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

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target ia32 } */
   3 /* { dg-require-effective-target sse2 } */
   4 /* { dg-options "-std=gnu99 -msse2 -mstackrealign -mpreferred-stack-boundary=4" } */
   5
   6 #include "sse2-check.h"
   7
   8 #include <emmintrin.h>
   9
  10 __m128i __attribute__ ((__noinline__))
  11 vector_using_function ()
  12 {
  13   volatile __m128i vx;  /* We want to force a vector-aligned store into the stack.  */
  14   vx = _mm_xor_si128 (vx, vx);
  15   return vx;
  16 }
  17 int __attribute__ ((__noinline__))
  18 self_aligning_function (int x, int y)
  19 {
  20   __m128i ignored = vector_using_function ();
  21   return (x + y);
  22 }
  23 int g_1 = 20;
  24 int g_2 = 22;
  25
  26 static void
  27 sse2_test (void)
  28 {
  29   int result;
  30   asm ("pushl %esi");           /* Disalign runtime stack.  */
  31   result = self_aligning_function (g_1, g_2);
  32   if (result != 42)
  33     abort ();
  34   asm ("popl %esi");
  35 }