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===== Using a Specific Register Width on AArch64 =====
On AArch64, you may need to access a 32-bit version of a register. To do this with templated register names, you can add the 'w' modifier. For example, if %0 is x22 and you need to access w22, use %w0.
==== Constraining an Operand to a Specific Register ====
