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Predeclared extension register names

You can write the names of NEON and VFP registers either in upper case or lower case.

The following extension register names are predeclared:

Table 2-3 Predeclared extension registers

Register names

Meaning

q0-q15 and Q0-Q15

NEON quadword registers

d0-d31 and D0-D31

NEON doubleword registers, VFP double-precision registers

s0-s31 and S0-S31

VFP single-precision registers