CodeQL library for Ruby
codeql/ruby-all 4.1.0 (changelog, source)
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Member predicate Make::BasicBlockImpl::inDominanceFrontier

Holds if df is in the dominance frontier of this basic block. That is, this basic block dominates a predecessor of df, but does not dominate df itself. I.e., it is equivaluent to:

this.dominates(df.getAPredecessor()) and not this.strictlyDominates(df)
predicate inDominanceFrontier(BasicBlock df)