Don't zero-initialize default-initialized local variables that have

trivial default constructors. This generated-code regression was
caused by r131796, which had simplified the handling of default
initialization in Sema. Fixes <rdar://problem/9694300>.

llvm-svn: 134260

1 files changed, 16 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/constructor-init.cpp b/clang/test/CodeGenCXX/constructor-init.cpp
index 47e3b7b0bb9..f439083c077 100644
--- a/clang/test/CodeGenCXX/constructor-init.cpp
+++ b/clang/test/CodeGenCXX/constructor-init.cpp
@@ -133,3 +133,19 @@ template<typename T>
 X<T>::X(const X &other) : start(0), end(0) { }
 
 X<int> get_X(X<int> x) { return x; }
+
+namespace rdar9694300 {
+  struct X {
+    int x;
+  };
+
+  // CHECK: define void @_ZN11rdar96943001fEv
+  void f() {
+    // CHECK: alloca
+    X x;
+    // CHECK-NEXT: [[I:%.*]] = alloca i32
+    // CHECK-NEXT: store i32 17, i32* [[I]]
+    int i = 17;
+    // CHECK-NEXT: ret void
+  }
+}