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Subject: [Bug target/100549] [12 Regression] ICE: Segmentation fault with
 __builtin_ia32_pcmpgtw128 since r12-110-gc54a9f7259fce1a2
Date: Mon, 17 May 2021 12:04:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100549

--- Comment #4 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:45063c0506a00f2673049d46f12a6061dca4692f

commit r12-833-g45063c0506a00f2673049d46f12a6061dca4692f
Author: liuhongt <hongtao.liu@intel.com>
Date:   Thu May 13 13:08:16 2021 +0800

    Fix ICE [PR target/100549]

    When arg0 is same as arg1 in __builtin_ia32_pcmpgtw,
    gimple_build (&stmts, GT_EXPR, cmp_type, arg0, arg1) will simplify the
    comparison to vector constant 0, no stmts is generated, which causes
    ICE in gsi_insert_before (gsi, stmts, GSI_SAME_STMT). So use
    gsi_insert_seq_before instead which will handle NULL seq.

    gcc/ChangeLog:

            PR target/100549
            * config/i386/i386.c (ix86_gimple_fold_builtin): Use
            gsi_insert_seq_before instead.

    gcc/testsuite/ChangeLog:

            PR target/100549
            * gcc.target/i386/pr100549.c: New test.=