2.11 Predeclared extension register names

You can write the names of 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
d0-d31 and D0-D31
VFP double-precision registers.

Note

Some versions of VFP have sixteen double-precision registers, D0-D15.
s0-s31 and S0-S31
VFP single-precision registers
Related concepts
8.4 Extension register bank mapping in VFP
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