Computer Organization II,  Autumn 2006, HW 6

These questions will be covered in practise sessions during the week 41 (9-13.10.2006)
Problems 2-5 are based on week 41 lectures.
Please remember to give course feedback. Thanks.

1. [2 hwp] Problem 14.6 [Stal06]          (14.6 [Stal03])   (13.6 [Stal99])
   Please note, that the comment fields given for instructions (I4) and (I6) are wrong.


2. Control speculation is presented for a situation where load-instruction is hoisted above one (conditional) branch.Similarly, data speculation is presented in a situation where load-instruction is hoisted above one store-instruction.
   1. How does control speculation situation change if there would be no branch-instructions between the hoisted instruction location and the original location?
   2. How does data speculation situation change if there would be no store-instructions between the hoisted instruction location and the original location?
   3. How does control speculation situation change if there would be two branch-instructions in between?
   4. How does data speculation situation change if there would be store-instructions in between?
   5. Could one get the same effect with predicates? How or why not?
      
   
   
3. How does the IA-64 register stack differ from the RISC-architecture register window presented earlier? What do they have in common?
   


4. Problems 16.1 and 16.2 [Stal06]            (16.1, 16.2 [Stal03])   (14.1, 14.2[Stal99])
   


5. Problems 17.4 and 17.5 [Stal06]            (17.4, 17.5 [Stal03])   (15.4, 15.5[Stal99])
   Note that the "mikro-operation field" and "address selection field" are part of the "Control" field in Fig 17.7 (15.7 [Stal99]) just like in Fig 17.6 (15.6 [Stal99]).