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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 200.46-17.2%Feb 4 3:59 PM EST
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To: muzosi who wrote (19848)11/20/2000 3:45:26 PM
From: PetzRead Replies (2) of 275872
 
muzosi, you are correct about SHL being more useful than ROL, but I'm sure both have the high latency problem on the P4. But a register-register add on a P4 is as good as a SHL and much, much faster. I suspect most code already uses register add rather than SHL, so I don't see P4 gaining anything from compiler or coder optimization.

Petz
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