[Bug tree-optimization/108582] [12/13 Regression] ICE on valid code at -Os and above with "-fno-tree-ccp -fno-tree-dce": tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in useless_type_conversion_p, at gimple-expr.cc:87

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108582

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>:

https://gcc.gnu.org/g:876b3e0514bc8cb2256c44db56255403bedfa52d

commit r13-5493-g876b3e0514bc8cb2256c44db56255403bedfa52d
Author: Andrew Pinski <apin...@marvell.com>
Date:   Sat Jan 28 18:27:08 2023 +0000

    Fix PR 108582: ICE due to PHI-OPT removing a still in use ssa_name.

    This patch adds a check in match_simplify_replacement to make sure the
middlebb
    does not have any phi-nodes as we don't currently move those.
    This was just a thinko from before.

    Ok? Bootstrapped and tested on x86_64-linux-gnu with no regressions?

            PR tree-optimization/108582

    gcc/ChangeLog:

            * tree-ssa-phiopt.cc (match_simplify_replacement): Add check
            for middlebb to have no phi nodes.

    gcc/testsuite/ChangeLog:

            * gcc.dg/pr108582-1.c: New test.