SIGNALAI·May 29, 2026, 4:00 AMSignal75Medium term

PassNet: Scaling Large Language Models for Graph Compiler Pass Generation

Source: arXiv cs.LG

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PassNet: Scaling Large Language Models for Graph Compiler Pass Generation

arXiv:2605.29357v1 Announce Type: cross Abstract: Modern tensor compilers such as TorchInductor deliver substantial speedups on mainstream models, yet face a systematic performance ceiling on long-tail workloads -- our profiling shows that 43% of real-world subgraphs experience end-to-end slowdowns under default compilation. While LLMs offer a path toward automated optimization, existing efforts focus on standalone kernel generation. We argue that pass generation -- where LLMs author structured graph transformations that integrate directly into compiler pipelines -- is the more appropriate abs

Why this matters
Why now

The increasing complexity of AI models and the critical need for performance optimization are driving researchers to leverage LLMs for compiler automation.

Why it’s important

This development indicates a significant advancement in automating complex software engineering tasks, particularly in the performance-critical domain of AI model compilation and deployment.

What changes

LLMs are moving beyond simple code generation towards more sophisticated, structured transformations within critical system pipelines like compilers, potentially reducing manual optimization efforts.

Winners
  • · AI model developers
  • · Cloud infrastructure providers
  • · Hardware manufacturers
  • · Software engineering tools
Losers
  • · Manual compiler optimization specialists
  • · Companies with inefficient AI deployment
Second-order effects
Direct

Increased efficiency and performance for AI models, especially long-tail workloads.

Second

Reduced operational costs and faster iteration cycles for AI development and deployment.

Third

Further consolidation of AI capabilities among those who can effectively leverage LLM-driven compilers, widening the competitive gap.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

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Read at arXiv cs.LG
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