[debuginfo-tests] Add string NRVO test for PR34513

It should pass in -O0 and -O1 after r313400 and r313399.

llvm-svn: 313401

1 files changed, 27 insertions, 0 deletions

diff --git a/debuginfo-tests/nrvo-string.cpp b/debuginfo-tests/nrvo-string.cpp
new file mode 100644
index 0000000..18acebb
--- /dev/null
+++ b/debuginfo-tests/nrvo-string.cpp
@@ -0,0 +1,27 @@
+// This ensures that DW_OP_deref is inserted when necessary, such as when NRVO
+// of a string object occurs in C++.
+//
+// RUN: %clangxx -O0 -fno-exceptions %target_itanium_abi_host_triple %s -o %t.out -g
+// RUN: %test_debuginfo %s %t.out
+// RUN: %clangxx -O1 -fno-exceptions %target_itanium_abi_host_triple %s -o %t.out -g
+// RUN: %test_debuginfo %s %t.out
+//
+// PR34513
+
+struct string {
+  string() {}
+  string(int i) : i(i) {}
+  ~string() {}
+  int i = 0;
+};
+string get_string() {
+  string unused;
+  string result = 3;
+// DEBUGGER: break 21
+  return result;
+}
+int main() { get_string(); }
+
+// DEBUGGER: r
+// DEBUGGER: print result.i
+// CHECK:  = 3