Qt Creator Assembly Output

 

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  • What's the purpose of the LEA instruction? 14 answers

    • LEA stands for Load Effective Address. It's used to perform an address computation, but then rather than accessing the value at that address it stores the computed address in the destination register.

    In this case, it's storing the value of EDX + (EAX * 1) into ECX. This is an alternative to the two-instruction sequence 

    movl %edx, %ecx
addl %eax, %ecx
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