Data dependency: Data dependency occurs when the data that is produced by another instruction is required to process another instruction. Data dependency is of three types they are: RAW(Read After Write) The instruction that is present later reads an operand before the instruction that is present at earlier instruction being read. WAW(Write After Write) The instruction that is present later writes to an operand before the instruction that is present at earlier instruction being written. WAR(Write After Read) The instruction that is present later writes to an operand before the instruction that is present at earlier instruction being read.

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Chapter 4, Problem 4.9.3E

Program Plan Intro

Data dependency:

Data dependency occurs when the data that is produced by another instruction is required to process another instruction.

Data dependency is of three types they are:

RAW(Read After Write)

The instruction that is present later reads an operand before the instruction that is present at earlier instruction being read.

WAW(Write After Write)

The instruction that is present later writes to an operand before the instruction that is present at earlier instruction being written.

WAR(Write After Read)

The instruction that is present later writes to an operand before the instruction that is present at earlier instruction being read.

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