Tell MirUsedCollector that the pointer alignment checks calls its panic symbol
Fixes https://github.com/rust-lang/rust/pull/118683 (not an issue, but that PR is a basically a bug report)
When we had `panic_immediate_abort` start adding `#[inline]` to this panic function, builds started breaking because we failed to write up the MIR assert terminator to the correct panic shim. Things happened to work before by pure luck because without this feature enabled, the function we're inserting calls to is `#[inline(never)]` so we always generated code for it.
r? bjorn3
Most notably, this commit changes the `pub use crate::*;` in that file
to `use crate::*;`. This requires a lot of `use` items in other crates
to be adjusted, because everything defined within `rustc_span::*` was
also available via `rustc_span::source_map::*`, which is bizarre.
The commit also removes `SourceMap::span_to_relative_line_string`, which
is unused.
rename mir::Constant -> mir::ConstOperand, mir::ConstKind -> mir::Const
Also, be more consistent with the `to/eval_bits` methods... we had some that take a type and some that take a size, and then sometimes the one that takes a type is called `bits_for_ty`.
Turns out that `ty::Const`/`mir::ConstKind` carry their type with them, so we don't need to even pass the type to those `eval_bits` functions at all.
However this is not properly consistent yet: in `ty` we have most of the methods on `ty::Const`, but in `mir` we have them on `mir::ConstKind`. And indeed those two types are the ones that correspond to each other. So `mir::ConstantKind` should actually be renamed to `mir::Const`. But what to do with `mir::Constant`? It carries around a span, that's really more like a constant operand that appears as a MIR operand... it's more suited for `syntax.rs` than `consts.rs`, but the bigger question is, which name should it get if we want to align the `mir` and `ty` types? `ConstOperand`? `ConstOp`? `Literal`? It's not a literal but it has a field called `literal` so it would at least be consistently wrong-ish...
``@oli-obk`` any ideas?
treat host effect params as erased in codegen
This fixes the changes brought to codegen tests when effect params are added to libcore, by not attempting to monomorphize functions that get the host param by being `const fn`.
r? `@oli-obk`
This fixes the changes brought to codegen tests when effect params are
added to libcore, by not attempting to monomorphize functions that get
the host param by being `const fn`.
Allow `large_assignments` for Box/Arc/Rc initialization
Does the `stop linting in box/arc initialization` task of #83518.
r? `@oli-obk` who is E-mentor.
Avoid duplicate `large_assignments` lints
By checking for overlapping spans.
This PR does the "reduce noisiness" task in #83518.
r? `@oli-obk` who added E-mentor and E-help-wanted and wrote the initial code.
(The fix itself is in dc82736677. The two commits before that are just small refactorings.)
Rollup of 7 pull requests
Successful merges:
- #112931 (Enable zlib in LLVM on aarch64-apple-darwin)
- #113158 (tests: unset `RUSTC_LOG_COLOR` in a test)
- #113173 (CI: include workflow name in concurrency group)
- #113335 (Reveal opaques in new solver)
- #113390 (CGU formation tweaks)
- #113399 (Structurally normalize again for byte string lit pat checking)
- #113412 (Add basic types to SMIR)
r? `@ghost`
`@rustbot` modify labels: rollup
It makes it sound like the `ExprKind` and `Rvalue` are supposed to represent all pointer related
casts, when in reality their just used to share a some enum variants. Make it clear there these
are only coercion to make it clear why only some pointer related "casts" are in the enum.
It currently uses ranges, which index into `UsageMap::used_items`. This
commit changes it to just use `Vec`, which is much simpler to construct
and use. This change does result in more allocations, but it is few
enough that the perf impact is negligible.
`UsageMap` contains `used_map`, which maps from an item to the item it
uses. This commit add `user_map`, which is the inverse.
We already compute this inverse, but later on, and it is only held as a
local variable. Its simpler and nicer to put it next to `used_map`.
Currently, the code uses multiple words to describe when a mono item `f`
uses a mono item `g`, all of which have problems.
- `f` references `g`: confusing because there are multiple kinds of use,
e.g. "`f` calls `g`" is one, but "`f` takes a (`&T`-style) reference
of `g`" is another, and that's two subtly different meanings of
"reference" in play.
- `f` accesses `g`: meh, "accesses" makes me think of data, and this is
code.
- `g` is a neighbor (or neighbour) of `f`: is verbose, and doesn't
capture the directionality.
This commit changes the code to use "`f` uses `g`" everywhere. I think
it's better than the current terminology, and the consistency is
important.
Also, `InliningMap` is renamed `UsageMap` because (a) it was always
mostly about usage, and (b) the inlining information it did record was
removed in a recent commit.
We record inlining status for mono items in `MonoItems`, and then
transfer it to `InliningMap`, for later use in
`InliningMap::with_inlining_candidates`.
But we can just compute inlining status directly in
`InliningMap::with_inlining_candidates`, because the mono item is right
there. There's no need to compute it in advance.
This commit changes the code to do that, removing the need for
`MonoItems` and `InliningMap::inlines`. This does result in more calls
to `instantiation_mode` (one per static occurrence) but the performance
effect is negligible.
