gcc/testsuite/gcc.dg/tree-ssa/ldist-17.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-loop-distribution -ftree-loop-distribute-patterns -fdump-tree-ldist-details -fdisable-tree-cunroll -fdisable-tree-cunrolli" } */
   3
   4 typedef int mad_fixed_t;
   5 struct mad_pcm
   6 {
   7   unsigned int samplerate;
   8   unsigned short channels;
   9   unsigned short length;
  10   mad_fixed_t samples[2][1152];
  11 };
  12 struct mad_synth
  13 {
  14   mad_fixed_t filter[2][2][2][16][8];
  15   unsigned int phase;
  16   struct mad_pcm pcm;
  17 };
  18 void mad_synth_mute (struct mad_synth *synth);
  19 void
  20 mad_synth_mute (struct mad_synth *synth)
  21 {
  22   unsigned int ch;
  23   unsigned int s;
  24   unsigned int v;
  25
  26   ch = 0U;
  27   while (ch < 2U)
  28     {
  29       s = 0U;
  30       while (s < 16U)
  31         {
  32           v = 0U;
  33           while (v < 8U)
  34             {
  35               synth->filter[ch][1][1][s][v] = 0;
  36               synth->filter[ch][1][0][s][v] = 0;
  37               synth->filter[ch][0][1][s][v] = 0;
  38               synth->filter[ch][0][0][s][v] = 0;
  39               v++;
  40             }
  41           s++;
  42         }
  43       ch++;
  44     }
  45   return;
  46 }
  47
  48 /* { dg-final { scan-tree-dump "Loop nest . distributed: split to 0 loops and 1 library calls" "ldist" } } */
  49 /* { dg-final { scan-tree-dump-times "generated memset zero" 1 "ldist" } } */