DebugInfo: Drop rest of DIDescriptor subclasses

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

diff --git a/include/llvm/CodeGen/DFAPacketizer.h b/include/llvm/CodeGen/DFAPacketizer.h
index a88e6dd428dc083be9301d68d550b0af7e35a544..f9cdc2a469ff39e97628b47fa628c5f5235efbfc 100644 (file)
--- a/include/llvm/CodeGen/DFAPacketizer.h
+++ b/include/llvm/CodeGen/DFAPacketizer.h
@@ -26,8 +26,9 @@
 #ifndef LLVM_CODEGEN_DFAPACKETIZER_H
 #define LLVM_CODEGEN_DFAPACKETIZER_H
 
-#include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include <map>
 
 namespace llvm {
 
@@ -36,7 +37,7 @@ class MachineInstr;
 class MachineLoopInfo;
 class MachineDominatorTree;
 class InstrItineraryData;
-class ScheduleDAGInstrs;
+class DefaultVLIWScheduler;
 class SUnit;
 
 class DFAPacketizer {
@@ -77,6 +78,8 @@ public:
   // reserveResources - Reserve the resources occupied by a machine
   // instruction and change the current state to reflect that change.
   void reserveResources(llvm::MachineInstr *MI);
+
+  const InstrItineraryData *getInstrItins() const { return InstrItins; }
 };
 
 // VLIWPacketizerList - Implements a simple VLIW packetizer using DFA. The
@@ -87,25 +90,23 @@ public:
 // and machine resource is marked as taken. If any dependency is found, a target
 // API call is made to prune the dependence.
 class VLIWPacketizerList {
-  const TargetMachine &TM;
+protected:
   const MachineFunction &MF;
   const TargetInstrInfo *TII;
 
   // The VLIW Scheduler.
-  ScheduleDAGInstrs *VLIWScheduler;
+  DefaultVLIWScheduler *VLIWScheduler;
 
-protected:
   // Vector of instructions assigned to the current packet.
   std::vector<MachineInstr*> CurrentPacketMIs;
   // DFA resource tracker.
   DFAPacketizer *ResourceTracker;
-  // Scheduling units.
-  std::vector<SUnit> SUnits;
+
+  // Generate MI -> SU map.
+  std::map<MachineInstr*, SUnit*> MIToSUnit;
 
 public:
-  VLIWPacketizerList(
-    MachineFunction &MF, MachineLoopInfo &MLI, MachineDominatorTree &MDT,
-    bool IsPostRA);
+  VLIWPacketizerList(MachineFunction &MF, MachineLoopInfo &MLI, bool IsPostRA);
 
   virtual ~VLIWPacketizerList();
 
@@ -118,17 +119,32 @@ public:
   DFAPacketizer *getResourceTracker() {return ResourceTracker;}
 
   // addToPacket - Add MI to the current packet.
-  void addToPacket(MachineInstr *MI);
+  virtual MachineBasicBlock::iterator addToPacket(MachineInstr *MI) {
+    MachineBasicBlock::iterator MII = MI;
+    CurrentPacketMIs.push_back(MI);
+    ResourceTracker->reserveResources(MI);
+    return MII;
+  }
 
   // endPacket - End the current packet.
-  void endPacket(MachineBasicBlock *MBB, MachineInstr *I);
+  void endPacket(MachineBasicBlock *MBB, MachineInstr *MI);
+
+  // initPacketizerState - perform initialization before packetizing
+  // an instruction. This function is supposed to be overrided by
+  // the target dependent packetizer.
+  virtual void initPacketizerState() { return; }
 
   // ignorePseudoInstruction - Ignore bundling of pseudo instructions.
-  bool ignorePseudoInstruction(MachineInstr *I, MachineBasicBlock *MBB);
+  virtual bool ignorePseudoInstruction(MachineInstr *I,
+                                       MachineBasicBlock *MBB) {
+    return false;
+  }
 
-  // isSoloInstruction - return true if instruction I must end previous
-  // packet.
-  bool isSoloInstruction(MachineInstr *I);
+  // isSoloInstruction - return true if instruction MI can not be packetized
+  // with any other instruction, which means that MI itself is a packet.
+  virtual bool isSoloInstruction(MachineInstr *MI) {
+    return true;
+  }
 
   // isLegalToPacketizeTogether - Is it legal to packetize SUI and SUJ
   // together.
@@ -141,6 +157,7 @@ public:
   virtual bool isLegalToPruneDependencies(SUnit *SUI, SUnit *SUJ) {
     return false;
   }
+
 };
 }