Use a Factory Method for MachineFunctionInfo Creation

[oota-llvm.git] / include / llvm / CodeGen / MachineFunction.h

diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 0a2c5733007e8c891fcda782aeed554b159008d4..4e9ff9ebb4fead3136df917bc799b1f8eeb6325d 100644 (file)
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -39,6 +39,7 @@ class MachineModuleInfo;
 class MCContext;
 class Pass;
 class TargetMachine;
+class TargetSubtargetInfo;
 class TargetRegisterClass;
 struct MachinePointerInfo;
 
@@ -71,15 +72,24 @@ private:
 /// MachineFunction is destroyed.
 struct MachineFunctionInfo {
   virtual ~MachineFunctionInfo();
+
+  /// \brief Factory function: default behavior is to call new using the
+  /// supplied allocator.
+  ///
+  /// This function can be overridden in a derive class.
+  template<typename Ty>
+  static Ty *create(BumpPtrAllocator &Allocator, MachineFunction &MF) {
+    return new (Allocator.Allocate<Ty>()) Ty(MF);
+  }
 };
 
 class MachineFunction {
   const Function *Fn;
   const TargetMachine &Target;
+  const TargetSubtargetInfo *STI;
   MCContext &Ctx;
   MachineModuleInfo &MMI;
-  GCModuleInfo *GMI;
-  
+
   // RegInfo - Information about each register in use in the function.
   MachineRegisterInfo *RegInfo;
 
@@ -139,12 +149,10 @@ class MachineFunction {
   void operator=(const MachineFunction&) LLVM_DELETED_FUNCTION;
 public:
   MachineFunction(const Function *Fn, const TargetMachine &TM,
-                  unsigned FunctionNum, MachineModuleInfo &MMI,
-                  GCModuleInfo* GMI);
+                  unsigned FunctionNum, MachineModuleInfo &MMI);
   ~MachineFunction();
 
   MachineModuleInfo &getMMI() const { return MMI; }
-  GCModuleInfo *getGMI() const { return GMI; }
   MCContext &getContext() const { return Ctx; }
 
   /// getFunction - Return the LLVM function that this machine code represents
@@ -163,6 +171,11 @@ public:
   ///
   const TargetMachine &getTarget() const { return Target; }
 
+  /// getSubtarget - Return the subtarget for which this machine code is being
+  /// compiled.
+  const TargetSubtargetInfo &getSubtarget() const { return *STI; }
+  void setSubtarget(const TargetSubtargetInfo *ST) { STI = ST; }
+
   /// getRegInfo - Return information about the registers currently in use.
   ///
   MachineRegisterInfo &getRegInfo() { return *RegInfo; }
@@ -235,7 +248,7 @@ public:
   template<typename Ty>
   Ty *getInfo() {
     if (!MFInfo)
-      MFInfo = new (Allocator.Allocate<Ty>()) Ty(*this);
+      MFInfo = Ty::template create<Ty>(Allocator, *this);
     return static_cast<Ty*>(MFInfo);
   }