#Data Hazards #Operand Forwarding #CO closed

Question

Is there any difference in calculating data hazards and dependencies?

Doubt 1:I've read that in data dependencies calculation we chose adjacent instructions only? IS THIS TRUE.

Doubt 2:Calculation of RAW,WAR,WAW hazards include all instructions as a whole not only adjacent.IS THIS TRUE

There are many sources which are confusing

Please Explain how to calculate dependencies and hazards.

Comments

Check it will help https://gateoverflow.in/29896/number-of-war-dependencies

and https://gateoverflow.in/85255/pipeline_hazard

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@Vinay Yadav

But here both says differently.

In one hiding is considered for hazards and in other its not considered??????

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Doubt 1:I've read that in data dependencies calculation we chose adjacent instructions only? 

Consider this example, 

Add r0, r1, r2;

Sub r3, r4, r5;

Add r6, r0, r7;

Here RAW dependency is between I1 and I3 which are surely not adjacent.

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for dependency it can be adjacent or non adjacent