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Re: Switching to C++ by default in 4.8

From: Jakub Jelinek <jakub at redhat dot com>
To: Lawrence Crowl <crowl at google dot com>
Cc: Jakub Jelinek <jakub at redhat dot com>, Richard Guenther <richard dot guenther at gmail dot com>, Bernd Schmidt <bernds at codesourcery dot com>, Gabriel Dos Reis <gdr at integrable-solutions dot net>, David Edelsohn <dje dot gcc at gmail dot com>, Diego Novillo <dnovillo at google dot com>, gcc <gcc at gcc dot gnu dot org>
Date: Mon, 9 Apr 2012 20:54:18 +0200
Subject: Re: Switching to C++ by default in 4.8
References: <CAFiYyc0wG3ha4B4BgA6g4NPnBG6Pj3iuMZ+_B+3AOgBkKvXpLg@mail.gmail.com> <4F7C35A3.3080207@codesourcery.com> <CAFiYyc0knheu7jRBUd5Vtva5Bj7GBypzCQ9BFmFYGXzLcFBYGA@mail.gmail.com> <CAGqM8fbBjW5e47weXBVT9O=_TcV3jTBTu9sfmnbetHyAUH6smw@mail.gmail.com> <CAFiYyc2XU5TL1g7_vNdJZm+TuAHF6x+uaS2hE4P-vqoJEgGwfw@mail.gmail.com> <CAGqM8faM7e3YBQfDR7jvo9mv_bGCZWNjR4j6r80wq8pEhd4FJA@mail.gmail.com> <CAFiYyc2XK2fH01=JSXEWnLL0=8Pq34k5urAfRvPBeMKDADWmpw@mail.gmail.com> <CAGqM8fYPkZ3c1R+4dPhQetdoWEpxaXYutJw_kQ3C-L6aTL7HZQ@mail.gmail.com> <20120409182200.GI6148@sunsite.ms.mff.cuni.cz> <CAGqM8fakdBBm9Dh3qB3YcRpuq0T8vvVrFvpM-tk=zbsRbxmw8w@mail.gmail.com>
Reply-to: Jakub Jelinek <jakub at redhat dot com>

On Mon, Apr 09, 2012 at 11:51:56AM -0700, Lawrence Crowl wrote:
> On 4/9/12, Jakub Jelinek <jakub@redhat.com> wrote:
> > On Mon, Apr 09, 2012 at 10:55:46AM -0700, Lawrence Crowl wrote:
> > > A build conversion to C++ is a precondition to any source change
> > > using C++, though the two could be bundled into one patch.  In any
> > > event, I agree that the conversion needs to provide value. Vectors
> > > and hash tables are a good early target.
> >
> > Hash tables?  Ugh, what is wrong with the hash tables we have
> > right now in GCC?
> 
> Lots of boiler plate involving casting to void*.  Some of that
> boiler plate makes the optimizer less effective.

Have you any numbers that back that up?

	Jakub

Follow-Ups:
- Re: Switching to C++ by default in 4.8
  - From: Lawrence Crowl

References:
- Re: Switching to C++ by default in 4.8
  - From: Richard Guenther
- Re: Switching to C++ by default in 4.8
  - From: Bernd Schmidt
- Re: Switching to C++ by default in 4.8
  - From: Richard Guenther
- Re: Switching to C++ by default in 4.8
  - From: Lawrence Crowl
- Re: Switching to C++ by default in 4.8
  - From: Richard Guenther
- Re: Switching to C++ by default in 4.8
  - From: Lawrence Crowl
- Re: Switching to C++ by default in 4.8
  - From: Richard Guenther
- Re: Switching to C++ by default in 4.8
  - From: Lawrence Crowl
- Re: Switching to C++ by default in 4.8
  - From: Jakub Jelinek
- Re: Switching to C++ by default in 4.8
  - From: Lawrence Crowl

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