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
   5 #include "cpuid.h"
   6
   7 extern void abort (void);
   8
   9 typedef int V2SI __attribute__ ((vector_size (8)));
  10 typedef unsigned int V2USI __attribute__ ((vector_size (8)));
  11 typedef short V2HI __attribute__ ((vector_size (4)));
  12 typedef unsigned int V2UHI __attribute__ ((vector_size (4)));
  13
  14 int
  15 test1 (void)
  16 {
  17   return (long long) (V2SI) 0LL;
  18 }
  19
  20 int
  21 test2 (V2SI x)
  22 {
  23   return (long long) x;
  24 }
  25
  26 V2SI
  27 test3 (void)
  28 {
  29   return (V2SI) (long long) (int) (V2HI) 0;
  30 }
  31
  32 V2SI
  33 test4 (V2HI x)
  34 {
  35   return (V2SI) (long long) (int) x;
  36 }
  37
  38 V2SI
  39 test5 (V2USI x)
  40 {
  41   return (V2SI) x;
  42 }
  43
  44 void
  45 __attribute__ ((noinline))
  46 do_test (void)
  47 {
  48   if (sizeof (short) != 2 || sizeof (int) != 4 || sizeof (long long) != 8)
  49     return;
  50
  51   if (test1 () != 0)
  52     abort ();
  53
  54   V2SI x = { 2, 2 };
  55   if (test2 (x) != 2)
  56     abort ();
  57
  58   union { V2SI x; int y[2]; V2USI z; long long l; } u;
  59   u.x = test3 ();
  60   if (u.y[0] != 0 || u.y[1] != 0)
  61     abort ();
  62
  63   V2HI y = { 4, 4 };
  64   union { V2SI x; long long y; } v;
  65   v.x = test4 (y);
  66   if (v.y != 0x40004)
  67     abort ();
  68
  69   V2USI z = { 6, 6 };
  70   u.x = test5 (z);
  71   if (u.y[0] != 6 || u.y[1] != 6)
  72     abort ();
  73 }
  74
  75 int
  76 main (void)
  77 {
  78   unsigned int eax, ebx, ecx, edx;
  79
  80   if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
  81     return 0;
  82
  83   /* Run SSE2 test only if host has SSE2 support.  */
  84   if (edx & bit_SSE2)
  85     do_test ();
  86
  87   return 0;
  88 }