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simplify LLVM submodule handling #130918

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merged 1 commit into from
Sep 28, 2024
Merged

simplify LLVM submodule handling #130918

merged 1 commit into from
Sep 28, 2024

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onur-ozkan
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@onur-ozkan onur-ozkan commented Sep 27, 2024 •
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Fixes #130906.

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rustbot commented Sep 27, 2024

r? @albertlarsan68

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@rustbot rustbot added 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 Sep 27, 2024
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rustbot commented Sep 27, 2024

This PR changes how LLVM is built. Consider updating src/bootstrap/download-ci-llvm-stamp.

This PR modifies src/bootstrap/src/core/config.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

Kobzol
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I don't like this change very much, tbh, as I'd like to move as much side-effect heavy and command-invocking logic as possible from Config parsing. It does not seem very intuitive that we check out a git submodule while parsing a config option. The previous code was also quite clear in that it only updated LLVM if it was already checked out, and initialized the submodule only if it wasn't downloaded in the meantime.

It seems like there is some different bug going on? The existing code should explicitly not check out LLVM if it was downloaded.

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I don't like this change very much, tbh, as I'd like to move as much side-effect heavy and command-invocking logic as possible from Config parsing. It does not seem very intuitive that we check out a git submodule while parsing a config option.

Yeah, agreed.

It seems like there is some different bug going on? The existing code should explicitly not check out LLVM if it was downloaded.

I'm not sure what to call it but it's not exactly a "bug". The mir-opt test involves some cross-targeting and when it's run with the --bless flag, and then this line calls llvm::prebuilt_llvm_config with a different target which bypasses the early return for CI LLVM. a126c56 should handle the situation in a better way than the previous attempt.

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Kobzol commented Sep 27, 2024

@bors r+

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bors commented Sep 27, 2024

📌 Commit cd1b245 has been approved by Kobzol

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 Sep 27, 2024
@matthiaskrgr matthiaskrgr mentioned this pull request Sep 28, 2024
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bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 28, 2024
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Auto merge of rust-lang#130979 - matthiaskrgr:rollup-u7ylca5, r=matth…
e6eb451 
…iaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#128778 (atomics: allow atomic and non-atomic reads to race)
 - rust-lang#130918 (simplify LLVM submodule handling)
 - rust-lang#130960 (Only add an automatic SONAME for Rust dylibs)
 - rust-lang#130973 (compiletest: rename "runtest/crash.rs" to "runtest/crashes.rs" to be in line with the test directory)
 - rust-lang#130976 (remove couple redundant clones)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit f33fa3f into rust-lang:master Sep 28, 2024
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@rustbot rustbot added this to the 1.83.0 milestone Sep 28, 2024
@onur-ozkan onur-ozkan deleted the better-llvm-submodule-handling branch September 28, 2024 17:11
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Sep 28, 2024
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Unrolled build for rust-lang#130918
357b800 
Rollup merge of rust-lang#130918 - onur-ozkan:better-llvm-submodule-handling, r=Kobzol

simplify LLVM submodule handling

Fixes rust-lang#130906.
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Successfully merging this pull request may close these issues.

x test mir-opt --bless tries to checkout src/llvm-project
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