[analyzer] Assume that we always have a SubEngine available

The removed codepath was dead.

Differential Revision: https://reviews.llvm.org/D55697

llvm-svn: 349266

7 files changed, 36 insertions, 49 deletions

diff --git a/clang/lib/StaticAnalyzer/Checkers/AnalysisOrderChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/AnalysisOrderChecker.cpp
index f9cf97e5083..590bdd20ad1 100644
--- a/clang/lib/StaticAnalyzer/Checkers/AnalysisOrderChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/AnalysisOrderChecker.cpp
@@ -56,7 +56,7 @@ class AnalysisOrderChecker
 
   bool isCallbackEnabled(ProgramStateRef State, StringRef CallbackName) const {
     AnalyzerOptions &Opts = State->getStateManager().getOwningEngine()
-                                 ->getAnalysisManager().getAnalyzerOptions();
+                                 .getAnalysisManager().getAnalyzerOptions();
     return isCallbackEnabled(Opts, CallbackName);
   }
 
diff --git a/clang/lib/StaticAnalyzer/Core/CallEvent.cpp b/clang/lib/StaticAnalyzer/Core/CallEvent.cpp
index 8d9338b21c1..20baa302658 100644
--- a/clang/lib/StaticAnalyzer/Core/CallEvent.cpp
+++ b/clang/lib/StaticAnalyzer/Core/CallEvent.cpp
@@ -550,15 +550,15 @@ RuntimeDefinition AnyFunctionCall::getRuntimeDefinition() const {
     return RuntimeDefinition(Decl);
   }
 
-  SubEngine *Engine = getState()->getStateManager().getOwningEngine();
-  AnalyzerOptions &Opts = Engine->getAnalysisManager().options;
+  SubEngine &Engine = getState()->getStateManager().getOwningEngine();
+  AnalyzerOptions &Opts = Engine.getAnalysisManager().options;
 
   // Try to get CTU definition only if CTUDir is provided.
   if (!Opts.IsNaiveCTUEnabled)
     return {};
 
   cross_tu::CrossTranslationUnitContext &CTUCtx =
-      *Engine->getCrossTranslationUnitContext();
+      *Engine.getCrossTranslationUnitContext();
   llvm::Expected<const FunctionDecl *> CTUDeclOrError =
       CTUCtx.getCrossTUDefinition(FD, Opts.CTUDir, Opts.CTUIndexName,
                                   Opts.DisplayCTUProgress);
@@ -1087,7 +1087,7 @@ bool ObjCMethodCall::canBeOverridenInSubclass(ObjCInterfaceDecl *IDecl,
                                              Selector Sel) const {
   assert(IDecl);
   AnalysisManager &AMgr =
-      getState()->getStateManager().getOwningEngine()->getAnalysisManager();
+      getState()->getStateManager().getOwningEngine().getAnalysisManager();
   // If the class interface is declared inside the main file, assume it is not
   // subcassed.
   // TODO: It could actually be subclassed if the subclass is private as well.
diff --git a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
index 45d0df7ae45..151eef56fec 100644
--- a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
@@ -2951,8 +2951,8 @@ struct DOTGraphTraits<ExplodedGraph*> : public DefaultDOTGraphTraits {
   DOTGraphTraits (bool isSimple = false) : DefaultDOTGraphTraits(isSimple) {}
 
   static bool nodeHasBugReport(const ExplodedNode *N) {
-    BugReporter &BR = static_cast<ExprEngine *>(
-      N->getState()->getStateManager().getOwningEngine())->getBugReporter();
+    BugReporter &BR = static_cast<ExprEngine &>(
+      N->getState()->getStateManager().getOwningEngine()).getBugReporter();
 
