axiom-swift-performance

Analyze Swift performance bottlenecks and apply language-level optimizations.

Updated Dec 23, 2025
One-click install
npx skills add https://github.com/pradeepmouli/swift-template --skill axiom-swift-performance-pradeepmouli
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: axiom-swift-performance
Source: https://github.com/pradeepmouli/swift-template/tree/main/.agents/skills/axiom-swift-performance
Command: npx skills add https://github.com/pradeepmouli/swift-template --skill axiom-swift-performance-pradeepmouli

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Optimize Swift performance by applying language-level insights into value semantics, ARC behavior, COW, and memory layout to reduce allocations and accelerate hot paths.

Core Features & Use Cases

  • Profiling-driven optimizations for Swift code to identify bottlenecks in allocations, copies, and hot paths.
  • Guidance on memory management and generics specialization to lower ARC overhead and improve data layout.
  • Practical patterns for choosing between value and reference semantics, inlining, and Span-based access in real-world apps.

Quick Start

Analyze a Swift project to identify bottlenecks and apply language-level optimizations to reduce ARC overhead, improve COW behavior, and speed up hot paths.

Frequently Asked Questions about axiom-swift-performance

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I reduce ARC overhead and memory allocations in Swift?▼

Reduce Swift ARC overhead and allocations by analyzing value semantics, applying copy-on-write patterns, and optimizing memory layout to minimize retain-release cycles on hot paths.

What's the best way to optimize Swift generics for performance?▼

Optimize Swift generics performance by enforcing generics specialization, which removes dynamic dispatch overhead and allows the compiler to inline functions for faster memory layout access.

How does copy-on-write behavior impact Swift performance?▼

Copy-on-write behavior impacts Swift performance by deferring value copies until mutation occurs, reducing memory allocations and accelerating hot paths when passing large value types across functions.

When should I choose value vs reference semantics in Swift?▼

Choose value semantics in Swift to avoid ARC overhead and ensure thread safety, while reference semantics suits shared mutable state where copy-on-write optimization is not applicable.

Can I use Span-based access to speed up Swift hot paths?▼

Span-based access accelerates Swift hot paths by providing a contiguous, bounds-checked memory view without copying, reducing allocation overhead and improving data layout efficiency.

Does this approach to Swift performance work with Swift 6.2+ features?▼

Yes, the Swift performance analysis approach applies Swift 6.2+ features, modern memory-model concepts, and best-practice patterns like COW optimization and inlining across apps and libraries.