1  /* { dg-do link } */
       2  /* { dg-require-effective-target lto } */
       3  /* { dg-require-linker-plugin "" } */
       4  /* { dg-options "-O1 -flto -fuse-linker-plugin" } */
       5  
       6  #define LABEL3(pfx, x) # pfx x
       7  #define LABEL2(pfx, x) LABEL3(pfx, x)
       8  #define LABEL(x) LABEL2(__USER_LABEL_PREFIX__, x)
       9  
      10  unsigned int factorial_ (unsigned int) __asm__ (LABEL ("factorial"));
      11  
      12  unsigned int factorial (unsigned int i)
      13  {
      14    return i > 1 ? i * factorial_ (i - 1) : 1;
      15  }
      16  
      17  int main (void)
      18  {
      19    return factorial (5);
      20  }