8.18 VFP vector wrap-around

In VFP vector mode, if a vector extends beyond the end of a bank, it wraps around to the beginning of the same bank.

For example:
  • A vector of length 6 starting at s5 is {s5, s6, s7, s0, s1, s2}.
  • A vector of length 3 starting at s15 is {s15, s8, s9}.
  • A vector of length 4 starting at s22 is {s22, s23, s16, s17}.
  • A vector of length 2 starting at d7 is {d7, d4}.
  • A vector of length 3 starting at d10 is {d10, d11, d8}.
A vector cannot contain registers from more than one bank.
Related concepts
8.17 Vectors in the VFP extension register bank
8.20 Restriction on vector length
8.19 VFP vector stride
Related information
ARM Architecture Reference Manual
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