Computers and Technology, 06.04.2020 22:30 michelerin9486

Ld' is the instruction with the longest latency on the CPU from Section 4.4 (in RISC-V text). If we modified ld and sd so that there was no offset (i. e., the address to be loaded from/stored to must be calculated and placed in rs1 before calling ld/sd), then no instruction would use both the ALU and Data memory. This would allow us to reduce the clock cycle time. However, it would also increase the number of instructions, because many ld and sd instructions would need to be replaced with ld/add or sd/add combinations.
(a) What is the primary factor that influences whether a program will run faster or slower on the new CPU?
(b) Do you consider the original CPU a better overall design; or do you consider the new CPU a better overall design? Why?

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Ld' is the instruction with the longest latency on the CPU from Section 4.4 (in RISC-V text). If we...