1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -ffast-math -fno-tree-forwprop -fno-tree-reassoc" } */
       3  /* { dg-options "-O2 -ffast-math -fno-tree-forwprop -fno-tree-reassoc -mfma4" { target x86_64-*-* i?86-*-* } } */
       4  
       5  float
       6  foo (float x, float cim)
       7  {
       8    float c = x * cim;
       9    float d = -c;
      10    return c - d;
      11  }