Add a testcase for PR target/64114

	PR target/64114
	* gcc.target/i386/pr64114.c: New test.

From-SVN: r218182

gcc/testsuite/ChangeLog

+2014-11-29  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/64114
+	* gcc.target/i386/pr64114.c: New test.
+
 2014-11-29  Joseph Myers  <joseph@codesourcery.com>
 
 	PR preprocessor/41698

gcc/testsuite/gcc.target/i386/pr64114.c

+/* { dg-do compile } */
+/* { dg-options "-O -mstringop-strategy=vector_loop -mno-push-args" } */
+
+extern float *ptrs[];
+extern int incs[];
+
+struct big
+{
+  int i[0x10000];
+};
+
+extern void bar (struct big b);
+
+struct big
+foo (int n)
+{
+  struct big b;
+
+  int inc14 = incs[15], inc16 = n, inc17 = n, inc19 = incs[3];
+  float *ptr0 = ptrs[1], *ptr14 = ptrs[14], *ptr16 = ptrs[16];
+  while (n--)
+    *ptr0 += *ptr14 += inc14 += *ptr16 += inc16 += inc17 += inc19, bar (b);
+  return b;
+}