gcc/testsuite/gcc.dg/vect/slp-24-big-array.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 64
   7
   8 typedef struct {
   9    unsigned char a;
  10    unsigned char b;
  11    unsigned char c;
  12    unsigned char d;
  13 } s;
  14
  15 unsigned char ub[N*2];
  16 unsigned char uc[N];
  17
  18 unsigned char check_diff = 2;
  19
  20 void
  21 main1 (unsigned char x, unsigned char max_result, unsigned char min_result, s *arr)
  22 {
  23   int i;
  24   unsigned char udiff = 2;
  25   unsigned char umax = x;
  26   unsigned char umin = x;
  27   unsigned char ua1[N*2];
  28   s *pIn = arr;
  29   s out[N];
  30
  31   for (i = 0; i < N; i++) {
  32     udiff += (unsigned char) (ub[i] - uc[i]);
  33
  34     ua1[2*i+1] = ub[2*i+1];
  35     ua1[2*i] = ub[2*i];
  36
  37     out[i].d = pIn->d - 1;
  38     out[i].b = pIn->b - 4;
  39     out[i].c = pIn->c - 8;
  40     out[i].a = pIn->a - 3;
  41
  42     pIn++;
  43   }
  44
  45   for (i = 0; i < N; i++) {
  46     if (ua1[2*i] != ub[2*i]
  47         || ua1[2*i+1] != ub[2*i+1]
  48         || out[i].a != arr[i].a - 3
  49         || out[i].b != arr[i].b - 4
  50         || out[i].c != arr[i].c - 8
  51         || out[i].d != arr[i].d - 1)
  52       abort ();
  53   }
  54
  55   /* check results:  */
  56   if (udiff != check_diff)
  57     abort ();
  58 }
  59
  60 int main (void)
  61 {
  62   int i;
  63   s arr[N];
  64
  65   check_diff = 2;
  66   ub[0] = uc[0] = 1;
  67   for (i = 1; i < N; i++) {
  68     ub[i] = (i%5 == 0)?i*3:i;
  69     uc[i] = i;
  70     check_diff += (unsigned char) (ub[i] - uc[i]);
  71     asm volatile ("" ::: "memory");
  72   }
  73   for (; i < 2*N; i++) {
  74     ub[i] = 0;
  75     asm volatile ("" ::: "memory");
  76   }
  77
  78   for (i = 0; i < N; i++)
  79     {
  80       arr[i].a = i + 9;
  81       arr[i].b = i * 2 + 10;
  82       arr[i].c = 17;
  83       arr[i].d = i+34;
  84       asm volatile ("" ::: "memory");
  85     }
  86   check_vect ();
  87
  88   main1 (100, 100, 1, arr);
  89   main1 (0, 15, 0, arr);
  90   return 0;
  91 }
  92
  93 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align && ilp32 } } } } */
  94 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { xfail { vect_no_align && ilp32 } } } } */