CodeQL library for Ruby
codeql/ruby-all 2.0.4-dev (changelog, source)
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Predicate Make::SsaDefReaches::ssaRefNonPhiRead

Holds if the ith node of basic block bb is a reference to v, and this reference is not a phi-read.

Import path

import codeql.ssa.Ssa
predicate ssaRefNonPhiRead(BasicBlock bb, int i, SourceVariable v)