In some cases, a sequence of logic and movement operations is faster than a conditional jump that skips over one or two instructions to achieve the same result.
32.
Because cores before PIC18 had only unconditional branch instructions, conditional jumps are implemented by a conditional skip ( with the opposite condition ) followed by an unconditional branch.
33.
The data and program memory were separated, operation was instruction-based, the control unit could make conditional jumps, and the machine had a separate I / O unit.
34.
Without branch prediction, the processor would have to wait until the conditional jump instruction has passed the execute stage before the next instruction can enter the fetch stage in the pipeline.
35.
In assembly language, branch predication is a feature of certain central processing unit ( CPU ) instruction sets which permits conditional execution of instructions, without having to perform costly conditional jumps.
36.
Even in his first season riding in Britain, as an apprentice for trainer Toby Balding, McCoy won the Conditional Jump Jockeys Title with a record 74 winners for a conditional jockey.
37.
An additional readability problem is that in conditional jumps such as the one shown above, the conditional instruction ( which skips around the JMP ) highlights the opposite of the condition of interest.
38.
The Intel Pentium MMX, Pentium II and Pentium III have local branch predictors with a local 4-bit history and a local pattern history table with 16 entries for each conditional jump.
39.
Measurements of actual programs suggest that an 8 or 10 bit offset is large enough for some 90 % of conditional jumps ( roughly & plusmn; 256 & plusmn; 1024 bytes ).
40.
Improving on the basic Z2 machine, he built the binary 22-bit floating point calculator featuring programmability with loops but without conditional jumps, with memory and a calculation unit based on telephone relays.
