Xcode Compilation Analyzer

Use this skill when compile time, not just general project configuration, looks like the bottleneck.

Core Rules

• Start from evidence, ideally a recent .build-benchmark/ artifact or raw timing-summary output.
• Prefer analysis-only compiler flags over persistent project edits during investigation.
• Rank findings by expected wall-clock impact, not cumulative compile-time impact. When compile tasks are heavily parallelized (sum of compile categories >> wall-clock median), note that fixing individual hotspots may improve parallel efficiency without reducing build wait time.
• When the evidence points to parallelized work rather than serial bottlenecks, label recommendations as "Reduces compiler workload (parallel)" rather than "Reduces build time."
• Do not edit source or build settings without explicit developer approval.

What To Inspect