[Bug tree-optimization/128089] [14/15/16/17 Regression] Wrong code for nested floating-point division in reassoc with -ffast-math -fno-reciprocal-math

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128089

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.3.4
           Priority|P3                          |P2
            Summary|Wrong code for nested       |[14/15/16/17 Regression]
                   |floating-point division in  |Wrong code for nested
                   |reassoc with -ffast-math    |floating-point division in
                   |-fno-reciprocal-math        |reassoc with -ffast-math
                   |                            |-fno-reciprocal-math
   Target Milestone|---                         |14.5

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
The minimal set of options is -O2 -fassociative-math -fno-trapping-math
-fno-signed-zeros