398 Commits

Author SHA1 Message Date
Aaron Turon
dacab06b4a Tag feature gates with issues
This commit adds issue numbers to the vast majority of active feature
gates. The few that are left without issues are rustc/runtime-internal
features that are essentially private APIs.

Closes #28244
2015-11-09 09:09:25 -08:00
Vadim Petrochenkov
e8ddbba2ed syntax/rustc_front: Simplify VariantData::fields
And use VariantData instead of P<VariantData> in Item_ and Variant_
2015-10-25 18:33:51 +03:00
Vadim Petrochenkov
40aa09e4c9 Merge struct fields and struct kind 2015-10-13 15:19:25 +03:00
Vadim Petrochenkov
30af54dede Dict -> Struct, StructDef -> VariantData, def -> data 2015-10-13 15:19:24 +03:00
Vadim Petrochenkov
8a12c19171 Test and gate empty structures and variants better 2015-10-13 15:19:20 +03:00
Vadim Petrochenkov
495566ee61 Decouple structure kinds from NodeIds 2015-10-13 15:19:17 +03:00
bors
87cd2c0827 Auto merge of #28861 - pnkfelix:fsk-nonparam-dropck-issue28498, r=arielb1
implement RFC 1238: nonparametric dropck.

cc #28498 

cc @nikomatsakis
2015-10-10 00:39:29 +00:00
bors
c14609035d Auto merge of #28857 - nrc:lowering, r=nikomatsakis
r? @nikomatsakis
2015-10-09 08:53:45 +00:00
bors
9f37fbc743 Auto merge of #28919 - huonw:placement-tracking-issue, r=alexcrichton
cc #28244
2015-10-09 02:57:38 +00:00
Huon Wilson
eacf78d8d4 Point placement_in_syntax/box_syntax lang features at tracking issue #27779.
cc #28244.
2015-10-09 10:11:04 +11:00
Nick Cameron
e0c74868c3 Fix stability 2015-10-09 11:53:41 +13:00
Cristi Cobzarenco
4b308b44e1 typos: fix a grabbag of typos all over the place 2015-10-08 19:49:31 +01:00
Felix S. Klock II
d778e57bf6 Add RFC 1238's unsafe_destructor_blind_to_params (UGEH) where needed.
I needed it in `RawVec`, `Vec`, and `TypedArena` for `rustc` to
bootstrap; but of course that alone was not sufficient for `make
check`.

Later I added `unsafe_destructor_blind_to_params` to collections, in
particular `LinkedList` and `RawTable` (the backing representation for
`HashMap` and `HashSet`), to get the regression tests exercising
cyclic structure from PR #27185 building.

----

Note that the feature is `dropck_parametricity` (which is not the same
as the attribute's name). We will almost certainly vary our strategy
here in the future, so it makes some sense to have a not-as-ugly name
for the feature gate. (The attribute name was deliberately selected to
be ugly looking.)
2015-10-06 14:16:49 +02:00
Felix S. Klock II
9868df2fd5 Non-parametric dropck; instead trust an unsafe attribute (RFC 1238).
Implement cannot-assume-parametricity (CAP) from RFC 1238, and add the
UGEH attribute.

----

Note that we check for the attribute attached to the dtor method, not
the Drop impl.

(This is just to match the specification of RFC and the tests; I am
not wedded to this approach.)
2015-10-06 14:16:20 +02:00
bors
2e88c36ebc Auto merge of #28642 - petrochenkov:name3, r=nrc
This PR removes random remaining `Ident`s outside of libsyntax and performs general cleanup
In particular, interfaces of `Name` and `Ident` are tidied up, `Name`s and `Ident`s being small `Copy` aggregates are always passed to functions by value, and `Ident`s are never used as keys in maps, because `Ident` comparisons are tricky.

