![]() It is possible that your code won't give you the same results in -O3 as in -O2. It provokes a more exhaustive analysis of data dependency and, therefore, can increase the compilation time. It provokes a more exhaustive analysis of data dependency and, therefore, can increase the compilation time.Īllows the total activation of AVX512 vectorisation. Optimisations are more aggressive than in -O2, with prefetching, loop transformations, code duplication, etc.Īllows activation of the AVX2 vectorisation, and partially of AVX512. Level of optimisation which includes vectorisation, inlining, loop unrolling, inter-procedural optimisation within each source file, etc. Some optimisations are performed which allow moderate acceleration of the calculations.
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