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SIMD : VEXT -32-q1-q1-q1-3-slow

br-dev

Hi, i have some issue on an inplace vetx.32 instructions. I post it on the Cortex A forum.  Who has a tip or workaround as it is too slow on A7,A8,A9, etc... ? thanks

vetx-32-q1-q1-q1-3-slow

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  • 0 in reply to Tamar Christina

    Thanks to All for the answer: Paul, Peterson and Tamar.  Your answers contribute to sort it out as per Tamar's comment. I understand the latency of the instructions for in place unfortunately i  also do not see how to do this operation another way.  Doing a different sequence lead also to the same point on my use case  (all roads lead to Rome) . closing the topic then. cheers.

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  • 0 in reply to Tamar Christina

    Thanks to All for the answer: Paul, Peterson and Tamar.  Your answers contribute to sort it out as per Tamar's comment. I understand the latency of the instructions for in place unfortunately i  also do not see how to do this operation another way.  Doing a different sequence lead also to the same point on my use case  (all roads lead to Rome) . closing the topic then. cheers.

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