gcc/testsuite/gcc.dg/vect/vect-strided-u16-i3.c

   1 #include <stdarg.h>
   2 #include "tree-vect.h"
   3
   4 #define N 128
   5
   6 typedef struct {
   7    unsigned short a;
   8    unsigned short b;
   9    unsigned short c;
  10 } s;
  11
  12 #define A(I) (I)
  13 #define B(I) ((I) * 2)
  14 #define C(I) ((unsigned short) ~((I) ^ 0x18))
  15
  16 void __attribute__ ((noinline))
  17 check1 (s *res)
  18 {
  19   int i;
  20
  21   for (i = 0; i < N; i++)
  22     if (res[i].a != C (i)
  23         || res[i].b != A (i)
  24         || res[i].c != B (i))
  25       abort ();
  26 }
  27
  28 void __attribute__ ((noinline))
  29 check2 (unsigned short *res)
  30 {
  31   int i;
  32
  33   for (i = 0; i < N; i++)
  34     if (res[i] != (unsigned short) (A (i) + B (i) + C (i)))
  35       abort ();
  36 }
  37
  38 void __attribute__ ((noinline))
  39 check3 (s *res)
  40 {
  41   int i;
  42
  43   for (i = 0; i < N; i++)
  44     if (res[i].a != i
  45         || res[i].b != i
  46         || res[i].c != i)
  47       abort ();
  48 }
  49
  50 void __attribute__ ((noinline))
  51 check4 (unsigned short *res)
  52 {
  53   int i;
  54
  55   for (i = 0; i < N; i++)
  56     if (res[i] != (unsigned short) (A (i) + B (i)))
  57       abort ();
  58 }
  59
  60 void __attribute__ ((noinline))
  61 main1 (s *arr)
  62 {
  63   int i;
  64   s *ptr = arr;
  65   s res1[N];
  66   unsigned short res2[N];
  67
  68   for (i = 0; i < N; i++)
  69     {
  70       res1[i].a = arr[i].c;
  71       res1[i].b = arr[i].a;
  72       res1[i].c = arr[i].b;
  73     }
  74   check1 (res1);
  75
  76   for (i = 0; i < N; i++)
  77     res2[i] = arr[i].a + arr[i].b + arr[i].c;
  78   check2 (res2);
  79
  80   for (i = 0; i < N; i++)
  81     {
  82       res1[i].a = i;
  83       res1[i].b = i;
  84       res1[i].c = i;
  85     }
  86   check3 (res1);
  87
  88   for (i = 0; i < N; i++)
  89     res2[i] = arr[i].a + arr[i].b;
  90   check4 (res2);
  91 }
  92
  93 int main (void)
  94 {
  95   int i;
  96   s arr[N];
  97
  98   check_vect ();
  99
 100   for (i = 0; i < N; i++)
 101     {
 102       arr[i].a = A (i);
 103       arr[i].b = B (i);
 104       arr[i].c = C (i);
 105     }
 106   main1 (arr);
 107
 108   return 0;
 109 }
 110
 111 /* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect"  { target vect_strided3 } } } */