Rollup of 4 pull requests #128428
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Rollup of 4 pull requests #128428
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…d in import When encountering a name in an import that could have come from a crate that wasn't imported, use a structured suggestion to suggest `extern crate foo;` pointing at the right place in the crate. When encountering `_` in an import, do not suggest `extern crate _;`. ``` error[E0432]: unresolved import `spam` --> $DIR/import-from-missing-star-3.rs:2:9 | LL | use spam::*; | ^^^^ maybe a missing crate `spam`? | help: consider importing the `spam` crate | LL + extern crate spam; | ```
remove an unused boolean and then merge two big matches into one
Since LLVM <https://reviews.llvm.org/D99439> (4c7f820, "Update @llvm.powi to handle different int sizes for the exponent"), the size of the integer can be specified for the `powi` intrinsic. Make use of this so it is more obvious that integer size is consistent across all float types. This feature is available since LLVM 13 (October 2021). Based on bootstrap we currently support >= 17.0, so there should be no support problems.
These already exist in the compiler. Expose them in core so we can add their library functions.
This adds missing functions for math operations on the new float types. Platform support is pretty spotty at this point, since even platforms with generally good support can be missing math functions. `std/build.rs` is updated to reflect this.
`min`, `max`, and similar functions require external math routines. Add these under the same gates as `std` math functions (`reliable_f16_math` and `reliable_f128_math`).
Clarify what makes some operations not safe, and correct comment in the
default branch ("not safe" -> "safe").
Due to a LLVM bug, `f128` math functions link successfully but LLVM chooses the wrong symbols (`long double` symbols rather than those for binary128). Since this is a notable problem that may surprise a number of users, add a note about it. Link: llvm/llvm-project#44744
…etrochenkov Structured suggestion for `extern crate foo` when `foo` isn't resolved in import When encountering a name in an import that could have come from a crate that wasn't imported, use a structured suggestion to suggest `extern crate foo;` pointing at the right place in the crate. When encountering `_` in an import, do not suggest `extern crate _;`. ``` error[E0432]: unresolved import `spam` --> $DIR/import-from-missing-star-3.rs:2:9 | LL | use spam::*; | ^^^^ maybe a missing crate `spam`? | help: consider importing the `spam` crate | LL + extern crate spam; | ```
Cleanup sys module to match house style This moves a test file out of sys as it's just testing std types. Also cleans up some assorted bits including making the `use` statements match the house style.
…errors Attribute checking simplifications remove an unused boolean and then merge two big matches into one I was reviewing some attributes and realized we don't really check this list against the list of builtin attributes, so we "may" totally be missing some attributes that we should be checking (like the `coroutine` attribute, which you can just apply to random stuff) ```rust #![feature(coroutines)] #[coroutine] struct Foo; ``` just compiles for example. Unless we check that the fallthrough match arm is never reached for builtin attributes, we're just going to keep forgetting to add them here, too. I can do that without the changes in this PR, but it seemed like a nice cleanup
Add `f16` and `f128` math functions This adds intrinsics and math functions for `f16` and `f128` floating point types. Support is quite limited and some things are broken so tests don't run on many platforms, but this provides a starting point.
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…iaskrgr Rollup of 4 pull requests Successful merges: - rust-lang#128151 (Structured suggestion for `extern crate foo` when `foo` isn't resolved in import) - rust-lang#128162 (Cleanup sys module to match house style) - rust-lang#128402 (Attribute checking simplifications) - rust-lang#128417 (Add `f16` and `f128` math functions) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
extern crate foowhenfooisn't resolved in import #128151 (Structured suggestion forextern crate foowhenfooisn't resolved in import)f16andf128math functions #128417 (Addf16andf128math functions)r? @ghost
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