Make VarInit Name an Init

Make the VarInit name an Init itself.  We need this to implement paste
functionality so we can reference variables whose names are not yet
completely resolved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142497 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 22 insertions, 4 deletions

diff --git a/include/llvm/TableGen/Record.h b/include/llvm/TableGen/Record.h
index 4502aa72a7..47d4f7f2ce 100644
--- a/include/llvm/TableGen/Record.h
+++ b/include/llvm/TableGen/Record.h
@@ -1058,9 +1058,11 @@ public:
 /// VarInit - 'Opcode' - Represent a reference to an entire variable object.
 ///
 class VarInit : public TypedInit {
-  std::string VarName;
+  Init *VarName;
 
   explicit VarInit(const std::string &VN, RecTy *T)
+      : TypedInit(T), VarName(StringInit::get(VN)) {}
+  explicit VarInit(Init *VN, RecTy *T)
       : TypedInit(T), VarName(VN) {}
 
   VarInit(const VarInit &Other);  // Do not define.
@@ -1074,7 +1076,11 @@ public:
     return Ty->convertValue(const_cast<VarInit *>(this));
   }
 
-  const std::string &getName() const { return VarName; }
+  const std::string &getName() const;
+  Init *getNameInit() const { return VarName; }
+  std::string getNameInitAsString() const {
+    return getNameInit()->getAsUnquotedString();
+  }
 
   virtual Init *resolveBitReference(Record &R, const RecordVal *RV,
                                     unsigned Bit) const;
@@ -1092,7 +1098,7 @@ public:
   ///
   virtual Init *resolveReferences(Record &R, const RecordVal *RV) const;
 
-  virtual std::string getAsString() const { return VarName; }
+  virtual std::string getAsString() const { return getName(); }
 };
 
 
diff --git a/lib/TableGen/Record.cpp b/lib/TableGen/Record.cpp
index 06a41c9eb2..64975e4656 100644
--- a/lib/TableGen/Record.cpp
+++ b/lib/TableGen/Record.cpp
@@ -1298,7 +1298,12 @@ TypedInit::convertInitListSlice(const std::vector<unsigned> &Elements) const {
 
 
 VarInit *VarInit::get(const std::string &VN, RecTy *T) {
-  typedef std::pair<RecTy *, TableGenStringKey> Key;
+  Init *Value = StringInit::get(VN);
+  return VarInit::get(Value, T);
+}
+
+VarInit *VarInit::get(Init *VN, RecTy *T) {
+  typedef std::pair<RecTy *, Init *> Key;
   typedef DenseMap<Key, VarInit *> Pool;
   static Pool ThePool;
 
@@ -1309,6 +1314,13 @@ VarInit *VarInit::get(const std::string &VN, RecTy *T) {
   return I;
 }
 
+const std::string &VarInit::getName() const {
+  StringInit *NameString =
+    dynamic_cast<StringInit *>(getNameInit());
+  assert(NameString && "VarInit name is not a string!");
+  return NameString->getValue();
+}
+
 Init *VarInit::resolveBitReference(Record &R, const RecordVal *IRV,
                                    unsigned Bit) const {
   if (R.isTemplateArg(getName())) return 0;