Fixes#79661
In incremental compilation mode, we update a `DefPathHash -> DefId`
mapping every time we create a `DepNode` for a foreign `DefId`.
This mapping is written out to the on-disk incremental cache, and is
read by the next compilation session to allow us to lazily decode
`DefId`s.
When we decode a `DepNode` from the current incremental cache, we need
to ensure that any previously-recorded `DefPathHash -> DefId` mapping
gets recorded in the new mapping that we write out. However, PR #74967
didn't do this in all cases, leading to us being unable to decode a
`DefPathHash` in certain circumstances.
This PR refactors some of the code around `DepNode` deserialization to
prevent this kind of mistake from happening again.
Rename `AllocRef` to `Allocator` and `(de)alloc` to `(de)allocate`
Calling `Box::alloc_ref` and `Vec::alloc_ref` sounds like allocating a reference. To solve this ambiguity, this renames `AllocRef` to `Allocator` and `alloc` to `allocate`. For a more detailed explaination see https://github.com/rust-lang/wg-allocators/issues/76.
closes https://github.com/rust-lang/wg-allocators/issues/76
r? `@KodrAus`
`@rustbot` modify labels: +A-allocators +T-libs
`@rustbot` ping wg-allocators
Fix perf regression caused by #79284https://github.com/rust-lang/rust/pull/79284 only moved code around but this changed inlining and caused a large perf regression. This fixes it for me, though I'm less confident than usual because the regression was not observable with my usual (i.e. incremental) compilation settings.
r? `@Mark-Simulacrum`
Coverage tests for remaining TerminatorKinds and async, improve Assert
Tested and validate results for panic unwind, panic abort, assert!()
macro, TerminatorKind::Assert (for example, numeric overflow), and
async/await.
Implemented a previous documented idea to change Assert handling to be
the same as FalseUnwind and Goto, so it doesn't get its own
BasicCoverageBlock anymore. This changed a couple of coverage regions,
but I validated those changes are not any worse than the prior results,
and probably help assure some consistency (even if some people might
disagree with how the code region is consistently computed).
Fixed issue with async/await. AggregateKind::Generator needs to be
handled like AggregateKind::Closure; coverage span for the outer async
function should not "cover" the async body, which is actually executed
in a separate "closure" MIR.
Fix some clippy lints
Happy to revert these if you think they're less readable, but personally I like them better now (especially the `else { if { ... } }` to `else if { ... }` change).
Use `item_name` instead of pretty printing for resolving `Self` on intra-doc links
Pretty printing would add a `r#` prefix to raw identifiers, which was
not correct. In general I think this change makes sense -
pretty-printing is for showing to the *user*, `item_name` is suitable to
pass to resolve.
Fixes https://github.com/rust-lang/rust/issues/79633.
r? `@Manishearth`
disable a ptr equality test on Miri
This test relies on deduplication of constants. I do not think that this is a *guarantee* that Rust currently makes, and indeed Miri does not deduplicate constants the same way that rustc does, leading to different behavior in this test.
For now, I propose we simply disable this test in Miri.
Update cargo
12 commits in bfca1cd22bf514d5f2b6c1089b0ded0ba7dfaa6e..63d0fe43449adcb316d34d98a982b597faca4178
2020-11-24 16:33:21 +0000 to 2020-12-02 01:44:30 +0000
- Add "--workspace" to update command (rust-lang/cargo#8725)
- Add an FAQ for "Why is my crate rebuilt?" (rust-lang/cargo#8927)
- Set docs.rs as the default extern-map for crates.io (rust-lang/cargo#8877)
- remove extra whitespace when running cargo -Z help (rust-lang/cargo#8924)
- Remove version from dev-dependencies to make it easier to publish. (rust-lang/cargo#8920)
- update dependency queue to consider cost for each node (rust-lang/cargo#8908)
- Fix some rustdoc warnings. (rust-lang/cargo#8911)
- Bump miow dependency to not invalidly assume memory layout (rust-lang/cargo#8909)
- Remove unnecessary trailing semicolons (rust-lang/cargo#8906)
- Fix custom_target_dependency test. (rust-lang/cargo#8907)
- fix: we don't ignore `version` for `git`/`path` deps now (rust-lang/cargo#8900)
- doc (book): add "Getting Started" subsection: "Essential Terminology" (rust-lang/cargo#8855)
Pass around Symbols instead of Idents in doctree
The span was unused.
