[Bug middle-end/55771] Negation and type conversion incorrectly exchanged

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55771

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c                           |middle-end

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 13:52:36 UTC ---
Ah, indeed - I misremembered a dup that was doing the opposite, converting
-1.0 to unsigned and expecting -1U as result.

It's fold converting (float)(-x) to -(float)x:

float
f1()
{
  unsigned long x = 3;
  return -x;
}