1. Use local value numbering to optimize the following code. You should show the key/value number table as well as the final optimized code. Hint: The optimized code will have only one change to the right-hand side of one of the instructions. 2. Use local value numbering with constant folding to optimize the following code. You should show the key/value number table, value number/value constant table, and the final optimized code. 1. Use local value numbering to optimize the following code. You should show the key/value number table as well as the final optimized code. Hint: The optimized code will have only one change to the right-hand side of one of the instructions. 2. Use local value numbering with constant folding to optimize the following code. You should show the key/value number table, value number/value constant table, and the final optimized code