fix PR4067: [Linux kernel] cannot aggregate codegen stmtexpr as lvalue
llvm-svn: 70067
diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index c49592ea..86993fb 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -168,8 +168,10 @@
case Expr::ObjCKVCRefExprClass:
return EmitObjCKVCRefLValue(cast<ObjCKVCRefExpr>(E));
case Expr::ObjCSuperExprClass:
- return EmitObjCSuperExpr(cast<ObjCSuperExpr>(E));
+ return EmitObjCSuperExprLValue(cast<ObjCSuperExpr>(E));
+ case Expr::StmtExprClass:
+ return EmitStmtExprLValue(cast<StmtExpr>(E));
case Expr::UnaryOperatorClass:
return EmitUnaryOpLValue(cast<UnaryOperator>(E));
case Expr::ArraySubscriptExprClass:
@@ -1195,10 +1197,21 @@
}
LValue
-CodeGenFunction::EmitObjCSuperExpr(const ObjCSuperExpr *E) {
+CodeGenFunction::EmitObjCSuperExprLValue(const ObjCSuperExpr *E) {
return EmitUnsupportedLValue(E, "use of super");
}
+LValue CodeGenFunction::EmitStmtExprLValue(const StmtExpr *E) {
+
+ // Can only get l-value for message expression returning aggregate type
+ RValue RV = EmitAnyExprToTemp(E);
+ // FIXME: can this be volatile?
+ return LValue::MakeAddr(RV.getAggregateAddr(),
+ E->getType().getCVRQualifiers(),
+ getContext().getObjCGCAttrKind(E->getType()));
+}
+
+
RValue CodeGenFunction::EmitCallExpr(llvm::Value *Callee, QualType CalleeType,
CallExpr::const_arg_iterator ArgBeg,
CallExpr::const_arg_iterator ArgEnd,