No more target.target
Two main changes of this PR:
* Turn `target_pointer_width` into an integer and rename to `pointer_width`.
The compiler only allowed three valid values for the width anyways.
An integer is more natural for this value, and saves a few allocations
and copies.
* Remove the `rustc_session::config::Config` wrapper and replace it with
its inner member `Target`. Aka. no more `target.target`. This makes life so
much easier, but it also causes a ton of downstream breakage.
Some changes of this PR were done using tooling. These tooling-made changes
were isolated to their own commits to make review easier.
It's best to review the PR commit-by-commit.
Miri PR: https://github.com/rust-lang/miri/pull/1583
I request p=10 bors priority because of the breakage.
The wrapper type led to tons of target.target
across the compiler. Its ptr_width field isn't
required any more, as target_pointer_width
is already present in parsed form.
Preparation for a subsequent change that replaces
rustc_target::config::Config with its wrapped Target.
On its own, this commit breaks the build. I don't like making
build-breaking commits, but in this instance I believe that it
makes review easier, as the "real" changes of this PR can be
seen much more easily.
Result of running:
find compiler/ -type f -exec sed -i -e 's/target\.target\([)\.,; ]\)/target\1/g' {} \;
find compiler/ -type f -exec sed -i -e 's/target\.target$/target/g' {} \;
find compiler/ -type f -exec sed -i -e 's/target.ptr_width/target.pointer_width/g' {} \;
./x.py fmt
Rename target_pointer_width to pointer_width because it is already
member of the Target struct.
The compiler supports only three valid values for target_pointer_width:
16, 32, 64. Thus it can safely be turned into an int.
This means less allocations and clones as well as easier handling of the type.
Also change target_pointer_width to pointer_width.
Preparation for a subsequent type change of
target_pointer_width to an integer together with a rename
to pointer_width.
On its own, this commit breaks the build. I don't like making
build-breaking commits, but in this instance I believe that it
makes review easier, as the "real" changes of this PR can be
seen much more easily.
Result of running:
find compiler/rustc_target/src/spec/ -type f -exec sed -i -e 's/target_pointer_width: "\(.*\)"\..*,/pointer_width: \1,/g' {} \;
Replace tuple of infer vars for upvar_tys with single infer var
This commit allows us to decide the number of captures required after
completing capture ananysis, which is required as part of implementing
RFC-2229.
closes https://github.com/rust-lang/project-rfc-2229/issues/4
r? `@nikomatsakis`
Detect configuration for LLVM during setup
This is a first draft to address #77579, setting `download-ci-llvm` to true on Linux, but I could also implement the `if-available` setting mentioned in the issue.
On other platforms I was thinking about using [the which crate](https://crates.io/crates/which), if adding a dependency on it is considered okay of course, to detect the presence of `llvm-config` in the path, and use it if found. Still a work in progress of course.
Update books
## reference
5 commits in 56a13c082ee90736c08d6abdcd90462517b703d3..1b78182e71709169dc0f1c3acdc4541b6860e1c4
2020-09-14 23:20:16 -0700 to 2020-10-11 13:53:47 -0700
- Specify that SSE4.1 includes SSSE3 instead of SSE3 (rust-lang-nursery/reference#892)
- Fix mutable expressions that can be dereferenced (rust-lang-nursery/reference#890)
- Fix grammar in memory model (rust-lang-nursery/reference#889)
- Add style checks. (rust-lang-nursery/reference#886)
- Add description for LUB Coercion (rust-lang-nursery/reference#808)
## book
1 commits in cb28dee95e5e50b793e6ba9291c5d1568d3ad72e..451a1e30f2dd137aa04e142414eafb8d05f87f84
2020-09-09 10:06:00 -0500 to 2020-10-05 09:11:18 -0500
- clarify description of when ? can be used (rust-lang/book#2471)
## rust-by-example
1 commits in 7d3ff1c12db08a847a57a054be4a7951ce532d2d..152475937a8d8a1f508d8eeb57db79139bc803d9
2020-09-28 15:54:25 -0300 to 2020-10-09 09:29:50 -0300
- Add 1.45.0 cast documentation (rust-lang/rust-by-example#1384)
## embedded-book
2 commits in dd310616308e01f6cf227f46347b744aa56b77d9..79ab7776929c66db83203397958fa7037d5d9a30
2020-09-26 08:54:08 +0000 to 2020-10-12 08:00:05 +0000
- llvm-objdump: Use two hyphens in flags to objdump (rust-embedded/book#270)
- Start/hardware: clarify which file needs tweaking (rust-embedded/book#266)
Provide better documentation and help messages for x.py setup
Closes: #77861
I have split this up into tiny comments because I find it clearer this way. Feel free to squash it.
Remove unused code
Rustc has a builtin lint for detecting unused code inside a crate, but when an item is marked `pub`, the code, even if unused inside the entire workspace, is never marked as such. Therefore, I've built [warnalyzer](https://github.com/est31/warnalyzer) to detect unused items in a cross-crate setting.
Closes https://github.com/est31/warnalyzer/issues/2
We need a fresh input buffer each time, or we reuse the previous
data (since `read_line` appends).
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
Put all()'s otuput in the order we want to print things in, and add a
comment about why they are in this order. Provide purpose() and
all_for_help(). Use these things everywhere.
Move all the abbrev character ("a", "b", etc.) processing into
interactive_path.
No functional change.
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
Rollup of 8 pull requests
Successful merges:
- #77765 (Add LLVM flags to limit DWARF version to 2 on BSD)
- #77788 (BTreeMap: fix gdb provider on BTreeMap with ZST keys or values)
- #77795 (Codegen backend interface refactor)
- #77808 (Moved the main `impl` for FnCtxt to its own file.)
- #77817 (Switch rustdoc from `clean::Stability` to `rustc_attr::Stability`)
- #77829 (bootstrap: only use compiler-builtins-c if they exist)
- #77870 (Use intra-doc links for links to module-level docs)
- #77897 (Move `Strip` into a separate rustdoc pass)
Failed merges:
- #77879 (Provide better documentation and help messages for x.py setup)
- #77902 (Include aarch64-pc-windows-msvc in the dist manifests)
r? `@ghost`
Joshua Nelson
bors
Guillaume Gomez
strct
est31
Matthew Kraai
Eric Huss
Yuki Okushi
Josh Stone
Jake Goulding
XAMPPRocky
Erin Power
Ian Jackson
Roxane
