[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;

}