1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/pr42604.c b/gcc/testsuite/gcc.dg/vect/pr42604.c
new file mode 100644
index 000000000..14f255a40
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr42604.c
@@ -0,0 +1,35 @@
+/* PR debug/42604 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -ftree-vectorize -g -ffast-math" } */
+
+unsigned *d;
+unsigned short e;
+int f;
+float h[3][4];
+
+void
+test (unsigned short *b)
+{
+  int a, c, i;
+  float g[3];
+  unsigned j[32] = { 10, 0x63707274 };
+  for (i = 0; i < (int) j[0]; i++)
+    {
+      j[i * 3 + 2] = d[0];
+      d[0] += (j[i * 3 + 3] + 3) & -4;
+    }
+  for (a = 0; a < e; a++)
+    {
+      g[0] = g[1] = g[2] = 0;
+      for (c = 0; c < f; c++)
+	{
+	  g[0] += h[0][c] * b[c];
+	  g[1] += h[1][c] * b[c];
+	}
+      for (c = 0; c < 3; c++)
+	b[c] = 0 > ((int) g[c] < 65535 ? ((int) g[c]) : 65535)
+	  ? 0 : ((int) g[c]) < 65535 ? (int) g[c] : 65535;
+    }
+}
+
+/* { dg-final { cleanup-tree-dump "vect" } } */