1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-33.c b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-33.c
new file mode 100644
index 00000000000..a2a24a7e4e3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-33.c
@@ -0,0 +1,46 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O1 -fscalar-evolutions -fdump-tree-scev-details -fall-data-deps -fdump-tree-ddall" } */
+
+void bar (int);
+
+#define N 100
+#define NPad 10
+#define M 32
+
+void foo ()
+{
+  short coefs[2*M];
+  short input[2*N];
+  short output[2*N];
+  
+  int    sum_real, sum_imag;
+  int    i,j,k;
+  
+  k = NPad;
+  for (i = 0; i < N; i++) 
+    {
+      sum_real = 0;
+      sum_imag = 0;
+      for (j = 0; j < M; j++) 
+	{
+	  sum_real +=
+	    input[2*k-2*j+1]*coefs[2*j+1] - input[2*k-2*j]*coefs[2*j];
+	  
+	  sum_imag +=
+	    input[2*k-2*j]*coefs[2*j+1] + input[2*k-2*j+1]*coefs[2*j];
+	}
+      output[2*i+1] = sum_imag;
+      output[2*i] = sum_real;
+      k++; 
+    }
+  bar (sum_imag);
+}
+
+/* The following evolution functions have to be detected:
+   
+   i  ->  {0, +, 1}_1
+   j  ->  {0, +, 1}_2
+
+*/
+
+/* { dg-final { diff-tree-dumps "ddall" } } */