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<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Mehdi, again I invite you to discuss this on the cfe-dev thread rather than here. I have posted a reply there to bump it up, and
any comments you have will be more visible and better serve the community over there.<o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--paulr<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> mehdi.amini@apple.com [mailto:mehdi.amini@apple.com]
<br>
<b>Sent:</b> Wednesday, March 01, 2017 3:52 PM<br>
<b>To:</b> Sean Silva<br>
<b>Cc:</b> Robinson, Paul; cfe-commits<br>
<b>Subject:</b> Re: r296554 - [PS4] Set our default dialect to C++11. NFC for other targets.<o:p></o:p></span></p>
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<p class="MsoNormal">On Mar 1, 2017, at 3:24 PM, Sean Silva <<a href="mailto:chisophugis@gmail.com">chisophugis@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">On Wed, Mar 1, 2017 at 10:35 AM, Mehdi Amini <<a href="mailto:mehdi.amini@apple.com" target="_blank">mehdi.amini@apple.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">I’m not sure I find this nice to see this upstream.<o:p></o:p></p>
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<p class="MsoNormal">I not fond in general of this kind of difference in behavior. I don’t think it is good for clang to have different default for this kind of settings depending on the platform. It does not provide a very good user experience from a cross-platform
point of view (i.e. my compiler behaves very differently when I target one platform instead of another).<o:p></o:p></p>
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<p class="MsoNormal">What I like about it is that the upstream PS4 bots now test that we don't depend on the C++98 default language standard in tests, which is net positive IMO since it facilitates future changes. Should this be a point of vendor/platform extensibility?
That's a question for cfe-dev, but I don't think it's unreasonable. (see also: PS4 has -fno-rtti and -fno-exceptions by default, even though users already know to pass the right flags and expect to have to).<o:p></o:p></p>
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<p class="MsoNormal">I rather have the driver rejecting “unsupported configuration”, requiring the right flags, instead of diverging the default.<o:p></o:p></p>
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<p class="MsoNormal">— <o:p></o:p></p>
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<p class="MsoNormal">Mehdi<o:p></o:p></p>
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<p class="MsoNormal">On Feb 28, 2017, at 11:22 PM, Sean Silva via cfe-commits <<a href="mailto:cfe-commits@lists.llvm.org" target="_blank">cfe-commits@lists.llvm.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Nice!<o:p></o:p></p>
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<p class="MsoNormal">-- Sean Silva<o:p></o:p></p>
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<p class="MsoNormal">On Tue, Feb 28, 2017 at 5:01 PM, Paul Robinson via cfe-commits <<a href="mailto:cfe-commits@lists.llvm.org" target="_blank">cfe-commits@lists.llvm.org</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">Author: probinson<br>
Date: Tue Feb 28 19:01:10 2017<br>
New Revision: 296554<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=296554&view=rev" target="_blank">
http://llvm.org/viewvc/llvm-project?rev=296554&view=rev</a><br>
Log:<br>
[PS4] Set our default dialect to C++11. NFC for other targets.<br>
Reapplies r296209 now that r296549 has fixed what really seems to be<br>
the last problematic test.<br>
<br>
Modified:<br>
cfe/trunk/lib/Frontend/CompilerInvocation.cpp<br>
<br>
Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=296554&r1=296553&r2=296554&view=diff" target="_blank">
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=296554&r1=296553&r2=296554&view=diff</a><br>
==============================================================================<br>
--- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original)<br>
+++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Tue Feb 28 19:01:10 2017<br>
@@ -1582,7 +1582,11 @@ void CompilerInvocation::setLangDefaults<br>
case IK_PreprocessedCXX:<br>
case IK_ObjCXX:<br>
case IK_PreprocessedObjCXX:<br>
- LangStd = LangStandard::lang_gnucxx98;<br>
+ // The PS4 uses C++11 as the default C++ standard.<br>
+ if (T.isPS4())<br>
+ LangStd = LangStandard::lang_gnucxx11;<br>
+ else<br>
+ LangStd = LangStandard::lang_gnucxx98;<br>
break;<br>
case IK_RenderScript:<br>
LangStd = LangStandard::lang_c99;<br>
<br>
<br>
_______________________________________________<br>
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<p class="MsoNormal">_______________________________________________<br>
cfe-commits mailing list<br>
<a href="mailto:cfe-commits@lists.llvm.org" target="_blank">cfe-commits@lists.llvm.org</a><br>
<a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits" target="_blank">http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits</a><o:p></o:p></p>
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