X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAggressiveAntiDepBreaker.h;h=6683630fba6dda5b1769315e6798affbb4e4cdf5;hb=3e2346341cc7407bb895ddb13e43d512713e8a35;hp=8154d2dd57256117b67dea434f4070da57319d6d;hpb=557bbe6b5d13faaec38f85a266db457c7cb09ff2;p=oota-llvm.git

diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.h b/lib/CodeGen/AggressiveAntiDepBreaker.h
index 8154d2dd572..6683630fba6 100644
--- a/lib/CodeGen/AggressiveAntiDepBreaker.h
+++ b/lib/CodeGen/AggressiveAntiDepBreaker.h
@@ -18,19 +18,21 @@
 #define LLVM_CODEGEN_AGGRESSIVEANTIDEPBREAKER_H
 
 #include "AntiDepBreaker.h"
+#include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/SmallSet.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/ScheduleDAG.h"
-#include "llvm/Target/TargetSubtarget.h"
 #include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/SmallSet.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
 #include <map>
 
 namespace llvm {
-  /// Class AggressiveAntiDepState 
+class RegisterClassInfo;
+
+  /// Class AggressiveAntiDepState
   /// Contains all the state necessary for anti-dep breaking.
   class AggressiveAntiDepState {
   public:
@@ -44,38 +46,42 @@ namespace llvm {
     } RegisterReference;
 
   private:
+    /// NumTargetRegs - Number of non-virtual target registers
+    /// (i.e. TRI->getNumRegs()).
+    const unsigned NumTargetRegs;
+
     /// GroupNodes - Implements a disjoint-union data structure to
     /// form register groups. A node is represented by an index into
     /// the vector. A node can "point to" itself to indicate that it
     /// is the parent of a group, or point to another node to indicate
     /// that it is a member of the same group as that node.
     std::vector<unsigned> GroupNodes;
-  
+
     /// GroupNodeIndices - For each register, the index of the GroupNode
     /// currently representing the group that the register belongs to.
     /// Register 0 is always represented by the 0 group, a group
     /// composed of registers that are not eligible for anti-aliasing.
-    unsigned GroupNodeIndices[TargetRegisterInfo::FirstVirtualRegister];
-  
+    std::vector<unsigned> GroupNodeIndices;
+
     /// RegRefs - Map registers to all their references within a live range.
     std::multimap<unsigned, RegisterReference> RegRefs;
-  
+
     /// KillIndices - The index of the most recent kill (proceding bottom-up),
     /// or ~0u if the register is not live.
-    unsigned KillIndices[TargetRegisterInfo::FirstVirtualRegister];
-  
+    std::vector<unsigned> KillIndices;
+
     /// DefIndices - The index of the most recent complete def (proceding bottom
     /// up), or ~0u if the register is live.
-    unsigned DefIndices[TargetRegisterInfo::FirstVirtualRegister];
+    std::vector<unsigned> DefIndices;
 
   public:
-    AggressiveAntiDepState(MachineBasicBlock *BB);
-    
+    AggressiveAntiDepState(const unsigned TargetRegs, MachineBasicBlock *BB);
+
     /// GetKillIndices - Return the kill indices.
-    unsigned *GetKillIndices() { return KillIndices; }
+    std::vector<unsigned> &GetKillIndices() { return KillIndices; }
 
     /// GetDefIndices - Return the define indices.
-    unsigned *GetDefIndices() { return DefIndices; }
+    std::vector<unsigned> &GetDefIndices() { return DefIndices; }
 
     /// GetRegRefs - Return the RegRefs map.
     std::multimap<unsigned, RegisterReference>& GetRegRefs() { return RegRefs; }
@@ -83,13 +89,14 @@ namespace llvm {
     // GetGroup - Get the group for a register. The returned value is
     // the index of the GroupNode representing the group.
     unsigned GetGroup(unsigned Reg);
-    
+
     // GetGroupRegs - Return a vector of the registers belonging to a
     // group. If RegRefs is non-NULL then only included referenced registers.
     void GetGroupRegs(
        unsigned Group,
        std::vector<unsigned> &Regs,
-       std::multimap<unsigned, AggressiveAntiDepState::RegisterReference> *RegRefs);
+       std::multimap<unsigned,
+         AggressiveAntiDepState::RegisterReference> *RegRefs);
 
     // UnionGroups - Union Reg1's and Reg2's groups to form a new
     // group. Return the index of the GroupNode representing the
@@ -106,16 +113,13 @@ namespace llvm {
   };
 
 
-  /// Class AggressiveAntiDepBreaker 
+  /// Class AggressiveAntiDepBreaker
   class AggressiveAntiDepBreaker : public AntiDepBreaker {
     MachineFunction& MF;
     MachineRegisterInfo &MRI;
+    const TargetInstrInfo *TII;
     const TargetRegisterInfo *TRI;
-
-    /// AllocatableSet - The set of allocatable registers.
-    /// We'll be ignoring anti-dependencies on non-allocatable registers,
-    /// because they may not be safe to break.
-    const BitVector AllocatableSet;
+    const RegisterClassInfo &RegClassInfo;
 
     /// CriticalPathSet - The set of registers that should only be
     /// renamed if they are on the critical path.
@@ -126,20 +130,23 @@ namespace llvm {
     AggressiveAntiDepState *State;
 
   public:
-    AggressiveAntiDepBreaker(MachineFunction& MFi, 
-                             TargetSubtarget::RegClassVector& CriticalPathRCs);
+    AggressiveAntiDepBreaker(MachineFunction& MFi,
+                          const RegisterClassInfo &RCI,
+                          TargetSubtargetInfo::RegClassVector& CriticalPathRCs);
     ~AggressiveAntiDepBreaker();
-    
+
     /// Start - Initialize anti-dep breaking for a new basic block.
     void StartBlock(MachineBasicBlock *BB);
 
-    /// BreakAntiDependencies - Identifiy anti-dependencies along the critical path
+    /// BreakAntiDependencies - Identifiy anti-dependencies along the critical
+    /// path
     /// of the ScheduleDAG and break them by renaming registers.
     ///
-    unsigned BreakAntiDependencies(std::vector<SUnit>& SUnits,
-                                   MachineBasicBlock::iterator& Begin,
-                                   MachineBasicBlock::iterator& End,
-                                   unsigned InsertPosIndex);
+    unsigned BreakAntiDependencies(const std::vector<SUnit>& SUnits,
+                                   MachineBasicBlock::iterator Begin,
+                                   MachineBasicBlock::iterator End,
+                                   unsigned InsertPosIndex,
+                                   DbgValueVector &DbgValues);
 
     /// Observe - Update liveness information to account for the current
     /// instruction, which will not be scheduled.
@@ -150,13 +157,13 @@ namespace llvm {
     void FinishBlock();
 
   private:
-    typedef std::map<const TargetRegisterClass *,
-                     TargetRegisterClass::const_iterator> RenameOrderType;
+    /// Keep track of a position in the allocation order for each regclass.
+    typedef std::map<const TargetRegisterClass *, unsigned> RenameOrderType;
 
     /// IsImplicitDefUse - Return true if MO represents a register
     /// that is both implicitly used and defined in MI
     bool IsImplicitDefUse(MachineInstr *MI, MachineOperand& MO);
-    
+
     /// GetPassthruRegs - If MI implicitly def/uses a register, then
     /// return that register and all subregisters.
     void GetPassthruRegs(MachineInstr *MI, std::set<unsigned>& PassthruRegs);