Enhance EmitInstrWithCustomInserter() so target can specify CFG changes that sdisel will use to properly complete phi nodes.
Not functionality change yet.

llvm-svn: 82273
diff --git a/llvm/lib/Target/Alpha/AlphaISelLowering.h b/llvm/lib/Target/Alpha/AlphaISelLowering.h
index 90e5d1f..b580c9d 100644
--- a/llvm/lib/Target/Alpha/AlphaISelLowering.h
+++ b/llvm/lib/Target/Alpha/AlphaISelLowering.h
@@ -94,7 +94,8 @@
                                         EVT VT) const;
 
     MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
-                                                   MachineBasicBlock *BB) const;
+                                                   MachineBasicBlock *BB,
+                    DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) const;
 
     virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;