asm-performance

What problem does it solve?

This Skill provides a systematic workflow to identify and fix performance bottlenecks in compiler-generated assembly code, leading to faster and more efficient software.

Core Features & Use Cases

• Assembly Auditing: Scans assembly code for common performance anti-patterns like bounds check failures, register spills, and missed vectorization opportunities.
• Iterative Optimization: Guides users through making single, measurable changes to source code or compiler hints to improve performance.
• Performance Measurement: Integrates with tools like perf stat and llvm-mca to quantify performance gains.
• Use Case: A developer notices a critical function in their Rust application is slow after profiling. They use this Skill to examine the generated assembly, identify a missed vectorization opportunity, apply an optimization hint, and confirm a significant performance improvement.

Quick Start

Use the asm-performance skill to audit the assembly for the function my_crate::hot_function after collecting its assembly output.