--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/vect/pr48052.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int_mult } */
+
+int foo(int* A, int* B,  unsigned start, unsigned BS)
+{
+  int s = 0;
+  for (unsigned k = start;  k < start + BS; k++)
+    {
+      s += A[k] * B[k];
+    }
+
+  return s;
+}
+
+int bar(int* A, int* B, unsigned BS)
+{
+  int s = 0;
+  for (unsigned k = 0;  k < BS; k++)
+    {
+      s += A[k] * B[k];
+    }
+
+  return s;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" } } */