Std: Clamp generates less efficient assembly than std:min(max,std:max(min,v))

• llvm-project

  349 25,563 10.0 C++

  The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.

  

So it was a bit more pervasive than this, the issue was that flushing subnormals (values very close to 0) to 0 is a register that gets set, so if a library is built with the fastmath flags and it gets loaded, it sets the register, causing the whole process to flush it's subnormals. i.e https://github.com/llvm/llvm-project/issues/57589

• gcc

  81 8,732 9.9 C
  

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• MuladdMacro.jl

  3 45 6.3 Julia

  This package contains a macro for converting expressions to use muladd calls and fused-multiply-add (FMA) operations for high-performance in the SciML scientific machine learning ecosystem

  

Totally agreed. In Julia we use https://github.com/SciML/MuladdMacro.jl all over the place so that way it's contextual and does not bleed into other functions. fast-math changing everything is just... dangerous.

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