main.py

import gradio as gr
import torch
import subprocess
import tempfile

def process_code(pytorch_code):
    output = {}

    try:
        # Step 1: Write the input code to a temporary file
        with tempfile.NamedTemporaryFile(delete=False, suffix=".py") as code_file:
            code_file.write(pytorch_code.encode())
            code_file.flush()

            # Step 2: Run the PyTorch code to generate TorchScript
            #script_output_path = tempfile.NamedTemporaryFile(delete=False, suffix=".pt").name
            subprocess.run(
                ["python3", code_file.name],
                check=True,
                capture_output=True,
            )

            print("Converted to onnx.")

            # Step 3: Convert TorchScript to MLIR (torch dialect)
            torch_mlir_path = tempfile.NamedTemporaryFile(delete=False, suffix=".mlir").name
            subprocess.run(
                ["torchscript-to-mlir", "-i", script_output_path, "-o", torch_mlir_path],
                check=True,
                capture_output=True,
            )
            with open(torch_mlir_path, "r") as file:
                output["Torch Dialect"] = file.read()

            # Step 4: Lower Torch dialect to Linalg dialect
            linalg_mlir_path = tempfile.NamedTemporaryFile(delete=False, suffix=".mlir").name
            subprocess.run(
                ["mlir-opt", torch_mlir_path, "-convert-torch-to-linalg", "-o", linalg_mlir_path],
                check=True,
                capture_output=True,
            )
            with open(linalg_mlir_path, "r") as file:
                output["Linalg Dialect"] = file.read()

            # Step 5: Lower Linalg dialect to GPU dialect
            gpu_mlir_path = tempfile.NamedTemporaryFile(delete=False, suffix=".mlir").name
            subprocess.run(
                ["mlir-opt", linalg_mlir_path, "-convert-linalg-to-gpu", "-o", gpu_mlir_path],
                check=True,
                capture_output=True,
            )
            with open(gpu_mlir_path, "r") as file:
                output["GPU Dialect"] = file.read()

            # Step 6: Lower GPU dialect to LLVM dialect
            llvm_mlir_path = tempfile.NamedTemporaryFile(delete=False, suffix=".mlir").name
            subprocess.run(
                ["mlir-opt", gpu_mlir_path, "-convert-gpu-to-llvm", "-o", llvm_mlir_path],
                check=True,
                capture_output=True,
            )
            with open(llvm_mlir_path, "r") as file:
                output["LLVM Dialect"] = file.read()

    except subprocess.CalledProcessError as e:
        output["Error"] = f"An error occurred: {e.stderr.decode()}"

    return output

# Gradio interface
iface = gr.Interface(
    fn=process_code,
    inputs="text",
    outputs=[
        gr.Textbox(label="Torch Dialect", lines=10),
        gr.Textbox(label="Linalg Dialect"),
        gr.Textbox(label="GPU Dialect"),
        gr.Textbox(label="LLVM Dialect"),
    ],
    title="PyTorch to MLIR Lowering",
    description="Input PyTorch code for matrix multiplication to see each lowering step in MLIR.",
)

if __name__ == "__main__":
    iface.queue()
    iface.launch(server_name="0.0.0.0", server_port=7860)