Stanislav Blinov:

ldc2 -release -O3 -disable-boundscheck -vectorize -vectorize-loops

All my versions of ldc2 don't even accept -vectorize :-)

ldc2: Unknown command line argument '-vectorize'. Try: 'ldc2 -help'
ldc2: Did you mean '-vectorize-slp'?

And -vectorize-loops should be active on default on recent versions of ldc2 (including V.0.12.1), and indeed I see no performance difference in using it.

Bye,
bearophile

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