[Bug tree-optimization/80293] [6/7 Regression] unnecessary code at -O2 (-O1 is fine)

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80293

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://gcc.gnu.org/ml/gcc-
                   |                            |patches/2017-04/msg00639.ht
                   |                            |ml
            Summary|[6/7/8 Regression]          |[6/7 Regression]
                   |unnecessary code at -O2     |unnecessary code at -O2
                   |(-O1 is fine)               |(-O1 is fine)

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Fixed on trunk so far.  Also ACKed to back-port to the gcc-7-branch after 7.1
is released.  Not sure about the 6 branch.