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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/114121] wrong code with _BitInt() arithmetics
 at -O2
Date: Tue, 12 Mar 2024 14:16:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114121

--- Comment #17 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:73dac51b32575f980289c073969c6d825963d076

commit r14-9440-g73dac51b32575f980289c073969c6d825963d076
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Mar 12 14:00:05 2024 +0100

    tree-optimization/114121 - chrec_fold_{plus,multiply} and recursion

    The following addresses endless recursion in the
    chrec_fold_{plus,multiply} functions when handling sign-conversions.
    We only need to apply tricks when we'd fail (there's a chrec in the
    converted operand) and we need to make sure to not turn the other
    operand into something worse (for the chrec-vs-chrec case).

            PR tree-optimization/114121
            * tree-chrec.cc (chrec_fold_plus_1): Guard recursion with
            converted operand properly.
            (chrec_fold_multiply): Likewise.  Handle missed recursion.

            * gcc.dg/torture/pr114312.c: New testcase.=