     const auto EQClasses =
         llvm::make_range(BR.EQClasses_begin(), BR.EQClasses_end());
diff --git a/clang/lib/StaticAnalyzer/Core/ProgramState.cpp b/clang/lib/StaticAnalyzer/Core/ProgramState.cpp
index ceb4fbdf784..2e2e2ec94f3 100644
--- a/clang/lib/StaticAnalyzer/Core/ProgramState.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ProgramState.cpp
@@ -125,8 +125,8 @@ ProgramStateRef ProgramState::bindLoc(Loc LV,
   ProgramStateRef newState = makeWithStore(Mgr.StoreMgr->Bind(getStore(),
                                                              LV, V));
   const MemRegion *MR = LV.getAsRegion();
-  if (MR && Mgr.getOwningEngine() && notifyChanges)
-    return Mgr.getOwningEngine()->processRegionChange(newState, MR, LCtx);
+  if (MR && notifyChanges)
+    return Mgr.getOwningEngine().processRegionChange(newState, MR, LCtx);
 
   return newState;
 }
@@ -138,9 +138,7 @@ ProgramState::bindDefaultInitial(SVal loc, SVal V,
   const MemRegion *R = loc.castAs<loc::MemRegionVal>().getRegion();
   const StoreRef &newStore = Mgr.StoreMgr->BindDefaultInitial(getStore(), R, V);
   ProgramStateRef new_state = makeWithStore(newStore);
-  return Mgr.getOwningEngine()
-             ? Mgr.getOwningEngine()->processRegionChange(new_state, R, LCtx)
-             : new_state;
+  return Mgr.getOwningEngine().processRegionChange(new_state, R, LCtx);
 }
 
 ProgramStateRef
@@ -149,9 +147,7 @@ ProgramState::bindDefaultZero(SVal loc, const LocationContext *LCtx) const {
   const MemRegion *R = loc.castAs<loc::MemRegionVal>().getRegion();
   const StoreRef &newStore = Mgr.StoreMgr->BindDefaultZero(getStore(), R);
   ProgramStateRef new_state = makeWithStore(newStore);
-  return Mgr.getOwningEngine()
-             ? Mgr.getOwningEngine()->processRegionChange(new_state, R, LCtx)
-             : new_state;
+  return Mgr.getOwningEngine().processRegionChange(new_state, R, LCtx);
 }
 
 typedef ArrayRef<const MemRegion *> RegionList;
@@ -196,41 +192,34 @@ ProgramState::invalidateRegionsImpl(ValueList Values,
                                     RegionAndSymbolInvalidationTraits *ITraits,
                                     const CallEvent *Call) const {
   ProgramStateManager &Mgr = getStateManager();
-  SubEngine* Eng = Mgr.getOwningEngine();
+  SubEngine &Eng = Mgr.getOwningEngine();
 
-  InvalidatedSymbols Invalidated;
+  InvalidatedSymbols InvalidatedSyms;
   if (!IS)
-    IS = &Invalidated;
+    IS = &InvalidatedSyms;
 
   RegionAndSymbolInvalidationTraits ITraitsLocal;
   if (!ITraits)
     ITraits = &ITraitsLocal;
 
-  if (Eng) {
-    StoreManager::InvalidatedRegions TopLevelInvalidated;
-    StoreManager::InvalidatedRegions Invalidated;
-    const StoreRef &newStore
-    = Mgr.StoreMgr->invalidateRegions(getStore(), Values, E, Count, LCtx, Call,
-                                      *IS, *ITraits, &TopLevelInvalidated,
-                                      &Invalidated);
-
-    ProgramStateRef newState = makeWithStore(newStore);
-
-    if (CausedByPointerEscape) {
-      newState = Eng->notifyCheckersOfPointerEscape(newState, IS,
-                                                    TopLevelInvalidated,
-                                                    Call,
-                                                    *ITraits);
-    }
+  StoreManager::InvalidatedRegions TopLevelInvalidated;
+  StoreManager::InvalidatedRegions Invalidated;
+  const StoreRef &newStore
+  = Mgr.StoreMgr->invalidateRegions(getStore(), Values, E, Count, LCtx, Call,
+                                    *IS, *ITraits, &TopLevelInvalidated,
+                                    &Invalidated);
+
+  ProgramStateRef newState = makeWithStore(newStore);
 
