Issue description:

[oota-llvm.git] / lib / CodeGen / SelectionDAG / InstrEmitter.h

diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.h b/lib/CodeGen/SelectionDAG/InstrEmitter.h
index 6b70d6afac4e42dcffe701e4768e155bfea94054..9eddee9e33d3417cbc33afe3cdd18a9a65beba4a 100644 (file)
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.h
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.h
@@ -22,7 +22,7 @@
 
 namespace llvm {
 
-class TargetInstrDesc;
+class MCInstrDesc;
 class SDDbgValue;
 
 class InstrEmitter {
@@ -49,7 +49,7 @@ class InstrEmitter {
                                     unsigned ResNo) const;
 
   void CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
-                              const TargetInstrDesc &II,
+                              const MCInstrDesc &II,
                               bool IsClone, bool IsCloned,
                               DenseMap<SDValue, unsigned> &VRBaseMap);
 
@@ -63,9 +63,9 @@ class InstrEmitter {
   /// not in the required register class.
   void AddRegisterOperand(MachineInstr *MI, SDValue Op,
                           unsigned IIOpNum,
-                          const TargetInstrDesc *II,
+                          const MCInstrDesc *II,
                           DenseMap<SDValue, unsigned> &VRBaseMap,
-                          bool IsDebug = false);
+                          bool IsDebug, bool IsClone, bool IsCloned);
 
   /// AddOperand - Add the specified operand to the specified machine instr.  II
   /// specifies the instruction information for the node, and IIOpNum is the
@@ -73,13 +73,20 @@ class InstrEmitter {
   /// assertions only.
   void AddOperand(MachineInstr *MI, SDValue Op,
                   unsigned IIOpNum,
-                  const TargetInstrDesc *II,
+                  const MCInstrDesc *II,
                   DenseMap<SDValue, unsigned> &VRBaseMap,
-                  bool IsDebug = false);
+                  bool IsDebug, bool IsClone, bool IsCloned);
+
+  /// ConstrainForSubReg - Try to constrain VReg to a register class that
+  /// supports SubIdx sub-registers.  Emit a copy if that isn't possible.
+  /// Return the virtual register to use.
+  unsigned ConstrainForSubReg(unsigned VReg, unsigned SubIdx,
+                              EVT VT, DebugLoc DL);
 
   /// EmitSubregNode - Generate machine code for subreg nodes.
   ///
-  void EmitSubregNode(SDNode *Node, DenseMap<SDValue, unsigned> &VRBaseMap);
+  void EmitSubregNode(SDNode *Node, DenseMap<SDValue, unsigned> &VRBaseMap,
+                      bool IsClone, bool IsCloned);
 
   /// EmitCopyToRegClassNode - Generate machine code for COPY_TO_REGCLASS nodes.
   /// COPY_TO_REGCLASS is just a normal copy, except that the destination
@@ -88,30 +95,30 @@ class InstrEmitter {
   void EmitCopyToRegClassNode(SDNode *Node,
                               DenseMap<SDValue, unsigned> &VRBaseMap);
 
+  /// EmitRegSequence - Generate machine code for REG_SEQUENCE nodes.
+  ///
+  void EmitRegSequence(SDNode *Node, DenseMap<SDValue, unsigned> &VRBaseMap,
+                       bool IsClone, bool IsCloned);
 public:
   /// CountResults - The results of target nodes have register or immediate
   /// operands first, then an optional chain, and optional flag operands
   /// (which do not go into the machine instrs.)
   static unsigned CountResults(SDNode *Node);
 
-  /// CountOperands - The inputs to target nodes have any actual inputs first,
-  /// followed by an optional chain operand, then flag operands.  Compute
-  /// the number of actual operands that will go into the resulting
-  /// MachineInstr.
-  static unsigned CountOperands(SDNode *Node);
-
   /// EmitDbgValue - Generate machine instruction for a dbg_value node.
   ///
   MachineInstr *EmitDbgValue(SDDbgValue *SD,
-                          MachineBasicBlock *InsertBB,
-                          DenseMap<SDValue, unsigned> &VRBaseMap,
-                          DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM);
+                             DenseMap<SDValue, unsigned> &VRBaseMap);
 
   /// EmitNode - Generate machine code for a node and needed dependencies.
   ///
   void EmitNode(SDNode *Node, bool IsClone, bool IsCloned,
-                DenseMap<SDValue, unsigned> &VRBaseMap,
-                DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM);
+                DenseMap<SDValue, unsigned> &VRBaseMap) {
+    if (Node->isMachineOpcode())
+      EmitMachineNode(Node, IsClone, IsCloned, VRBaseMap);
+    else
+      EmitSpecialNode(Node, IsClone, IsCloned, VRBaseMap);
+  }
 
   /// getBlock - Return the current basic block.
   MachineBasicBlock *getBlock() { return MBB; }
@@ -122,6 +129,12 @@ public:
   /// InstrEmitter - Construct an InstrEmitter and set it to start inserting
   /// at the given position in the given block.
   InstrEmitter(MachineBasicBlock *mbb, MachineBasicBlock::iterator insertpos);
+  
+private:
+  void EmitMachineNode(SDNode *Node, bool IsClone, bool IsCloned,
+                       DenseMap<SDValue, unsigned> &VRBaseMap);
+  void EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
+                       DenseMap<SDValue, unsigned> &VRBaseMap);
 };
 
 }