bors [Tue, 2 May 2017 01:04:27 +0000 (01:04 +0000)]
Auto merge of #40851 - oli-obk:multisugg, r=jonathandturner
Minimize single span suggestions into a label
changes
```
14 | println!("☃{}", tup[0]);
| ^^^^^^
|
help: to access tuple elements, use tuple indexing syntax as shown
| println!("☃{}", tup.0);
```
into
```
14 | println!("☃{}", tup[0]);
| ^^^^^^ to access tuple elements, use `tup.0`
```
Also makes suggestions explicit in the backend in preparation of adding multiple suggestions to a single diagnostic. Currently that's already possible, but results in a full help message + modified code snippet per suggestion, and has no rate limit (might show 100+ suggestions).
bors [Mon, 1 May 2017 17:23:09 +0000 (17:23 +0000)]
Auto merge of #41560 - alevy:rwpi-ropi, r=eddyb
Add RWPI/ROPI relocation model support
This PR adds support for using LLVM 4's ROPI and RWPI relocation models for ARM.
ROPI (Read-Only Position Independence) and RWPI (Read-Write Position Independence) are two new relocation models in LLVM for the ARM backend ([LLVM changset](https://reviews.llvm.org/rL278015)). The motivation is that these are the specific strategies we use in userspace [Tock](https://www.tockos.org) apps, so supporting this is an important step (perhaps the final step, but can't confirm yet) in enabling userspace Rust processes.
## Explanation
ROPI makes all code and immutable accesses PC relative, but not assumed to be overriden at runtime (so for example, jumps are always relative).
RWPI uses a base register (`r9`) that stores the addresses of the GOT in memory so the runtime (e.g. a kernel) only adjusts r9 tell running code where the GOT is.
## Complications adding support in Rust
While this landed in LLVM master back in August, the header files in `llvm-c` have not been updated yet to reflect it. Rust replicates that header file's version of the `LLVMRelocMode` enum as the Rust enum `llvm::RelocMode` and uses an implicit cast in the ffi to translate from Rust's notion of the relocation model to the LLVM library's notion.
My workaround for this currently is to replace the `LLVMRelocMode` argument to `LLVMTargetMachineRef` with an int and using the hardcoded int representation of the `RelocMode` enum. This is A Bad Idea(tm), but I think very nearly the right thing.
Would a better alternative be to patch rust-llvm to support these enum variants (also a fairly trivial change)?
bors [Mon, 1 May 2017 09:48:09 +0000 (09:48 +0000)]
Auto merge of #41666 - nagisa:try-poking-bigendian-again, r=arielb1
Try fixing bigendian metadata serialisation
I compiled this on PPC to check and it seems to work, but not sure whether I didn't mess up
anything in a major way.
Maybe a good shot at #41443
The easiest way to *really* test this is to land the patch (a high priority would be good, since I quite literally am just twiddling my thumbs on this now), wait for nightly, and, if the nightly works, backport this to beta.
Auto merge of #41602 - hsivonen:explainnonnull, r=steveklabnik
Explain why zero-length slices require a non-null pointer
In reference to [a thread on Discourse](https://users.rust-lang.org/t/why-does-std-slice-from-raw-parts-require-a-non-null-pointer-for-zero-length-slices/10534), explain why `from_raw_parts` requires a non-null pointer for zero-length slices.
Rollup merge of #41613 - cuviper:fix-release-links, r=aturon
Fix links in RELEASES.md for 1.10.0 through 1.12.0
Many links in this series have the `[link text]` and `(url)` on separate
lines, which doesn't get correctly interpreted in markdown. Or maybe it
once did, but it doesn't now. This patch joins the lines together.
Rollup merge of #41608 - cuviper:distcheck-rust-src, r=alexcrichton
Add a distcheck for rust-src completeness
This is for the last commit of #41546. For some reason, @bors only saw the first two commits, and wouldn't approve the last even when explicitly directed so.
Rollup merge of #41509 - froydnj:float-stack-reduction, r=nagisa
reduce stack requirements for floating-point formatting
Doing this speeds up float formatting by ~10% or so, and also makes the formatting code more suitable for embedded environments where stack space is at a premium.
This is a quick draft to start working on [#41351](https://github.com/rust-lang/rust/issues/41351).
I don't think I got the stable attributes correct, but it is good enuf to start a conversation.
Auto merge of #41544 - alexcrichton:bump-bootstrap, r=brson
Update stage0 bootstrap compiler
We've got a freshly minted beta compiler, let's update to use that on nightly!
This has a few other changes associated with it as well
* A bump to the rustc version number (to 1.19.0)
* Movement of the `cargo` and `rls` submodules to their "proper" location in
`src/tools/{cargo,rls}`. Now that Cargo workspaces support the `exclude`
option this can work.
* Updates of the `cargo` and `rls` submodules to their master branches.
