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From: "chengcongxiu at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/95668] New: patching the commit of SVE on GCC7.3, But fail in
 test
Date: Sun, 14 Jun 2020 07:18:40 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95668

            Bug ID: 95668
           Summary: patching the commit of SVE on GCC7.3, But fail in test
           Product: gcc
           Version: 7.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: chengcongxiu at huawei dot com
  Target Milestone: ---

Created attachment 48727
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D48727&action=3Dedit
The gcc as follow:

The test as follow:

void foo (int *  restrict in, int * restrict out, int s)
{
    for (int i =3D 0; i < 16; i++) {
      for (int j =3D 0; j < 6; ++j)
        out[j] =3D in[j];
      in +=3D 6;
      out +=3D s*6;
     }
}

using gcc compile above test:

        .cfi_startproc
        movi    v5.2s, 0
        add     w2, w2, w2, lsl 1
        ldr     q16, [x0]
        lsl     w2, w2, 1
        ldr     q7, [x0, 16]
        sbfiz   x2, x2, 2, 32
        orr     v4.8b, v5.8b, v5.8b=20=20=20=20=20
        orr     v3.8b, v5.8b, v5.8b
        orr     v2.8b, v5.8b, v5.8b
        orr     v1.8b, v5.8b, v5.8b
        ldr     q6, [x0, 32]
        orr     v0.8b, v5.8b, v5.8b
        orr     v25.8b, v5.8b, v5.8b
        orr     v24.8b, v5.8b, v5.8b
        ins     v4.s[60], v16.s[61]      //this instruction error:
        ins     v5.s[60], v16.s[63]
        ins     v3.s[60], v7.s[63]
        ins     v2.s[60], v7.s[61]
        ins     v1.s[60], v6.s[63]
        add     x5, x1, x2=