1 files changed, 67 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr53174.c b/gcc/testsuite/gcc.dg/pr53174.c
new file mode 100644
index 000000000..37c9390e5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr53174.c
@@ -0,0 +1,67 @@
+/* PR debug/53174 */
+/* { dg-do compile } */
+/* { dg-options "-Ofast -g" } */
+
+int w, h;
+
+void
+bar (float (*x)[4], int y, int z)
+{
+  int a, b, c, d, e, f, g;
+
+  a = 2;
+  b = 2;
+  c = 274;
+  d = 274;
+  if (!z)
+    a = 12;
+  if (!y)
+    b = 12;
+  if (z + 266 >= h - 2)
+    c = 8 + h - z;
+  if (y + 266 >= w - 2)
+    d = 8 + w - y;
+  for (e = a; e < c; e++)
+    for (f = b, g = e * 276 + f; f < d; f++, g++)
+      {
+	float (*h)[4] = x + (g - 277);
+	float k = (*h)[0];
+	float l = (*h)[1];
+	float m = (*h)[2];
+	h++;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	h++;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	h += 274;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	h += 2;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	h += 274;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	h++;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	h++;
+	k += (*h)[0];
+	l += (*h)[1];
+	m += (*h)[2];
+	k *= 0.125f;
+	l *= 0.125f;
+	m *= 0.125f;
+	k = k + (x[g][1] - l);
+	m = m + (x[g][1] - l);
+	x[g][0] = k;
+	x[g][2] = m;
+      }
+}