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Work around a resolve bug in const prop #67631

Merged
merged 4 commits into from
Dec 30, 2019
Merged

Work around a resolve bug in const prop #67631

merged 4 commits into from
Dec 30, 2019

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oli-obk
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@oli-obk oli-obk commented Dec 26, 2019 •
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r? @wesleywiser @anp

This isn't exposed right now, but further changes to rustc may start causing bugs without this.

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Dec 26, 2019
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@bors r+

Thanks!

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bors commented Dec 26, 2019

📌 Commit 652cec1 has been approved by wesleywiser

@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 Dec 26, 2019
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@bors r+

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bors commented Dec 26, 2019

📌 Commit 3ab0663 has been approved by wesleywiser

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anp commented Dec 26, 2019

Confirmed that this will unblock #67137. Thank you!!!

@anp anp mentioned this pull request Dec 26, 2019
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Mark-Simulacrum added a commit to Mark-Simulacrum/rust that referenced this pull request Dec 26, 2019
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Rollup merge of rust-lang#67631 - oli-obk:polymorphic_promotion, r=we…
eeaaee8 
…sleywiser

Work around a resolve bug in const prop

r? @wesleywiser @anp

This isn't exposed right now, but further changes to rustc may start causing bugs without this.
@Mark-Simulacrum Mark-Simulacrum mentioned this pull request Dec 26, 2019
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JohnTitor added a commit to JohnTitor/rust that referenced this pull request Dec 27, 2019
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Rollup merge of rust-lang#67631 - oli-obk:polymorphic_promotion, r=we…
9f5259a 
…sleywiser

Work around a resolve bug in const prop

r? @wesleywiser @anp

This isn't exposed right now, but further changes to rustc may start causing bugs without this.
@JohnTitor JohnTitor mentioned this pull request Dec 27, 2019
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@wesleywiser wesleywiser mentioned this pull request Dec 27, 2019
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@bors r-

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Dec 27, 2019
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oli-obk commented Dec 27, 2019

Let's not do the hack, since @wesleywiser has a real fix

@oli-obk oli-obk closed this Dec 27, 2019
@wesleywiser
Fix Instance::resolve() incorrectly returning specialized instances
25a8b5d 
We only want to return specializations when `Reveal::All` is passed, not
when `Reveal::UserFacing` is. Resolving this fixes several issues with
the `ConstProp`, `SimplifyBranches`, and `Inline` MIR optimization
passes.

Fixes rust-lang#66901
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anp commented Dec 27, 2019

Ping on #67662 (comment):

I guess we still need my PR for backwards compatibility of @anp's PR. I'll reopen

@oli-obk oli-obk reopened this Dec 27, 2019
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@bors r+

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bors commented Dec 27, 2019

📌 Commit 3ab0663 has been approved by wesleywiser

@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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Dec 27, 2019
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oli-obk commented Dec 27, 2019

@bors r-

I still want to do the warning thing

@bors bors added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Dec 27, 2019
@oli-obk oli-obk force-pushed the polymorphic_promotion branch from 3ab0663 to 5fd8abd Compare December 28, 2019 23:26
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oli-obk commented Dec 28, 2019 •
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I added one more commit @wesleywiser

It should permit #67137 to not cause a breaking change related to diverging constants, and additionally give us new const_err lints for them.

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anp commented Dec 29, 2019

Confirmed that this gets my test passing!

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bors commented Dec 29, 2019

📌 Commit 5fd8abd has been approved by wesleywiser

@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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Dec 29, 2019
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Dec 29, 2019
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Rollup merge of rust-lang#67631 - oli-obk:polymorphic_promotion, r=we…
6dc19a3 
…sleywiser

Work around a resolve bug in const prop

r? @wesleywiser @anp

This isn't exposed right now, but further changes to rustc may start causing bugs without this.
@Dylan-DPC-zz Dylan-DPC-zz mentioned this pull request Dec 29, 2019
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bors commented Dec 30, 2019

⌛ Testing commit 5fd8abd with merge 214548b...

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Auto merge of #67631 - oli-obk:polymorphic_promotion, r=wesleywiser
214548b 
Work around a resolve bug in const prop

r? @wesleywiser @anp

This isn't exposed right now, but further changes to rustc may start causing bugs without this.
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bors commented Dec 30, 2019

☀️ Test successful - checks-azure
Approved by: wesleywiser
Pushing 214548b to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Dec 30, 2019
@bors bors merged commit 5fd8abd into rust-lang:master Dec 30, 2019
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mati865 commented Dec 30, 2019

Is this 1% regression (5% on ctfe) expected?
https://perf.rust-lang.org/compare.html?start=2ba0d2acbd6cb01fb07619628882120d5b66bd59&end=214548b8afd94924c17dea456c8077931009b944&stat=instructions:u

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Looks like we're potentially calling const_eval_validated more now?

https://perf.rust-lang.org/detailed-query.html?commit=214548b8afd94924c17dea456c8077931009b944&base_commit=2ba0d2acbd6cb01fb07619628882120d5b66bd59&benchmark=ctfe-stress-4-check&run_name=baseline%20incremental

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oli-obk commented Dec 30, 2019

But only in the base incremental runs. everything else is unaffected.

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mati865 commented Dec 30, 2019 •
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patched incremental has also regressed.

@Alexendoo Alexendoo mentioned this pull request Dec 31, 2019
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@oli-obk oli-obk deleted the polymorphic_promotion branch January 1, 2020 19:47
@JohnTitor JohnTitor mentioned this pull request Jan 14, 2020
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Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Jan 15, 2020
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Rollup merge of rust-lang#68236 - JohnTitor:ice-tests, r=Centril
2039d7e 
Add some regression tests

Closes rust-lang#64848 (fixed by rust-lang#67631)
Closes rust-lang#65918 (ICE is hidden by rust-lang#67000, no longer ICE)
Closes rust-lang#66473 (fixed by rust-lang#68084)
Closes rust-lang#67550 (set mir-opt-level to 3)

r? @Centril
@oli-obk oli-obk mentioned this pull request Feb 10, 2020
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