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Subject: [Bug testsuite/102944] Many gcc.dg/Wstringop-overflow-*.c failures
Date: Tue, 02 Nov 2021 08:41:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102944

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:2e560abff4294639a0fcf666994c30fb2f00a324

commit r12-4839-g2e560abff4294639a0fcf666994c30fb2f00a324
Author: liuhongt <hongtao.liu@intel.com>
Date:   Thu Oct 28 14:28:29 2021 +0800

    Adjust testcase for O2 vect.

    Adjust code in check_vect_slp_store_usage to make it an exact
    pattern match of the corresponding testcases.
    These new target/xfail selectors are added as a temporary solution,
    and should be removed after real issue is fixed for Wstringop-overflow.

    gcc/ChangeLog:

            * doc/sourcebuild.texi (vect_slp_v4qi_store_unalign,
            vect_slp_v2hi_store_unalign, vect_slp_v4hi_store_unalign,
            vect_slp_v4si_store_unalign): Document efficient target.
            (vect_slp_v4qi_store_unalign_1, vect_slp_v8qi_store_unalign_1,
            vect_slp_v16qi_store_unalign_1): Ditto.
            (vect_slp_v2hi_store_align,vect_slp_v2qi_store_align,
            vect_slp_v2si_store_align, vect_slp_v4qi_store_align): Ditto.
            (struct_4char_block_move, struct_8char_block_move,
            struct_16char_block_move): Ditto.

    gcc/testsuite/ChangeLog:

            PR testsuite/102944
            * c-c++-common/Wstringop-overflow-2.c: Adjust target/xfail
            selector.
            * gcc.dg/Warray-bounds-48.c: Ditto.
            * gcc.dg/Warray-bounds-51.c: Ditto.
            * gcc.dg/Warray-parameter-3.c: Ditto.
            * gcc.dg/Wstringop-overflow-14.c: Ditto.
            * gcc.dg/Wstringop-overflow-21.c: Ditto.
            * gcc.dg/Wstringop-overflow-68.c: Ditto
            * gcc.dg/Wstringop-overflow-76.c: Ditto
            * gcc.dg/Wzero-length-array-bounds-2.c: Ditto.
            * lib/target-supports.exp (vect_slp_v4qi_store_unalign): New
            efficient target.
            (vect_slp_v4qi_store_unalign_1): Ditto.
            (struct_4char_block_move): Ditto.
            (struct_8char_block_move): Ditto.
            (stryct_16char_block_move): Ditto.
            (vect_slp_v2hi_store_align): Ditto.
            (vect_slp_v2qi_store): Rename to ..
            (vect_slp_v2qi_store_align): .. this.
            (vect_slp_v4qi_store): Rename to ..
            (vect_slp_v4qi_store_align): .. This.
            (vect_slp_v8qi_store): Rename to ..
            (vect_slp_v8qi_store_unalign_1): .. This.
            (vect_slp_v16qi_store): Rename to ..
            (vect_slp_v16qi_store_unalign_1): .. This.
            (vect_slp_v2hi_store): Rename to ..
            (vect_slp_v2hi_store_unalign): .. This.
            (vect_slp_v4hi_store): Rename to ..
            (vect_slp_v4hi_store_unalign): This.
            (vect_slp_v2si_store): Rename to ..
            (vect_slp_v2si_store_align): .. This.
            (vect_slp_v4si_store): Rename to ..
            (vect_slp_v4si_store_unalign): Ditto.
            (check_vect_slp_aligned_store_usage): Rename to ..
            (check_vect_slp_store_usage): .. this and adjust code to make
            it an exact pattern match of corresponding testcase.=