Exact(13)
The circuits in the CPU control section provide branch instructions, which make elementary decisions about what instruction to execute next.
At the machine-language level, loops and conditionals are implemented with branch instructions that say "jump to" a new point in the program.
The ALU carries out basic arithmetic and logic operations, and the control section determines the sequence of operations, including branch instructions that transfer control from one part of a program to another.
Then it explains the branch and conditional branch instructions.
The frequency and behavior of branch instructions seriously hinder performance of ILP processors.
For example, flipping one bit of key branch instructions can incur a completely different behavior.
Similar(47)
A branch instruction might render preloaded instructions in the pipeline useless if they entered it before the branch jumped to a new part of the program.
If it is a branch instruction, part of it will contain the memory address of the next instruction to execute once the branch condition is satisfied.
Update the program counter to hold the next instruction location, which is either the next memory location or the address specified by a branch instruction.
For example, a branch instruction might be "If the result of the last ALU operation is negative, jump to location A in the program; otherwise, continue with the following instruction".
Adding a conditional branch instruction would simplify the interleave programs in some cases.
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