[tree-ssa] Dce & infinite loops

[Zdenek Dvorak]

Hello,

I may be wrong, but IIRC it is incorrect to remove infinite loops, as
happens currently for example for the following code:

int main(void)
{
  unsigned i;

  for (i = 1; i != 0; i+=2);

  return 0;
}

Zdenek