add support for codegening CXXZeroInitValueExprs

llvm-svn: 84418

2 files changed, 14 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index 01f719386c7..88fdb542f3c 100644
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -112,6 +112,7 @@ public:
   void VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E);
   void VisitCXXConstructExpr(const CXXConstructExpr *E);
   void VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E);
+  void VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *E);
 
   void VisitVAArgExpr(VAArgExpr *E);
 
@@ -439,6 +440,11 @@ void AggExprEmitter::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E) {
   CGF.EmitCXXExprWithTemporaries(E, DestPtr, VolatileDest, IsInitializer);
 }
 
+void AggExprEmitter::VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *E) {
+  LValue lvalue = LValue::MakeAddr(DestPtr, Qualifiers());
+  EmitNullInitializationToLValue(lvalue, E->getType());
+}
+
 void AggExprEmitter::EmitInitializationToLValue(Expr* E, LValue LV) {
   // FIXME: Ignore result?
   // FIXME: Are initializers affected by volatile?
diff --git a/clang/test/CodeGenCXX/default-arg-temps.cpp b/clang/test/CodeGenCXX/default-arg-temps.cpp
index 2651446669b..8385aff6291 100644
--- a/clang/test/CodeGenCXX/default-arg-temps.cpp
+++ b/clang/test/CodeGenCXX/default-arg-temps.cpp
@@ -15,7 +15,7 @@ public:
 
 void g() {
   // RUN: grep "call void @_ZN1TC1Ev" %t | count 4 &&
-  // RUN: grep "call void @_ZN1TD1Ev" %t | count 4
+  // RUN: grep "call void @_ZN1TD1Ev" %t | count 4 &&
   f();
   f();
 
@@ -23,3 +23,10 @@ void g() {
   X b(a);
   X c = a;
 }
+
+
+// RUN: grep memset %t
+class obj{ int a; float b; double d; };
+void h() {
+  obj o = obj();
+}