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Commit a6f2d67

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Merge pull request #2441 from rust-lang/tshepang-remove-title-case
use consistent title capitalization
2 parents 6966390 + 1f2bdb5 commit a6f2d67

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-28
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‎src/SUMMARY.md‎

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- [Significant changes and quirks](./solve/significant-changes.md)
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- [`Unsize` and `CoerceUnsized` traits](./traits/unsize.md)
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- [Type checking](./type-checking.md)
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- [Method Lookup](./method-lookup.md)
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- [Method lookup](./method-lookup.md)
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- [Variance](./variance.md)
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- [Coherence checking](./coherence.md)
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- [Opaque types](./opaque-types-type-alias-impl-trait.md)
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- [Inference details](./opaque-types-impl-trait-inference.md)
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- [Return Position Impl Trait In Trait](./return-position-impl-trait-in-trait.md)
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- [Region inference restrictions][opaque-infer]
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- [Const condition checking](./effects.md)
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- [Pattern and Exhaustiveness Checking](./pat-exhaustive-checking.md)
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- [Pattern and exhaustiveness checking](./pat-exhaustive-checking.md)
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- [Unsafety checking](./unsafety-checking.md)
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- [MIR dataflow](./mir/dataflow.md)
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- [Drop elaboration](./mir/drop-elaboration.md)
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- [Closure capture inference](./closure.md)
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- [Async closures/"coroutine-closures"](coroutine-closures.md)
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# MIR to Binaries
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# MIR to binaries
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- [Prologue](./part-5-intro.md)
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- [MIR optimizations](./mir/optimizations.md)
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- [Interpreter](./const-eval/interpret.md)
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- [Monomorphization](./backend/monomorph.md)
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- [Lowering MIR](./backend/lowering-mir.md)
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- [Code Generation](./backend/codegen.md)
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- [Code generation](./backend/codegen.md)
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- [Updating LLVM](./backend/updating-llvm.md)
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- [Debugging LLVM](./backend/debugging.md)
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- [Backend Agnostic Codegen](./backend/backend-agnostic.md)
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- [Implicit Caller Location](./backend/implicit-caller-location.md)
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- [Libraries and Metadata](./backend/libs-and-metadata.md)
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- [Profile-guided Optimization](./profile-guided-optimization.md)
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- [LLVM Source-Based Code Coverage](./llvm-coverage-instrumentation.md)
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- [Sanitizers Support](./sanitizers.md)
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- [Implicit caller location](./backend/implicit-caller-location.md)
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- [Libraries and metadata](./backend/libs-and-metadata.md)
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- [Profile-guided optimization](./profile-guided-optimization.md)
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- [LLVM source-based code coverage](./llvm-coverage-instrumentation.md)
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- [Sanitizers support](./sanitizers.md)
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- [Debugging support in the Rust compiler](./debugging-support-in-rustc.md)
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‎src/backend/implicit-caller-location.md‎

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# Implicit Caller Location
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# Implicit caller location
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<!-- toc -->
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[`caller_location`][intrinsic] intrinsic, and the stabilization-friendly
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[`core::panic::Location::caller`][wrapper] wrapper.
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## Motivating Example
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## Motivating example
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Take this example program:
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of `core::panic::Location::caller` and a number of `#[track_caller]` annotations in the standard
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library which propagate caller information.
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## Reading Caller Location
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## Reading caller location
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Previously, `panic!` made use of the `file!()`, `line!()`, and `column!()` macros to construct a
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[`Location`] pointing to where the panic occurred. These macros couldn't be given an overridden
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[`caller_location`][intrinsic] compiler intrinsic implemented by rustc. This intrinsic is easiest
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explained in terms of how it works in a `const` context.
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## Caller Location in `const`
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## Caller location in `const`
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There are two main phases to returning the caller location in a const context: walking up the stack
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to find the right location and allocating a const value to return.
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}
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```
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### Dynamic Dispatch
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### Dynamic dispatch
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In codegen contexts we have to modify the callee ABI to pass this information down the stack, but
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the attribute expressly does *not* modify the type of the function. The ABI change must be
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> whether we'll be called in a const context (safe to ignore shim) or in a codegen context (unsafe
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> to ignore shim). Even if we did know, the results from const and codegen contexts must agree.
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## The Attribute
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## The attribute
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The `#[track_caller]` attribute is checked alongside other codegen attributes to ensure the
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function:

‎src/backend/libs-and-metadata.md‎

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# Libraries and Metadata
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# Libraries and metadata
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When the compiler sees a reference to an external crate, it needs to load some
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information about that crate. This chapter gives an overview of that process,

‎src/llvm-coverage-instrumentation.md‎

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# LLVM Source-Based Code Coverage
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# LLVM source-based code coverage
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<!-- toc -->
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‎src/part-5-intro.md‎

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# From MIR to Binaries
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# From MIR to binaries
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All of the preceding chapters of this guide have one thing in common:
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we never generated any executable machine code at all!

‎src/pat-exhaustive-checking.md‎

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# Pattern and Exhaustiveness Checking
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# Pattern and exhaustiveness checking
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In Rust, pattern matching and bindings have a few very helpful properties. The
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compiler will check that bindings are irrefutable when made and that match arms

‎src/profile-guided-optimization.md‎

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# Profile Guided Optimization
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# Profile-guided optimization
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<!-- toc -->
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`rustc` supports doing profile-guided optimization (PGO).
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This chapter describes what PGO is and how the support for it is
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## What Is Profiled-Guided Optimization?
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## What is profiled-guided optimization?
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The basic concept of PGO is to collect data about the typical execution of
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[`-C instrument-coverage`](./llvm-coverage-instrumentation.md), but using these
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coverage results for PGO has not been attempted at this time.
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### Overall Workflow
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### Overall workflow
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Generating a PGO-optimized program involves the following four steps:
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### Compile-Time Aspects
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### Compile-time aspects
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Depending on which step in the above workflow we are in, two different things
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#### Create Binaries with Instrumentation
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#### Create binaries with instrumentation
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As mentioned above, the profiling instrumentation is added by LLVM.
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`rustc` instructs LLVM to do so [by setting the appropriate][pgo-gen-passmanager]
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#### Compile Binaries Where Optimizations Make Use Of Profiling Data
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#### Compile binaries where optimizations make use of profiling data
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### Runtime aspects
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## Additional Information
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## Additional information
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Clang's documentation contains a good overview on [PGO in LLVM][llvm-pgo].
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‎src/sanitizers.md‎

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# Sanitizers Support
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# Sanitizers support
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The rustc compiler contains support for following sanitizers:
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