RealView® Compilation Tools Assembler Guide 7.2.10. QN

The QN directive defines a name for a specified NEON Quadword register. The names q0-q15 and Q0-Q15 are predefined for NEON.

name QN expr

where:

name: is the name to be assigned to the Q register. name cannot be the same as any of the predefined names listed in Predefined register and coprocessor names.
expr: evaluates to a Q register number from 0 to 15.

Use QN to allocate convenient names to Q registers, to help you to remember what you use each one for.

Avoid conflicting uses of the same register under different names.

speed   QN 5    ; defines speed as a symbol for Q register 5

Copyright © 2002-2006 ARM Limited. All rights reserved.	ARM DUI 0204G
Non-Confidential
PDF version