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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 Paul Black

    Hi Paul, gcc 8.3 but i did bench on many ARM (a7,a8,a9,a53,a72) and the results is homogeneous (different also) but seems logical. How ever i am not that much happy to spend so much cycles  (5 on A7) for a single line instruction. I am happy if you can ask the team some workaround. cheers.  bruno

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  • 0 in reply to Paul Black

    Hi Paul, gcc 8.3 but i did bench on many ARM (a7,a8,a9,a53,a72) and the results is homogeneous (different also) but seems logical. How ever i am not that much happy to spend so much cycles  (5 on A7) for a single line instruction. I am happy if you can ask the team some workaround. cheers.  bruno

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