The file pipe-full . hcl contains a copy of the PIPE HCL description, along with a decim...

The file pipe-full . hcl contains a copy of the PIPE HCL description, along with a decimation of the constant value IIADDQ. Modify this file to implement the iaddq instruction, as described in Practice Problem 4.3 and Problem 4.51. See the lab material for directions on how to generate a simulator for your solution and how to test it.

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Practice Problem 4.3 introduced the iaddq instruction to add immediate data to a register. Describe the computations performed to implement this instruction. Use the computations for irmovq and OPq (Figure 4.18) as a guide.

One common pattern in machine-level programs is to add a constant value to a register. With the Y86-64 instructions presented thus far, this requires first using an irmovq instruction to set a register to the constant, and then an addq instruction to add this value to the destination register. Suppose we want to add a new instruction iaddq with the following format:

This instruction adds the constant value V to register rB. Rewrite the Y86-64 sum function of Figure 4.6 to make use of the iaddq instruction. In the original version, we dedicated registers %r8 and Xr9 to hold constant values. Now, we can avoid using those registers altogether.