* Tweak to the `src/stage0.txt` format to be more amenable for Cargo version
numbers. On the beta channel Cargo will bootstrap from a different version
than rustc (e.g. the version numbers are different), so we need different
configuration for this.
* Addition of `dev` as a readable key in the `src/stage0.txt` format. If present
then stage0 compilers are downloaded from `dev-static.rust-lang.org` instead
of `static.rust-lang.org`. This is added to accomodate our updated release
process with Travis and AppVeyor.
Alex Crichton [Thu, 20 Apr 2017 21:32:54 +0000 (14:32 -0700)]
Update stage0 bootstrap compiler
We've got a freshly minted beta compiler, let's update to use that on nightly!
This has a few other changes associated with it as well
* A bump to the rustc version number (to 1.19.0)
* Movement of the `cargo` and `rls` submodules to their "proper" location in
`src/tools/{cargo,rls}`. Now that Cargo workspaces support the `exclude`
option this can work.
* Updates of the `cargo` and `rls` submodules to their master branches.
* Tweak to the `src/stage0.txt` format to be more amenable for Cargo version
numbers. On the beta channel Cargo will bootstrap from a different version
than rustc (e.g. the version numbers are different), so we need different
configuration for this.
* Addition of `dev` as a readable key in the `src/stage0.txt` format. If present
then stage0 compilers are downloaded from `dev-static.rust-lang.org` instead
of `static.rust-lang.org`. This is added to accomodate our updated release
process with Travis and AppVeyor.
Auto merge of #39291 - Freyskeyd:check_context_E0423, r=petrochenkov
Checker:: Execute levenshtein before other context checking
As explain [here]() i think it's better to check for a miss typing before checking context dependent help.
```rust
struct Handle {}
struct Something {
handle: Handle
}
fn main() {
let handle: Handle = Handle {};
let s: Something = Something {
// Checker detect an error and propose a solution with `Handle { /* ... */ }`
// but it's a miss typing of `handle`
handle: Handle
};
}
```
Auto merge of #41564 - gaurikholkar:master, r=nikomatsakis
Disable ref hint for pattern in let and adding ui tests #40402
A fix to #40402
The `to prevent move, use ref e or ref mut e ` has been disabled.
```
fn main() {
let v = vec![String::from("oh no")];
let e = v[0];
}
```
now gives
```
error[E0507]: cannot move out of indexed content
--> example.rs:4:13
|
4 | let e = v[0];
| ^^^^ cannot move out of indexed content
error: aborting due to previous error
```
I have added ui tests for the same and also modified a compile-fail test.
Amit Aryeh Levy [Fri, 28 Apr 2017 22:21:59 +0000 (17:21 -0500)]
Added LLVMRustRelocMode
Replaces the llvm-c exposed LLVMRelocMode, which does not include all
relocation model variants, with a LLVMRustRelocMode modeled after
LLVMRustCodeMode.
This was originally implemented in https://github.com/rust-lang/rust/pull/40043, then reverted, then there was some [agreement](https://github.com/rust-lang/rust/issues/39318#issuecomment-289108720) that it should be supported.
(This is hopefully the last PR related to bound parsing.)
The comments for flt2dec::to_shortest_str says that we only need a slice
of length 5 for the parts array. Initializing a 16-part array is just
wasted effort and wasted stack space. Other functions in the flt2dec
module have similar comments, so we adjust the parts arrays passed to
those functions accordingly.
fmt: reduce the stack space required by float formatting
For the two major entry points for float formatting, we split the exact
case and the shortest cases into separate functions. We mark the
separate functions as #[inline(never) so the exact cases won't bloat
stack space in their callers unnecessarily. The shortest cases are
marked so for similar reasons.
num: add minimal benchmarks for full floating-point formatting
We have benchmarks for the floating-point formatting algorithms
themselves, but not for the surrounding machinery like Formatter and
translating to the flt2dec::Part slices.
Josh Stone [Fri, 28 Apr 2017 19:11:33 +0000 (12:11 -0700)]
Fix links in RELEASES.md for 1.10.0 through 1.12.0
Many links in this series have the `[link text]` and `(url)` on separate
lines, which doesn't get correctly interpreted in markdown. Or maybe it
once did, but it doesn't now. This patch joins the lines together.
Auto merge of #41368 - nikomatsakis:incr-comp-dep-tracking-map, r=eddyb
make *most* maps private
Currently we access the `DepTrackingMap` fields directly rather than using the query accessors. This seems bad. This branch removes several such uses, but not all, and extends the macro so that queries can hide their maps (so we can prevent regressions). The extension to the macro is kind of ugly :/ but couldn't find a simple way to do it otherwise (I guess I could use a nested macro...). Anyway I figure it's only temporary.
