[clang][Interp][NFC] Rename DummyParams to DummyVariables

We create dummy descriptors for variables other than parameters
these days.

Author: tbaederr

clang/lib/AST/Interp/Program.cpp

@@ -145,7 +145,7 @@ std::optional<unsigned> Program::getOrCreateGlobal(const ValueDecl *VD,
 
 std::optional<unsigned> Program::getOrCreateDummy(const ValueDecl *VD) {
   // Dedup blocks since they are immutable and pointers cannot be compared.
-  if (auto It = DummyParams.find(VD); It != DummyParams.end())
+  if (auto It = DummyVariables.find(VD); It != DummyVariables.end())
     return It->second;
 
   // Create dummy descriptor.
@@ -158,7 +158,7 @@ std::optional<unsigned> Program::getOrCreateDummy(const ValueDecl *VD) {
   G->block()->invokeCtor();
 
   Globals.push_back(G);
-  DummyParams[VD] = I;
+  DummyVariables[VD] = I;
   return I;
 }
 

clang/lib/AST/Interp/Program.h

@@ -208,7 +208,7 @@ class Program final {
   llvm::DenseMap<const RecordDecl *, Record *> Records;
 
   /// Dummy parameter to generate pointers from.
-  llvm::DenseMap<const ValueDecl *, unsigned> DummyParams;
+  llvm::DenseMap<const ValueDecl *, unsigned> DummyVariables;
 
   /// Creates a new descriptor.
   template <typename... Ts>