gcc-4.9/gcc/testsuite/gcc.dg/20031102-1.c


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/* PR optimization/12799 */
/* Origin: Pratap Subrahmanyam <pratap@vmware.com> */

/* { dg-do run } */
/* { dg-options "-O2" } */
/* { dg-options "-O2 -march=i686" { target { { i686-*-* x86_64-*-* } && ia32 } } } */

/* Verify that reload_cse_move2add doesn't add unexpected CLOBBERs. */

extern void abort(void);

int loo = 1;

__inline__ char InlineFunc(void)
{
  return __builtin_expect(!!(loo == 1), 1);
}

int FooBar(void)
{
  int i;
  int var1 = InlineFunc() ? 2046 : 1023;
  int var2 = InlineFunc() ? 512 : 1024;

  for (i = 0; i < var1; i++)
    ;

  if (InlineFunc() && var2 != 512)
    abort();

  return 0;
}

int main(void)
{
  return FooBar();
}