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how to check barnch miss predict

Note: This was originally posted on 3rd August 2009 at http://forums.arm.com

Hello,

I am doing coding in ARM- NEON Assembly on Cortex-A8 (ARMv7-a) architecture?

How to check that branch miss predict happened to avoid extra cycles?

Thanks,

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Rachit Shah over 12 years ago

Note: This was originally posted on 3rd August 2009 at http://forums.arm.com

Hi,
If i am not wrong then you are saying about Performance monitor control register of Cortex A8.
I can able to check the cpu cycle by accessing PMNC but not able to check particular event counter like Instruction cache miss, Data cache miss and others.
I have followed the code with some change as per below link.
[url="http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0204h/Bcfjicfj.html"]http://infocenter.arm.com/help/index.jsp?t...h/Bcfjicfj.html[/url]

Does it work with Code Sourcery IDE ?
What are other setting required to access PMNC ?

Thanks
rach
You could try the PMU
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Rachit Shah over 12 years ago

Note: This was originally posted on 3rd August 2009 at http://forums.arm.com

Hi,
If i am not wrong then you are saying about Performance monitor control register of Cortex A8.
I can able to check the cpu cycle by accessing PMNC but not able to check particular event counter like Instruction cache miss, Data cache miss and others.
I have followed the code with some change as per below link.
[url="http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0204h/Bcfjicfj.html"]http://infocenter.arm.com/help/index.jsp?t...h/Bcfjicfj.html[/url]

Does it work with Code Sourcery IDE ?
What are other setting required to access PMNC ?

Thanks
rach
You could try the PMU
Cancel
Vote up 0 Vote down

Cancel

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