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Porting BLEv1.2 Projects to BLEv1.3 Number of virtual registers
The compiler uses a set of virtual registers—located in data memory—to be used like any other registers. A minimum of 8 virtual registers are required by the compiler, but as many as 32 can be used. A larger set of virtual registers makes it possible for the compiler to allocate more variables into registers. However, a larger set of virtual registers also requires a larger data memory area. In the Large data model you should probably use a larger number of virtual registers, for example 32, to help the compiler generate better code.
