swift-performance-analyzer

Scans Swift code for performance anti-patterns that cause slowdowns and excessive allocations.

When to Use

Auditing Swift code for performance issues
Finding unnecessary copies and ARC overhead
Detecting unspecialized generics
Identifying collection inefficiencies
Finding actor isolation costs
Checking memory layout issues

What It Detects

Unnecessary copies — Value types copied when reference would suffice
ARC overhead — Excessive retain/release cycles
Unspecialized generics — Generic code not optimized for specific types
Collection inefficiencies — Suboptimal collection usage patterns
Actor isolation costs — Expensive actor hop patterns
Memory layout issues — Poor struct packing, excessive padding

Example Triggers

"Check my Swift code for performance issues"
"Audit my code for optimization opportunities"
"I'm seeing excessive memory allocations"
"Review my Swift performance anti-patterns"
"Check if I'm using COW correctly"

swift-performance — Swift performance optimization patterns
swiftui-performance — SwiftUI-specific performance issues
memory-debugging — Memory leak diagnosis