rustc Basics Purpose Guide agents through Rust compiler invocation: RUSTFLAGS, Cargo profile configuration, build modes, MIR and assembly inspection, monomorphization, and common compilation error patterns. Triggers - "How do I configure a release build in Rust for maximum performance?" - "How do I see the assembly output for a Rust function?" - "What is monomorphization and why is it making my compile slow?" - "How do I enable LTO in Rust?" - "My Rust binary is too large — how do I shrink it?" - "How do I read Rust MIR output?" Workflow 1. Choose a build mode 2. Cargo.toml profile configurat…