1 files changed, 32 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.c-torture/compile/pr46248.c b/gcc-4.9/gcc/testsuite/gcc.c-torture/compile/pr46248.c
new file mode 100644
index 000000000..6d3be2a65
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.c-torture/compile/pr46248.c
@@ -0,0 +1,32 @@
+/* PR rtl-optimization/46248 */
+
+struct S
+{
+  int s;
+};
+
+void
+foo (unsigned char *x, int y, struct S *z)
+{
+  const int l1 = y;
+  const int l2 = y + l1;
+  const int l3 = y + l2;
+  const int l4 = y + l3;
+  const int l5 = y + l4;
+  const int l6 = y + l5;
+  const int l7 = y + l6;
+  int i;
+  for (i = 0; i < 8; i++)
+    {
+      int a = x[l3] - x[l4];
+      int b = x[l4] - x[l5];
+      int c = x[l5] - x[l6];
+      int d = (b >= 0 ? b : -b) - (((a >= 0 ? a : -a) + (c >= 0 ? c : -c)) >> 1);
+      if (d < z->s * 2)
+	{
+	  int v = d * (-b > 0 ? 1 : -1);
+	  x[l2] += v >> 3;
+	  x[l7] -= v >> 3;
+	}
+    }
+}