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ARC Subroutine that Performs a Swap Operation

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Please help an ARC subroutine that performs a swap operation on the 32-bit operands
x=25
y=50
which are stored in memory. Please use as few registers as possible. Thanks!!

UPDATE: The ARC is a 32-bit machine with byte addressable memory. It can manipulate 32 bit data types, but all data is stored in memory as bytes, and the address of a 32 bit word is the address of its byte that has the lowest address.

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Solution Summary

The solution writes an ARC subroutine that performs a swap operation on the 32-bit operands x=25 y=50 which are stored in memory.

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Here is how you should write this subroutine.
<br><br>
<br><br>register x = 25
<br><br>register y = 50
<br><br>register temp = ...

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