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Part of #121876 and the associated Google Summer of Code project.

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rustbot commented May 17, 2024

r? @jieyouxu

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@rustbot rustbot added A-testsuite Area: The testsuite used to check the correctness of rustc S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) labels May 17, 2024
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rustbot commented May 17, 2024

Some changes occurred in run-make tests.

cc @jieyouxu

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rustbot commented May 17, 2024

The run-make-support library was changed

cc @jieyouxu

@@ -0,0 +1,14 @@
// In the rustc_trans crate, references returned by a Frozen pointer type
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This comment is outdated, we don't have a rustc_trans crate anymore do we?

@@ -0,0 +1,14 @@
// In the rustc_trans crate, references returned by a Frozen pointer type
// could mark them as "noalias", which caused miscompilation errors.
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I feel this should be a codegen test if we're trying to check for noalias metadata?

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I'll revisit this, this seems like it should be a codegen test

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See codegen tests for more references, please do ask me if you are stuck or have any questions.

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@rustbot rustbot 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-review Status: Awaiting review from the assignee but also interested parties. labels May 21, 2024
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I have attempted the conversion to a codegen test, more so we can discuss it than claim "it's done". Seeing the other tests putting their flags on library functions and not main() makes me a little worried (I took inspiration from other noalias-related codegen tests such as noalias-box.rs.)

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@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 May 22, 2024
Comment on lines 13 to 21
// CHECK-NOT: noalias
fn main() {
let f = (dummy as fn(),);
(*project(&f))();
}
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Suggestion: I think this test could be written as

//@ compile-flags: -Copt-level=1

#![crate_type = "lib"]

fn project<T>(x: &(T,)) -> &T { &x.0 }

fn dummy() {}

// CHECK-LABEL: @foo(
// CHECK-NOT: noalias
#[no_mangle]
pub fn foo() {
    let f = (dummy as fn(),);
    (*project(&f))();
}

This way the noalias check must happen after the foo label occurs.

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@rustbot rustbot 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-review Status: Awaiting review from the assignee but also interested parties. labels May 23, 2024
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@rustbot review

Thanks for the suggestion! I'm just now learning how the codegen tests work, and I see how you made it more similar to the other codegen tests, and prevented the name foo from being altered by compilation with no-mangle.

@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 May 23, 2024
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Thanks, r=me after squashing commits into one.
@bors delegate+

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bors commented May 23, 2024

✌️ @Oneirical, you can now approve this pull request!

If @jieyouxu told you to "r=me" after making some further change, please make that change, then do @bors r=@jieyouxu

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@bors r=@jieyouxu

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bors commented May 23, 2024

📌 Commit ddb81ce has been approved by jieyouxu

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 May 23, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request May 23, 2024
…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#122665 (Add some tests for public-private dependencies.)
 - rust-lang#123623 (Fix OutsideLoop's error suggestion: adding label `'block` for `if` block.)
 - rust-lang#125054 (Handle `ReVar` in `note_and_explain_region`)
 - rust-lang#125156 (Expand `for_loops_over_fallibles` lint to lint on fallibles behind references.)
 - rust-lang#125222 (Migrate `run-make/issue-46239` to `rmake`)
 - rust-lang#125316 (Tweak `Spacing` use)
 - rust-lang#125392 (Wrap Context.ext in AssertUnwindSafe)
 - rust-lang#125417 (self-contained linker: retry linking without `-fuse-ld=lld` on CCs that don't support it)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit f131ee6 into rust-lang:master May 23, 2024
@rustbot rustbot added this to the 1.80.0 milestone May 23, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request May 23, 2024
Rollup merge of rust-lang#125222 - Oneirical:fifth, r=jieyouxu

Migrate `run-make/issue-46239` to `rmake`

Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
@Oneirical Oneirical deleted the fifth branch May 23, 2024 13:48
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