http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56125
Marc Glisse <glisse at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|-O2 -ffast-math generates |[4.7/4.8 Regression] -O2 |bad code when dividing a |-ffast-math generates bad |double by the square of |code when dividing a double |another double. |by the square of another | |double. --- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> 2013-01-28 07:30:05 UTC --- 4.6 generated a very suboptimal call to the libm pow function, but it didn't have the completely wrong result.