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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/95854] ICE in find_bswap_or_nop_1 of pass
 store-merging
Date: Mon, 29 Jun 2020 10:58:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95854

--- Comment #2 from CVS 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:35cf3c55165efe8226cb9e5397ab0620130396ea

commit r11-1704-g35cf3c55165efe8226cb9e5397ab0620130396ea
Author: Kaipeng Zhou <zhoukaipeng3@huawei.com>
Date:   Wed Jun 24 22:48:45 2020 +0800

    store-merging: ICE in find_bswap_or_nop_1 PR95854.

    The patch add a judgement in find_bswap_or_nop_1 to make sure both
    operand1 and operand2 cannot be converted to unsigned HOST_WIDE_INT.
    If not, return NULL.

    gcc/ChangeLog:

    2020-06-24  Kaipeng Zhou  <zhoukaipeng3@huawei.com>

            PR tree-optimization/95854
            * gimple-ssa-store-merging.c (find_bswap_or_nop_1): Return NULL
            if operand 1 or 2 of a BIT_FIELD_REF cannot be converted to
            unsigned HOST_WIDE_INT.

    gcc/testsuite/ChangeLog:

    2020-06-24  Kaipeng Zhou  <zhoukaipeng3@huawei.com>

            PR tree-optimization/95854
            * gcc.dg/pr95854.c: New test.=