Given the following sequence of instructions: R1 = x + 1 Y = R1 + R2 R1 = R2 + x Complete the following: 1. Lay the instructions out as they would be fed through a 6-stage CPU pipeline (as described in the text, page 104) not accounting for any hazards. s1: Fetch instruction, S2: Decode opcode, 53: Calc effective address of operands, s4: Fetch operands, S5: Execute instruction, S6: Store result 3. Identify any hazards present 4. "Fix" the pipeline process to remove the hazards