Change links to readmes

Author: mark-i-m

src/librustc/README.md

@@ -0,0 +1,3 @@
+For more information about how rustc works, see the [rustc guide].
+
+[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/

src/librustc/dep_graph/graph.rs

@@ -166,7 +166,7 @@ impl DepGraph {
     /// what state they have access to. In particular, we want to
     /// prevent implicit 'leaks' of tracked state into the task (which
     /// could then be read without generating correct edges in the
-    /// dep-graph -- see the module-level [README] for more details on
+    /// dep-graph -- see the [rustc guide] for more details on
     /// the dep-graph). To this end, the task function gets exactly two
     /// pieces of state: the context `cx` and an argument `arg`. Both
     /// of these bits of state must be of some type that implements
@@ -186,7 +186,7 @@ impl DepGraph {
     /// - If you need 3+ arguments, use a tuple for the
     ///   `arg` parameter.
     ///
-    /// [README]: https://github.com/rust-lang/rust/blob/master/src/librustc/dep_graph/README.md
+    /// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/incremental-compilation.html
     pub fn with_task<C, A, R, HCX>(&self,
                                    key: DepNode,
                                    cx: C,

src/librustc/hir/mod.rs

@@ -601,9 +601,9 @@ pub type CrateConfig = HirVec<P<MetaItem>>;
 /// The top-level data structure that stores the entire contents of
 /// the crate currently being compiled.
 ///
-/// For more details, see the module-level [README].
+/// For more details, see the [rustc guide].
 ///
-/// [README]: https://github.com/rust-lang/rust/blob/master/src/librustc/hir/README.md.
+/// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/hir.html
 #[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Debug)]
 pub struct Crate {
     pub module: Mod,

src/librustc/lib.rs

@@ -28,8 +28,9 @@
 //!   this code handles low-level equality and subtyping operations. The
 //!   type check pass in the compiler is found in the `librustc_typeck` crate.
 //!
-//! For a deeper explanation of how the compiler works and is
-//! organized, see the README.md file in this directory.
+//! For more information about how rustc works, see the [rustc guide].
+//!
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/
 //!
 //! # Note
 //!

src/librustc/traits/coherence.rs

@@ -8,7 +8,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! See `README.md` for high-level documentation
+//! See rustc guide chapters on [trait-resolution] and [trait-specialization] for more info on how
+//! this works.
+//!
+//! [trait-resolution]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html
+//! [trait-specialization]: https://rust-lang-nursery.github.io/rustc-guide/trait-specialization.html
 
 use hir::def_id::{DefId, LOCAL_CRATE};
 use syntax_pos::DUMMY_SP;

src/librustc/traits/mod.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Trait Resolution. See README.md for an overview of how this works.
+//! Trait Resolution. See [rustc guide] for more info on how this works.
+//!
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html
 
 pub use self::SelectionError::*;
 pub use self::FulfillmentErrorCode::*;

src/librustc/traits/select.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! See `README.md` for high-level documentation
+//! See [rustc guide] for more info on how this works.
+//!
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html#selection
 
 use self::SelectionCandidate::*;
 use self::EvaluationResult::*;
@@ -1025,8 +1027,9 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
     //
     // The selection process begins by examining all in-scope impls,
     // caller obligations, and so forth and assembling a list of
-    // candidates. See `README.md` and the `Candidate` type for more
-    // details.
+    // candidates. See [rustc guide] for more details.
+    //
+    // [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html#candidate-assembly
 
     fn candidate_from_obligation<'o>(&mut self,
                                      stack: &TraitObligationStack<'o, 'tcx>)
@@ -2312,7 +2315,9 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
     //
     // Confirmation unifies the output type parameters of the trait
     // with the values found in the obligation, possibly yielding a
-    // type error.  See `README.md` for more details.
+    // type error.  See [rustc guide] for more details.
+    //
+    // [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html#confirmation
 
     fn confirm_candidate(&mut self,
                          obligation: &TraitObligation<'tcx>,

src/librustc/ty/context.rs

@@ -779,9 +779,9 @@ impl<'tcx> CommonTypes<'tcx> {
 /// The central data structure of the compiler. It stores references
 /// to the various **arenas** and also houses the results of the
 /// various **compiler queries** that have been performed. See the
-/// module-level [README] for more details.
+/// [rustc guide] for more details.
 ///
-/// [README]: https://github.com/rust-lang/rust/blob/master/src/librustc/ty/README.md
+/// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/ty.html
 #[derive(Copy, Clone)]
 pub struct TyCtxt<'a, 'gcx: 'a+'tcx, 'tcx: 'a> {
     gcx: &'a GlobalCtxt<'gcx>,