Revert "[analyzer][Solver] Early return if sym is concrete on assuming" (#116362)

Reverts #115579

This introduced a breakage:
https://lab.llvm.org/buildbot/#/builders/46/builds/7928

Author: steakhal

clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp

@@ -1354,8 +1354,6 @@ void StdLibraryFunctionsChecker::checkPreCall(const CallEvent &Call,
             if (BR.isInteresting(ArgSVal))
               OS << Msg;
           }));
-      if (NewNode->isSink())
-        break;
     }
   }
 }

clang/lib/StaticAnalyzer/Core/ConstraintManager.cpp

@@ -74,7 +74,7 @@ ConstraintManager::assumeDualImpl(ProgramStateRef &State,
       // it might happen that a Checker uncoditionally uses one of them if the
       // other is a nullptr. This may also happen with the non-dual and
       // adjacent `assume(true)` and `assume(false)` calls. By implementing
-      // assume in terms of assumeDual, we can keep our API contract there as
+      // assume in therms of assumeDual, we can keep our API contract there as
       // well.
       return ProgramStatePair(StInfeasible, StInfeasible);
     }

clang/lib/StaticAnalyzer/Core/RangedConstraintManager.cpp

@@ -23,14 +23,7 @@ RangedConstraintManager::~RangedConstraintManager() {}
 ProgramStateRef RangedConstraintManager::assumeSym(ProgramStateRef State,
                                                    SymbolRef Sym,
                                                    bool Assumption) {
-  SVal SimplifiedVal = simplifyToSVal(State, Sym);
-  if (SimplifiedVal.isConstant()) {
-    bool Feasible = SimplifiedVal.isZeroConstant() != Assumption;
-    return Feasible ? State : nullptr;
-  }
-
-  if (SymbolRef SimplifiedSym = SimplifiedVal.getAsSymbol())
-    Sym = SimplifiedSym;
+  Sym = simplify(State, Sym);
 
   // Handle SymbolData.
   if (isa<SymbolData>(Sym))

clang/test/Analysis/solver-sym-simplification-on-assumption.c

@@ -28,13 +28,13 @@ void test(int a, int b, int c, int d) {
     return;
   clang_analyzer_printState();
   // CHECK:       "constraints": [
-  // CHECK-NEXT:    { "symbol": "((reg_$0<int a>) + (reg_$2<int c>)) != (reg_$3<int d>)", "range": "{ [0, 0] }" },
+  // CHECK-NEXT:    { "symbol": "(reg_$0<int a>) != (reg_$3<int d>)", "range": "{ [0, 0] }" },
   // CHECK-NEXT:    { "symbol": "reg_$1<int b>", "range": "{ [0, 0] }" },
   // CHECK-NEXT:    { "symbol": "reg_$2<int c>", "range": "{ [0, 0] }" }
   // CHECK-NEXT:  ],
   // CHECK-NEXT:  "equivalence_classes": [
-  // CHECK-NEXT:    [ "((reg_$0<int a>) + (reg_$2<int c>)) != (reg_$3<int d>)" ],
-  // CHECK-NEXT:    [ "(reg_$0<int a>) + (reg_$2<int c>)", "reg_$3<int d>" ],
+  // CHECK-NEXT:    [ "(reg_$0<int a>) != (reg_$3<int d>)" ],
+  // CHECK-NEXT:    [ "reg_$0<int a>", "reg_$3<int d>" ],
   // CHECK-NEXT:    [ "reg_$2<int c>" ]
   // CHECK-NEXT:  ],
   // CHECK-NEXT:  "disequality_info": null,