Auto merge of #41575 - alexcrichton:android-qemu-server, r=TimNN
travis: Parallelize tests on Android
Currently our slowest test suite on android, run-pass, takes over 5 times longer
than the x86_64 component (~400 -> ~2200s). Typically QEMU emulation does indeed
add overhead, but not 5x for this kind of workload. One of the slowest parts of
the Android process is that *compilation* happens serially. Tests themselves
need to run single-threaded on the emulator (due to how the test harness works)
and this forces the compiles themselves to be single threaded.
Now Travis gives us more than one core per machine, so it'd be much better if we
could take advantage of them! The emulator itself is still fundamentally
single-threaded, but we should see a nice speedup by sending binaries for it to
run much more quickly.
It turns out that we've already got all the toos to do this in-tree. The
qemu-test-{server,client} that are in use for the ARM Linux testing are a
perfect match for the Android emulator. This commit migrates the custom adb
management code in compiletest/rustbuild to the same qemu-test-{server,client}
implementation that ARM Linux uses.
This allows us to lift the parallelism restriction on the compiletest test
suites, namely run-pass. Consequently although we'll still basically run the
tests themselves in single threaded mode we'll be able to compile all of them in
parallel, keeping the pipeline much more full hopefully and using more cores for
the work at hand. Additionally the architecture here should be a bit speedier as
it should have less overhead than adb which is a whole new process on both the
host and the emulator!
Locally on an 8 core machine I've seen the run-pass test suite speed up from
taking nearly an hour to only taking 5 minutes. I don't think we'll see quite a
drastic speedup on Travis but I'm hoping this change can place the Android tests
well below 2 hours instead of just above 2 hours.
Because the client/server here are now repurposed for more than just QEMU,
they've been renamed to `remote-test-{server,client}`.
Note that this PR does not currently modify how debuginfo tests are executed on
Android. While parallelizable it wouldn't be quite as easy, so that's left to
another day. Thankfull that test suite is much smaller than the run-pass test
suite.
Niko Matsakis [Fri, 28 Apr 2017 13:52:56 +0000 (09:52 -0400)]
introduce ability to if we have typeck-tables for a given def-id
And use this in save-analysis, which used to read the map directly.
This is an attempt to sidestep the failure occuring on homu that I
cannot reproduce.
Auto merge of #41508 - michaelwoerister:generic-path-remapping, r=alexcrichton
Implement a file-path remapping feature in support of debuginfo and reproducible builds
This PR adds the `-Zremap-path-prefix-from`/`-Zremap-path-prefix-to` commandline option pair and is a more general implementation of #41419. As opposed to the previous attempt, this implementation should enable reproducible builds regardless of the working directory of the compiler.
This implementation of the feature is more general in the sense that the re-mapping will affect *all* paths the compiler emits, including the ones in error messages.
Niko Matsakis [Tue, 18 Apr 2017 15:50:21 +0000 (11:50 -0400)]
make `ty` and `impl_trait_ref` private
This requires copying out the cycle error to avoid a cyclic borrow. Is
this a problem? Are there paths where we expect cycles to arise and not
result in errors? (In such cases, we could add a faster way to test for
cycle.)
Rollup merge of #41571 - alexcrichton:fix-windows-mingw, r=brson
windows: Copy libwinpthread-1.dll into libdir bin
Recently we switched from the win32 MinGW toolchain to the pthreads-based
toolchain. We ship `gcc.exe` from this toolchain with the `rust-mingw` package
in the standard distribution but the pthreads version of `gcc.exe` depends on
`libwinpthread-1.dll`. While we're shipping this DLL for the compiler to depend
on we're not shipping it for gcc. As a workaround just copy the dll to gcc.exe
location and don't attempt to share for now.
cc https://github.com/rust-lang/rust/issues/31840#issuecomment-297478538
Alex Crichton [Wed, 26 Apr 2017 15:52:19 +0000 (08:52 -0700)]
travis: Parallelize tests on Android
Currently our slowest test suite on android, run-pass, takes over 5 times longer
than the x86_64 component (~400 -> ~2200s). Typically QEMU emulation does indeed
add overhead, but not 5x for this kind of workload. One of the slowest parts of
the Android process is that *compilation* happens serially. Tests themselves
need to run single-threaded on the emulator (due to how the test harness works)
and this forces the compiles themselves to be single threaded.
Now Travis gives us more than one core per machine, so it'd be much better if we
could take advantage of them! The emulator itself is still fundamentally
single-threaded, but we should see a nice speedup by sending binaries for it to
run much more quickly.
It turns out that we've already got all the tools to do this in-tree. The
qemu-test-{server,client} that are in use for the ARM Linux testing are a
perfect match for the Android emulator. This commit migrates the custom adb
management code in compiletest/rustbuild to the same qemu-test-{server,client}
implementation that ARM Linux uses.
