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84 Instruction-Decoding Optimizations Chapter 4
25112 Rev. 3.06 September 2005
Software Optimization Guide for AMD64 Processors
Function arguments on the stack can now be accessed at positive offsets relative to rBP, and local
variables are accessible at negative offsets relative to rBP.
Example
The traditional function epilogue looks like this:
mov esp, ebp ; Deallocate local variables (only if space was allocated).
pop ebp ; Restore old frame pointer.
Replace the traditional function epilogue with a single LEAVE instruction:
leave