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Re: RFA: Warn when running LTO compiler without any optimization level set

From: Basile Starynkevitch <basile at starynkevitch dot net>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: Nick Clifton <nickc at redhat dot com>, gcc-patches at gcc dot gnu dot org
Date: Fri, 09 Apr 2010 18:16:39 +0200
Subject: Re: RFA: Warn when running LTO compiler without any optimization level set
References: <m339z4hcwb.fsf@redhat.com> <h2w84fc9c001004090820w9a0a7e31gdb5844d85d5e6e1e@mail.gmail.com>

Richard Guenther wrote:

On Fri, Apr 9, 2010 at 5:19 PM, Nick Clifton <nickc@redhat.com> wrote:
Hi Guys,
 Running the LTO compiler without enabling any optimizations is not
 very useful, [...]
 The attached patch adds a warning message for this particular
 circumstance:
lto1: warning: -flto used without an optimization level set - was this intentional ?
This will break all testing as we test with -O0 and -O2.  I don't
think this is a good idea anyway.

I still believe the message is useful. Perhaps it should be made a notice (done with inform).

Cheers

--
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359
8, rue de la Faiencerie, 92340 Bourg La Reine, France
*** opinions {are only mines, sont seulement les miennes} ***

References:
- RFA: Warn when running LTO compiler without any optimization level set
  - From: Nick Clifton
- Re: RFA: Warn when running LTO compiler without any optimization level set
  - From: Richard Guenther

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