Minor clean ups. No functionality change.

[oota-llvm.git] / lib / CodeGen / SimpleRegisterCoalescing.h

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.h b/lib/CodeGen/SimpleRegisterCoalescing.h
index 9e55c220034bca93ffcfb9fb53f849f238c29535..d8ff2dc1524fdc09aba26656cf86fca7d61d6541 100644 (file)
--- a/lib/CodeGen/SimpleRegisterCoalescing.h
+++ b/lib/CodeGen/SimpleRegisterCoalescing.h
@@ -224,6 +224,18 @@ namespace llvm {
     /// identity copies so they will be removed.
     void RemoveCopiesFromValNo(LiveInterval &li, VNInfo *VNI);
 
+    /// isWinToJoinVRWithSrcPhysReg - Return true if it's worth while to join a
+    /// a virtual destination register with physical source register.
+    bool isWinToJoinVRWithSrcPhysReg(MachineInstr *CopyMI,
+                                    MachineBasicBlock *CopyMBB,
+                                    LiveInterval &DstInt, LiveInterval &SrcInt);
+
+    /// isWinToJoinVRWithDstPhysReg - Return true if it's worth while to join a
+    /// copy from a virtual source register to a physical destination register.
+    bool isWinToJoinVRWithDstPhysReg(MachineInstr *CopyMI,
+                                    MachineBasicBlock *CopyMBB,
+                                    LiveInterval &DstInt, LiveInterval &SrcInt);
+
     /// isWinToJoinCrossClass - Return true if it's profitable to coalesce
     /// two virtual registers from different register classes.
     bool isWinToJoinCrossClass(unsigned LargeReg, unsigned SmallReg,