1. Getting Started
  2. About this guide
  6. Building and debugging rustc
  7. How to build and run the compiler
    ❱
    1. Quickstart
    2. Prerequisites
    3. Suggested workflows
    4. Distribution artifacts
    5. Building documentation
    6. Rustdoc overview
    7. Adding a new target
    8. Optimized build
  8. Testing the compiler
    ❱
    1. Running tests
      ❱
      1. Testing with Docker
      2. Testing with CI
    2. Adding new tests
    3. Best practices
    4. Compiletest
      ❱
      1. UI tests
      2. Test directives
      3. Minicore
    5. Ecosystem testing
      ❱
      1. Crater
      2. Fuchsia
      3. Rust for Linux
    6. Codegen backend testing
      ❱
      1. Cranelift codegen backend
      2. GCC codegen backend
    7. Performance testing
    8. Misc info
  9. Debugging the compiler
    ❱
    1. Using the tracing/logging instrumentation
  10. Profiling the compiler
    ❱
    1. with the linux perf tool
    2. with Windows Performance Analyzer
    3. with the Rust benchmark suite
  11. crates.io dependencies
  13. Contributing to Rust
  14. Contribution procedures
  15. About the compiler team
  16. Using Git
  17. Mastering @rustbot
  18. Walkthrough: a typical contribution
  19. Implementing new language features
  20. Stability guarantees
  21. Stability attributes
  22. Stabilizing language features
    ❱
    1. Stabilization report template
  23. Feature Gates
  24. Coding conventions
  25. Procedures for breaking changes
  26. Using external repositories
  27. Fuzzing
  28. Notification groups
    ❱
    1. Apple
    2. ARM
    3. Emscripten
    4. Fuchsia
    5. RISC-V
    6. Rust for Linux
    7. WASI
    8. WebAssembly
    9. Windows
  29. Licenses
  30. Editions
  32. Bootstrapping
  33. Prologue
  34. What Bootstrapping does
  35. How Bootstrap does it
  36. Writing tools in Bootstrap
  37. Debugging bootstrap
  38. cfg(bootstrap) in dependencies
  40. High-level Compiler Architecture
  41. Prologue
  42. Overview of the compiler
  43. The compiler source code
  44. Queries: demand-driven compilation
    ❱
    1. The Query Evaluation Model in detail
    2. Incremental compilation
    3. Incremental compilation in detail
    4. Debugging and testing
    5. Salsa
  45. Memory management in rustc
  46. Serialization in rustc
  47. Parallel compilation
  48. Rustdoc internals
    ❱
    1. Search
    2. The rustdoc test suite
    3. The rustdoc-gui test suite
    4. The rustdoc-json test suite
  49. GPU offload internals
    ❱
    1. Installation
    2. Usage
  50. Autodiff internals
    ❱
    1. Installation
    2. How to debug
    3. Autodiff flags
    4. Type Trees
  52. Source Code Representation
  53. Prologue
  54. Syntax and the AST
    ❱
    1. Lexing and parsing
    2. Macro expansion
    3. Name resolution
    4. Attributes
    5. #[test] implementation
    6. Panic implementation
    7. AST validation
    8. Feature gate checking
    9. Lang Items
  55. The HIR (High-level IR)
    ❱
    1. Lowering AST to HIR
    2. Ambig/Unambig Types and Consts
    3. Debugging
  56. The THIR (Typed High-level IR)
  57. The MIR (Mid-level IR)
    ❱
    1. MIR construction
    2. MIR visitor and traversal
    3. MIR queries and passes: getting the MIR
  58. Inline assembly
  60. Supporting Infrastructure
  61. Command-line arguments
  62. rustc_driver and rustc_interface
    ❱
    1. Remarks on perma-unstable features
    2. Example: Type checking
    3. Example: Getting diagnostics
  63. Errors and lints
    ❱
    1. Diagnostic and subdiagnostic structs
    2. Translation
    3. LintStore
    4. Error codes
    5. Diagnostic items
    6. ErrorGuaranteed
  65. Analysis
  66. Prologue
  67. Generic parameter definitions
    ❱
    1. EarlyBinder and instantiating parameters
  68. Binders and Higher ranked regions
    ❱
    1. Instantiating binders
  69. Early vs Late bound parameters
  70. The ty module: representing types
    ❱
    1. ADTs and Generic Arguments
    2. Parameter types/consts/regions
  71. TypeFolder and TypeFoldable
  72. Aliases and Normalization
  73. Typing/Param Envs
  74. Type inference
  75. Trait solving
    ❱
    1. Higher-ranked trait bounds
    2. Caching subtleties
    3. Implied bounds
    4. Specialization
    5. Chalk-based trait solving
      ❱
      1. Lowering to logic
      2. Goals and clauses
      3. Canonical queries
      4. Canonicalization
    6. Next-gen trait solving
      ❱
      1. Invariants of the type system
      2. The solver
      3. Candidate preference
      4. Canonicalization
      5. Coinduction
      6. Caching
      7. Proof trees
      8. Opaque types
      9. Significant changes and quirks
    7. Unsize and CoerceUnsized traits
  76. Variance
  77. Coherence checking
  78. HIR Type checking
    ❱
    1. Coercions
    2. Method lookup
  79. Opaque types
    ❱
    1. Inference details
    2. Return Position Impl Trait In Trait
    3. Region inference restrictions
  80. Const condition checking
  81. Pattern and exhaustiveness checking
  82. Unsafety checking
  83. MIR dataflow
  84. Drop elaboration
  85. The borrow checker
    ❱
    1. Tracking moves and initialization
      ❱
      1. Move paths
    2. MIR type checker
    3. Drop check
    4. Region inference
      ❱
      1. Constraint propagation
      2. Lifetime parameters
      3. Member constraints
      4. Placeholders and universes
      5. Closure constraints
      6. Error reporting
    5. Two-phase-borrows
  86. Closure capture inference
  87. Async closures/"coroutine-closures"
  89. MIR to binaries
  90. Prologue
  91. MIR optimizations
  92. Debugging MIR
  93. Constant evaluation
    ❱
    1. Interpreter
  94. Monomorphization
  95. Lowering MIR
  96. Code generation
    ❱
    1. Updating LLVM
    2. Debugging LLVM
    3. Backend Agnostic Codegen
    4. Implicit caller location
  97. Libraries and metadata
  98. Profile-guided optimization
  99. LLVM source-based code coverage
  100. Sanitizers support
  101. Debugging support in the Rust compiler
  104. Appendix A: Background topics
  105. Appendix B: Glossary
  106. Appendix C: Code Index
  107. Appendix D: Compiler Lecture Series
  108. Appendix E: Bibliography
  109. Appendix Z: HumorRust