Author: Uri Blass
Date: 11:04:16 02/26/03
I had the following code in my program
do
{
...
if (info[target]==EMPTA)
target+=8;
else
target=64;
}
while (target<64)
I found that changing it to else break did not do my program faster.
I think that with break I have branches and without break the compiler can
translate it to
target=((info[target]==EMPTA)?target+8:64);
My questions are
1)How can I write the code as branchless code without target=64 that is a waste
of time?
2)I understood from previous discussion that for some reason ? is considered
branchless code.
What is the reason for it.
It seems to me that using ? is the same as using if.
If it is not the case then what is the difference?
Uri
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