Although this PR closes https://github.com/rust-lang/rust/issues/6993 there's still work related to it:
- `Name` can be made `NonZero` to compress numerous `Option<Name>`s and `Option<Ident>`s but it requires const unsafe functions.
- Implementation of `PartialEq` on `Ident` should be eliminated and replaced with explicit hygienic, non-hygienic or member-wise comparisons.
- Finally, large parts of AST can potentially be converted to `Name`s in the same way as HIR to clearly separate identifiers used in hygienic and non-hygienic contexts.

r? @nrc
2015-09-26 14:48:56 +00:00
bors
78ce46ffdd Auto merge of #28612 - gandro:targetvendor, r=alexcrichton
This adds a new target property, `target_vendor`. It is to be be used as a matcher for conditional compilation. The vendor is part of the [autoconf target triple](http://llvm.org/docs/doxygen/html/classllvm_1_1Triple.html#details): `<arch><sub>-<vendor>-<os>-<env>`. `arch`, `target_os` and `target_env` are already supported by Rust.

This change was suggested in PR #28593. It enables conditional compilation based on the vendor. This is needed for the rumprun target, which needs to match against both, target_os and target_vendor.

The default value for `target_vendor` is "unknown", "apple" and "pc" are other common values.

Matching against the `target_vendor` is introduced behind the feature gate `#![feature(cfg_target_vendor)]`.

This is the first time I messed around with rustc internals. I just added the my code where I found the existing `target_*` variables, hopefully I haven't missed anything. Please review with care. :)

r? @alexcrichton
2015-09-26 00:14:39 +00:00
Vadim Petrochenkov
f284cbc7af Cleanup interfaces of Name, SyntaxContext and Ident
Make sure Name, SyntaxContext and Ident are passed by value
Make sure Idents don't serve as keys (or parts of keys) in maps, Ident comparison is not well defined
2015-09-24 23:05:02 +03:00
Eduard Burtescu
f293ea28b4 Remove the deprecated box(PLACE) syntax. 2015-09-24 18:00:08 +03:00
Sebastian Wicki
af68cdfea1 rustc: Add target_vendor for target triples
This adds a new target property, `target_vendor` which can be used as a
matcher for conditional compilation. The vendor is part of the autoconf
target triple: <arch><sub>-<vendor>-<os>-<env>

The default value for `target_vendor` is "unknown".

Matching against the `target_vendor` with `#[cfg]` is currently feature
gated as `cfg_target_vendor`.
2015-09-24 01:44:55 +02:00
Andrew Paseltiner
85b8b447fa Replace ast::Mac_ enum with struct
Closes #28527.
2015-09-20 17:15:04 -04:00
Andrew Paseltiner
6fa0ff25bd Feature-gate #[no_debug] and #[omit_gdb_pretty_printer_section]
Closes #28091.
2015-09-19 19:39:25 -04:00
Jorge Aparicio
3ae3a5fc3c Overloaded augmented assignments 2015-09-18 21:20:15 -05:00
Vadim Petrochenkov
1eb42f1c78 Add feature gate 2015-09-18 15:28:01 +03:00
Björn Steinbrink
e4e67bd489 Add an attribute to mark function as unwinding 2015-09-13 23:42:40 +02:00
bors
d2a5b117c1 Auto merge of #28246 - huonw:lang-tracking-issues, r=alexcrichton
This is similar to the libs version, which allow an `issue` field in the
`#[unstable]` attribute.

cc #28244
2015-09-08 01:02:06 +00:00
Huon Wilson
31310f5b65 Allow tracking issues for lang features.
This is similar to the libs version, which allow an `issue` field in the
`#[unstable]` attribute.

cc #28244
2015-09-08 11:01:42 +10:00
Niko Matsakis
9bd35c07c2 add MIR code (unused thus far) 2015-09-06 07:27:23 -04:00
Nick Cameron
facdf2ebb1 Add an intital HIR and lowering step 2015-09-03 10:02:36 +12:00
bors
8f28c9b01e Auto merge of #28007 - Ms2ger:FnKind, r=nrc
There is no longer a need for that pattern, since enums are now qualified.
2015-08-31 01:09:40 +00:00
Jonas Schievink
4b571b055d Handle gateage of built-in attributes seperately
This allows marking attributes as whitelisted/crate-only independent of
their feature gate status.

