rust/src/librustc_metadata/rmeta/decoder.rs, branch master

mv compiler to compiler/

2020-08-30T15:45:07+00:00

rustc_metadata: Move some code around to merge impls of `CrateMetadataRef`

2020-08-22T18:38:56+00:00

Do not forget capacity when collecting def path hashes

2020-08-22T18:36:34+00:00

Lazy decoding of DefPathTable from crate metadata (non-incremental case)

2020-08-22T18:19:47+00:00

rust_ast::ast => rustc_ast

2020-08-17T20:32:32+00:00

replaced log with tracing

2020-08-15T20:03:11+00:00

Rework `rustc_serialize`

2020-08-14T16:34:30+00:00

- Move the type parameter from `encode` and `decode` methods to the trait. - Remove `UseSpecialized(En|De)codable` traits. - Remove blanket impls for references. - Add `RefDecodable` trait to allow deserializing to arena-allocated references safely. - Remove ability to (de)serialize HIR. - Create proc-macros `(Ty)?(En|De)codable` to help implement these new traits.

Eliminate the `SessionGlobals` from `librustc_ast`.

2020-08-08T02:03:42+00:00

By moving `{known,used}_attrs` from `SessionGlobals` to `Session`. This means they are accessed via the `Session`, rather than via TLS. A few `Attr` methods and `librustc_ast` functions are now methods of `Session`. All of this required passing a `Session` to lots of functions that didn't already have one. Some of these functions also had arguments removed, because those arguments could be accessed directly via the `Session` argument. `contains_feature_attr()` was dead, and is removed. Some functions were moved from `librustc_ast` elsewhere because they now need to access `Session`, which isn't available in that crate. - `entry_point_type()` --> `librustc_builtin_macros` - `global_allocator_spans()` --> `librustc_metadata` - `is_proc_macro_attr()` --> `Session`

Auto merge of #75008 - eddyb:rmeta-indexed-trait-impls, r=nikomatsakis

2020-08-06T03:23:57+00:00

rustc_metadata: track the simplified Self type for every trait impl. For the `traits_impls_of` query, we index the impls by `fast_reject::SimplifiedType` (a "shallow type"), which allows some simple cases like `impl Trait<..> for Foo<..>` to be efficiently iterated over, by e.g. `for_each_relevant_impl`. This PR encodes the `fast_reject::SimplifiedType` cross-crate to avoid needing to deserialize the `Self` type of every `impl` in order to simplify it - the simplification itself should be cheap, but the deserialization is less so. We could go further from here and make loading the list of impls lazy, for a given simplified `Self` type, but that would have more complicated implications for performance, and this PR doesn't do anything in that regard. r? @nikomatsakis cc @Mark-Simulacrum

mir: use `FiniteBitSet` in polymorphization

2020-08-04T17:30:53+00:00

This commit changes polymorphization to return a `FiniteBitSet` rather than a `FiniteBitSet` because most functions do not use anywhere near sixty-four generic parameters so keeping a `u64` around is unnecessary in most cases. Signed-off-by: David Wood