Subzero: Local variable splitting.

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 319 matching lines @@
     InstX86Label(const InstX86Label &) = delete;
     InstX86Label &operator=(const InstX86Label &) = delete;
 
   public:
     static InstX86Label *create(Cfg *Func, TargetLowering *Target) {
       return new (Func->allocate<InstX86Label>()) InstX86Label(Func, Target);
     }
     uint32_t getEmitInstCount() const override { return 0; }
     GlobalString getLabelName() const { return Name; }
     SizeT getLabelNumber() const { return LabelNumber; }
+    bool isLabel() const override { return true; }
     void emit(const Cfg *Func) const override;
     void emitIAS(const Cfg *Func) const override;
     void dump(const Cfg *Func) const override;
     void setRelocOffset(RelocOffset *Value) { OffsetReloc = Value; }
 
   private:
     InstX86Label(Cfg *Func, TargetLowering *Target);
 
     SizeT LabelNumber; // used for unique label generation.
     RelocOffset *OffsetReloc = nullptr;
@@ skipping 55 matching lines @@
         ++Sum;
       if (getTargetTrue())
         ++Sum;
       if (getTargetFalse())
         ++Sum;
       return Sum;
     }
     bool isUnconditionalBranch() const override {
       return !Label && Condition == Cond::Br_None;
     }
+    const Inst *getIntraBlockBranchTarget() const override { return Label; }
     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 *Instr) {
       return InstX86Base::isClassof(Instr, InstX86Base::Br);
     }
 
   private:
     InstX86Br(Cfg *Func, const CfgNode *TargetTrue, const CfgNode *TargetFalse,
@@ skipping 3186 matching lines @@
           &InstImpl<TraitsType>::Assembler::punpckldq};                        \
   }                                                                            \
   }
 
 } // end of namespace X86NAMESPACE
 } // end of namespace Ice
 
 #include "IceInstX86BaseImpl.h"
 
 #endif // SUBZERO_SRC_ICEINSTX86BASE_H