Avoid unnecessary allocas for indirect function arguments
The extra alloca was only necessary because it made LLVM implicitly
handle the necessary deref to get to the actual value. The same happens
for indirect arguments that have the byval attribute. But the Rust ABI
does not use the byval attribute and so we need to manually add the
deref operation to the debuginfo.
The extra alloca was only necessary because it made LLVM implicitly
handle the necessary deref to get to the actual value. The same happens
for indirect arguments that have the byval attribute. But the Rust ABI
does not use the byval attribute and so we need to manually add the
deref operation to the debuginfo.
remove or encapsulate the remaining non-query data in tcx
I wound up removing the existing cache around inhabitedness since it didn't seem to be adding much value. I reworked const rvalue promotion, but not that much (i.e., I did not split the computation into bits, as @eddyb had tossed out as a suggestion). But it's now demand driven, at least.
cc @michaelwoerister -- see the `forbid_reads` change in last commit
r? @eddyb -- since the trickiest of this PR is the work on const rvalue promotion
cc #44137
Update array documentation for Clone trait changes
Just a note, for this to work, `T` doesn't have to `Copy`, `Clone` is sufficient. For instance, the following works.
```rust
fn x(a: &[String; 100]) -> [String; 100] {
a.clone()
}
```
ci: Update Travis OSX builders
Looks like Travis [has announced][blog] that our current `xcode8.2` image is
being deprecated and the recommended Xcode 7 image is `xcode7.3`. This updates
us to these ahead of time to make sure we can shake out any bugs, if any.
[blog]: https://blog.travis-ci.com/2017-10-16-a-new-default-os-x-image-is-coming
don't issue "expected statement after outer attr." after inner attr.
While an inner attribute here is in fact erroneous, that error ("inner
attribute is not permitted in this context") successfully gets set earlier;
this further admonition is nonsensical.
Resolves#45296.
Add the test for #40003.
I checked that the test failed to compile on an older nightly (I tried 2017-09-29) and that it compiles against master.
Closes#40003.
core: derive Clone for result::IntoIter
It appears to be a simple oversight that `result::IntoIter<T>` doesn't
implement `Clone` (where `T: Clone`). We do already have `Clone` for
`result::Iter`, as well as the similar `option::IntoIter` and `Iter`.
Add more __future__ imports to increase compatibility with Python 3 in bootstrap
The functionality of the `__future__` imports are described [here](https://docs.python.org/3/library/__future__.html).
These will help ensure the bootstrap code stays compatible with Python 3. If changes are made in the future that use absolute imports, division, or the `print` function, this will be ensure that running it under Python 2 will pass or fail the same way as Python 3.
`Option` is made a [new-style class](https://docs.python.org/2/reference/datamodel.html#new-style-and-classic-classes), so that it behaves the same way in Python 2 and 3.
The `__future__ unicode_literals` import is not used, because that can change the semantics of the code in Python 2 in unwanted ways. For more information see [this article](http://python-future.org/unicode_literals.html).
The cache was broken anyhow and this computation doesn't look that
expensive. These public accessors could potentially become queries,
but we'd have to add some more complex logic around lift. I'd prefer
to have some test cases to profile with before doing that.
Fixes#44402.
#44493 add structure for inferred_outlives_of
#44493
- add placeholder for the final implementation of inferred_outlives_of
- add some placeholder tests
rustbuild: Allow setting rls/rustfmt to "broken"
This commit enables configuring the RLS/rustfmt tools to the "broken" state and
actually get it past CI. The main changes here were to update all dist-related
code to handle the situation where the RLS isn't available. This in turn
involved a homegrown preprocessor-like-function to edit the configuration files
we pass to the various combined installer tools.
This commit enables configuring the RLS/rustfmt tools to the "broken" state and
actually get it past CI. The main changes here were to update all dist-related
code to handle the situation where the RLS isn't available. This in turn
involved a homegrown preprocessor-like-function to edit the configuration files
we pass to the various combined installer tools.
rustc: Handle #[inline(always)] at -O0
This commit updates the handling of `#[inline(always)]` functions at -O0 to
ensure that it's always inlined regardless of the number of codegen units used.
Closes#45201
Looks like Travis [has announced][blog] that our current `xcode8.2` image is
being deprecated and the recommended Xcode 7 image is `xcode7.3`. This updates
us to these ahead of time to make sure we can shake out any bugs, if any.
[blog]: https://blog.travis-ci.com/2017-10-16-a-new-default-os-x-image-is-coming
Add "Buidling on *nix" sub-header
Since there is a "Build on Windows" section, a simple sub-header here would help Windows users to know they need to keep reading.
Check namespaces when resolving associated items in typeck
Closes#35600Closes#44247
Fixes a "cannot move a value of type..." error in the same case as #44247 but with the associated items swapped.
