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109 Commits

Author SHA1 Message Date
Alexander Cyon
ac69544a17
chore: Fix typos in 'compiler' (batch 1) 2024-09-02 07:42:38 +02:00
Michael Goulet
c361c924a0 Use assert_matches around the compiler 2024-08-11 12:25:39 -04:00
Nicholas Nethercote
84ac80f192 Reformat use declarations. 
The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
 2024-07-29 08:26:52 +10:00
Amanda Stjerna
d63708b907 Address code review comments on the comments 2024-06-12 15:48:34 +02:00
Amanda Stjerna
3bdcb9d436 Revise documentation after @lqd's comments 2024-06-12 15:47:32 +02:00
Amanda Stjerna
aee846224c Remove a few unnecessary constructions 
This shaves off ca 6% of the cycles in `start_walk_from()` in my
experiments.
 2024-06-12 15:47:32 +02:00
Amanda Stjerna
b1add7bc04 Slightly faster version of find_state 
This version shaves off ca 2% of the cycles in my experiments
and makes the control flow easier to follow for me and hopefully
others, including the compiler.

Someone gave me a working profiler and by God I'm using it.
 2024-06-12 15:47:32 +02:00
Amanda Stjerna
14c10ec88e Docstring for for Annotation 
Note that this changes no executing code. The change is 100% in documentation.
 2024-06-12 15:47:32 +02:00
Amanda Stjerna
582c613be8 Formatting, weird because I just did that 2024-06-12 15:47:32 +02:00
Amanda Stjerna
905db03b28 Simplify path compression logic 2024-06-12 15:47:32 +02:00
Amanda Stjerna
d2a01760bc Documentation fixes 2024-06-12 15:47:32 +02:00
Amanda Stjerna
b1ace388c0 Extend SCC construction to enable extra functionality 
This patch has been extracted from #123720. It specifically enhances
`Sccs` to allow tracking arbitrary commutative properties of SCCs, including
- reachable values (max/min)
- SCC-internal values (max/min)

This helps with among other things universe computation: we can now identify
SCC universes as a straightforward "find max/min" operation during SCC construction.

It's also more or less zero-cost; don't use the new features, don't pay for them.

This commit also vastly extends the documentation of the SCCs module, which I had a very hard time following.
 2024-06-12 15:47:32 +02:00
r0cky
dabd05bbab Apply x clippy --fix and x fmt 2024-05-30 09:51:27 +08:00
Nicholas Nethercote
55b6ff8e41 Remove extern crate tracing. 
`use` is a nicer way of doing things.
 2024-05-08 12:52:31 +10:00
Maybe Waffle
523fe2b67b Add tests for predecessor-aware VecGraph mode 2024-04-18 17:32:42 +00:00
Maybe Waffle
fa134b5e0f Add graph::depth_first_search_as_undirected 2024-04-15 23:20:52 +00:00
Maybe Waffle
7d2cb3dda7 Make graph::DepthFirstSearch accept G by value 
It's required for the next commit.

Note that you can still have `G = &H`, since there are implementations of all
the graph traits for references.
 2024-04-15 23:20:52 +00:00
Maybe Waffle
86a576528c Add an opt-in to store incoming edges in VecGraph + some docs 2024-04-15 23:20:52 +00:00
许杰友 Jieyou Xu (Joe)
5580ae9795
Rollup merge of #123934 - WaffleLapkin:graph-mini-refactor, r=fmease 
`rustc_data_structures::graph` mini refactor

Who doesn't love to breathe dust from the ancient times?
 2024-04-15 16:56:18 +01:00
Maybe Waffle
435db9b9bd Use RPITIT for Successors and Predecessors traits 
Now with RPITIT instead of GAT!
 2024-04-15 13:34:08 +00:00
Maybe Waffle
e8d2221e3b Make depth_first_search into a standalone function 
Does not necessarily change much, but we never overwrite it, so I see no reason
for it to be in the `Successors` trait. (+we already have a similar `is_cyclic`)
 2024-04-14 16:03:08 +00:00
Maybe Waffle
3124fa9310 Document ControlFlowGraph 2024-04-14 15:53:38 +00:00
Maybe Waffle
f5144938bd Rename WithNumEdges => NumEdges and WithStartNode => StartNode 2024-04-14 15:51:29 +00:00
Maybe Waffle
0d5fc9bf58 Merge {With,Graph}{Successors,Predecessors} into {Successors,Predecessors} 
Now with GAT!
 2024-04-14 15:48:53 +00:00
Maybe Waffle
398da593a5 Merge WithNumNodes into DirectedGraph 2024-04-14 15:46:40 +00:00
Vadim Petrochenkov
b40ea03f8a rustc_index: Add a ZERO constant to index types 
It is commonly used.
 2024-04-03 19:06:22 +03:00
Camille GILLOT
f83468c89b Inline dominator check. 2023-12-31 00:37:45 +00:00
surechen
40ae34194c remove redundant imports 
detects redundant imports that can be eliminated.

