This defines the following intrinsics for 128 and 256 bit vectors of f32
and f64:
* `fmadd`
* `fmaddsub`
* `fmsub`
* `fmsubadd`
* `fnmadd`
* `fnmsub`
The `_sd` and `_ss` variants are not included yet.
Intel intrinsic reference: https://software.intel.com/en-us/node/523929
The intrinsics there are listed under AVX2, but in the Intel Intrinsic
Guide they are part of the "FMA" technology, and LLVM puts them under
FMA, not AVX2.
Adding -Wno-error is more reliable and simple than trying to modify existing
flags. We've been using this in Debian already for the past few releases.
Making this change also encourages future maintainers towards "best practises".
Also take the opportunity to use the same method at all places in the file.
If `v` were a type with some kind of indirection, so that `v += 1` would
have an effect even if `v` were not used anymore, the unused_assignments lint
would mark a false positive.
This exempts overloaded (non-primitive) assign ops from being treated as
assignments (they are method calls).
The previous compile-fail tests that ensure x += 1 can trigger for
primitive types continue to pass. Added a representative test for the
"view" indirection.
Right now there's just a smattering of `// ignore-foo` platforms which is ever
expanding as new ones are added. Instead switch to only running these tests on
Linux/OSX and then use a guaranteed-to-work but not-as-well-tested alternative
on other platforms.
Similarly to #31629 where an i586-unknown-linux-gnu target was added, there is
sometimes a desire to compile for x86 Windows as well where SSE2 is disabled.
This commit mirrors the i586-unknown-linux-gnu target and simply adds a variant
for Windows as well.
This is motivated by a recent [Gecko bug][ff] where crashes were seen on 32-bit
Windows due to users having CPUs that don't support SSE2 instructions. It was
requested that we could have non-SSE2 builds of the standard library available
so they could continue to use vanilla releases and nightlies.
[ff]: https://bugzilla.mozilla.org/show_bug.cgi?id=1253202
- Empty `.sidebar .location` caused "grey line" on top of the documentation page (under 700px) fixed.
- `.sidebar .location` appearance improvement in responsive mode.
This PR changes the search paths for macro-expanded non-inline modules so that they match ordinary non-inline modules (fixes#31624). This is a [breaking-change].
Right now, the search paths for a macro-expanded non-inline module are computed as if the module were declared in the top level of the file in which the macro was defined.
For example, consider `./foo/mod.rs`:
```rust
mod inconsequential { // moving the macro outside this module wouldn't change anything
macro_rules! mod_decl {
($i:ident) => { mod $i; }
}
}
```
and `./lib.rs`:
```rust
mod foo;
mod bar {
mod_decl!(baz);
//^ Now, rustc expects `./foo/baz.rs` (or `./foo/baz/mod.rs`)
//| After this PR, rustc will expect `./bar/baz.rs` (or `./bar/baz/mod.rs`)
}
```
r? @alexcrichton
