gcc/testsuite/gcc.target/i386/20060512-3.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target ilp32 } */
   3 /* { dg-options "-std=gnu99 -msse2 -mstackrealign" } */
   4
   5 #include "sse2-check.h"
   6
   7 #include <emmintrin.h>
   8
   9 __m128i __attribute__ ((__noinline__))
  10 vector_using_function ()
  11 {
  12   volatile __m128i vx;  /* We want to force a vector-aligned store into the stack.  */
  13   vx = _mm_xor_si128 (vx, vx);
  14   return vx;
  15 }
  16 int __attribute__ ((__noinline__))
  17 self_aligning_function (int x, int y)
  18 {
  19   __m128i ignored = vector_using_function ();
  20   return (x + y);
  21 }
  22 int g_1 = 20;
  23 int g_2 = 22;
  24
  25 static void
  26 sse2_test (void)
  27 {
  28   int result;
  29   asm ("pushl %esi");           /* Disalign runtime stack.  */
  30   result = self_aligning_function (g_1, g_2);
  31   asm ("popl %esi");
  32   if (result != 42)
  33     abort ();
  34 }