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; Most architectures will transform the index in some way before ; adding it to the program counter. table; The branch table begins here with this label goto index_zero; each of these goto instructions is an unconditional branch goto index_one; of code. goto index_two goto index_three index_zero; Code is added here to perform whatever action is ...
Continuation at a different statement (unconditional branch or jump) Executing a set of statements only if some condition is met (choice - i.e., conditional branch) Executing a set of statements zero or more times, until some condition is met (i.e., loop - the same as conditional branch)
[a] Branch (or branching, branched) may also refer to the act of switching execution to a different instruction sequence as a result of executing a branch instruction. Branch instructions are used to implement control flow in program loops and conditionals (i.e., executing a particular sequence of instructions only if certain conditions are ...
c 1-c 6 – these six control bits specify the operands and computation to be performed by the ALU d 1-d 3 – these three bits specify the destination(s) for storing the current ALU output j 1-j 3 – these three bits specify an arithmetic branch condition, an unconditional branch (jump), or no branching
Predicated instructions with different predicates can be mixed with each other and with unconditional code, allowing better instruction scheduling and so even better performance. Elimination of unnecessary branch instructions can make the execution of necessary branches, such as those that make up loops, faster by lessening the load on branch ...
In computer architecture, a branch target predictor is the part of a processor that predicts the target, i.e., the address of the instruction that is executed next, of a taken conditional branch or unconditional branch instruction before the target of the branch instruction is computed by the execution unit of the processor.
The control table entries are then much more similar to conditional statements in procedural languages but, crucially, without the actual (language dependent) conditional statements (i.e. instructions) being present (the generic code is physically in the interpreter that processes the table entries, not in the table itself – which simply ...
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