gcc/testsuite/gcc.c-torture/execute/loop-ivopts-1.c

   1 /* From PR 18977.  */
   2 void foo(float * x);
   3
   4 int main()
   5 {
   6   float x[4];
   7   foo (x);
   8   return 0;
   9 }
  10
  11 void foo (float *x)
  12 {
  13     int i,j,k;
  14     float temp;
  15     static float t16[16]={1.,2.,3.,4.,5.,6.,7.,8.,9.,
  16                           10.,11.,12.,13.,14.,15.,16.};
  17     static float tmp[4]={0.,0.,0.,0.};
  18
  19     for (i=0; i<4; i++) {
  20         k = 3 - i;
  21         temp = t16[5*k];
  22         for(j=k+1; j<4; j++) {
  23             tmp[k] = t16[k+  j*4] * temp;
  24         }
  25     }
  26     x[0] = tmp[0];
  27     x[1] = tmp[1];
  28     x[2] = tmp[2];
  29     x[3] = tmp[3];
  30 }