cg_llvm: Remove the mod llvm_ hack, which should no longer be necessary
#136611
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
These were detected by temporarily making `mod llvm` non-public.
|
rustbot has assigned @petrochenkov. Use |
rustbot
added
S-waiting-on-review
|
nice @bors r+ rollup |
bors
added
S-waiting-on-bors
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Feb 6, 2025
…kingjubilee Rollup of 13 pull requests Successful merges: - rust-lang#133932 (Avoid using make_direct_deprecated() in extern "ptx-kernel") - rust-lang#136269 (Pass spans around new solver) - rust-lang#136550 (Fix `rustc_hidden_type_of_opaques` for RPITITs with no default body) - rust-lang#136558 (Document minimum supported host tooling on macOS) - rust-lang#136563 (Clean up `Trivial*Impls` macros) - rust-lang#136566 (Fix link in from_fn.rs) - rust-lang#136573 (Document why some "type mismatches" exist) - rust-lang#136583 (Only highlight unmatchable parameters at the definition site) - rust-lang#136587 (Update browser-ui-test version to `0.20.2`) - rust-lang#136590 (Implement RustcInternal for RawPtrKind) - rust-lang#136591 (Add `rustc_hir_pretty::expr_to_string` function) - rust-lang#136595 (Fix `unreachable_pub` lint for hermit target) - rust-lang#136611 (cg_llvm: Remove the `mod llvm_` hack, which should no longer be necessary) Failed merges: - rust-lang#136565 (compiler: Clean up weird `rustc_abi` reexports) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Feb 6, 2025
Rollup merge of rust-lang#136611 - Zalathar:llvm-underscore, r=workingjubilee cg_llvm: Remove the `mod llvm_` hack, which should no longer be necessary This re-export was introduced in rust-lang@c76fc3d, as a workaround for rust-lang#53912. In short, there was/is an assumption in some LLVM LTO code that symbol names would not contain `.llvm.`, but legacy symbol mangling would naturally produce that sequence for symbols in a module named `llvm`. This was later “fixed” by adding a special case to the legacy symbol mangler in rust-lang#61195, which detects the sequence `llvm` and emits the `m` in an escaped form. As a result, there should no longer be any need to avoid the module name `llvm` in the compiler itself. (Symbol mangling v0 avoids this problem by not using `.` in the first place, outside of the “vendor-specific suffix”.)
github-actions bot
pushed a commit
to tautschnig/verify-rust-std
that referenced
this pull request
Mar 11, 2025
…kingjubilee Rollup of 13 pull requests Successful merges: - rust-lang#133932 (Avoid using make_direct_deprecated() in extern "ptx-kernel") - rust-lang#136269 (Pass spans around new solver) - rust-lang#136550 (Fix `rustc_hidden_type_of_opaques` for RPITITs with no default body) - rust-lang#136558 (Document minimum supported host tooling on macOS) - rust-lang#136563 (Clean up `Trivial*Impls` macros) - rust-lang#136566 (Fix link in from_fn.rs) - rust-lang#136573 (Document why some "type mismatches" exist) - rust-lang#136583 (Only highlight unmatchable parameters at the definition site) - rust-lang#136587 (Update browser-ui-test version to `0.20.2`) - rust-lang#136590 (Implement RustcInternal for RawPtrKind) - rust-lang#136591 (Add `rustc_hir_pretty::expr_to_string` function) - rust-lang#136595 (Fix `unreachable_pub` lint for hermit target) - rust-lang#136611 (cg_llvm: Remove the `mod llvm_` hack, which should no longer be necessary) Failed merges: - rust-lang#136565 (compiler: Clean up weird `rustc_abi` reexports) r? `@ghost` `@rustbot` modify labels: rollup
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
5 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This re-export was introduced in c76fc3d, as a workaround for #53912.
In short, there was/is an assumption in some LLVM LTO code that symbol names would not contain
.llvm., but legacy symbol mangling would sometimes naturally produce that sequence in the presence of a module namedllvm.This was later “fixed” by adding a special case to the legacy symbol mangler in #61195, which detects the sequence
llvmand emits themin an escaped form. As a result, there should no longer be any need to avoid the module namellvmin the compiler itself.(Symbol mangling v0 avoids this problem by not using
.in the first place, outside of the “vendor-specific suffix”.)