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From: Andrew Pinski <pinskia@gmail.com>
To: Michael Matz <matz@suse.de>
Cc: Diego Novillo <dnovillo@google.com>,
	Lawrence Crowl <crowl@googlers.com>,
		"gcc@gcc.gnu.org" <gcc@gcc.gnu.org>
Subject: Re: Simplifying Gimple Generation
Date: Fri, 16 Nov 2012 17:31:00 -0000	[thread overview]
Message-ID: <CA+=Sn1khtkyja9Nbr31WQ6f5-vC4FNRiAp4AvDRaJqT=agTeUg@mail.gmail.com> (raw)
In-Reply-To: <alpine.LNX.2.00.1211161529030.21868@wotan.suse.de>

On Fri, Nov 16, 2012 at 6:30 AM, Michael Matz <matz@suse.de> wrote:
> Hi,
>
> On Fri, 16 Nov 2012, Diego Novillo wrote:
>
>> > I think consistency should trump brevity here, so also add a tree code for
>> > the converter, i.e.
>> >   ssa_stmt b = q.stmt (NOP_EXPR, shadow_type, a);
>>
>> Ah, yes.  This one was amusing.  When we were drafting the proposal,
>> Lawrence kept wondering what this NOP_EXPR thing is.  I've been
>> suffering this name for so long, that it no longer irritates me.  Had
>> it been named CAST_EXPR, or even NOP_CAST_EXPR, he would have probably
>> kept it in the example code :)
>
> We have CONVERT_EXPR, but it currently doesn't do _quite_ the same as
> NOP_EXPR.  I once wanted to merge them (with CONVERT_EXPR surviving), but
> it stalled somewhere, couple years ago.

I think the only difference now is in the front-ends IIRC.  Everything
else has been merged with respect to CONVERT_EXPR and NOP_EXPR.  So we
should recommend using CONVERT_EXPR in new code.

Thanks,
Andrew Pinski

  reply	other threads:[~2012-11-16 17:31 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-15  1:13 Lawrence Crowl
2012-11-15  6:06 ` Basile Starynkevitch
2012-11-15 19:34   ` Lawrence Crowl
2012-11-16 13:15   ` Diego Novillo
2012-11-15  7:32 ` Xinliang David Li
2012-11-16 13:13   ` Diego Novillo
2012-11-17  1:05     ` Xinliang David Li
2012-11-15 14:48 ` Michael Matz
2012-11-15 16:52   ` Gabriel Dos Reis
2012-11-15 17:01     ` Michael Matz
2012-11-15 17:07       ` Xinliang David Li
2012-11-15 19:59   ` Lawrence Crowl
2012-11-16 12:44     ` Michael Matz
2012-11-16 13:59   ` Diego Novillo
2012-11-16 14:30     ` Michael Matz
2012-11-16 17:31       ` Andrew Pinski [this message]
2012-11-20 16:49 ` Andrew MacLeod
2012-11-25  1:35 ` Diego Novillo

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