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Subject: [Bug rtl-optimization/96015] [10/11 Regression] gcc-10.1.0
 miscompiles Python on hppa
Date: Tue, 09 Feb 2021 18:59:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96015

--- Comment #42 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Eric Botcazou
<ebotcazou@gcc.gnu.org>:

https://gcc.gnu.org/g:b1d2ed3ad54378e8798dab27c841418f3f60cff2

commit r10-9354-gb1d2ed3ad54378e8798dab27c841418f3f60cff2
Author: Eric Botcazou <ebotcazou@adacore.com>
Date:   Tue Feb 9 19:49:18 2021 +0100

    Fix miscompilation of Python on HP-PA/Linux

    This is the miscompilation of Python at -O2 on HP-PA/Linux present
    on the mainline and 10 branch, caused by the presence of a call to
    __builtin_unreachable () in the middle of a heavily branchy code,
    which confuses the reorg pass.

    gcc/
            PR rtl-optimization/96015
            * reorg.c (skip_consecutive_labels): Minor comment tweaks.
            (relax_delay_slots): When deleting a jump to the next active
            instruction over a barrier, first delete the barrier if the
            jump is the only way to reach the target label.=