ir-gen for initialization, in synthesize copy constructor, 
 of base/field which have trivial copy constructor.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78516 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/copy-constructor-synthesis.cpp b/test/CodeGenCXX/copy-constructor-synthesis.cpp
new file mode 100644
index 0000000..edc0c0e
--- /dev/null
+++ b/test/CodeGenCXX/copy-constructor-synthesis.cpp
@@ -0,0 +1,55 @@
+// RUNX: clang-cc -triple x86_64-apple-darwin -S %s -o %t-64.s &&
+// RUNX: FileCheck -check-prefix LP64 --input-file=%t-64.s %s &&
+// RUN: clang-cc -triple i386-apple-darwin -S %s -o %t-32.s &&
+// RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s &&
+// RUN: true
+
+extern "C" int printf(...);
+
+int init = 100;
+
+struct M {
+  int iM;
+  M() : iM(init++) {}
+};
+
+struct N {
+  int iN;
+  N() : iN(200) {}
+  N(N const & arg){this->iN = arg.iN; }
+};
+
+struct P {
+  int iP;
+  P() : iP(init++) {}
+};
+
+
+struct X  : M, N, P { // ...
+	X(){}
+        P p0;
+	void pr() { printf("iM = %d iN = %d, m1.iM = %d\n", iM, iN, m1.iM); 
+                    printf("im = %d p0.iP = %d, p1.iP = %d\n", iP, p0.iP, p1.iP); }
+	M m1;
+        P p1;
+};
+
+int main()
+{
+	X a;
+	X b(a);
+        b.pr();
+	X x;
+	X c(x);
+        c.pr();
+}
+#if 0
+// -m64 does not work due to unrelated llvm bug!
+// CHECK-LP64: .globl  __ZN1XC1ERK1X
+// CHECK-LP64: .weak_definition __ZN1XC1ERK1X
+// CHECK-LP64: __ZN1XC1ERK1X:
+#endif
+
+// CHECK-LP32: .globl  __ZN1XC1ERK1X
+// CHECK-LP32: .weak_definition __ZN1XC1ERK1X
+// CHECK-LP32: __ZN1XC1ERK1X: