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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/94717] [10 Regression] segfault with -O2
 -fnon-call-exceptions -ftracer
Date: Thu, 23 Apr 2020 20:28:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94717

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Eric Botcazou <ebotcazou@gcc.gnu.org>:

https://gcc.gnu.org/g:cb76fcd7fb4a4f1e4d1688deca87969124f16fef

commit r10-7926-gcb76fcd7fb4a4f1e4d1688deca87969124f16fef
Author: Eric Botcazou <ebotcazou@gcc.gnu.org>
Date:   Thu Apr 23 22:25:04 2020 +0200

    Fix segfault with -O2 -fnon-call-exceptions -ftracer

    The GIMPLE SSA store merging pass blows up when it is rewriting the
    stores because it didn't realize that they don't belong to the same
    EH region.  Fixed by refusing to merge them.

            PR tree-optimization/94717
            * gimple-ssa-store-merging.c (try_coalesce_bswap): Return false=
 if
            one of the stores doesn't have the same landing pad number as t=
he
            first.
            (coalesce_immediate_stores): Do not try to coalesce the store u=
sing
            bswap if it doesn't have the same landing pad number as the fir=
st.=