From: Joe Buck <jbuck@synopsys.COM>
To: dann@godzilla.ics.uci.edu (Dan Nicolaescu)
Cc: mark@codesourcery.com (Mark Mitchell),
dan@dberlin.org (Daniel Berlin),
gcc@gcc.gnu.org (gcc@gcc.gnu.org)
Subject: Re: g++ and aliasing bools
Date: Fri, 25 Jan 2002 20:22:00 -0000 [thread overview]
Message-ID: <200201260210.SAA28620@atrus.synopsys.com> (raw)
In-Reply-To: <200201251457.aa26266@gremlin-relay.ics.uci.edu> from "Dan Nicolaescu" at Jan 25, 2002 02:57:16 PM
> I bootstrapped this version on sparc-sun-solaris2.8:
>
> {
> if (AGGREGATE_TYPE_P (t) &&
> !((TREE_CODE (t) == RECORD_TYPE)
> && !CLASSTYPE_NON_POD_P(t)
> && !CLASSTYPE_N_BASECLASSES(t)))
> return 0;
> }
CLASSNAME_NON_POD_P returns false if there are any methods or if there
is a constructor or destructor, right? If so, then I think we're going
to get little gain: much of the payoff from better aliasing in C++ will
come if we don't get false aliasing complaints for things like STL
iterators. At least in my code, I don't have many NON_PODs; even if
it's a plain struct otherwise, I use a constructor to initialize it.
On the other hand, some of the STL iterators are derived classes. Sigh.
next prev parent reply other threads:[~2002-01-26 2:10 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-23 17:56 Dan Nicolaescu
2002-01-23 18:27 ` Daniel Berlin
2002-01-23 18:48 ` Dan Nicolaescu
2002-01-23 19:16 ` Daniel Berlin
2002-01-24 14:15 ` Mark Mitchell
2002-01-24 14:16 ` Daniel Berlin
2002-01-24 14:27 ` Mark Mitchell
2002-01-24 14:35 ` Daniel Berlin
2002-01-24 15:06 ` Mark Mitchell
2002-01-24 15:08 ` Paolo Carlini
2002-01-24 15:18 ` Dan Nicolaescu
2002-01-24 15:36 ` Mark Mitchell
2002-01-25 2:25 ` Daniel Berlin
2002-01-25 15:48 ` Dan Nicolaescu
2002-01-25 20:22 ` Joe Buck [this message]
2002-01-25 23:59 ` Daniel Berlin
2002-01-27 17:04 ` Dan Nicolaescu
2002-01-27 17:59 ` Paolo Carlini
2002-03-04 16:20 ` improving g++ alias analysis (was: Re: g++ and aliasing bools) Dan Nicolaescu
2002-01-24 15:30 g++ and aliasing bools Richard Kenner
2002-01-25 2:16 ` Gabriel Dos Reis
2002-01-25 3:04 ` Paolo Carlini
2002-01-25 4:17 ` Gabriel Dos Reis
2002-01-25 4:35 ` Paolo Carlini
2002-01-25 6:34 ` Daniel Berlin
2002-01-25 7:17 ` Daniel Berlin
2002-01-25 13:57 ` Gabriel Dos Reis
2002-01-25 14:47 ` Tim Hollebeek
2002-01-24 16:09 Richard Kenner
2002-01-25 7:05 Richard Kenner
2002-01-25 8:59 ` Paolo Carlini
2002-01-25 7:23 Richard Kenner
2002-01-25 7:24 ` Daniel Berlin
2002-01-25 7:30 Richard Kenner
2002-01-25 7:33 ` Daniel Berlin
2002-01-25 15:43 ` Daniel Berlin
2002-01-25 7:30 Richard Kenner
2002-01-25 7:38 Robert Dewar
2002-01-25 8:11 ` Daniel Berlin
2002-01-25 14:09 ` Gabriel Dos Reis
2002-01-25 7:51 Robert Dewar
2002-01-25 8:18 ` Daniel Berlin
2002-01-25 8:20 ` Daniel Berlin
2002-01-25 8:28 Robert Dewar
2002-01-25 8:49 ` Daniel Berlin
2002-01-25 8:32 Robert Dewar
2002-01-25 8:53 ` Daniel Berlin
2002-01-25 9:39 ` Joe Buck
2002-01-25 8:33 Richard Kenner
2002-01-25 8:35 Robert Dewar
2002-01-25 8:54 ` Daniel Berlin
2002-01-25 8:55 Robert Dewar
2002-01-25 9:21 ` Daniel Berlin
2002-01-25 10:00 ` Daniel Berlin
2002-01-25 10:54 ` Paolo Carlini
2002-01-25 11:37 ` Daniel Berlin
2002-01-25 11:45 ` David Edelsohn
2002-01-25 11:53 ` Joe Buck
2002-01-25 12:09 ` Mark Mitchell
2002-01-25 12:28 ` Paolo Carlini
2002-01-25 13:49 ` Mark Mitchell
2002-01-25 14:19 ` Joe Buck
2002-01-25 14:21 ` Mark Mitchell
2002-01-25 15:41 ` Neil Booth
2002-01-25 16:04 ` Joe Buck
2002-01-25 17:37 ` Paolo Carlini
2002-01-25 18:10 ` Daniel Berlin
2002-01-27 5:11 ` Mark Mitchell
2002-01-27 5:34 ` Daniel Berlin
2002-01-28 10:39 ` Joe Buck
2002-01-28 10:51 ` Joe Buck
2002-01-28 15:59 ` Mark Mitchell
2002-01-28 17:11 ` Daniel Berlin
2002-01-28 17:28 ` Joe Buck
2002-01-28 18:14 ` Daniel Berlin
2002-01-28 17:18 ` Joe Buck
2002-01-28 18:05 ` Mark Mitchell
2002-01-28 18:50 ` Joe Buck
2002-01-28 19:33 ` Mark Mitchell
2002-01-28 17:40 ` Daniel Berlin
2002-01-28 21:55 ` Daniel Berlin
2002-01-28 22:02 ` Alexandre Oliva
2002-01-28 22:12 ` Mark Mitchell
2002-01-25 13:07 ` Joe Buck
2002-01-25 15:43 ` Daniel Berlin
2002-01-25 16:03 ` Joe Buck
2002-01-25 15:13 ` Daniel Berlin
2002-01-25 12:10 ` Paolo Carlini
2002-01-25 13:16 ` Joe Buck
2002-01-25 15:23 ` Daniel Berlin
2002-01-25 12:05 ` Mark Mitchell
2002-01-25 22:14 ` Daniel Berlin
2002-01-26 3:46 ` Mark Mitchell
2002-01-25 9:13 Robert Dewar
2002-01-25 12:06 mike stump
2002-01-25 12:23 Robert Dewar
2002-01-25 13:29 ` Joe Buck
2002-01-25 14:49 mike stump
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