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Is there an intrinsic to store 3 float values?

lefty

I have the following code in assembler:

    vst1.32            {d10}, [%[pOutVertex2]]          
   fsts               s22, [%[pOutVertex2], #8]             

This stores s20, s21, s22 into pOutVertex which is an array of 3 floats. Is there an intrinsic to do this? I can only find vst1q_f32, but that would overwrite the 4th value in pOutVertex.

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  • 0 Arm Employee Badge in reply to lefty

    Things which are not a power of two or a full register are a pain in NEON, but if you are willing to sacrifice a little storage space the obvious data layout change would be to allocate vec4() inputs and outputs. The final increment then becomes a vec4 load of pOutVertex, a vec4 addition, and a vec4 store to write the incremented value of pOutVertex.

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  • 0 Arm Employee Badge in reply to lefty

    Things which are not a power of two or a full register are a pain in NEON, but if you are willing to sacrifice a little storage space the obvious data layout change would be to allocate vec4() inputs and outputs. The final increment then becomes a vec4 load of pOutVertex, a vec4 addition, and a vec4 store to write the incremented value of pOutVertex.

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