Vaguely related to https://github.com/rust-lang/rust/pull/78082 - currently working on converting `visit_ast` to use `hir::intravisit` and this makes that a little easier.
r? ``@GuillaumeGomez``
Use more std:: instead of core:: in docs for consistency
``@rustbot`` label T-doc
Some cleanup work to use `std::` instead of `core::` in docs as much as possible. This helps with terminology and consistency, especially for newcomers from other languages that have often heard of `std` to describe the standard library but not of `core`.
Edit: I also added more intra doc links when I saw the opportunity.
Render Markdown in search results
Fixes#32040.
Previously Markdown documentation was not rendered to HTML for search results,
which led to the output not being very readable, particularly for inline code.
This PR fixes that by rendering Markdown to HTML with the help of pulldown-cmark
(the library rustdoc uses to parse Markdown for the main text of documentation).
However, the text for the title attribute (the text shown when you hover over an
element) still uses the plain-text rendering since it is displayed in browsers
as plain-text.
Only these styles will be rendered; everything else is stripped away:
* *italics*
* **bold**
* `inline code`
Previously Markdown documentation was not rendered to HTML for search results,
which led to the output not being very readable, particularly for inline code.
This PR fixes that by rendering Markdown to HTML with the help of pulldown-cmark
(the library rustdoc uses to parse Markdown for the main text of documentation).
However, the text for the title attribute (the text shown when you hover over an
element) still uses the plain-text rendering since it is displayed in browsers
as plain-text.
Only these styles will be rendered; everything else is stripped away:
* *italics*
* **bold**
* `inline code`
Added one more test (two files) showing coverage of generics and unused
functions across crates.
Created and referenced new Issues, as requested.
Added comments.
Added a note about the possible effects of compiler options on LLVM
coverage maps.
Fixes multiple issue with counters, with simplification
Includes a change to the implicit else span in ast_lowering, so coverage
of the implicit else no longer spans the `then` block.
Adds coverage for unused closures and async function bodies.
Fixes: #78542
Adding unreachable regions for known MIR missing from coverage map
Cleaned up PR commits, and removed link-dead-code requirement and tests
Coverage no longer depends on Issue #76038 (`-C link-dead-code` is
no longer needed or enforced, so MSVC can use the same tests as
Linux and MacOS now)
Restrict adding unreachable regions to covered files
Improved the code that adds coverage for uncalled functions (with MIR
but not-codegenned) to avoid generating coverage in files not already
included in the files with covered functions.
Resolved last known issue requiring --emit llvm-ir workaround
Fixed bugs in how unreachable code spans were added.
Tested and validate results for panic unwind, panic abort, assert!()
macro, TerminatorKind::Assert (for example, numeric overflow), and
async/await.
Implemented a previous documented idea to change Assert handling to be
the same as FalseUnwind and Goto, so it doesn't get its own
BasicCoverageBlock anymore. This changed a couple of coverage regions,
but I validated those changes are not any worse than the prior results,
and probably help assure some consistency (even if some people might
disagree with how the code region is consistently computed).
Fixed issue with async/await. AggregateKind::Generator needs to be
handled like AggregateKind::Closure; coverage span for the outer async
function should not "cover" the async body, which is actually executed
in a separate "closure" MIR.
Fix `unknown-crate` when using -Z self-profile with rustdoc
... by removing a duplicate `crate_name` field in `interface::Config`,
making it clear that rustdoc should be passing it to `config::Options` instead.
Unblocks https://github.com/rust-lang/rustc-perf/issues/797.
Revert "Auto merge of #79209
r? `@nikomatsakis`
This has caused some issues (#79560) so better to revert and try to come up with a proper fix without rush.
Rustdoc: JSON backend experimental impl, with new tests.
Based on #75114 by `@P1n3appl3`
The first commit is all of #75114, but squased to 1 commit, as that was much easier to rebase onto master.
The git history is a mess, but I think I'll edit it after review, so it's obvious whats new.
## Still to do
- [ ] Update docs.
- [ ] Add bless option to tests.
- [ ] Add test option for multiple files in same crate.
- [ ] Decide if the tests should check for json to be equal or subset.
- [ ] Go through the rest of the review for the original pr. (This is open because the test system is done(ish), but stuff like [not using a hashmap](https://github.com/rust-lang/rust/pull/75114#discussion_r519474420) and [using `CRATE_DEF_INDEX` ](https://github.com/rust-lang/rust/pull/75114#discussion_r519470764) hasn't)
I'm also sure how many of these we need to do before landing on nightly, as it would be nice to get this in tree, so it isn't effected by churn like #79125, #79041, #79061
r? `@jyn514`