-    return Eng->processRegionChanges(newState, IS, TopLevelInvalidated,
-                                     Invalidated, LCtx, Call);
+  if (CausedByPointerEscape) {
+    newState = Eng.notifyCheckersOfPointerEscape(newState, IS,
+                                                 TopLevelInvalidated,
+                                                 Call,
+                                                 *ITraits);
   }
 
-  const StoreRef &newStore =
-  Mgr.StoreMgr->invalidateRegions(getStore(), Values, E, Count, LCtx, Call,
-                                  *IS, *ITraits, nullptr, nullptr);
-  return makeWithStore(newStore);
+  return Eng.processRegionChanges(newState, IS, TopLevelInvalidated,
+                                  Invalidated, LCtx, Call);
 }
 
 ProgramStateRef ProgramState::killBinding(Loc LV) const {
@@ -474,7 +463,7 @@ void ProgramState::print(raw_ostream &Out,
   printTaint(Out, NL);
 
   // Print checker-specific data.
-  Mgr.getOwningEngine()->printState(Out, this, NL, Sep, LC);
+  Mgr.getOwningEngine().printState(Out, this, NL, Sep, LC);
 }
 
 void ProgramState::printDOT(raw_ostream &Out,
@@ -503,7 +492,7 @@ void ProgramState::dumpTaint() const {
 }
 
 AnalysisManager& ProgramState::getAnalysisManager() const {
-  return stateMgr->getOwningEngine()->getAnalysisManager();
+  return stateMgr->getOwningEngine().getAnalysisManager();
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/clang/lib/StaticAnalyzer/Core/RegionStore.cpp b/clang/lib/StaticAnalyzer/Core/RegionStore.cpp
index f5eb9b5e72d..b2339be4f26 100644
--- a/clang/lib/StaticAnalyzer/Core/RegionStore.cpp
+++ b/clang/lib/StaticAnalyzer/Core/RegionStore.cpp
@@ -347,11 +347,9 @@ public:
     : StoreManager(mgr), Features(f),
       RBFactory(mgr.getAllocator()), CBFactory(mgr.getAllocator()),
       SmallStructLimit(0) {
-    if (SubEngine *Eng = StateMgr.getOwningEngine()) {
-      AnalyzerOptions &Options = Eng->getAnalysisManager().options;
-      SmallStructLimit =
-        Options.RegionStoreSmallStructLimit;
-    }
+    SubEngine &Eng = StateMgr.getOwningEngine();
+    AnalyzerOptions &Options = Eng.getAnalysisManager().options;
+    SmallStructLimit = Options.RegionStoreSmallStructLimit;
   }
 
 
diff --git a/clang/lib/StaticAnalyzer/Core/SValBuilder.cpp b/clang/lib/StaticAnalyzer/Core/SValBuilder.cpp
index 617c4ba27d4..aeb27fefed9 100644
--- a/clang/lib/StaticAnalyzer/Core/SValBuilder.cpp
+++ b/clang/lib/StaticAnalyzer/Core/SValBuilder.cpp
@@ -384,7 +384,7 @@ SVal SValBuilder::makeSymExprValNN(BinaryOperator::Opcode Op,
   // TODO: When the Max Complexity is reached, we should conjure a symbol
   // instead of generating an Unknown value and propagate the taint info to it.
   const unsigned MaxComp = StateMgr.getOwningEngine()
-                               ->getAnalysisManager()
+                               .getAnalysisManager()
                                .options.MaxSymbolComplexity;
 
   if (symLHS && symRHS &&
diff --git a/clang/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp b/clang/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
index 2f6a0c8ffcf..fc57cecac9c 100644
--- a/clang/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
+++ b/clang/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
@@ -454,7 +454,7 @@ static Optional<NonLoc> tryRearrange(ProgramStateRef State,
   QualType SingleTy;
 
   auto &Opts =
-    StateMgr.getOwningEngine()->getAnalysisManager().getAnalyzerOptions();
+    StateMgr.getOwningEngine().getAnalysisManager().getAnalyzerOptions();
 
   // FIXME: After putting complexity threshold to the symbols we can always
   //        rearrange additive operations but rearrange comparisons only if