Base Integer ISA (RV32I and RV64I) Execution Model: Step-by-Step Walkthrough

Step-by-step walkthrough

Step-by-Step Walkthrough for Base Integer ISA (RV32I and RV64I) Execution Model is anchored on Instruction count mix, branch density, and CPI breakdown by ALU, load/store, branch, and control-transfer classes.. Convert observations into mechanism-backed decisions with explicit ownership.

1. Define failing workload and acceptance threshold.

2. Capture reproducible metadata and evidence snapshot.

3. Classify dominant mechanism path.

4. Propose minimal reversible change.

5. Validate cross-workload and corner behavior.

6. Document owner and rollout decision.

Reference path

RISC-V PIPELINE DIAGRAM - Base Integer ISA (RV32I and RV64I) Execution Model

PC -> IF -> ID -> EX -> MEM -> WB
      |     |      |      |      |
  i-cache decode  ALU/BR  LSU    regfile write
              \   |
               +-> branch resolve + redirect

Hot paths:
  - branch + load-use dependencies in ID/EX
  - memory latency stretching MEM stage
  - writeback arbitration for integer/vector units

Focus: keep control hazards predictable