pgo

What problem does it solve?

This Skill helps you significantly improve the runtime performance of your C/C++ applications by guiding the compiler to make better optimization decisions based on actual program usage.

Core Features & Use Cases

• Profile-Guided Optimization (PGO): Implement a two-stage build process where the first stage collects runtime profile data, and the second stage uses this data to optimize the binary more effectively than standard compiler flags.
• GCC & Clang Support: Provides workflows for both major C/C++ compilers.
• BOLT Integration: Offers post-link optimization using BOLT for further performance gains by reordering code based on profile data.
• Use Case: You have a critical C++ application that has hit performance plateaus with -O3. Using PGO, you can achieve an additional 5-15% speedup by training the compiler on representative workloads.

Quick Start

Use the pgo skill to build an optimized C++ binary using GCC and profile data.