Adding code gen tests for writable and shared string literals.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44397 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/writable-strings.c b/test/CodeGen/writable-strings.c
new file mode 100644
index 0000000..64b2492
--- /dev/null
+++ b/test/CodeGen/writable-strings.c
@@ -0,0 +1,8 @@
+// RUN: clang -emit-llvm -fwritable-string %s
+
+int main() {
+    char *str = "abc";
+    str[0] = '1';
+    printf("%s", str);
+}
+