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3.7 Predeclared extension register names in AArch32 state

You can write the names of Advanced SIMD and floating-point registers either in upper case or lower case.

The following table shows the predeclaredextension register names:

Table 3-3 Predeclared extension registers in AArch32 state

Register names

Meaning

Q0-Q15

Advanced SIMD quadword registers

D0-D31

Advanced SIMD doubleword registers, floating-point double-precisionregisters

S0-S31

Floating-point single-precision registers

You can write the register names either in upper case or lowercase.

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