList::AT_analyzer_noreturn:
HandleAnalyzerNoReturnAttr (D, Attr, S); break;
case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break;
+ case AttributeList::AT_cdecl: HandleCDeclAttr (D, Attr, S); break;
case AttributeList::AT_constructor: HandleConstructorAttr(D, Attr, S); break;
case AttributeList::AT_deprecated: HandleDeprecatedAttr(D, Attr, S); break;
case AttributeList::AT_destructor: HandleDestructorAttr(D, Attr, S); break;