gcc/testsuite/gcc.dg/torture/stackalign/push-1.c

   1 /* PR middle-end/37010 */
   2 /* { dg-do run { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
   3 /* { dg-options "-msse2 -mpreferred-stack-boundary=2" } */
   4
   5 #include <emmintrin.h>
   6 #include "cpuid.h"
   7
   8 typedef __PTRDIFF_TYPE__ ptrdiff_t;
   9 typedef float __m128 __attribute__ ((__vector_size__ (16), __may_alias__));
  10 typedef int aligned __attribute__((aligned(16)));
  11
  12 extern void abort (void);
  13
  14 __m128 r;
  15
  16 int
  17 __attribute__ ((noinline))
  18 check_int (int *i, int align)
  19 {
  20   *i = 20;
  21   if ((((ptrdiff_t) i) & (align - 1)) != 0)
  22     {
  23       abort ();
  24     }
  25   return *i;
  26 }
  27
  28 void
  29 __attribute__ ((noinline))
  30 foo (__m128 x, __m128 y ,__m128 z ,__m128 a, int size)
  31 {
  32   aligned i;
  33
  34   if (size != 5 || check_int (&i, __alignof__(i)) != i)
  35     abort ();
  36
  37   r = a;
  38 }
  39
  40 int
  41 main (void)
  42 {
  43   __m128 x = { 1.0 };
  44   unsigned int eax, ebx, ecx, edx;
  45
  46   if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
  47     return 0;
  48
  49   /* Run SSE2 test only if host has SSE2 support.  */
  50   if (edx & bit_SSE2)
  51     {
  52       foo (x, x, x, x, 5);
  53
  54       if (__builtin_memcmp (&r, &x, sizeof (r)))
  55         abort ();
  56     }
  57
  58   return 0;
  59 }