rustc_codegen_llvm: Enforce rustc::potential_query_instability lint
#118865
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Stop allowing `rustc::potential_query_instability` on all of `rustc_codegen_llvm` and instead allow it on a case-by-case basis. In this case, both instances are safe to allow.
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@bors r+ rollup |
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#116740 (dont ICE when ConstKind::Expr for is_const_evaluatable) - rust-lang#117914 (On borrow return type, suggest borrowing from arg or owned return type) - rust-lang#117927 (Clarify how to choose a FutureIncompatibilityReason variant.) - rust-lang#118855 (Improve an error involving attribute values.) - rust-lang#118856 (rustdoc-search: clean up parser) - rust-lang#118865 (rustc_codegen_llvm: Enforce `rustc::potential_query_instability` lint) - rust-lang#118866 (llvm-wrapper: adapt for LLVM API change) - rust-lang#118868 (Correctly gate the parsing of match arms without body) - rust-lang#118877 (tests: CGU tests require build-pass, not check-pass (remove FIXME)) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#118865 - Enselic:rustc_codegen_llvm-lint-fix, r=petrochenkov rustc_codegen_llvm: Enforce `rustc::potential_query_instability` lint Stop allowing `rustc::potential_query_instability` on all of `rustc_codegen_llvm` and instead allow it on a case-by-case basis if it is safe to do so. In this case, all 2 instances are safe to allow. Part of rust-lang#84447 which is E-help-wanted.
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When rust-lang#118865 started enforcing the `rustc::potential_query_instability` lint in `rustc_codegen_llvm`, it added an exemption for this site, arguing that the entries are only used to create a list of filenames that is later sorted. However, the list of entries also gets traversed when creating the function coverage records in LLVM IR, which may be sensitive to hash-based ordering. This patch therefore changes `function_coverage_map` to use `FxIndexMap`, which should avoid hash-based instability by iterating in insertion order.
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Jan 3, 2024
…wiser coverage: Avoid a query stability hazard in `function_coverage_map` When rust-lang#118865 started enforcing the `rustc::potential_query_instability` lint in `rustc_codegen_llvm`, it added an exemption for this site, arguing that the entries are only used to create a list of filenames that is later sorted. However, the list of entries also gets traversed when creating the function coverage records in LLVM IR, which may be sensitive to hash-based ordering. This patch therefore changes `function_coverage_map` to use `FxIndexMap`, which should avoid hash-based instability by iterating in insertion order. cc `@Enselic`
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Jan 3, 2024
…wiser coverage: Avoid a query stability hazard in `function_coverage_map` When rust-lang#118865 started enforcing the `rustc::potential_query_instability` lint in `rustc_codegen_llvm`, it added an exemption for this site, arguing that the entries are only used to create a list of filenames that is later sorted. However, the list of entries also gets traversed when creating the function coverage records in LLVM IR, which may be sensitive to hash-based ordering. This patch therefore changes `function_coverage_map` to use `FxIndexMap`, which should avoid hash-based instability by iterating in insertion order. cc ``@Enselic``
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Jan 3, 2024
Rollup merge of rust-lang#119514 - Zalathar:query-stability, r=wesleywiser coverage: Avoid a query stability hazard in `function_coverage_map` When rust-lang#118865 started enforcing the `rustc::potential_query_instability` lint in `rustc_codegen_llvm`, it added an exemption for this site, arguing that the entries are only used to create a list of filenames that is later sorted. However, the list of entries also gets traversed when creating the function coverage records in LLVM IR, which may be sensitive to hash-based ordering. This patch therefore changes `function_coverage_map` to use `FxIndexMap`, which should avoid hash-based instability by iterating in insertion order. cc ``@Enselic``
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Stop allowing
rustc::potential_query_instabilityon all ofrustc_codegen_llvmand instead allow it on a case-by-case basis if it is safe to do so. In this case, all 2 instances are safe to allow.Part of #84447 which is E-help-wanted.