Closes #24213
2015-08-29 11:37:40 +02:00
Ms2ger
2076cddcf2 Rename FnKind variants and stop re-exporting them from the visit module.
There is no longer a need for that pattern, since enums are now qualified.
2015-08-26 12:02:58 +02:00
Huon Wilson
bef1828d42 Rename simd_basics feature gate to repr_simd. 2015-08-17 14:41:39 -07:00
Huon Wilson
717da9513f Create "platform-intrinsic" ABI for SIMD/platform intrinsics.
This is purposely separate to the "rust-intrinsic" ABI, because these
intrinsics are theoretically going to become stable, and should be fine
to be independent of the compiler/language internals since they're
intimately to the platform.
2015-08-17 14:41:38 -07:00
Huon Wilson
e364f0eb5a feature gate cfg(target_feature).
This is theoretically a breaking change, but GitHub search turns up no
uses of it, and most non-built-in cfg's are passed via cargo features,
which look like `feature = "..."`, and hence can't overlap.
2015-08-17 14:41:37 -07:00
Huon Wilson
c8b6d5b23c Implement repr(simd) as an alias for #[simd]. 2015-08-17 10:57:18 -07:00
Alex Crichton
45bf1ed1a1 rustc: Allow changing the default allocator
This commit is an implementation of [RFC 1183][rfc] which allows swapping out
the default allocator on nightly Rust. No new stable surface area should be
added as a part of this commit.

[rfc]: https://github.com/rust-lang/rfcs/pull/1183

Two new attributes have been added to the compiler:

* `#![needs_allocator]` - this is used by liballoc (and likely only liballoc) to
  indicate that it requires an allocator crate to be in scope.
* `#![allocator]` - this is a indicator that the crate is an allocator which can
  satisfy the `needs_allocator` attribute above.

The ABI of the allocator crate is defined to be a set of symbols that implement
the standard Rust allocation/deallocation functions. The symbols are not
currently checked for exhaustiveness or typechecked. There are also a number of
restrictions on these crates:

* An allocator crate cannot transitively depend on a crate that is flagged as
  needing an allocator (e.g. allocator crates can't depend on liballoc).
* There can only be one explicitly linked allocator in a final image.
* If no allocator is explicitly requested one will be injected on behalf of the
  compiler. Binaries and Rust dylibs will use jemalloc by default where
  available and staticlibs/other dylibs will use the system allocator by
  default.

Two allocators are provided by the distribution by default, `alloc_system` and
`alloc_jemalloc` which operate as advertised.

Closes #27389
2015-08-14 15:13:10 -07:00
Alex Crichton
18607149fb syntax: Add a new unstable #[linked_from] attribute
To correctly reexport statically included libraries from a DLL on Windows, the
compiler will soon need to have knowledge about what symbols are statically
included and which are not. To solve this problem a new unstable
`#[linked_from]` attribute is being added and recognized on `extern` blocks to
indicate which native library the symbols are coming from.

The compiler then keeps track of what the set of FFI symbols are that are
included statically. This information will be used in a future commit to
configure how we invoke the linker on Windows.
2015-08-10 18:20:00 -07:00
bors
5aca49c693 Auto merge of #27338 - alexcrichton:remove-morestack, r=brson
This commit removes all morestack support from the compiler which entails:

* Segmented stacks are no longer emitted in codegen.
* We no longer build or distribute libmorestack.a
* The `stack_exhausted` lang item is no longer required

The only current use of the segmented stack support in LLVM is to detect stack
overflow. This is no longer really required, however, because we already have
guard pages for all threads and registered signal handlers watching for a
segfault on those pages (to print out a stack overflow message). Additionally,
major platforms (aka Windows) already don't use morestack.

