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[return to "Std: Clamp generates less efficient assembly than std:min(max,std:max(min,v))"]
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1. tambre+2i[view] [source] 2024-01-16 13:21:16
>>x1f604+(OP)
Both recent GCC and Clang are able to generate the most optimal version for std::clamp() if you add something like -march=znver1, even at -O1 [0]. Interesting!

[0] https://godbolt.org/z/YsMMo7Kjz

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2. x1f604+Jd7[view] [source] 2024-01-18 09:06:09
>>tambre+2i
Even with -march=znver1 at -O3 the compiler still generates fewer lines of assembly for the incorrect clamp compared to the correct clamp for this "realistic" code:

https://godbolt.org/z/WMKbeq5TY

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