1 files changed, 44 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/fold-cstring.c b/gcc/testsuite/gcc.dg/fold-cstring.c
new file mode 100644
index 0000000..f92b120
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fold-cstring.c
@@ -0,0 +1,44 @@
+/* { dg-do run } */
+/* { dg-options "-O" } */
+
+/* The following are testcases for native_interpret_int,
+   native_interpret_complex and native_interpret_vector decoding
+   pieces of a string constant encoded by native_encode_string.  */
+
+extern void abort (void);
+
+/* We should fold all reads from xconstant and eliminate it, removing
+   the reference to blah which cannot be resolved at link time.  */
+extern int blah;
+
+static const struct {
+    int *y;
+    const char x[32] __attribute__((aligned(32)));
+} xconstant = { &blah, "01234567899876543210123456789000" };
+
+typedef int v4si __attribute__((vector_size(16)));
+
+int main()
+{
+  if (sizeof (int) != 4)
+    return 0;
+  if (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+    {
+      if (*(int *)&xconstant.x[4] != 0x34353637)
+	abort ();
+      if ((*(v4si *)&xconstant.x[16])[1] != 0x31323334)
+	abort ();
+      if (__imag (*(_Complex int *)&xconstant.x[8]) != 0x37363534)
+	abort ();
+    }
+  else if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+    {
+      if (*(int *)&xconstant.x[4] != 0x37363534)
+	abort ();
+      if ((*(v4si *)&xconstant.x[16])[1] != 0x34333231)
+	abort ();
+      if (__imag (*(_Complex int *)&xconstant.x[8]) != 0x34353637)
+	abort ();
+    }
+  return 0;
+}