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Subject: [Bug tree-optimization/98786] [8/9/10 Regression] ICE: SSA
 corruption (Unable to coalesce ssa_names 2 and 10 which are marked as MUST
 COALESCE.)
Date: Wed, 05 May 2021 09:42:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98786

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:329f730fd1daa7cdae4a637244d4e215f9bb9a8c

commit r10-9800-g329f730fd1daa7cdae4a637244d4e215f9bb9a8c
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Jan 22 10:34:42 2021 +0100

    tree-optimization/98786 - fix issue with phiopt and abnormals

    This fixes factor_out_conditional_conversion to avoid creating overlapp=
ing
    lifetimes for abnormals.

    2021-01-22  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/98786
            * tree-ssa-phiopt.c (factor_out_conditional_conversion): Avoid
            adding new uses of abnormals.

            * gcc.dg/torture/pr98786.c: New testcase.=