ugh, missed a file.

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

diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h
index dede05f85c0f27d20586726e4df78d8660d8e7d0..066c91b36cf53fca720fad76ef857d24d6c5da08 100644 (file)
--- a/include/llvm/CodeGen/MachineRegisterInfo.h
+++ b/include/llvm/CodeGen/MachineRegisterInfo.h
@@ -35,7 +35,7 @@ class MachineRegisterInfo {
   /// RegClassVRegMap - This vector acts as a map from TargetRegisterClass to
   /// virtual registers. For each target register class, it keeps a list of
   /// virtual registers belonging to the class.
-  std::vector<std::vector<unsigned> > RegClass2VRegMap;
+  std::vector<unsigned> *RegClass2VRegMap;
 
   /// RegAllocHints - This vector records register allocation hints for virtual
   /// registers. For each virtual register, it keeps a register and hint type
@@ -293,6 +293,10 @@ public:
   /// corresponding live-in physical register.
   unsigned getLiveInPhysReg(unsigned VReg) const;
 
+  /// getLiveInVirtReg - If PReg is a live-in physical register, return the
+  /// corresponding live-in physical register.
+  unsigned getLiveInVirtReg(unsigned PReg) const;
+
   /// EmitLiveInCopies - Emit copies to initialize livein virtual registers
   /// into the given entry block.
   void EmitLiveInCopies(MachineBasicBlock *EntryMBB,
@@ -359,7 +363,18 @@ public:
     defusechain_iterator operator++(int) {        // Postincrement
       defusechain_iterator tmp = *this; ++*this; return tmp;
     }
-    
+
+    /// skipInstruction - move forward until reaching a different instruction.
+    /// Return the skipped instruction that is no longer pointed to, or NULL if
+    /// already pointing to end().
+    MachineInstr *skipInstruction() {
+      if (!Op) return 0;
+      MachineInstr *MI = Op->getParent();
+      do ++*this;
+      while (Op && Op->getParent() == MI);
+      return MI;
+    }
+
     MachineOperand &getOperand() const {
       assert(Op && "Cannot dereference end iterator!");
       return *Op;