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A comment on Closing the gap: cross-language LTO between Rust and C/C++. Parent comment

Re:Closing the gap: cross-language LTO between Rust and C/C++ by ridiculous_fish on Thursday September 19, 2019 @09:41PM (#21022558)
Why doesn't Swift play that role?
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Re:Closing the gap: cross-language LTO between Rust and C/C++ by sanxiyn on Thursday September 19, 2019 @09:44PM (#21022580)
In fact I am not sure why... I am just reporting the experience. Maybe because of architectural coverage, because while bugs also happen in architecture-independent optimizations, more bugs happen in, say, PowerPC backend.

Edit: Another possibility is difference between how often Rust and Swift update to LLVM trunk. Both have LLVM fork pinned to specific version updated from time to time and I guess the first to update gets all the bugs.

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Re:Closing the gap: cross-language LTO between Rust and C/C++ by masklinn on Friday September 20, 2019 @01:45AM (#21023610)
Possibly because Swift being more of an application language, Swift codebases in general have very little use for overflowing operations?
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Re:Closing the gap: cross-language LTO between Rust and C/C++ by sanxiyn on Friday September 20, 2019 @04:49AM (#21024528)
No, it's not that. All Swift arithmetic compiles to overflow intrinsics.
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