conditional jump वाक्य
उदाहरण वाक्य
मोबाइल
- Remember that many instructions set flags according to their result, obviating the need for an explicit test before the conditional jump.
- For example, a common code sequence like a compare followed by a conditional jump would become a single micro-op.
- Conditional jumps that are taken every second time or have some other regularly recurring pattern are not predicted well by the saturating counter.
- Conditional jumps are taken ( execution continues at another address ) or not ( execution continues at the next instruction ) depending on some condition.
- When the code for a conditional jump is read we do not yet know the next instruction to execute and insert into the execution pipeline.
- The conditional jump instructions are listed in pairs, the former opcode is for a forward jump, and the latter one for a backward jump.
- There are three main classes of instruction : arithmetic, logical, and move; conditional jump; conditional skip ( which may have side effects ).
- The branch predictor attempts to avoid this waste of time by trying to guess whether the conditional jump is most likely to be taken or not taken.
- The stack was flushed by an unconditional jump instruction, so unconditional jumps at the ends of loops were conventionally written as conditional jumps that would always succeed.
- The branch predictor may, for example, recognize that the conditional jump is taken more often than not, or that it is taken every second time.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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 ).
- 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.
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