gcc/testsuite/gcc.dg/torture/pr16104-1.c

   1 /* PR rtl-optimization/16104 */
   2 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   3 /* { dg-options "-msse2" } */
   4 /* { dg-require-effective-target sse2_runtime } */
   5
   6 extern void abort (void);
   7
   8 typedef int V2SI __attribute__ ((vector_size (8)));
   9 typedef unsigned int V2USI __attribute__ ((vector_size (8)));
  10 typedef short V2HI __attribute__ ((vector_size (4)));
  11 typedef unsigned int V2UHI __attribute__ ((vector_size (4)));
  12
  13 int
  14 test1 (void)
  15 {
  16   return (long long) (V2SI) 0LL;
  17 }
  18
  19 int
  20 test2 (V2SI x)
  21 {
  22   return (long long) x;
  23 }
  24
  25 V2SI
  26 test3 (void)
  27 {
  28   return (V2SI) (long long) (int) (V2HI) 0;
  29 }
  30
  31 V2SI
  32 test4 (V2HI x)
  33 {
  34   return (V2SI) (long long) (int) x;
  35 }
  36
  37 V2SI
  38 test5 (V2USI x)
  39 {
  40   return (V2SI) x;
  41 }
  42
  43 void
  44 __attribute__ ((noinline))
  45 do_test (void)
  46 {
  47   if (sizeof (short) != 2 || sizeof (int) != 4 || sizeof (long long) != 8)
  48     return;
  49
  50   if (test1 () != 0)
  51     abort ();
  52
  53   V2SI x = { 2, 2 };
  54   if (test2 (x) != 2)
  55     abort ();
  56
  57   union { V2SI x; int y[2]; V2USI z; long long l; } u;
  58   u.x = test3 ();
  59   if (u.y[0] != 0 || u.y[1] != 0)
  60     abort ();
  61
  62   V2HI y = { 4, 4 };
  63   union { V2SI x; long long y; } v;
  64   v.x = test4 (y);
  65   if (v.y != 0x40004)
  66     abort ();
  67
  68   V2USI z = { 6, 6 };
  69   u.x = test5 (z);
  70   if (u.y[0] != 6 || u.y[1] != 6)
  71     abort ();
  72 }
  73
  74 int
  75 main (void)
  76 {
  77   do_test ();
  78   return 0;
  79 }