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 182C53858D29; Sat, 25 May 2024 15:34:51 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 182C53858D29
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1716651291;
	bh=rz9jydEUm/7/o0oLwbfe58k0Z7LxDy2JAMPNhrN9Wao=;
	h=From:To:Subject:Date:From;
	b=Kz+jU7P0040fl/yF02bTXArYaKv62nS+GZgFDN4GcIW3rn6EzX/QLVzkfRDnHrg5b
	 oOb20Umag+Mj2iZOvqrMyqlxTlzsVy4337dYABylr18R5Gz/laUieLbvq5EQ87dBD7
	 svmREcb35BvziVd2e0qvU8mAXIRef70q0ZJTkf3c=
From: "fxue at os dot amperecomputing.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/115228] New: Suspicious code in
 tree-vect-data-refs.cc
Date: Sat, 25 May 2024 15:34:50 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: unknown
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: fxue at os dot amperecomputing.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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-115228-4@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=3D115228

            Bug ID: 115228
           Summary: Suspicious code in tree-vect-data-refs.cc
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: fxue at os dot amperecomputing.com
  Target Milestone: ---

Does the below condition code miss the case of "SAD_EXPR", in function
vect_get_smallest_scalar_type():

  if (assign)
    {
      scalar_type =3D TREE_TYPE (gimple_assign_lhs (assign));
      if (gimple_assign_cast_p (assign)
          || gimple_assign_rhs_code (assign) =3D=3D DOT_PROD_EXPR
          || gimple_assign_rhs_code (assign) =3D=3D WIDEN_SUM_EXPR
          || gimple_assign_rhs_code (assign) =3D=3D WIDEN_MULT_EXPR
          || gimple_assign_rhs_code (assign) =3D=3D WIDEN_LSHIFT_EXPR
          || gimple_assign_rhs_code (assign) =3D=3D FLOAT_EXPR)=