Skip to content

stall ConstArgHasType in compute_goal_fast_path #144702

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom
Merged
merged 1 commit into from
Jul 31, 2025
Merged

stall ConstArgHasType in compute_goal_fast_path #144702

merged 1 commit into from
Jul 31, 2025
+7 −0

Conversation

compiler-errors
Copy link
Member

I'm having major deja-vu about this; I thought that already implemented this but 🤷 maybe not.

@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver) labels Jul 30, 2025
@compiler-errors
Copy link
Member Author

@bors2 try @rust-timer queue

After this experiment I want to also see if we should do a fast path for param-env lookup and structually matching the ty.

@rust-timer

This comment has been minimized.

Sign in to view
@rust-bors
Copy link

rust-bors bot commented Jul 30, 2025

⌛ Trying commit 585eac8 with merge b777317…

To cancel the try build, run the command @bors try cancel.

rust-bors bot added a commit that referenced this pull request Jul 30, 2025
@rust-bors
Auto merge of #144702 - compiler-errors:stall-const-arg-has-type, r=<…
b777317 
…try>

stall `ConstArgHasType` in `compute_goal_fast_path`
@rustbot rustbot added the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Jul 30, 2025
@rust-bors
Copy link

rust-bors bot commented Jul 30, 2025

☀️ Try build successful (CI)
Build commit: b777317 (b777317f41894dcd557aad152a29373e0288bf31, parent: e5e79f8bd428d0b8d26e8240d718b134ef297459)

@rust-timer

This comment has been minimized.

Sign in to view
@rust-timer
Copy link
Collaborator

Finished benchmarking commit (b777317): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible changes in compiler perf.

@bors rollup=never
@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (secondary 0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

mean range count
Regressions ❌
(primary)		 - - 0
Regressions ❌
(secondary)		 1.5% [0.8%, 2.3%] 2
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 -2.8% [-2.8%, -2.8%] 1
All ❌✅ (primary) - - 0

Cycles

Results (primary 2.5%, secondary 3.3%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

mean range count
Regressions ❌
(primary)		 2.5% [2.5%, 2.5%] 1
Regressions ❌
(secondary)		 3.3% [3.3%, 3.3%] 1
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 - - 0
All ❌✅ (primary) 2.5% [2.5%, 2.5%] 1

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 469.342s -> 470.258s (0.20%)
Artifact size: 376.86 MiB -> 376.84 MiB (-0.01%)

@rustbot rustbot removed the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Jul 31, 2025
@compiler-errors compiler-errors marked this pull request as ready for review July 31, 2025 13:14
@rustbot
Copy link
Collaborator

rustbot commented Jul 31, 2025

r? @SparrowLii

rustbot has assigned @SparrowLii.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

@compiler-errors
Copy link
Member Author

This is kinda whatever but I think it can still land because it seems useful in the abstract sense and likely not to make things slower in a concrete sense.

r? lcnr

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 31, 2025
@rustbot
Copy link
Collaborator

rustbot commented Jul 31, 2025

Some changes occurred to the core trait solver

cc @rust-lang/initiative-trait-system-refactor

@lcnr
Copy link
Contributor

lcnr commented Jul 31, 2025

Given the perf impact 🤔

@bors r+ rollup=always

@bors
Copy link
Collaborator

bors commented Jul 31, 2025

📌 Commit 585eac8 has been approved by lcnr

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 31, 2025
@jdonszelmann jdonszelmann mentioned this pull request Jul 31, 2025
Merged
bors added a commit that referenced this pull request Jul 31, 2025
@bors
Auto merge of #144740 - jdonszelmann:rollup-nprgqnm, r=jdonszelmann
adcb3d3 
Rollup of 6 pull requests

Successful merges:

 - #144688 (Uniform `enter_trace_span!` and add documentation)
 - #144702 (stall `ConstArgHasType` in `compute_goal_fast_path`)
 - #144711 (Consider operator's span when computing binop expr span)
 - #144712 (Deduplicate `IntTy`/`UintTy`/`FloatTy`.)
 - #144726 (merge rustc_attr_data_structures into rustc_hir)
 - #144733 (fix: Match width of ascii and unicode secondary file start)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit eec13cd into rust-lang:master Jul 31, 2025
11 checks passed
@rustbot rustbot added this to the 1.90.0 milestone Jul 31, 2025
rust-timer added a commit that referenced this pull request Jul 31, 2025
@rust-timer
Unrolled build for #144702
4b0234e 
Rollup merge of #144702 - compiler-errors:stall-const-arg-has-type, r=lcnr

stall `ConstArgHasType` in `compute_goal_fast_path`

I'm having major deja-vu about this; I thought that already implemented this but 🤷 maybe not.
github-actions bot pushed a commit to rust-lang/miri that referenced this pull request Aug 1, 2025
@bors
Auto merge of #144740 - jdonszelmann:rollup-nprgqnm, r=jdonszelmann
5825740 
Rollup of 6 pull requests

Successful merges:

 - rust-lang/rust#144688 (Uniform `enter_trace_span!` and add documentation)
 - rust-lang/rust#144702 (stall `ConstArgHasType` in `compute_goal_fast_path`)
 - rust-lang/rust#144711 (Consider operator's span when computing binop expr span)
 - rust-lang/rust#144712 (Deduplicate `IntTy`/`UintTy`/`FloatTy`.)
 - rust-lang/rust#144726 (merge rustc_attr_data_structures into rustc_hir)
 - rust-lang/rust#144733 (fix: Match width of ascii and unicode secondary file start)

r? `@ghost`
`@rustbot` modify labels: rollup
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Reviewers
No reviews
Assignees

@lcnr lcnr

Labels
S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
Projects
None yet
Milestone
1.90.0
Development

Successfully merging this pull request may close these issues.
6 participants
@compiler-errors @rust-timer @rustbot @lcnr @bors @SparrowLii