Consider the following program segment:   START: LDUR X10, [X1, #0] LDURX11, [X1, #8] ADDX12, X10, X11 SUBIX1, X1, #16 CBNZX12, START   Let us assume there is no control hazard. a. Is there a data Hazard? Identify the instructions that are involved with that hazard if any. b. Show a five stages pipeline execution diagram for the first two iterations of the above program segment. c. Mark the pipeline stages that do not perform useful work.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Consider the following program segment:

 

START: LDUR X10, [X1, #0]

LDURX11, [X1, #8]

ADDX12, X10, X11

SUBIX1, X1, #16

CBNZX12, START

 

Let us assume there is no control hazard.

a. Is there a data Hazard? Identify the instructions that are involved with that hazard if any.

b. Show a five stages pipeline execution diagram for the first two iterations of the above program segment.

c. Mark the pipeline stages that do not perform useful work.

 

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