Codegen CXXConstructExprs with trivial constructors as constants.
Eliminates a lot of spurious global initializers, fixing PR6205.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95077 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/global-init.cpp b/test/CodeGenCXX/global-init.cpp
index b375aef..fd8c159 100644
--- a/test/CodeGenCXX/global-init.cpp
+++ b/test/CodeGenCXX/global-init.cpp
@@ -7,6 +7,10 @@
struct B { B(); ~B(); };
+struct C { void *field; };
+
+// CHECK: @c = global %struct.C zeroinitializer, align 8
+
// CHECK: call void @_ZN1AC1Ev(%struct.A* @a)
// CHECK: call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.A*)* @_ZN1AD1Ev to void (i8*)*), i8* getelementptr inbounds (%struct.A* @a, i32 0, i32 0), i8* bitcast (i8** @__dso_handle to i8*))
A a;
@@ -14,3 +18,9 @@
// CHECK: call void @_ZN1BC1Ev(%struct.A* @b)
// CHECK: call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.A*)* @_ZN1BD1Ev to void (i8*)*), i8* getelementptr inbounds (%struct.A* @b, i32 0, i32 0), i8* bitcast (i8** @__dso_handle to i8*))
B b;
+
+// PR6205: this should not require a global initializer
+// CHECK-NOT: call void @_ZN1CC1Ev(%struct.C* @c)
+C c;
+
+// CHECK: define internal void @__cxx_global_initialization() {