RL4ReAl: Reinforcement Learning for Register Allocation

Autor: VenkataKeerthy, S., Jain, Siddharth, Kundu, Anilava, Aggarwal, Rohit, Cohen, Albert, Upadrasta, Ramakrishna
Rok vydání: 2022
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1145/3578360.3580273
Popis: We aim to automate decades of research and experience in register allocation, leveraging machine learning. We tackle this problem by embedding a multi-agent reinforcement learning algorithm within LLVM, training it with the state of the art techniques. We formalize the constraints that precisely define the problem for a given instruction-set architecture, while ensuring that the generated code preserves semantic correctness. We also develop a gRPC based framework providing a modular and efficient compiler interface for training and inference. Our approach is architecture independent: we show experimental results targeting Intel x86 and ARM AArch64. Our results match or out-perform the heavily tuned, production-grade register allocators of LLVM.
Comment: Published in CC'23
Databáze: arXiv