X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAntiDepBreaker.h;h=df47f984d57817bdd75e1b21eff31b9eb1c07325;hb=3bfc4d8e13edd83534b733f0f1de5b1d5f6bf828;hp=277508767e1c9b7a4a64d780cca3e4efebe4acd1;hpb=4de099d8ca651e00fa5fac22bace4f4dba2d0292;p=oota-llvm.git

diff --git a/lib/CodeGen/AntiDepBreaker.h b/lib/CodeGen/AntiDepBreaker.h
index 277508767e1..df47f984d57 100644
--- a/lib/CodeGen/AntiDepBreaker.h
+++ b/lib/CodeGen/AntiDepBreaker.h
@@ -21,8 +21,7 @@
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/ScheduleDAG.h"
 #include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/ADT/SmallSet.h"
-#include "llvm/ADT/SmallVector.h"
+#include <vector>
 
 namespace llvm {
 
@@ -31,20 +30,11 @@ namespace llvm {
 /// anti-dependencies.
 class AntiDepBreaker {
 public:
-  typedef SmallSet<unsigned, 4> AntiDepRegSet;
-  typedef SmallVector<unsigned, 4> AntiDepRegVector;
-  typedef std::map<SUnit *, AntiDepRegVector> CandidateMap;
+  typedef std::vector<std::pair<MachineInstr *, MachineInstr *> > 
+    DbgValueVector;
 
   virtual ~AntiDepBreaker();
 
-  /// GetMaxTrials - Return the maximum number of anti-dependence
-  /// breaking attempts that will be made for a block.
-  virtual unsigned GetMaxTrials() =0;
-
-  /// NeedCandidates - Return true if the schedule must provide
-  /// candidates with BreakAntiDependencies().
-  virtual bool NeedCandidates() =0;
-
   /// Start - Initialize anti-dep breaking for a new basic block.
   virtual void StartBlock(MachineBasicBlock *BB) =0;
 
@@ -52,11 +42,11 @@ public:
   /// basic-block region and break them by renaming registers. Return
   /// the number of anti-dependencies broken.
   ///
-  virtual unsigned BreakAntiDependencies(std::vector<SUnit>& SUnits,
-                                CandidateMap& Candidates,
-                                MachineBasicBlock::iterator& Begin,
-                                MachineBasicBlock::iterator& End,
-                                unsigned InsertPosIndex) =0;
+  virtual unsigned BreakAntiDependencies(const std::vector<SUnit>& SUnits,
+                                         MachineBasicBlock::iterator Begin,
+                                         MachineBasicBlock::iterator End,
+                                         unsigned InsertPosIndex,
+                                         DbgValueVector &DbgValues) = 0;
   
   /// Observe - Update liveness information to account for the current
   /// instruction, which will not be scheduled.
@@ -66,6 +56,14 @@ public:
   
   /// Finish - Finish anti-dep breaking for a basic block.
   virtual void FinishBlock() =0;
+
+  /// UpdateDbgValue - Update DBG_VALUE if dependency breaker is updating
+  /// other machine instruction to use NewReg.
+  void UpdateDbgValue(MachineInstr *MI, unsigned OldReg, unsigned NewReg) {
+    assert (MI->isDebugValue() && "MI is not DBG_VALUE!");
+    if (MI && MI->getOperand(0).isReg() && MI->getOperand(0).getReg() == OldReg)
+      MI->getOperand(0).setReg(NewReg);
+  }
 };
 
 }