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Is pre-compiled ARM9 libs able to run on an ARM11 chip

Note: This was originally posted on 15th October 2008 at http://forums.arm.com

Hi

I have couple pre-compiled libs in ARM9, is there a problem if link it with other ARM11 code and put on an ARM11 chip?

Thanks,
-ppj

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0 Peter Harris over 12 years ago

Note: This was originally posted on 16th October 2008 at http://forums.arm.com

Just to reinforce what bhav said, you will get a signficant performance boost if you recompile for ARM11. In particular the ARM9 branch code scheduling is not usually "nice" to the the ARM11 branch predictor, so branches will be a lot more expensive.
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0 Peter Harris over 12 years ago

Note: This was originally posted on 16th October 2008 at http://forums.arm.com

Just to reinforce what bhav said, you will get a signficant performance boost if you recompile for ARM11. In particular the ARM9 branch code scheduling is not usually "nice" to the the ARM11 branch predictor, so branches will be a lot more expensive.
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