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From: Dibyendu Majumdar <mobile@majumdar.org.uk>
To: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Linux-Sparse <linux-sparse@vger.kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Christopher Li <sparse@chrisli.org>
Subject: Re: [PATCH 1/4] add support for a new flag: -fdump-linearize[=only]
Date: Fri, 7 Apr 2017 01:32:04 +0100	[thread overview]
Message-ID: <CACXZuxddGHr6xx7KC93Lw-bVoexwmuFQwuE2qsQ3yO6bGBehXg@mail.gmail.com> (raw)
In-Reply-To: <20170406230029.11384-2-luc.vanoostenryck@gmail.com>

Hi Luc,

On 7 April 2017 at 00:00, Luc Van Oostenryck
<luc.vanoostenryck@gmail.com> wrote:
> The effect of this flag is to dump the IR just after the
> linearization, before any simplification, and to stop
> further processing if '=only' is given as argument.
>
> The motivation of this flag is of course for debugging,
> to be able to inspect the raw result of the linearization,
> undisturbed by an simplification.
>

In my view it is better to use the existing -O<n> option to control
whether or not simplifications are done. That way sparse-llvm can be
run with/without simplifications.

Of course there is an issue that what should be the default for this
setting if no option is given by the user. I would suggest that -O0
switches off simplifications, any other value or not specifying -O
switches it on.

Thanks and Regards
Dibyendu

  reply	other threads:[~2017-04-07  0:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-06 23:00 [PATCH 0/4] fix bitfield initiallizers Luc Van Oostenryck
2017-04-06 23:00 ` [PATCH 1/4] add support for a new flag: -fdump-linearize[=only] Luc Van Oostenryck
2017-04-07  0:32   ` Dibyendu Majumdar [this message]
2017-04-07 18:52     ` Luc Van Oostenryck
2017-04-06 23:00 ` [PATCH 2/4] remove bit_size & bit_offset from struct access_data Luc Van Oostenryck
2017-04-06 23:00 ` [PATCH 3/4] add test case for linearize_initializer() of bitfields Luc Van Oostenryck
2017-04-06 23:00 ` [PATCH 4/4] fix implicit zero initializer Luc Van Oostenryck
2017-04-06 23:39   ` Linus Torvalds
2017-04-07  0:13     ` Luc Van Oostenryck

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