Unlike all other conditional branches, a " skip " instruction never needs to flush the instruction pipeline, though it may need to cause the next instruction to be ignored.
42.
In most processors, the zero flag is mainly used in conditional branch instructions, which alter control flow on previous instruction results, but there are often other uses as well.
43.
This feature can improve the performance of pipelined CPUs by absorbing some of the time wasted if a CPU mispredicts the operation of a conditional branch, and the CPU's pipeline stalls.
44.
From the 1830s until the 1940s, mechanical calculating machines such as adders and multipliers were built and improved, but they could not perform a conditional branch and therefore were not Turing complete.
45.
Conditional branches test whether the least significant bit of a register is set or clear, or compare a register as a signed quadword to zero, and branch if the specified condition is true.
46.
Additionally, buffering stores until retirement allows processors to speculatively execute store instructions that follow an instruction that may produce an conditional branch instruction whose direction ( taken or not taken ) is not yet known.
47.
Constant propagation can also cause conditional branches to simplify to one or more unconditional statements, when the conditional expression can be evaluated to true or false at compile time to determine the only possible outcome.
48.
Simple power analysis can easily distinguish the outcome of conditional branches in the execution of cryptographic software, since a device does different things ( consuming different power ) depending on whether the conditional branch is taken.
49.
Simple power analysis can easily distinguish the outcome of conditional branches in the execution of cryptographic software, since a device does different things ( consuming different power ) depending on whether the conditional branch is taken.
50.
The Ra field specifies a register to be tested by a conditional branch instruction, and if the condition is met, the program counter is updated by adding the contents of the displacement field with the program counter.
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