[oe] [PATCH/RFC] qt4-embedded: tune QT_ARCH for armv6
holger+oe at freyther.de
Fri Nov 5 10:32:14 CET 2010
On 11/04/2010 08:14 PM, Eric Bénard wrote:
ill it be?
> in the painting engine, from what I saw in the .h, the asm optimisations are
> only enabled when using ARM RCVT compiler and not when using gcc but I have
> not checked everywhere in the code so I'm not sure of this.
that is something else, I also have a partially applied C implementation that
appears to be faster than the brute force armv6 code.
One benefit of using armv6 is that the atomic code will use a different
implementation (ldrex,strex IIRC instead of swp). In any case please use
something like qttracereply to see if passing armv6 is giving any benefit at all.
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