Introduce iteration space dependency analysis [DO NOT MERGE YET] #87
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Currently, the loops inside a parallelized subroutine are safely annotated with an
!$acc loop seqdirective in order to ensure a correct result. Some of those loops, have no dependency and could be parallelized some more. TheDependenceAnalysisintroduces some basic dependency analysis ability to decide which directive should be generated.See issue: #83