Compiler Explorer

🚀 Compiler Explorer MCP

A Model Context Protocol (MCP) server that connects Large Language Models (LLMs) to the Compiler Explorer API, enabling them to compile code, explore compiler features, and analyze optimizations across different compilers and languages.

🚀 Quick Start

Example Questions

Here are some interesting questions you can ask using this MCP:

Compiler Feature Exploration

• "What was the earliest GCC version to support the #embed directive?"
• "Can you show how different versions of Clang handle C++20 modules?"
• "What optimization flags are available in Clang 12 but not in Clang 11?"
• "Can you demonstrate how MSVC and GCC handle C++20 coroutines respectively?"

Optimization Analysis

• "What are the differences in assembly code between -O2 and -O3 in GCC 13?"
• "How does Clang's vectorization compare to GCC's in basic matrix multiplication?"
• "Can you show the impact of different optimization levels on tail call optimization?"
• "What effect does -ffast-math have on this floating-point intensive computation?"

Language Feature Support

• "Which C++20 features are supported by the latest GCC, Clang, and MSVC?"
• "Can you show how different compilers implement the memory layout of std::optional?"
• "Compare how GCC and Clang handle C++20 constexpr virtual functions."
• "Demonstrate the differences between Intel and GCC compilers in automatic vectorization of SIMD operations."

Assembly Deep Dive

• "What is the most efficient way to implement bit population count in x86 assembly for different CPU architectures?"
• "Can you show how different compilers optimize a simple string reversal function (using -O3)?"
• "Compare the assembly implementation of virtual function calls and ordinary function calls."
• "How do different compilers implement the type switching of std::variant in assembly?"

Cross-Language Comparison

• "Compare the assembly code generated by the same algorithm in C++, Rust, and Go."
• "What are the differences in the generated code between C++ and Rust in terms of exception handling mechanisms?"
• "Show the overhead comparison between Rust bounds checking and unchecked C++ array access."
• "Compare the efficiency differences between C++ and D in implementing RAII (through assembly)."

Performance Investigation

• "What are the differences between C++'s std::sort and a handwritten quicksort at the assembly level?"
• "What is the efficiency comparison of different string concatenation methods in terms of instruction generation?"
• "Compare the efficiency of std::map and std::unordered_map operations in assembly."
• "How do different smart pointer implementations affect inlining and code size?"