[Bug ipa/81877] [7/8 Regression] Incorrect results with lto and -fipa-cp and -fipa-cp-clone

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81877

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |6.4.0
           Keywords|                            |wrong-code
   Last reconfirmed|                            |2017-08-17
          Component|fortran                     |ipa
                 CC|                            |marxin at gcc dot gnu.org,
                   |                            |mliska at suse dot cz,
                   |                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|[7 Regression] Incorrect    |[7/8 Regression] Incorrect
                   |results with lto and        |results with lto and
                   |-fipa-cp and -fipa-cp-clone |-fipa-cp and -fipa-cp-clone
   Target Milestone|---                         |7.3
      Known to fail|                            |7.1.0, 8.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  With -O3 -fipa-cp-clone -fipa-cp -flto it works (I think -O3
already enables those).

Fails with -O[12] -fwhole-program -fipa-cp -fipa-cp-clone  (no -flto needed).