From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 4EE703858D39; Wed, 31 Aug 2022 16:58:08 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4EE703858D39
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1661965088;
	bh=E3xILOWEAr13aEo/dpIhoso4MTUjbip+I2UGd6jDEzo=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=NKwm7Hw6Pmfoi5RfCCGtWslF8jz7Ff7yXM7LBiVTxKyavE0cY6agJdRW++S6+6rm4
	 iVsOyAH8GhszLeg5NGDhXgIug8gBypWchPDlnKzPg+s5ZgGNS1OBfDNboJd7dDcR9h
	 1mWPEUu7IUpqB94iQAYuOajH0OmjzZ/w6eyOklV0=
From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106794] [13 Regression] ice in
 vect_transform_slp_perm_load_1
Date: Wed, 31 Aug 2022 16:58:08 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: dcb314 at hotmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 13.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-106794-4-Z1TJnzWhME@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-106794-4@http.gcc.gnu.org/bugzilla/>
References: <bug-106794-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106794

--- Comment #2 from David Binderman <dcb314 at hotmail dot com> ---
Reduced code seems to be:

template <class T> struct Vector3 {
  Vector3();
  Vector3(T, T, T);
  T length() const;
  T x, y, z;
};
template <class T>
Vector3<T>::Vector3(T _x, T _y, T _z) : x(_x), y(_y), z(_z) {}
Vector3<float> cross(Vector3<float> a, Vector3<float> b) {
  return Vector3<float>(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z,
                        a.x * b.y - a.y * b.x);
}
template <class T> T Vector3<T>::length() const { return z; }
int generateNormals_i;
float generateNormals_p2_0, generateNormals_p0_0;
struct SphereMesh {
  void generateNormals();
  float vertices;
};
void SphereMesh::generateNormals() {
  Vector3<float> *faceNormals =3D new Vector3<float>;
  for (int j; j; j++) {
    float *p0 =3D &vertices + 3, *p1 =3D &vertices + j * 3, *p2 =3D &vertic=
es + 3,
          *p3 =3D &vertices + generateNormals_i + j * 3;
    Vector3<float> v0(p1[0] - generateNormals_p0_0, p1[1] - 1, p1[2] - 2),
        v1(0, 1, 2);
    if (v0.length())
      v1 =3D Vector3<float>(p3[0] - generateNormals_p2_0, p3[1] - p2[1],
                          p3[2] - p2[2]);
    else
      v1 =3D Vector3<float>(generateNormals_p0_0 - p3[0], p0[1] - p3[1],
                          p0[2] - p3[2]);
    Vector3<float> faceNormal =3D cross(v0, v1);
    faceNormals[j] =3D faceNormal;
  }
}

Flags -c -O3 -ffast-math -march=3Dbdver2 required.=