Out with LSQs

[rpirayadi]

1. Main Feature: HandshakeCreateOutWithLSQsCircuit Pass

Implements the HandshakeCreateOutWithLSQsCircuit pass based on DOI: 10.1145/3748173.3779204.

• Replaces the standard LSQ circuit with elastic components.
• Inserts the Out with LSQs circuit for each pair of memory accesses that have a dependency.
• Note for Reviewers: Refer to Figure 8 in the paper for a visual representation of this circuit architecture.

2. New Components

Introduced two new hardware components to support the implementation:

• ctrl_extractor: Extracts the handshake logic from a channel so it can be used to generate a done signal from a load output.
• gate: Accepts a single channel input joined with one or more control signals. The output data is identical to the input data, but the control path acts like a join across the control signals.

3. Store done Signal Updates

• Added done signal handling for store operations across the memory path.
• Updated the LSQ, Memory Controller, and store ports to support and propagate this new signal.