Allow memory intrinsics to be tail calls

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

diff --git a/include/llvm/CodeGen/LiveVariables.h b/include/llvm/CodeGen/LiveVariables.h
index 71062a2a51965594c147955fa742e37d95b99c15..55b97dc3e71d94306be66c173fb50e4f56a36c3a 100644 (file)
--- a/include/llvm/CodeGen/LiveVariables.h
+++ b/include/llvm/CodeGen/LiveVariables.h
@@ -29,21 +29,19 @@
 #ifndef LLVM_CODEGEN_LIVEVARIABLES_H
 #define LLVM_CODEGEN_LIVEVARIABLES_H
 
-#include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/SparseBitVector.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 
 namespace llvm {
 
+class MachineBasicBlock;
 class MachineRegisterInfo;
-class TargetRegisterInfo;
 
 class LiveVariables : public MachineFunctionPass {
 public:
@@ -126,12 +124,6 @@ private:
   /// building live intervals.
   SparseBitVector<> PHIJoins;
 
-  /// ReservedRegisters - This vector keeps track of which registers
-  /// are reserved register which are not allocatable by the target machine.
-  /// We can not track liveness for values that are in this set.
-  ///
-  BitVector ReservedRegisters;
-
 private:   // Intermediate data structures
   MachineFunction *MF;
 
@@ -142,14 +134,14 @@ private:   // Intermediate data structures
   // PhysRegInfo - Keep track of which instruction was the last def of a
   // physical register. This is a purely local property, because all physical
   // register references are presumed dead across basic blocks.
-  MachineInstr **PhysRegDef;
+  std::vector<MachineInstr *> PhysRegDef;
 
   // PhysRegInfo - Keep track of which instruction was the last use of a
   // physical register. This is a purely local property, because all physical
   // register references are presumed dead across basic blocks.
-  MachineInstr **PhysRegUse;
+  std::vector<MachineInstr *> PhysRegUse;
 
-  SmallVector<unsigned, 4> *PHIVarInfo;
+  std::vector<SmallVector<unsigned, 4>> PHIVarInfo;
 
   // DistanceMap - Keep track the distance of a MI from the start of the
   // current basic block.
@@ -160,10 +152,13 @@ private:   // Intermediate data structures
   /// the last use of the whole register.
   bool HandlePhysRegKill(unsigned Reg, MachineInstr *MI);
 
+  /// HandleRegMask - Call HandlePhysRegKill for all registers clobbered by Mask.
+  void HandleRegMask(const MachineOperand&);
+
   void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
   void HandlePhysRegDef(unsigned Reg, MachineInstr *MI,
-                        SmallVector<unsigned, 4> &Defs);
-  void UpdatePhysRegDefs(MachineInstr *MI, SmallVector<unsigned, 4> &Defs);
+                        SmallVectorImpl<unsigned> &Defs);
+  void UpdatePhysRegDefs(MachineInstr *MI, SmallVectorImpl<unsigned> &Defs);
 
   /// FindLastRefOrPartRef - Return the last reference or partial reference of
   /// the specified register.
@@ -180,9 +175,13 @@ private:   // Intermediate data structures
   /// register which is used in a PHI node. We map that to the BB the vreg
   /// is coming from.
   void analyzePHINodes(const MachineFunction& Fn);
+
+  void runOnInstr(MachineInstr *MI, SmallVectorImpl<unsigned> &Defs);
+
+  void runOnBlock(MachineBasicBlock *MBB, unsigned NumRegs);
 public:
 
-  virtual bool runOnMachineFunction(MachineFunction &MF);
+  bool runOnMachineFunction(MachineFunction &MF) override;
 
   /// RegisterDefIsDead - Return true if the specified instruction defines the
   /// specified register, but that definition is dead.
@@ -263,10 +262,10 @@ public:
     (void)Removed;
     return true;
   }
-  
-  void getAnalysisUsage(AnalysisUsage &AU) const;
 
-  virtual void releaseMemory() {
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+  void releaseMemory() override {
     VirtRegInfo.clear();
   }