[Bug target/70465] [4.9/5/6/7 Regression] Poor code for x87 asm

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70465

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Target|                            |i?86-*-*
   Target Milestone|6.0                         |7.0
            Summary|[4.9/5/6 Regression]  Poor  |[4.9/5/6/7 Regression]
                   |code for x87 asm            |Poor code for x87 asm

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Whatever we do, please defer to GCC 7.  (who cares about x87 math these days?)

I wonder why __builtin_atan2 doesn't expand to fpatan with fancy-math-387 and
-ffast-math.