Write operations occur in the first half of the clock cycle and reads occur in the second half of the clock cycle. The table below shows the pipelining diagram for three instructions. Inst/CC 1 2 3 4 5 6 Inst. 1 IF ID EXE MEM WB Stall Inst. 2 Inst. 3 7 8 IF ID EXE MEM WB IF ID EXE MEM WB Where CC stands for clock cycle, stalls are shown as empty rows, and forwarding is indicated between associated stages using an arrow. LDUR X0, [X0, #5] SUB X2, X0, XO SUB X3, X1, X2 ADD X3, X2, X3 ADD X4, X1, X3 a. First assume forwarding is not available, show a similar table for the following sequence of instructions and indicate stalls with empty rows. How many cycles are needed to execute the above sequence of instructions?
Write operations occur in the first half of the clock cycle and reads occur in the second half of the clock cycle. The table below shows the pipelining diagram for three instructions. Inst/CC 1 2 3 4 5 6 Inst. 1 IF ID EXE MEM WB Stall Inst. 2 Inst. 3 7 8 IF ID EXE MEM WB IF ID EXE MEM WB Where CC stands for clock cycle, stalls are shown as empty rows, and forwarding is indicated between associated stages using an arrow. LDUR X0, [X0, #5] SUB X2, X0, XO SUB X3, X1, X2 ADD X3, X2, X3 ADD X4, X1, X3 a. First assume forwarding is not available, show a similar table for the following sequence of instructions and indicate stalls with empty rows. How many cycles are needed to execute the above sequence of instructions?
Chapter5: Making Decisions
Section: Chapter Questions
Problem 1RQ
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![Write operations occur in the first half of the clock cycle and reads occur in the second half of
the clock cycle. The table below shows the pipelining diagram for three instructions.
Inst/CC
1
2
3
4
5
6
Inst. 1
IF
ID
EXE
MEM
WB
Stall
Inst. 2
Inst. 3
7
8
IF
ID
EXE
MEM
WB
IF
ID
EXE
MEM WB
Where CC stands for clock cycle, stalls are shown as empty rows, and forwarding is indicated
between associated stages using an arrow.
LDUR X0, [X0, #5]
SUB X2, X0, XO
SUB X3, X1, X2
ADD X3, X2, X3
ADD X4, X1, X3
a. First assume forwarding is not available, show a similar table for the following sequence
of instructions and indicate stalls with empty rows. How many cycles are needed to
execute the above sequence of instructions?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F30fc4209-43ac-409b-8363-1a56de792bf2%2Fe97208d8-98bd-4e04-8ad0-4b0967449b7b%2Fcgmfbi_processed.png&w=3840&q=75)
Transcribed Image Text:Write operations occur in the first half of the clock cycle and reads occur in the second half of
the clock cycle. The table below shows the pipelining diagram for three instructions.
Inst/CC
1
2
3
4
5
6
Inst. 1
IF
ID
EXE
MEM
WB
Stall
Inst. 2
Inst. 3
7
8
IF
ID
EXE
MEM
WB
IF
ID
EXE
MEM WB
Where CC stands for clock cycle, stalls are shown as empty rows, and forwarding is indicated
between associated stages using an arrow.
LDUR X0, [X0, #5]
SUB X2, X0, XO
SUB X3, X1, X2
ADD X3, X2, X3
ADD X4, X1, X3
a. First assume forwarding is not available, show a similar table for the following sequence
of instructions and indicate stalls with empty rows. How many cycles are needed to
execute the above sequence of instructions?
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