gcc/testsuite/gcc.dg/tree-ssa/ifc-20040816-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-c -O2 -ftree-vectorize -fdump-tree-ifcvt-stats" { target *-*-* } } */
   3
   4 void foo(const int * __restrict__ zr_in,
   5                 const int * __restrict__ zi_in,
   6                 const int * __restrict__ zk_in,
   7                 int * __restrict__ zr_out,
   8                 int * __restrict__ zi_out,
   9                 int * __restrict__ zk_out,
  10                 int cr, int ci)
  11 {
  12   unsigned int pi;
  13   int tmp_r, tmp_i, tmp_k;
  14   for (pi = 0; pi < (512)*(512); pi++) {
  15     int zr = zr_in[pi];
  16     int zi = zi_in[pi];
  17     int zk = zk_in[pi];
  18
  19     if (zr*zr + zi*zi >= 4) {
  20       tmp_r = zr;
  21       tmp_i = zi;
  22       tmp_k = zk;
  23     } else {
  24       tmp_r = (zr*zr - zi*zi + cr);
  25       tmp_i = (2 * zr * zi + ci);
  26       tmp_k = zk + 1;
  27     }
  28     zr_out[pi] = tmp_r;
  29     zi_out[pi] = tmp_i;
  30     zk_out[pi] = tmp_k;
  31   }
  32 }
  33
  34
  35 /* { dg-final { scan-tree-dump-times "Applying if-conversion" 1 "ifcvt" } } */
  36 /* { dg-final { cleanup-tree-dump "ifcvt" } } */