modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20050316-1.c (about)

     1  /* PR rtl-optimization/16104 */
     2  /* { dg-require-effective-target int32plus } */
     3  /* { dg-options "-Wno-psabi" } */
     4  
     5  extern void abort (void);
     6  
     7  typedef int V2SI __attribute__ ((vector_size (8)));
     8  typedef unsigned int V2USI __attribute__ ((vector_size (8)));
     9  typedef short V2HI __attribute__ ((vector_size (4)));
    10  typedef unsigned int V2UHI __attribute__ ((vector_size (4)));
    11  
    12  int
    13  test1 (void)
    14  {
    15    return (long long) (V2SI) 0LL;
    16  }
    17  
    18  int
    19  test2 (V2SI x)
    20  {
    21    return (long long) x;
    22  }
    23  
    24  V2SI
    25  test3 (void)
    26  {
    27    return (V2SI) (long long) (int) (V2HI) 0;
    28  }
    29  
    30  V2SI
    31  test4 (V2HI x)
    32  {
    33    return (V2SI) (long long) (int) x;
    34  }
    35  
    36  V2SI
    37  test5 (V2USI x)
    38  {
    39    return (V2SI) x;
    40  }
    41  
    42  int
    43  main (void)
    44  {
    45    if (sizeof (short) != 2 || sizeof (int) != 4 || sizeof (long long) != 8)
    46      return 0;
    47  
    48    if (test1 () != 0)
    49      abort ();
    50  
    51    V2SI x = { 2, 2 };
    52    if (test2 (x) != 2)
    53      abort ();
    54  
    55    union { V2SI x; int y[2]; V2USI z; long long l; } u;
    56    u.x = test3 ();
    57    if (u.y[0] != 0 || u.y[1] != 0)
    58      abort ();
    59  
    60    V2HI y = { 4, 4 };
    61    union { V2SI x; long long y; } v;
    62    v.x = test4 (y);
    63    if (v.y != 0x40004)
    64      abort ();
    65  
    66    V2USI z = { 6, 6 };
    67    u.x = test5 (z);
    68    if (u.y[0] != 6 || u.y[1] != 6)
    69      abort ();
    70    return 0;
    71  }