(root)/
gcc-13.2.0/
gcc/
testsuite/
gcc.dg/
vect/
vect-reduc-1char-big-array.c
       1  /* { dg-require-effective-target vect_int } */
       2  
       3  #include <stdarg.h>
       4  #include "tree-vect.h"
       5  
       6  #define N 256
       7  
       8  unsigned char ub[N];
       9  unsigned char uc[N];
      10  unsigned char diff;
      11  
      12  __attribute__ ((noinline)) void
      13  main1 (unsigned char x, unsigned char max_result, unsigned char min_result)
      14  {
      15    int i;
      16    unsigned char udiff = 2;
      17    unsigned char umax = x;
      18    unsigned char umin = x;
      19  
      20    diff = 2;
      21    for (i = 0; i < N; i++) {
      22      ub[i] = i;
      23      uc[i] = i;
      24      if (i%16 == 0)
      25        {
      26  	ub[i] = i+2;
      27  	diff += 2;
      28        }
      29      if (uc[i] > max_result)
      30        max_result = uc[i];
      31      if (uc[i] < min_result)
      32        min_result = uc[i];
      33  
      34      asm volatile ("" ::: "memory");
      35    }
      36    for (i = 0; i < N; i++) {
      37      udiff += (unsigned char) (ub[i] - uc[i]);
      38    }
      39  
      40    for (i = 0; i < N; i++) {
      41      umax = umax < uc[i] ? uc[i] : umax;
      42    }
      43  
      44    for (i = 0; i < N; i++) {
      45      umin = umin > uc[i] ? uc[i] : umin;
      46    }
      47  
      48    /* check results:  */
      49    if (udiff != diff)
      50      abort ();
      51    if (umax != max_result)
      52      abort ();
      53    if (umin != min_result)
      54      abort ();
      55  }
      56  
      57  int main (void)
      58  {
      59    check_vect ();
      60  
      61    main1 (100, 100, 1);
      62    main1 (0, 15, 0);
      63    return 0;
      64  }
      65  
      66  /* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail vect_no_int_min_max } } } */