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Date: Mon, 17 Feb 2014 14:44:58 -0800
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From: Khem Raj <raj.khem@gmail.com>
To: openembedded-devel@lists.openembedded.org
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Cc: Andre McCurdy <andre.mccurdy@entropic.com>
Subject: Re: [meta-qt5] why does Qt5 build with ARM_INSTRUCTION_SET = "arm"
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-Khem
On Feb 17, 2014 1:28 PM, "Nicolas Dechesne" <nicolas.dechesne@linaro.org>
wrote:
>
> hi,
>
> does anybody know why in Qt5/qtbase.inc, we have:
>
> ARM_INSTRUCTION_SET = "arm"

there were issues with thumb1 and i guess legacy continued may be its not
needed any longer test it out and send a patch
make sure that when its using thumb1 then current logic still kicks in
>
> Could it be an a low hanging fruit from the past? e.g. before
> https://bugreports.qt-project.org/browse/QTBUG-16402 or
>
https://qt.gitorious.org/qt/qtbase/commit/a3bd9d4c0f3d9e80dbe35bd88649b245dca5f410
?
>
> as a matter of fact, for our project Qt5 (and QtWebkit) are building
> (and working fine) when built with Thumb2, outside of OE. Also using
> ARM instruction set instead of Thumb2 enforces Webkit to use the ARM
> version of the javascript JIT, while the Thumb2 JIT engine seems to
> work a lot better in our testing...
>
> cheers
>
> nico
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