Revert "[dataflow] Add dedicated representation of boolean formulas"

This reverts commit 2fd614efc1bb9c27f1bc6c3096c60a7fe121e274.

Commit caused failures on the following two build bots:
  http://45.33.8.238/win/80815/step_7.txt
  https://lab.llvm.org/buildbot/#/builders/139/builds/44269

1 files changed, 5 insertions, 18 deletions

diff --git a/clang/lib/Analysis/FlowSensitive/DataflowAnalysisContext.cpp b/clang/lib/Analysis/FlowSensitive/DataflowAnalysisContext.cpp
index 42cc6d4..37bcc8b 100644
--- a/clang/lib/Analysis/FlowSensitive/DataflowAnalysisContext.cpp
+++ b/clang/lib/Analysis/FlowSensitive/DataflowAnalysisContext.cpp
@@ -15,7 +15,6 @@
 #include "clang/Analysis/FlowSensitive/DataflowAnalysisContext.h"
 #include "clang/AST/ExprCXX.h"
 #include "clang/Analysis/FlowSensitive/DebugSupport.h"
-#include "clang/Analysis/FlowSensitive/Formula.h"
 #include "clang/Analysis/FlowSensitive/Logger.h"
 #include "clang/Analysis/FlowSensitive/Value.h"
 #include "llvm/ADT/SetOperations.h"
@@ -24,12 +23,9 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"
-#include "llvm/Support/raw_ostream.h"
 #include <cassert>
 #include <memory>
-#include <string>
 #include <utility>
-#include <vector>
 
 static llvm::cl::opt<std::string> DataflowLog(
     "dataflow-log", llvm::cl::Hidden, llvm::cl::ValueOptional,
@@ -133,10 +129,7 @@ Solver::Result
 DataflowAnalysisContext::querySolver(llvm::SetVector<BoolValue *> Constraints) {
   Constraints.insert(&arena().makeLiteral(true));
   Constraints.insert(&arena().makeNot(arena().makeLiteral(false)));
-  std::vector<const Formula *> Formulas;
-  for (const BoolValue *Constraint : Constraints)
-    Formulas.push_back(&arena().getFormula(*Constraint));
-  return S->solve(Formulas);
+  return S->solve(Constraints.getArrayRef());
 }
 
 bool DataflowAnalysisContext::flowConditionImplies(AtomicBoolValue &Token,
@@ -198,21 +191,15 @@ void DataflowAnalysisContext::addTransitiveFlowConditionConstraints(
 
 void DataflowAnalysisContext::dumpFlowCondition(AtomicBoolValue &Token,
                                                 llvm::raw_ostream &OS) {
-  // TODO: accumulate formulas directly instead
   llvm::SetVector<BoolValue *> Constraints;
   Constraints.insert(&Token);
   llvm::DenseSet<AtomicBoolValue *> VisitedTokens;
   addTransitiveFlowConditionConstraints(Token, Constraints, VisitedTokens);
 
-  // TODO: have formulas know about true/false directly instead
-  Atom True = arena().getFormula(arena().makeLiteral(true)).getAtom();
-  Atom False = arena().getFormula(arena().makeLiteral(false)).getAtom();
-  Formula::AtomNames Names = {{False, "false"}, {True, "true"}};
-
-  for (const auto *Constraint : Constraints) {
-    arena().getFormula(*Constraint).print(OS, &Names);
-    OS << "\n";
-  }
+  llvm::DenseMap<const AtomicBoolValue *, std::string> AtomNames = {
+      {&arena().makeLiteral(false), "False"},
+      {&arena().makeLiteral(true), "True"}};
+  OS << debugString(Constraints.getArrayRef(), AtomNames);
 }
 
 const ControlFlowContext *