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IDA Pro 7.2 has a new functionality named force new variable.
Here and Here.
force new variable
But it is only efficient for stack-based variables. How can I force a new variable for a register-based variables?
You can't, not as a standard command that's currently available through the user interface, anyway. Force new variable only works for stack locations. Perhaps a future version of Hex-Rays will allow the user to force new register variables.
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