gcc/testsuite/gcc.target/i386/stack-realign-win.c

   1 /* { dg-do compile { target *-*-mingw* *-*-cygwin* } } */
   2 /* { dg-require-effective-target ia32 } */
   3 /* { dg-options "-msse -O" } */
   4
   5 extern void abort (void);
   6
   7 typedef float __m128 __attribute__ ((__vector_size__ (16), __may_alias__));
   8
   9 static __m128
  10 load_m128 (float *e)
  11 {
  12   return * (__m128 *) e;
  13 }
  14
  15 typedef union
  16 {
  17   __m128  x;
  18   float a[4];
  19 } union128;
  20
  21 void test (void)
  22 {
  23   union128 u;
  24   float e[4] __attribute__ ((aligned (16)))
  25     = {2134.3343, 1234.635654, 1.2234, 876.8976};
  26   int i;
  27
  28   u.x = load_m128 (e);
  29
  30   for (i = 0; i < 4; i++)
  31     if (u.a[i] != e[i])
  32       abort ();
  33 }
  34
  35 /* { dg-final { scan-assembler "andl\\t\\$-16, %esp" } } */