gcc/testsuite/gcc.dg/graphite/pr87931.c

   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
  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 }