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From: "Giovanni Bajo" <giovannibajo@libero.it>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: Re: c++/8826: "a >> b" differs from "a.operator>>(b)" in that virtual function calls are not avoided
Date: Fri, 02 May 2003 12:06:00 -0000	[thread overview]
Message-ID: <20030502120601.21621.qmail@sources.redhat.com> (raw)

The following reply was made to PR c++/8826; it has been noted by GNATS.

From: "Giovanni Bajo" <giovannibajo@libero.it>
To: <gcc-gnats@gcc.gnu.org>,
	<gcc-bugs@gcc.gnu.org>,
	<nobody@gcc.gnu.org>,
	<gcc-prs@gcc.gnu.org>,
	<niemayer@isg.de>
Cc:  
Subject: Re: c++/8826: "a >> b" differs from "a.operator>>(b)" in that virtual function calls are not avoided
Date: Fri, 2 May 2003 13:56:18 +0200

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8826
 
 Reconfirmed with everything up to current mainline (20030430). I agree this
 is a serious performance pessimization and it should be handled as soon as
 possible.
 I don't think there are any correctness problem though, since the compiler
 knows that a is exactly of type A (it's not a reference or a pointer), so
 it's always ok to inline the method, even without specifying
 a.A::operator>>() explitally.
 
 Giovanni Bajo
 


             reply	other threads:[~2003-05-02 12:06 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-02 12:06 Giovanni Bajo [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-12-05 11:34 bangerth
2002-12-05 10:56 niemayer

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