llvm-codegen Archives

Why is there a large performance impact when looping over an array with 240 or more elements?

When running a sum loop over an array in Rust, I noticed a huge performance drop when CAPACITY >= 240. CAPACITY = 239 ...

May 22, 2022
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Why does the Rust compiler not optimize code assuming that two mutable references cannot alias?

As far as I know, reference/pointer aliasing can hinder the compiler’s ability to generate optimized code, since they must ensure the generated binary ...

May 10, 2022
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Does the C++ standard allow for an uninitialized bool to crash a program?

I know that an “undefined behaviour” in C++ can pretty much allow the compiler to do anything it wants. However, I had a ...

May 1, 2022
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