gcc/testsuite/gcc.dg/tree-ssa/ldist-31.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-loop-distribution -ftree-loop-distribute-patterns -fdump-tree-ldist-details" } */
   3
   4 #define M (256)
   5 #define N (512)
   6 int a[M][N], b[M][N], c[M];
   7
   8 void
   9 foo (void)
  10 {
  11   for (int i = M - 1; i >= 0; --i)
  12     {
  13       c[i] = 0;
  14       for (unsigned j = N; j > 0; --j)
  15         a[i][j - 1] = b[i][j - 1];
  16     }
  17 }
  18
  19 /* { dg-final { scan-tree-dump-times "Loop nest . distributed: split to 0 loops and 2 library" 1 "ldist" } } */