[docs] Update docs to point to the docs.rs website;

cranelift/docs/conf.py

@@ -59,7 +59,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'cranelift'
-copyright = u'2018, Cranelift Developers'
+copyright = u'2019, Cranelift Developers'
 author = u'Cranelift Developers'
 
 # The version info for the project you're documenting, acts as replacement for

cranelift/docs/index.rst

@@ -15,11 +15,19 @@ Contents:
 Rust Crate Documentation
 ========================
 
-`cranelift <https://docs.rs/cranelift/>`_
+`cranelift <https://docs.rs/cranelift-codegen/>`_
+    This is an umbrella crate that re-exports the codegen and frontend crates,
+    to make them easier to use.
+
+`cranelift-codegen <https://docs.rs/cranelift-codegen/>`_
     This is the core code generator crate. It takes Cranelift IR as input
     and emits encoded machine instructions, along with symbolic relocations,
     as output.
 
+`cranelift-codegen-meta <https://docs.rs/cranelift-codegen-meta/>`_
+    This crate contains the meta-language utilities and descriptions used by the
+    code generator.
+
 `cranelift-wasm <https://docs.rs/cranelift-wasm/>`_
     This crate translates WebAssembly code into Cranelift IR.
 

cranelift/docs/ir.rst

@@ -5,6 +5,13 @@ Cranelift IR Reference
 .. default-domain:: clif
 .. highlight:: clif
 
+.. todo:: Update the IR reference
+
+   This document is likely to be outdated and missing some important
+   information. It is recommended to look at the list of instructions as
+   documented in the `InstBuilder` documentation:
+   https://docs.rs/cranelift-codegen/latest/cranelift_codegen/ir/trait.InstBuilder.html
+
 The Cranelift intermediate representation (:term:`IR`) has two primary forms:
 an *in-memory data structure* that the code generator library is using, and a
 *text format* which is used for test cases and debug output.

cranelift/docs/meta.rst

@@ -7,8 +7,15 @@ Cranelift Meta Language Reference
 .. module:: cdsl
 
 The Cranelift meta language is used to define instructions for Cranelift. It is a
-domain specific language embedded in Python. This document describes the Python
-modules that form the embedded DSL.
+domain specific language embedded in Rust.
+
+.. todo:: Point to the Rust documentation of the meta crate here.
+
+   This document is very out-of-date. Instead, you can have a look at the
+   work-in-progress documentation of the `meta` crate there:
+   https://docs.rs/cranelift-codegen-meta/0.34.0/cranelift_codegen_meta/.
+
+This document describes the Python modules that form the embedded DSL.
 
 The meta language descriptions are Python modules under the
 :file:`cranelift-codegen/meta-python` directory. The descriptions are processed in two