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 00A723858CDB; Thu, 18 May 2023 14:08:34 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 00A723858CDB
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1684418914;
	bh=tdmKCKlEsoFtwtv3lzrUcyTBcvlGPuVaz71nsz8MTT0=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=XYmgniCF/na+oAvvvatw1JlbT9QrvkBLaGl27QjKs4Ui0na9pEgD7pA4wXtA6zgYI
	 8G5ByPa8buiQD9Cz0ilYDj7EdgtWPs3UveUQWXkPK8qhauvTI1LaGt7bcfYkH9VKm2
	 h7DuSkJWTczOHLuXN4seXRHjVkGGeBZ6/KH9Wqlw=
From: "thiago at kde dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109896] Missed optimisation: overflow detection in
 multiplication instructions for operator new
Date: Thu, 18 May 2023 14:08:33 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 13.1.1
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: thiago at kde dot org
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: 
Message-ID: <bug-109896-4-4J6tiZ9jrc@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109896-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109896-4@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=3D109896

--- Comment #7 from Thiago Macieira <thiago at kde dot org> ---
(In reply to Jonathan Wakely from comment #6)
> With placement-new there's no allocation:
> https://gcc.godbolt.org/z/68e4PaeYz

Is the exception expected there, though?=