[Bug c/88481] -O1 causes optimizer to drop 'then' clause in conditional

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88481

Alexander Monakov <amonakov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2018-12-13
                 CC|                            |amonakov at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Without -O, optimization passes are not enabled, even if individual -f options
are passed on the command line. If you want to manually find optimizations that
affect the outcome, you need to start with -O1 and add -fno options to
selectively disable optimizations.

The attachment is missing, so changing bug status to "waiting".