for #117772 :

In order to facilitate review and modification, split the checking code and
removing redundant imports code into two PR.
 2023-12-10 10:56:22 +08:00
Nicholas Nethercote
b12851ce5d Avoid an unnecessary by_ref. 2023-11-28 14:32:40 +11:00
Nicholas Nethercote
7060fc8327 Replace no_ord_impl with orderable. 
Similar to the previous commit, this replaces `newtype_index`'s opt-out
`no_ord_impl` attribute with the opt-in `orderable` attribute.
 2023-11-22 18:38:17 +11:00
Tomasz Miąsko
b61a6d59e4 Remove unused dominator iterator 2023-10-10 21:39:59 +02:00
Tomasz Miąsko
0528d378b6 Optimize dominators for small path graphs 
Generalizes the small dominators approach from #107449.
 2023-10-05 23:45:59 +02:00
Tomasz Miąsko
ba694e301c Remove redundant Dominators::start_node field 2023-10-05 23:45:58 +02:00
Tomasz Miąsko
a8ec7ddf0e Test immediate dominators using public API 2023-10-05 23:45:58 +02:00
Zalathar
01b67f4b26 coverage: Simplify sorting of coverage spans extracted from MIR 
Switching to `Ordering::then_with` makes control-flow less complicated, and
there is no need to use `partial_cmp` here.
 2023-09-18 23:15:25 +10:00
klensy
3b26b3d1d2 don't use SnapshotVec in Graph implementation, as it looks unused; use Vec instead 2023-08-28 18:59:55 +03:00
Mark Rousskov
cc907f80b9 Re-format let-else per rustfmt update 2023-07-12 21:49:27 -04:00
bors
97d328012b Auto merge of #111673 - cjgillot:dominator-preprocess, r=cjgillot,tmiasko 
Preprocess and cache dominator tree

Preprocessing dominators has a very strong effect for https://github.com/rust-lang/rust/pull/111344.
That pass checks that assignments dominate their uses repeatedly. Using the unprocessed dominator tree caused a quadratic runtime (number of bbs x depth of the dominator tree).

This PR also caches the dominator tree and the pre-processed dominators in the MIR cfg cache.

Rebase of https://github.com/rust-lang/rust/pull/107157
cc `@tmiasko`
 2023-05-24 16:18:21 +00:00
Camille GILLOT
7c8f29f02c Revert spurious changes. 2023-05-18 14:36:13 +00:00
Camille GILLOT
fa8598cb50 Merge DominatorTree and Dominators. 2023-05-17 10:37:29 +00:00
Camille GILLOT
4bbdb64016 Typo. 2023-05-17 10:29:12 +00:00
Camille GILLOT
ae318e3444 Remove outdated comment. 2023-05-17 10:26:04 +00:00
Tomasz Miąsko
aa1267f630 Preprocess dominator tree to answer queries in O(1) 2023-05-17 09:36:12 +00:00
Camille GILLOT
84339a6f05 Process current bucket instead of parent's bucket when starting loop for dominators. 2023-05-15 16:16:34 +00:00
Tomasz Miąsko
f16d2b1629 Start node has no immediate dominator 
Change the immediate_dominator return type to Option, and use None to
indicate that node has no immediate dominator.

Also fix the issue where the start node would be returned as its own
immediate dominator.
 2023-05-14 16:09:58 +02:00
Maybe Waffle
e496fbec92 Split {Idx, IndexVec, IndexSlice} into their own modules 2023-04-24 13:53:35 +00:00
Nilstrieb
81c320ea77 Fix some clippy::complexity 2023-04-09 23:22:14 +02:00
Scott McMurray
a2ee7592d6 Use &IndexSlice instead of &IndexVec where possible 
All the same reasons as for `[T]`: more general, less pointer chasing, and `&mut IndexSlice` emphasizes that it doesn't change *length*.
 2023-04-02 17:35:37 -07:00
John Kåre Alsaker
f60d2eb6c1 Add -Z time-passes-format to allow specifying a JSON output for -Z time-passes 2023-03-21 18:18:25 +01:00
b-naber
8252a6eddf address review 2023-02-21 21:54:53 +00:00