This means that Rust is by default less likely to catch stack overflows because
if a function takes up more than one page of stack space it won't hit the guard
page. This is what the purpose of morestack was (to catch this case), but it's
better served with stack probes which have more cross platform support and no
runtime support necessary. Until LLVM supports this for all platform it looks
like morestack isn't really buying us much.

cc #16012 (still need stack probes)
Closes #26458 (a drive-by fix to help diagnostics on stack overflow)

r? @brson
2015-08-10 23:40:54 +00:00
Alex Crichton
7a3fdfbf67 Remove morestack support
This commit removes all morestack support from the compiler which entails:

* Segmented stacks are no longer emitted in codegen.
* We no longer build or distribute libmorestack.a
* The `stack_exhausted` lang item is no longer required

The only current use of the segmented stack support in LLVM is to detect stack
overflow. This is no longer really required, however, because we already have
guard pages for all threads and registered signal handlers watching for a
segfault on those pages (to print out a stack overflow message). Additionally,
major platforms (aka Windows) already don't use morestack.

This means that Rust is by default less likely to catch stack overflows because
if a function takes up more than one page of stack space it won't hit the guard
page. This is what the purpose of morestack was (to catch this case), but it's
better served with stack probes which have more cross platform support and no
runtime support necessary. Until LLVM supports this for all platform it looks
like morestack isn't really buying us much.

cc #16012 (still need stack probes)
Closes #26458 (a drive-by fix to help diagnostics on stack overflow)
2015-08-10 16:35:44 -07:00
bors
11deb083f5 Auto merge of #27296 - jroesch:type-macros, r=huonw
This pull request implements the functionality for [RFC 873](https://github.com/rust-lang/rfcs/blob/master/text/0873-type-macros.md). This is currently just an update of @freebroccolo's branch from January, the corresponding commits are linked in each commit message.

@nikomatsakis and I had talked about updating the macro language to support a lifetime fragment specifier, and it is possible to do that work on this branch as well. If so we can (collectively) talk about it next week during the pre-RustCamp work week.
2015-08-06 19:11:17 +00:00
Jared Roesch
2919e32686 Address final nits 2015-08-04 16:05:07 -07:00
Jared Roesch
15e7aa79f5 Add feature gate 2015-08-04 16:05:07 -07:00
Alex Crichton
5cccf3cd25 syntax: Implement #![no_core]
This commit is an implementation of [RFC 1184][rfc] which tweaks the behavior of
the `#![no_std]` attribute and adds a new `#![no_core]` attribute. The
`#![no_std]` attribute now injects `extern crate core` at the top of the crate
as well as the libcore prelude into all modules (in the same manner as the
standard library's prelude). The `#![no_core]` attribute disables both std and
core injection.

[rfc]: https://github.com/rust-lang/rfcs/pull/1184
2015-08-03 17:23:01 -07:00
Brian Anderson
a09bce1047 Feature gate associated type defaults
There are multiple issues with them as designed and implemented.

cc #27364
2015-07-29 15:11:07 -07:00
Brian Anderson
1c8194c477 Formatting 2015-07-29 10:31:07 -07:00
Oliver Schneider
00a5e66f81 remove get_ident and get_name, make as_str sound 2015-07-28 18:07:20 +02:00
Jared Roesch
5ad36cb887 Add omitted trailing comma 2015-07-25 21:22:38 -07:00
Jared Roesch
55621b6199 Add feature gate 2015-07-25 20:05:42 -07:00
Eli Friedman
742e1242d9 Add static_recursion feature gate. 2015-07-24 19:17:58 -07:00
Felix S. Klock II
b325e4f28e Add feature-gates for desugaring-based box and placement-in.
update test/compile-fail/feature-gate-box-expr.rs to reflect new feature gates.

Part of what lands with Issue 22181.
2015-07-22 15:33:59 +02:00