Get rid of bounds check in slice::chunks_exact() and related function…
…s during construction
LLVM can't figure out in
let rem = self.len() % chunk_size;
let len = self.len() - rem;
let (fst, snd) = self.split_at(len);
and
let rem = self.len() % chunk_size;
let (fst, snd) = self.split_at(rem);
that the index passed to split_at() is smaller than the slice length and
adds a bounds check plus panic for it.
Apart from removing the overhead of the bounds check this also allows
LLVM to optimize code around the ChunksExact iterator better.
`parse_stream_from_source_str` is a more stable API to convert a
string into a bunch of tokens, and it also catches errors about
mismatched parenthesis.
Rollup of 5 pull requests
Successful merges:
- #75938 (Added some `min_const_generics` revisions into `const_generics` tests)
- #76050 (Remove unused function)
- #76075 (datastructures: replace `once_cell` crate with an impl from std)
- #76115 (Restore public visibility on some parsing functions for rustfmt)
- #76127 (rustbuild: Remove one LLD workaround)
Failed merges:
r? @ghost
Restore public visibility on some parsing functions for rustfmt
In #74826 the visibility of several parsing functions was reduced. However, rustfmt is an external consumer of some of these functions as well and needs the visibility to be public, similar to other elements in rustc_parse such as `parse_ident`
db534b3ac2/src/librustc_parse/parser/mod.rs (L433-L436)
Update MinGW instructions to include ninja
Rust now requires `ninja` to build, so the MinGW build instructions are updated to reflect this.
Like for `python` and `cmake`, the `mingw-w64-x86_64-ninja` package should be used. The default package from the `msys2` subsystem doesn't handle paths correctly on windows.
GH-66816: Remove disable attr before return
Passing --disable-per-crate-search removes the create search inputs so moved code around so that the search input is enabled
first before the function returns.
Fixes#66816
This commit changes `uncached_llvm_type` so that a named struct type
(with an empty name) is always created when the `fewer_names` option
is enabled. By skipping the generation of names, we can improve perf.
Giving `LLVMStructCreateNamed` an empty name works because LLVM will
perform random renames to avoid collisions.
Signed-off-by: David Wood <david@davidtw.co>
Use intra-doc links for `core/src/slice.mod.rs`
partial help in #75080
r? @jyn514
- most are using primitive types links, which cannot be used with intra links at the moment
- also `std` cannot be referenced in any link, `std::ptr::NonNull` and `std::slice` could not be referenced
ty: remove obsolete pretty printer
Fixes#61139.
This PR removes the obsolete printer and replaces all uses of it with `FmtPrinter`. Of the replaced uses, all but one use was in `debug!` logging, two cases were notable:
- `MonoItem::to_string` is used in `-Z print-mono-items` and therefore affects the output of all codegen-units tests (which have been updated).
- `DefPathBasedNames` was used in `librustc_codegen_llvm/type_of.rs` with `LLVMStructCreateNamed` and that'll now get different values, but nothing will break as a result of this.
cc @eddyb (whom I've discussed this with)
Add `-Z proc-macro-backtrace` to allow showing proc-macro panics
Fixes#75050
Previously, we would unconditionally suppress the panic hook during
proc-macro execution. This commit adds a new flag
`-Z proc-macro-backtrace`, which allows running the panic hook for
easier debugging.
Constify the following methods of `std::net::Ipv4Addr`:
- `octets`
- `is_loopback`
- `is_private`
- `is_link_local`
- `is_shared`
- `is_ietf_protocol_assignment`
- `is_benchmarking`
- `is_multicast`
- `is_documentation`
Also insta-stabilizes these methods as const.
Possible because of the stabilization of const integer arithmetic and control flow.
Fixes#75050
Previously, we would unconditionally suppress the panic hook during
proc-macro execution. This commit adds a new flag
-Z proc-macro-backtrace, which allows running the panic hook for
easier debugging.
Constify the following methods of `alloc::borrow::Cow`:
- `is_borrowed`
- `is_owned`
These methods are still unstable under `cow_is_borrowed`.
Possible because of #49146 (Allow if and match in constants).
Tracking issue: #65143
Make some Ordering methods const
Constify the following methods of `core::cmp::Ordering`:
- `reverse`
- `then`
Possible because of #49146 (Allow `if` and `match` in constants).
Tracking issue: #76113
Added the `mingw-w64-x86_64-ninja` package to the build guide for MinGW, as well as a note not to use the `ninja` package from the `msys2` subsystem (doesn't handle paths correctly on windows).
