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by gnufx
1790 days ago
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I took the example program from the OpenMP standard and built it with GCC 11 -Ofast. -fopt-info said the relevant loop was vectorized. Adding -fopenmp gave more vectorization messages from elsewhere, but I don't have time to figure out the difference from the tree dump (not being good with assembler). Doubtless the directives can help, but you do need to get them right, and I trust GCC more than me! |
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