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Revert "Rollup merge of #97346 - JohnTitor:remove-back-compat-hacks, … - #99860

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Aug 18, 2022
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Revert "Rollup merge of #97346 - JohnTitor:remove-back-compat-hacks, …#99860
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oli-obk:revert_97346

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@oli-obk

@oli-obkoli-obk commented Jul 28, 2022

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…r=oli-obk"

This reverts commit c703d11, reversing
changes made to 64eb9ab.

it didn't apply cleanly, so now it works the same for RPIT and for TAIT instead of just working for RPIT, but we should keep those in sync anyway. It also exposed a TAIT bug (see the feature gated test that now ICEs).

r? @pnkfelix

fixes#99536

…t-hacks, r=oli-obk"
This reverts commit c703d11, reversing
changes made to 64eb9ab.
@rustbotrustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Jul 28, 2022
@rust-highfiverust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 28, 2022
@compiler-errors

compiler-errors commented Aug 11, 2022

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cc @rust-lang/types
this is now a regression from stable to beta

@compiler-errorscompiler-errors added regression-from-stable-to-beta Performance or correctness regression from stable to beta. beta-nominated Nominated for backporting to the compiler in the beta channel. labels Aug 11, 2022
@rustbotrustbot added the I-prioritize Issue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical} label Aug 11, 2022
@compiler-errorscompiler-errors removed the I-prioritize Issue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical} label Aug 11, 2022
@lcnr

lcnr commented Aug 13, 2022

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@pnkfelix do you want to sign this off?

otherwise r=me I guess 😁 do we have an open issue for the new feature-gated ICE?
I guess we just have to open #86800 again?

@pnkfelix

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@bors r+ p=100

@bors

bors commented Aug 18, 2022

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📌 Commit a85eb3d has been approved by pnkfelix

It is now in the queue for this repository.

@borsbors 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 Aug 18, 2022
@pnkfelix

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@rustbot label: beta-accepted

@rustbotrustbot added the beta-accepted Accepted for backporting to the compiler in the beta channel. label Aug 18, 2022
@bors

bors commented Aug 18, 2022

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⌛ Testing commit a85eb3d with merge 8064a49...

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bors commented Aug 18, 2022

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☀️ Test successful - checks-actions
Approved by: pnkfelix
Pushing 8064a49 to master...

@borsbors added the merged-by-bors This PR was explicitly merged by bors. label Aug 18, 2022
@bors
bors merged commit 8064a49 into rust-lang:masterAug 18, 2022
@rustbotrustbot added this to the 1.65.0 milestone Aug 18, 2022
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Finished benchmarking commit (8064a49): comparison url.

Instruction count

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

Max RSS (memory usage)

Results
  • Primary benchmarks: no relevant changes found
  • Secondary benchmarks: mixed results
mean1maxcount2
Regressions ❌
(primary)
--0
Regressions ❌
(secondary)
2.2%2.2%2
Improvements ✅
(primary)
--0
Improvements ✅
(secondary)
-3.3%-3.3%2
All ❌✅ (primary)--0

Cycles

Results
  • Primary benchmarks: mixed results
  • Secondary benchmarks: ❌ relevant regression found
mean1maxcount2
Regressions ❌
(primary)
2.6%2.6%1
Regressions ❌
(secondary)
3.4%3.4%1
Improvements ✅
(primary)
-2.6%-2.6%1
Improvements ✅
(secondary)
--0
All ❌✅ (primary)-0.0%-2.6%2

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

@rustbot label: -perf-regression

Footnotes

  1. the arithmetic mean of the percent change2

  2. number of relevant changes2

@oli-obk
oli-obk deleted the revert_97346 branch August 22, 2022 08:06
ehuss pushed a commit to ehuss/rust that referenced this pull request Aug 31, 2022
Revert "Rollup merge of rust-lang#97346 - JohnTitor:remove-back-compat-hacks, …
…r=oli-obk"
This reverts commit c703d11, reversing
changes made to 64eb9ab.
it didn't apply cleanly, so now it works the same for RPIT and for TAIT instead of just working for RPIT, but we should keep those in sync anyway. It also exposed a TAIT bug (see the feature gated test that now ICEs).
r? `@pnkfelix`
fixesrust-lang#99536
@ehussehuss mentioned this pull request Aug 31, 2022
@ehussehuss removed the beta-nominated Nominated for backporting to the compiler in the beta channel. label Aug 31, 2022
@ehussehuss modified the milestones: 1.65.0, 1.64.0Aug 31, 2022
bors added a commit to rust-lang-ci/rust that referenced this pull request Aug 31, 2022
[BETA] Beta 1.64 backports
* Cargo:
* remove missed reference to workspace inheritance in unstable.md (rust-lang/cargo#11002)
* Delay formatting trimmed path until lint/error is emitted rust-lang#99893
* Use `node_type_opt` to skip over generics that were not expected rust-lang#100155
* Revert "Remove a back-compat hack on lazy TAIT rust-lang#97346" rust-lang#99860
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beta-acceptedAccepted for backporting to the compiler in the beta channel.merged-by-borsThis PR was explicitly merged by bors.regression-from-stable-to-betaPerformance or correctness regression from stable to beta.S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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nightly 2022-06-29 rejects previously compiling code with missing trait implementations

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