Consider the following.
load r1, 16(r2) ; S1
addi r4, r4, r1 : S2
addi r10, r12, r14 ; S3
bnez r10, target; S4
addi r14, r, r10; S5
store r10, 0(r2); S6
Q. Identify each dependency by type (data, name or control dependency); list the two instructions involved; identify which instruction is dependent; and, if there is one, name the storage location
Following dependencies are there in given sequence of instructions: 1.Data dependency between s1 and s2 Dependent: s2 Storage location: r1 2.Control dependency between s3 and s4 Dependent: s4 Storage location: r10 3.Data dependency between s3 and s5 Dependent: s5 Storage location: r10
Consider the following. load r1, 16(r2) ; S1 addi r4, r4, r1 : S2 addi r10,...
Given the following sequence of instructions: lw $s2, 0($s1) //1 lw $s1, 40($s3) //2 sub $s3, $s1, $s2 //3 add $s3, $s2, $s2 //4 or $s4, $s3, $zero //5 sw $s3, 50($s1) //6 a. List the read after write (current instruction is reading certain registers which haven’t been written back yet) data dependencies. As an example , 3 on 1 ($s2) shows instruction 3 has data dependency on instruction 1 since it is reading register $s2. b. Assume the 5...
We have the following sequence of instructions in assembly language. lw r4, 4($s1) or r1,r2,r3 or r2,r1,r4 or r1,r1,r2 Using your knowledge of piplining and the five stages (IF, ID, EXE, MEM, WB) Assume there is forwarding in this pipelined processor and each stage will take 200ns. Draw the pipeline chart and calculate how many cycles are consumed
Consider the following operations: A B- C The corresponding assembly code instruction list generated by a compiler are 1 load [%r0 +4], %r1 2 load [%r0 + 8], %r2 3 sub %r1, %r2,%r3 4 load [ZrO + 12], %r4 5 add %r3, %r4 , %r5 6 store %r3, [%r0 + 16] 7 store %r5, [%r0 + 20] a) Identify the potential pipeline hazards. (10 points) b) State if the found hazards can be eliminated and if so propose a scheme...
Consider a VEX-executing VLIW machine with the following characteristics: The machine supports 4 slots (4-wide machine) with the following resources: 2 memory units each with a load latency of 3 cycles 2 integer-add/sub functional units with a latency of 2 cycle 1 integer-multiply functional unit with a latency of 4 cycles Each functional unit in the machine is pipelined and can be issued a new operation at each cycle. However, the results of an operation are only available after the...
Part 2 (22 pts) .ORIG x3000 LEA R1, STRZ AND R2, R2, #0 LD R4, CHAR REPEAT LDR R3, R1, #0 BRz FINISH ;Branch to FINISH if the value of R3 is zero ADD R3, R3, R4 BRnp PASS ;Branch to PASS if the value of R3 is positive or negative ADD R2, R2, #1 PASS ADD R1, R1, #1 BR REPEAT ;Branch always to REPEAT FINISH ST R2, COUNT HALT CHAR .FILL xFF91 COUNT .FILL x0000 STRZ .STRINGZ "Hello...
5. Consider the SPIM code below. globl main .text main: ori $t1, $0, 10 ori $t2, $0, 11 add $t3, $t1,$t2 move $t4, $t3 The following image shows a screen shot of QtSPIM page when this program is loaded, and executed in step-by step fashion. Current instruction is highlighted. Data Text x Text Regs Int Regs [16] Int Regs [16] PC = 400028 EPC 0 Cause = 0 BadAddr = 0 Status = 3000ff10 HI LO = 0 = 0...