[PATCH] D130519: [clang][dataflow] Add explicit "AST" nodes for implications and iff

[Dmitri Gribenko via Phabricator via cfe-commits]

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Previously we used to desugar implications and biconditionals into
equivalent CNF/DNF as soon as possible. However, this desugaring makes
debug output (Environment::dump()) less readable than it could be.
Therefore, it makes sense to keep the sugared representation of a
boolean formula, and desugar it in the solver.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130519

Files:
  clang/include/clang/Analysis/FlowSensitive/DataflowAnalysisContext.h
  clang/include/clang/Analysis/FlowSensitive/Value.h
  clang/lib/Analysis/FlowSensitive/DataflowAnalysisContext.cpp
  clang/lib/Analysis/FlowSensitive/DebugSupport.cpp
  clang/lib/Analysis/FlowSensitive/WatchedLiteralsSolver.cpp
  clang/unittests/Analysis/FlowSensitive/DataflowAnalysisContextTest.cpp
  clang/unittests/Analysis/FlowSensitive/DebugSupportTest.cpp
  clang/unittests/Analysis/FlowSensitive/SolverTest.cpp
  clang/unittests/Analysis/FlowSensitive/TestingSupport.h

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