1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr38931.c b/gcc/testsuite/gcc.target/i386/pr38931.c
new file mode 100644
index 000000000..dd35dec75
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr38931.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse" } */
+
+typedef int __m64 __attribute__ ((__vector_size__ (8)));
+
+extern __m64 foo () ;
+
+void bar (const int input_bpl, const unsigned char *input,
+	  unsigned char *output, unsigned long x1)
+{
+  unsigned char *pix_end_ptr = output + x1 * 4;
+  __m64 m_original = { 0, 0 };
+  __m64 m_base_addr = __builtin_ia32_vec_init_v2si (0, input_bpl);
+  __m64 m_addr = __builtin_ia32_paddd (m_original, m_base_addr);
+  __m64 *a0 = (__m64 *) input;
+
+  for (; output < pix_end_ptr; output += 4)
+    {
+      a0 = (__m64 *) (input + __builtin_ia32_vec_ext_v2si (m_addr, 0));
+      m_addr = foo ();
+      __builtin_prefetch (a0, 0);
+    }
+}