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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [testsuite/] [gcc.target/] [i386/] [20020523-1.c] - Rev 20

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/* PR target/6753
   This testcase was miscompiled because sse_mov?fcc_const0*
   patterns were missing earlyclobber.  */
/* { dg-do run { target i?86-*-* x86_64-*-* } } */
/* { dg-skip-if "" { ilp32 } { "-fpic" "-fPIC" } { "" } } */
/* { dg-require-effective-target ilp32 } */
/* { dg-options "-march=pentium3 -msse -ffast-math -O2" } */
 
extern void abort (void);
extern void exit (int);
 
float one = 1.f;
 
void bar (float f)
{
  if (__builtin_memcmp (&one, &f, sizeof (float)))
    abort ();
}
 
float foo (void)
{
  return 1.f;
}
 
typedef struct
{
  float t;
} T;
 
void bail_if_no_sse (void)
{
  int fl1, fl2;
 
  /* See if we can use cpuid.  */
  __asm__ ("pushfl; pushfl; popl %0; movl %0,%1; xorl %2,%0;"
	   "pushl %0; popfl; pushfl; popl %0; popfl"
	   : "=&r" (fl1), "=&r" (fl2)
	   : "i" (0x00200000));
  if (((fl1 ^ fl2) & 0x00200000) == 0)
    exit (0);
 
  /* See if cpuid gives capabilities.  */
  __asm__ ("cpuid" : "=a" (fl1) : "0" (0) : "ebx", "ecx", "edx", "cc");
  if (fl1 == 0)
    exit (0);
 
  /* See if capabilities include SSE (25th bit; 26 for SSE2).  */
  __asm__ ("cpuid" : "=a" (fl1), "=d" (fl2) : "0" (1) : "ebx", "ecx", "cc");
  if ((fl2 & (1 << 25)) == 0)
    exit (0);
}
 
int main (void)
{
  int i;
  T x[1];
 
  bail_if_no_sse ();
  for (i = 0; i < 1; i++)
    {
      x[i].t = foo ();
      x[i].t = 0.f > x[i].t ? 0.f : x[i].t;
      bar (x[i].t);
    }
 
  exit (0);
}
 

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