1 /* { dg-do compile } */
2 /* { dg-options "-O3 -fno-tree-copy-prop -fgraphite-identity" } */
3 
4 #define N 40
5 #define M 128
6 float in[N+M];
7 float coeff[M];
8 float fir_out[N];
9 
fir()10 void fir ()
11 {
12   int i,j,k;
13   float diff;
14 
15   for (i = 0; i < N; i++) {
16     diff = 0;
17     for (j = 0; j < M; j++) {
18       diff += in[j+i]*coeff[j];
19     }
20     fir_out[i] = diff;
21   }
22 }
23