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Setting a register to 0. Need help, thanks.

 
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Dr.Disrespect
Grandmaster Cheater
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Joined: 17 Feb 2016
Posts: 526
PostPosted: Mon Feb 29, 2016 3:39 pm    Post subject: Setting a register to 0. Need help, thanks. Reply with quote
If I understand correctly, the following code set a register to 0, for example:
Code:
xor ecx,ecx


However, why not just use:
Code:
mov ecx,0


Do those two lines of code produce the same result? If so, why still use "xor ecx,ecx"? Is it executed faster? Thanks a lot.
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akumakuja28
Master Cheater
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Joined: 28 Jun 2015
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PostPosted: Mon Feb 29, 2016 3:54 pm    Post subject: Reply with quote
xor is faster. According to the cpu.

But yes they do the same thing
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Dr.Disrespect
Grandmaster Cheater
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Joined: 17 Feb 2016
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PostPosted: Tue Mar 01, 2016 12:23 am    Post subject: Reply with quote
akumakuja28 wrote:
xor is faster. According to the cpu.

But yes they do the same thing


Thanks a lot.
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