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Re: What does SSE2 usage enhance? [message #39703 is a reply to message #39702]

Thu, 18 April 2013 11:58

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

I see, I have checked the assembly and memcpy gets inlined with unaligned load, which is still faster than loading 4 bytes separated like SVO_MOVE does.

So the actual code for this memcpy is

00401744  mov ecx,[eax] 
00401746  mov [esp+0x4],ecx

(SVO_MOVE is designed for small variable size).

Mirek

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[Message index]

		What does SSE2 usage enhance? By: crydev on Wed, 10 April 2013 13:31
		Re: What does SSE2 usage enhance? By: mirek on Mon, 15 April 2013 18:34
		Re: What does SSE2 usage enhance? By: crydev on Wed, 17 April 2013 10:54
		Re: What does SSE2 usage enhance? By: mirek on Wed, 17 April 2013 11:17
		Re: What does SSE2 usage enhance? By: mirek on Wed, 17 April 2013 11:20
		Re: What does SSE2 usage enhance? By: crydev on Wed, 17 April 2013 22:04
		Re: What does SSE2 usage enhance? By: mirek on Thu, 18 April 2013 06:34
		Re: What does SSE2 usage enhance? By: crydev on Thu, 18 April 2013 08:33
		Re: What does SSE2 usage enhance? By: mirek on Thu, 18 April 2013 10:38
		Re: What does SSE2 usage enhance? By: crydev on Thu, 18 April 2013 11:43
		Re: What does SSE2 usage enhance? By: mirek on Thu, 18 April 2013 11:58

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