This allows us to lift the parallelism restriction on the compiletest test
suites, namely run-pass. Consequently although we'll still basically run the
tests themselves in single threaded mode we'll be able to compile all of them in
parallel, keeping the pipeline much more full and using more cores for the work
at hand. Additionally the architecture here should be a bit speedier as it
should have less overhead than adb which is a whole new process on both the host
and the emulator!
Locally on an 8 core machine I've seen the run-pass test suite speed up from
taking nearly an hour to only taking 6 minutes. I don't think we'll see quite a
drastic speedup on Travis but I'm hoping this change can place the Android tests
well below 2 hours instead of just above 2 hours.
Because the client/server here are now repurposed for more than just QEMU,
they've been renamed to `remote-test-{server,client}`.
Note that this PR does not currently modify how debuginfo tests are executed on
Android. While parallelizable it wouldn't be quite as easy, so that's left to
another day. Thankfully that test suite is much smaller than the run-pass test
suite.
As a final fix I discovered that the ARM and Android test suites were actually
running all library unit tests (e.g. stdtest, coretest, etc) twice. I've
corrected that to only run tests once which should also give a nice boost in
overall cycle time here.
Rollup merge of #41578 - arielb1:missing-adjustment, r=eddyb
typeck: resolve type vars before calling `try_index_step`
`try_index_step` does not resolve type variables by itself and would
fail otherwise. Also harden the failure path in `confirm` to cause less
confusing errors.
r? @eddyb
Fixes #41498.
beta-nominating because regression (caused by #41279).
Auto merge of #41447 - alexcrichton:sccache-everywhere, r=brson
appveyor: Use Ninja/sccache on MSVC
Now that the final bug fixes have been merged into sccache we can start
leveraging sccache on the MSVC builders on AppVeyor instead of relying on the
ad-hoc caching strategy of trigger files and whatnot.
Alex Crichton [Sat, 25 Feb 2017 17:53:46 +0000 (09:53 -0800)]
appveyor: Use Ninja/sccache on MSVC
Now that the final bug fixes have been merged into sccache we can start
leveraging sccache on the MSVC builders on AppVeyor instead of relying on the
ad-hoc caching strategy of trigger files and whatnot.
typeck: resolve type vars before calling `try_index_step`
`try_index_step` does not resolve type variables by itself and would
fail otherwise. Also harden the failure path in `confirm` to cause less
confusing errors.
Auto merge of #37860 - giannicic:defaultimpl, r=nagisa
#37653 support `default impl` for specialization
this commit implements the first step of the `default impl` feature:
> all items in a `default impl` are (implicitly) `default` and hence
> specializable.
In order to test this feature I've copied all the tests provided for the
`default` method implementation (in run-pass/specialization and
compile-fail/specialization directories) and moved the `default` keyword
from the item to the impl.
See [referenced](https://github.com/rust-lang/rust/issues/37653) issue for further info
Alex Crichton [Thu, 27 Apr 2017 01:35:01 +0000 (18:35 -0700)]
windows: Copy libwinpthread-1.dll into libdir bin
Recently we switched from the win32 MinGW toolchain to the pthreads-based
toolchain. We ship `gcc.exe` from this toolchain with the `rust-mingw` package
in the standard distribution but the pthreads version of `gcc.exe` depends on
`libwinpthread-1.dll`. While we're shipping this DLL for the compiler to depend
on we're not shipping it for gcc. As a workaround just copy the dll to gcc.exe
location and don't attempt to share for now.
cc https://github.com/rust-lang/rust/issues/31840#issuecomment-297478538
Rollup merge of #41546 - cuviper:reduced-rust-src, r=alexcrichton
Shrink the rust-src component
Before this change, the installable rust-src component had essentially the same contents as the rustc-src dist tarball, just additionally wrapped in a rust-installer. As discussed on [internals], rust-src is only meant to support uses for the standard library, so it doesn't really need the rest of the compiler sources.
Now rust-src only contains libstd and its path dependencies, which roughly matches the set of crates that have rust-analysis data. The result is **significantly** smaller, from 36MB to 1.3MB compressed, and from 247MB to 8.5MB uncompressed.
Rollup merge of #41524 - michaelwu:basic-hexagon, r=alexcrichton
Add Hexagon support
This requires an updated LLVM with https://reviews.llvm.org/D31999 and https://reviews.llvm.org/D32000 to build libcore.
A basic hello world builds and runs successfully on the hexagon simulator. libcore is fine with LLVM fixes, but libstd requires a lot more work since there's a custom rtos running on most hexagon cores. Running Linux sounds possible though, so maybe getting linux + musl going would be easier.
Here's the target file I've been using for testing
```
{
"arch": "hexagon",
"llvm-target": "hexagon-unknown-elf",
"os": "none",
"target-endian": "little",
"target-pointer-width": "32",
projects / rust.git / log