https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89435

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |7.5
            Summary|wrong code with -O1         |[7/8/9 Regression] wrong
                   |-march=armv4                |code with -O1 -march=armv4
                   |-fno-forward-propagate with |-fno-forward-propagate with
                   |__builtin_sub_overflow()    |__builtin_sub_overflow()

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bisecting now, from skimming of what combiner does r242085 was still ok and
r242439 already not.  But don't have a setup where can I actually run
-march=armv4 code.

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