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@lcnr lcnr commented Oct 5, 2020

We used the callee param env instead of the caller param env by accident in #77430, this PR fixes that and caches it in the Inliner struct.

fixes #77564

r? @ecstatic-morse

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Oct 5, 2020
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Damn. Thanks @lcnr

@bors r+

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bors commented Oct 5, 2020

📌 Commit daf48b8 has been approved by ecstatic-morse

@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 Oct 5, 2020
@@ -300,9 +301,6 @@ impl Inliner<'tcx> {
debug!(" final inline threshold = {}", threshold);

// FIXME: Give a bonus to functions with only a single caller

let param_env = tcx.param_env(callee_body.source.def_id());
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note: this was wrong even if it used the caller source as we have to use a ParamEnv with RevealAll. This caused an ICE in #77306

bors added a commit to rust-lang-ci/rust that referenced this pull request Oct 6, 2020
Rollup of 11 pull requests

Successful merges:

 - rust-lang#76784 (Add some docs to rustdoc::clean::inline and def_id functions)
 - rust-lang#76911 (fix VecDeque::iter_mut aliasing issues)
 - rust-lang#77400 (Fix suggestions for x.py setup)
 - rust-lang#77515 (Update to chalk 0.31)
 - rust-lang#77568 (inliner: use caller param_env)
 - rust-lang#77571 (Use matches! for core::char methods)
 - rust-lang#77582 (Move `EarlyOtherwiseBranch` to mir-opt-level 2)
 - rust-lang#77590 (Update RLS and Rustfmt)
 - rust-lang#77605 (Fix rustc_def_path to show the full path and not the trimmed one)
 - rust-lang#77614 (Let backends access span information)
 - rust-lang#77624 (Add c as a shorthand check alternative for new options rust-lang#77603)

Failed merges:

r? `@ghost`
@bors bors merged commit 83c58d6 into rust-lang:master Oct 7, 2020
@rustbot rustbot added this to the 1.49.0 milestone Oct 7, 2020
@lcnr lcnr deleted the mir-inline-def-id branch October 7, 2020 08:01
JohnTitor added a commit to JohnTitor/rust that referenced this pull request Oct 10, 2020
require `Reveal::All` in `normalize_erasing_regions`

would have caught a bug in mir inlining, see rust-lang#77568 (comment)
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[ICE] in normalize_erasing_regions with mir-opt-level=2
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