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VFP vector stride

Vectors can occupy consecutive registers or they can occupy alternate registers. This is controlled by the STRIDE bits in the FPSCR. For example:

  • a vector of length 3, stride 2, starting at s1, is {s1, s3, s5}

  • a vector of length 4, stride 2, starting at s6, is {s6, s0, s2, s4}

  • a vector of length 2, stride 2, starting at d1, is {d1, d3}.

  • a vector of length 4, stride 1, starting at d0, is {d0, d1, d2, d3}.

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