[Bug target/35045] [4.3 Regression] gcc-4.3 generates wrong code on i386 with -O3

[rguenth at gcc dot gnu dot org]

------- Comment #10 from rguenth at gcc dot gnu dot org  2008-02-01 11:58 
-------
Reduced testcase:

extern __complex__ float clogf (__complex__ float);

__complex__ float
mycacoshf (__complex__ float x)
{
  __complex__ float res;
  res = clogf (x);

  /* We have to use the positive branch.  */
  if (__real__ res < 0.0)
    {
      res = -res; 
      asm ("" : : : "%ecx", "%ebx", "%esi", "%edi");
    }
  return res;
}

-fgcse-after-reload removes the load of the clobbered %edx (it's life
in the other path)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35045