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 C5C0E3858D33; Sun, 22 Jan 2023 17:14:34 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C5C0E3858D33
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1674407674;
	bh=9ymRgwI2Cx6+yrGpB5tY5Tfs/9Yb0079cCovbdmgq0c=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=PJbyfRJCR1DrndAmE0OhHhVO6PMg7VHA/qkuBZPJdJl2cAAwf7J1yWtOPgsGKs9Ms
	 2/zstSXq8Hj7+NujHYAT0GIffPH+K6R7olCsK/TXEZ2smgeA96Wn1lVEPn8AnE8nof
	 +JGx23SvLm+YTe5kYz93zHf5aF3XbU3qMk+P83yM=
From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/108487] [10/11/12/13 Regression] ~20-30x slowdown in
 populating std::vector from std::ranges::iota_view
Date: Sun, 22 Jan 2023 17:14:34 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 12.2.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: redi at gcc dot gnu.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-108487-4-qIYQIgadbW@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-108487-4@http.gcc.gnu.org/bugzilla/>
References: <bug-108487-4@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=3D108487

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think we just want to dispatch on iterator concept not iterator category.=