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Subject: [Bug middle-end/100278] IBM Z: Segmentation fault when building
 valgrind with -march=z14
Date: Wed, 05 May 2021 09:01:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100278

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:3ac56ea477ec72340ebbce44af93c7712b579109

commit r11-8352-g3ac56ea477ec72340ebbce44af93c7712b579109
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Apr 27 09:41:38 2021 +0200

    tree-optimization/100278 - handle mismatched code in TBAA adjust of PRE

    PRE has code to adjust TBAA behavior for refs that expects the base
    operation code to match.  The testcase shows a case where we have
    a VAR_DECL vs. a MEM_REF so add code to give up in such cases.

    2021-04-27  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/100278
            * tree-ssa-pre.c (compute_avail): Give up when we cannot
            adjust TBAA beacuse of mismatching bases.

            * gcc.dg/tree-ssa/pr100278.c: New testcase.

    (cherry picked from commit acfe5290406cc70485df8899d14982278a9371f8)=