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Consider -fno-asynchronous-unwind-tables #13889

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pcwalton opened this issue May 2, 2014 · 3 comments
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Consider -fno-asynchronous-unwind-tables #13889

pcwalton opened this issue May 2, 2014 · 3 comments
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A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. I-slow Issue: Problems and improvements with respect to performance of generated code.

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@pcwalton
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pcwalton commented May 2, 2014

Apparently it helps reduce the amount of exception code generated by quite a bit.
@gereeter
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Is there any downside to this, or is this just yet to be done?

@frewsxcv
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Should the be moved to rust-lang/rfcs?

@alexcrichton
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In clang this just translates to -munwind-tables which translates to UnwindTables which later turns into the UWTable LLVM attribute. We don't apply this by default to Rust functions, so I think this is basically done.

flip1995 pushed a commit to flip1995/rust that referenced this issue Feb 6, 2025
@llogiq
fix: manual_unwrap_or_default suggests falsely when condition type …
e6d9641 
…is uncertain (rust-lang#13889)

fixes rust-lang#12670

Continuation of rust-lang#12688. r? @Jarcho if you don't mind?

changelog: [`manual_unwrap_or_default`] fix wrong suggestions when
condition type is uncertain
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A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. I-slow Issue: Problems and improvements with respect to performance of generated code.
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@alexcrichton @pcwalton @frewsxcv @gereeter