add alias support to bitcode

[oota-llvm.git] / include / llvm / Value.h

diff --git a/include/llvm/Value.h b/include/llvm/Value.h
index ddfcbb69796ff83947941228f0fba2d65c4938dd..44c4453b04a045577ec5181f8f692023c406f4d0 100644 (file)
--- a/include/llvm/Value.h
+++ b/include/llvm/Value.h
@@ -30,6 +30,7 @@ class BasicBlock;
 class GlobalValue;
 class Function;
 class GlobalVariable;
+class GlobalAlias;
 class InlineAsm;
 class ValueSymbolTable;
 class TypeSymbolTable;
@@ -160,6 +161,7 @@ public:
     ArgumentVal,              // This is an instance of Argument
     BasicBlockVal,            // This is an instance of BasicBlock
     FunctionVal,              // This is an instance of Function
+    GlobalAliasVal,           // This is an instance of GlobalAlias
     GlobalVariableVal,        // This is an instance of GlobalVariable
     UndefValueVal,            // This is an instance of UndefValue
     ConstantExprVal,          // This is an instance of ConstantExpr
@@ -178,14 +180,16 @@ public:
     ConstantLastVal  = ConstantPointerNullVal
   };
 
-  /// getValueType - Return an ID for the concrete type of this object.  This is
+  /// getValueID - Return an ID for the concrete type of this object.  This is
   /// used to implement the classof checks.  This should not be used for any
   /// other purpose, as the values may change as LLVM evolves.  Also, note that
-  /// starting with the InstructionVal value, the value stored is actually the
-  /// Instruction opcode, so there are more than just these values possible here
-  /// (and Instruction must be last).
-  ///
-  unsigned getValueType() const {
+  /// for instructions, the Instruction's opcode is added to InstructionVal. So
+  /// this means three things:
+  /// # there is no value with code InstructionVal (no opcode==0).
+  /// # there are more possible values for the value type than in ValueTy enum.
+  /// # the InstructionVal enumerator must be the highest valued enumerator in
+  ///   the ValueTy enum.
+  unsigned getValueID() const {
     return SubclassID;
   }
 
@@ -225,29 +229,32 @@ void Use::set(Value *V) {
 // the subtype header files to test to see if the value is a subclass...
 //
 template <> inline bool isa_impl<Constant, Value>(const Value &Val) {
-  return Val.getValueType() >= Value::ConstantFirstVal &&
-         Val.getValueType() <= Value::ConstantLastVal;
+  return Val.getValueID() >= Value::ConstantFirstVal &&
+         Val.getValueID() <= Value::ConstantLastVal;
 }
 template <> inline bool isa_impl<Argument, Value>(const Value &Val) {
-  return Val.getValueType() == Value::ArgumentVal;
+  return Val.getValueID() == Value::ArgumentVal;
 }
 template <> inline bool isa_impl<InlineAsm, Value>(const Value &Val) {
-  return Val.getValueType() == Value::InlineAsmVal;
+  return Val.getValueID() == Value::InlineAsmVal;
 }
 template <> inline bool isa_impl<Instruction, Value>(const Value &Val) {
-  return Val.getValueType() >= Value::InstructionVal;
+  return Val.getValueID() >= Value::InstructionVal;
 }
 template <> inline bool isa_impl<BasicBlock, Value>(const Value &Val) {
-  return Val.getValueType() == Value::BasicBlockVal;
+  return Val.getValueID() == Value::BasicBlockVal;
 }
 template <> inline bool isa_impl<Function, Value>(const Value &Val) {
-  return Val.getValueType() == Value::FunctionVal;
+  return Val.getValueID() == Value::FunctionVal;
 }
 template <> inline bool isa_impl<GlobalVariable, Value>(const Value &Val) {
-  return Val.getValueType() == Value::GlobalVariableVal;
+  return Val.getValueID() == Value::GlobalVariableVal;
+}
+template <> inline bool isa_impl<GlobalAlias, Value>(const Value &Val) {
+  return Val.getValueID() == Value::GlobalAliasVal;
 }
 template <> inline bool isa_impl<GlobalValue, Value>(const Value &Val) {
-  return isa<GlobalVariable>(Val) || isa<Function>(Val);
+  return isa<GlobalVariable>(Val) || isa<Function>(Val) || isa<GlobalAlias>(Val);
 }
 
 } // End llvm namespace