LLVM's Flang Compiler Adds -Ofast & -ffast-math Support

phoronix

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LLVM's Flang Compiler Adds -Ofast & -ffast-math Support

14 December 2022, 02:10 PM

Phoronix: LLVM's Flang Compiler Adds -Ofast & -ffast-math Support

Flang as LLVM's Fortran language front-end has landed support for the -Ofast and -ffast-math compiler flags...

LLVM's Flang Compiler Adds -Ofast & -ffast-math Support - Phoronix

https://www.phoronix.com/news/Flang-Ofast-ffast-math

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coder

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14 December 2022, 02:16 PM

-fassociative-math

Heh, I remember when I first discovered that non-associativity of FP operations was bottlenecking my code. Simply adding some ()'s won me a 2-3x speedup of that loop.
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