I am using MPC8461D. The software prefetch instructions included in Altivec instructions are vec_dst, vec_dstst, vec_dststt, vec_dstt. I am not able to get a clear idea how these instructions help in prefetching the data and how the caches L1 and L2 are

[snehaljadhav]

I am not able to get a clear idea how these instructions help in prefetching the data and how the caches L1 and L2 are being used.

Please help me with the working of these instructions.

[alexander_yakov]

If the question is related to particular (Altivec) instructions, than please look e600 Core Reference Manual, Section 7.1.2.3 "Data Stream Touch Instructions" for start.

Here is a direct link to this document:

https://www.nxp.com/docs/en/reference-manual/E600CORERM.pdf

Have a great day,
Alexander
TIC

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