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 volatile int y = 0;
  19 unsigned char check_diff = 2;
  20
  21 void
  22 main1 (unsigned char x, unsigned char max_result, unsigned char min_result, s *arr)
  23 {
  24   int i;
  25   unsigned char udiff = 2;
  26   unsigned char umax = x;
  27   unsigned char umin = x;
  28   unsigned char ua1[N*2];
  29   s *pIn = arr;
  30   s out[N];
  31
  32   for (i = 0; i < N; i++) {
  33     udiff += (unsigned char) (ub[i] - uc[i]);
  34
  35     ua1[2*i+1] = ub[2*i+1];
  36     ua1[2*i] = ub[2*i];
  37
  38     out[i].d = pIn->d - 1;
  39     out[i].b = pIn->b - 4;
  40     out[i].c = pIn->c - 8;
  41     out[i].a = pIn->a - 3;
  42
  43     pIn++;
  44   }
  45
  46   for (i = 0; i < N; i++) {
  47     if (ua1[2*i] != ub[2*i]
  48         || ua1[2*i+1] != ub[2*i+1]
  49         || out[i].a != arr[i].a - 3
  50         || out[i].b != arr[i].b - 4
  51         || out[i].c != arr[i].c - 8
  52         || out[i].d != arr[i].d - 1)
  53       abort ();
  54   }
  55
  56   /* check results:  */
  57   if (udiff != check_diff)
  58     abort ();
  59 }
  60
  61 int main (void)
  62 {
  63   int i;
  64   s arr[N];
  65
  66   check_diff = 2;
  67   ub[0] = uc[0] = 1;
  68   for (i = 1; i < N; i++) {
  69     ub[i] = (i%5 == 0)?i*3:i;
  70     uc[i] = i;
  71     check_diff += (unsigned char) (ub[i] - uc[i]);
  72     if (y) /* Avoid vectorization.  */
  73       abort ();
  74   }
  75   for (; i < 2*N; i++) {
  76     ub[i] = 0;
  77     if (y) /* Avoid vectorization.  */
  78       abort ();
  79   }
  80
  81   for (i = 0; i < N; i++)
  82     {
  83       arr[i].a = i + 9;
  84       arr[i].b = i * 2 + 10;
  85       arr[i].c = 17;
  86       arr[i].d = i+34;
  87       if (arr[i].a == 178)
  88          abort ();
  89     }
  90   check_vect ();
  91
  92   main1 (100, 100, 1, arr);
  93   main1 (0, 15, 0, arr);
  94   return 0;
  95 }
  96
  97 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align && ilp32 } } } } */
  98 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { xfail { vect_no_align && ilp32 } } } } */
  99 /* { dg-final { cleanup-tree-dump "vect" } } */