[clang] [analyzer] Enforce not making overly complicated symbols (PR #144327)

[Donát Nagy via cfe-commits]

================
@@ -317,21 +317,21 @@ class SValBuilder {
     return nonloc::LocAsInteger(BasicVals.getPersistentSValWithData(loc, 
bits));
   }
 
-  nonloc::SymbolVal makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode op,
-                               APSIntPtr rhs, QualType type);
+  DefinedOrUnknownSVal makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode 
op,
+                                  APSIntPtr rhs, QualType type);
 
-  nonloc::SymbolVal makeNonLoc(APSIntPtr rhs, BinaryOperator::Opcode op,
-                               const SymExpr *lhs, QualType type);
+  DefinedOrUnknownSVal makeNonLoc(APSIntPtr rhs, BinaryOperator::Opcode op,
+                                  const SymExpr *lhs, QualType type);
 
-  nonloc::SymbolVal makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode op,
-                               const SymExpr *rhs, QualType type);
+  DefinedOrUnknownSVal makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode 
op,
+                                  const SymExpr *rhs, QualType type);
 
-  NonLoc makeNonLoc(const SymExpr *operand, UnaryOperator::Opcode op,
-                    QualType type);
+  DefinedOrUnknownSVal makeNonLoc(const SymExpr *operand,
+                                  UnaryOperator::Opcode op, QualType type);
 
   /// Create a NonLoc value for cast.
-  nonloc::SymbolVal makeNonLoc(const SymExpr *operand, QualType fromTy,
-                               QualType toTy);
+  DefinedOrUnknownSVal makeNonLoc(const SymExpr *operand, QualType fromTy,
+                                  QualType toTy);
----------------
NagyDonat wrote:

I think this function must be renamed, because its current name strongly 
promises that it always returns a `NonLoc`.

https://github.com/llvm/llvm-project/pull/144327
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