Introduction of improved switch lowering.

src/IceInstX86Base.h

 //===- subzero/src/IceInstX86Base.h - Generic x86 instructions -*- C++ -*--===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 331 matching lines @@
       ++Sum;
     if (getTargetTrue())
       ++Sum;
     if (getTargetFalse())
       ++Sum;
     return Sum;
   }
   bool isUnconditionalBranch() const override {
     return !Label && Condition == InstX86Base<Machine>::Traits::Cond::Br_None;
   }
-  bool repointEdge(CfgNode *OldNode, CfgNode *NewNode) override;
+  bool repointEdges(CfgNode *OldNode, CfgNode *NewNode) override;
   void emit(const Cfg *Func) const override;
   void emitIAS(const Cfg *Func) const override;
   void dump(const Cfg *Func) const override;
   static bool classof(const Inst *Inst) {
     return InstX86Base<Machine>::isClassof(Inst, InstX86Base<Machine>::Br);
   }
 
 private:
   InstX86Br(Cfg *Func, const CfgNode *TargetTrue, const CfgNode *TargetFalse,
             const InstX86Label<Machine> *Label,
@@ skipping 2776 matching lines @@
           &InstX86Base<Machine>::Traits::Assembler::psrl};                     \
   }                                                                            \
   }
 
 } // end of namespace X86Internal
 } // end of namespace Ice
 
 #include "IceInstX86BaseImpl.h"
 
 #endif // SUBZERO_SRC_ICEINSTX86BASE_H