One that uses conditional branches if statments and one that uses indirect jumps.
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This also serves to confirm that the code vTune identifies is indeed the bottleneck.
I have two versions of code.
For the last year model Frizzi Arnold has been the official representative of the German tuning industry, and one of her last duties was to appear in the annual Miss Tuning World calendar.
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The predictor does just that, predicts taken or not taken on conditional jumps using the branch history table and other means.
I have successfully found a way to change these conditional branches into indirect jumps.
By: Horten
+966reps
We are doing this on i5 Sandy Bridge 2400 chips running under Ubuntu 12.
By: Rriocard
+660reps
The 2 links below are all you need to know, but I can't attest as to what Intel's tools do for you, I have my own I wrote and use: Perfwise Perfwise, Thats what I was looking for!
By: Wrench
+779reps
Intel's really got alot of information on branch performance, for the reason it is one of the largest drivers of performance.
By: Sherman
+54reps
My section of code contains 27 branch-like statements if, else if that are condition based.
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