How to check if any word is zero

Re:How to check if any word is zero by thestoicattack on Thursday October 20, 2022 @03:07PM (#33279236)

GCC turns a fold over a parameter pack into test/sete and turns std::min == 0 into cmp/cmovg: https://godbolt.org/z/TjK7Gz74M

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Re:How to check if any word is zero by leni536 on Thursday October 20, 2022 @03:32PM (#33279524)

llvm-mca prefers the "fold" over the "min". Intuitively it's more pipelinable. The codegen for "min" has data dependencies that are not there for the "fold" version.

https://godbolt.org/z/1zjKP6z8q

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