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Much of the compiler calls functions on Align projected from AbiAlign.
AbiAlign impls Deref to its inner Align, so we can simplify these away.
Also, it will minimize disruption when AbiAlign is removed.
For now, preserve usages that might resolve to PartialOrd or PartialEq,
as those have odd inference.
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We have a ui test to ensure we emit an error if we encounter too big
enums. Before this fix, compiling the test with `-Cdebuginfo=2` would
not include the span of the instantiation site, because the error is
then emitted from a different code path that does not include the span.
Propagate the span to the error also in the debuginfo case, so the test
passes regardless of debuginfo level.
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It was already available as a generic parameter anyway, and it's not like we'll ever put a tag in the 5-billionth field.
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async_drop_in_place::{closure}, scoped async drop added.
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This reverts commit 6adc2c1fd6ecde7bf83c8b8fbc71f402ced87054.
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Previously, we unconditionally set the bitwidth to 128-bits, the largest
an discrimnator would possibly be. Then, LLVM would cut down the constant by
chopping off leading zeroes before emitting the DWARF. LLVM only
supported 64-bit descriminators, so this would also have occasionally
resulted in truncated data (or an assert) if more than 64-bits were
used.
LLVM added support for 128-bit enumerators in llvm/llvm-project#125578
That patchset also trusts the constant to describe how wide the variant tag is.
As a result, we went from emitting tags that looked like:
DW_AT_discr_value (0xfe)
(`form1`)
to emitting tags that looked like:
DW_AT_discr_value (<0x10> fe ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 )
This makes the `DW_AT_discr_value` encode at the bitwidth of the tag,
which:
1. Is probably closer to our intentions in terms of describing the data.
2. Doesn't invoke the 128-bit support which may not be supported by all
debuggers / downstream tools.
3. Will result in smaller debug information.
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The `gimli` crate is already a dependency of `thorin-dwp`, which is already a
dependency of `rustc_codegen_ssa`.
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`SBTypeStaticField::GetConstantValue()`
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Co-authored-by: Camille Gillot <gillot.camille@gmail.com>
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Push span lookup into `type_map::stub` and pass the `DefId` instead of
doing the lookup outside and passing in the location metadata.
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This change attaches file information (`DIFile` reference and line
number) to struct debug info nodes.
Before:
```
; foo.ll
...
!5 = !DIFile(filename: "<unknown>", directory: "")
...
!16 = !DICompositeType(tag: DW_TAG_structure_type, name: "MyType", scope: !2, file: !5, size: 32, align: 32, elements: !17, templateParams: !19, identifier: "4cb373851db92e732c4cb5651b886dd0")
...
```
After:
```
; foo.ll
...
!3 = !DIFile(filename: "foo.rs", directory: "/home/matt/src/rust98678", checksumkind: CSK_SHA1, checksum: "bcb9f08512c8f3b8181ef4726012bc6807bc9be4")
...
!16 = !DICompositeType(tag: DW_TAG_structure_type, name: "MyType", scope: !2, file: !3, line: 3, size: 32, align: 32, elements: !17, templateParams: !19, identifier: "9e5968c7af39c148acb253912b7f409f")
...
```
Fixes #98678
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Supertraits of `BuilderMethods` are all called `XyzBuilderMethods`.
Supertraits of `CodegenMethods` are all called `XyzMethods`. This commit
changes the latter to `XyzCodegenMethods`, for consistency.
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Add `#[warn(unreachable_pub)]` to a bunch of compiler crates
By default `unreachable_pub` identifies things that need not be `pub` and tells you to make them `pub(crate)`. But sometimes those things don't need any kind of visibility. So they way I did these was to remove the visibility entirely for each thing the lint identifies, and then add `pub(crate)` back in everywhere the compiler said it was necessary. (Or occasionally `pub(super)` when context suggested that was appropriate.) Tedious, but results in more `pub` removal.
There are plenty more crates to do but this seems like enough for a first PR.
r? `@compiler-errors`
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The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
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The gains in performance are not worth the costs in correctness.
This is partly because the gains are zero and the costs are unknown.
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Make changes necessary to support these types in the compiler.
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Sets the accessibility of types and fields in DWARF using
`DW_AT_accessibility` attribute.
`DW_AT_accessibility` (public/protected/private) isn't exactly right for
Rust, but neither is `DW_AT_visibility` (local/exported/qualified), and
there's no way to set `DW_AT_visbility` in LLVM's API.
Signed-off-by: David Wood <david@davidtw.co>
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`x clippy compiler -Aclippy::all -Wclippy::needless_borrow --fix`.
Then I had to remove a few unnecessary parens and muts that were exposed
now.
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