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adds simd_select intrinsic
The select SIMD intrinsic is used to select elements from two SIMD vectors using a mask:
```rust
let mask = b8x4::new(true, false, false, true);
let a = f32x4::new(1., 2., 3., 4.);
let b = f32x4::new(5., 6., 7., 8.);
assert_eq!(simd_select(mask, a, b), f32x4::new(1., 6., 7., 4.));
```
The number of lanes between the mask and the vectors must match, but the vector width of the mask does not need to match that of the vectors. The mask is required to be a vector of signed integers.
Note: this intrinsic will be exposed via `std::simd`'s vector masks - users are not expected to use it directly.
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Stabilize the copy_closures and clone_closures features
In addition to the `Fn*` family of traits, closures now implement `Copy` (and similarly `Clone`) if all of the captures do.
Tracking issue: https://github.com/rust-lang/rust/issues/44490
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Make resuming generators unsafe instead of the creation of immovable generators
cc @withoutboats
Fixes #47787
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Stabilize termination_trait, split out termination_trait_test
For #48453.
First time contribution, so I'd really appreciate any feedback on how this PR can be better.
Not sure exactly what kind of documentation update is needed. If there is no PR to update the reference, I can try doing that this week as I have time.
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NLL should identify and respect the lifetime annotations that the user wrote
Part of #47184.
r? @nikomatsakis
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Command: Support posix_spawn() on FreeBSD/OSX/GNU Linux
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Add 12 num::NonZero* types for primitive integers, deprecate core::nonzero
RFC: https://github.com/rust-lang/rfcs/pull/2307
Tracking issue: ~~https://github.com/rust-lang/rust/issues/27730~~ https://github.com/rust-lang/rust/issues/49137
Fixes https://github.com/rust-lang/rust/issues/27730
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In addition to the `Fn*` family of traits, closures now implement `Copy` (and similarly `Clone`) if all of the captures do.
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Fix the conversion between bit representations and i128 representations
fixes #49181
the `Discr` type now encodes the bit representation instead of `i128` or `u128` casted to `u128`.
r? @eddyb
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address some FIXME whose associated issues were marked as closed
part of #44366
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Deprecate the AsciiExt trait in favor of inherent methods
The trait and some of its methods are stable and will remain.
Some of the newer methods are unstable and can be removed later.
Fixes https://github.com/rust-lang/rust/issues/39658
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The trait and some of its methods are stable and will remain.
Some of the newer methods are unstable and can be removed later.
Fixes https://github.com/rust-lang/rust/issues/39658
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generators. Fixes #47787
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Merge `feature(advanced_slice_patterns)` into `feature(slice_patterns)`
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This stabilizes `main` with non-() return types; see #48453.
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Try to reduce amount of time on the asmjs builder
This PR has two commits for two separate strategies:
* First it disables optimizations for all tests, hopefully saving time by not optimizing the test code. This caused a number of run-pass tests to fail which are switched to being ignored here.
* Next it disables a number of test suites which aren't asm.js specific and already run elsewhere
cc #48826
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add intrinsics for portable packed simd vector reductions
Adds the following portable vector reduction intrinsics:
* fn simd_reduce_add<T, U>(x: T) -> U;
* fn simd_reduce_mul<T, U>(x: T) -> U;
* fn simd_reduce_min<T, U>(x: T) -> U;
* fn simd_reduce_max<T, U>(x: T) -> U;
* fn simd_reduce_and<T, U>(x: T) -> U;
* fn simd_reduce_or<T, U>(x: T) -> U;
* fn simd_reduce_xor<T, U>(x: T) -> U;
I've also added:
* fn simd_reduce_all<T>(x: T) -> bool;
* fn simd_reduce_any<T>(x: T) -> bool;
These produce better code that what we are currently producing in `stdsimd`, but the code is still not optimal due to this LLVM bug: https://bugs.llvm.org/show_bug.cgi?id=36702
r? @alexcrichton
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Since all tests are compiled with LTO effectively in Emscripten this commit
disables optimizations to hopefully squeeze some more time out of the CI
builders.
Closes #48826
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Make `assert` a built-in procedural macro
Makes `assert` macro a built-in one without touching its functionality. This is a prerequisite for RFC 2011 (#44838).
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check stability of macro invocations
I haven't implemented tests yet but this should be a pretty solid prototype. I think as-implemented it will also stability-check macro invocations in the same crate, dunno if we want that or not.
I don't know if we want this to go through `rustc::middle::stability` or not, considering the information there wouldn't be available at the time of macro expansion (even for external crates, right?).
r? @nrc
closes #34079
cc @petrochenkov @durka @jseyfried #38356
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Rollup of 17 pull requests
- Successful merges: #48706, #48875, #48892, #48922, #48957, #48959, #48961, #48965, #49007, #49024, #49042, #49050, #48853, #48990, #49037, #49049, #48972
- Failed merges:
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MIPS testsuite fixes
This PR adjusts various bits in the testsuite so that more stuff passes on mips*.
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They are disallowed because they have different precedence than
expressions. I assume parenthesis in pattern will be soon stabilized and
thus write that as suggestion directly.
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Stabilize `match 2 { 1..=3 => {} }`.
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Stabilize the syntax `a..=b` and `..=b`.
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Stabilize std::ops::RangeInclusive and std::ops::RangeInclusiveTo.
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Payload of `Literal` token must be escaped.
Also print printable non-ASCII characters.
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Remove the coerce_never lint and make the behaviour an error.
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Replace feature(never_type) with feature(exhaustive_patterns).
feature(exhaustive_patterns) only covers the pattern-exhaustives checks
that used to be covered by feature(never_type)
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