Initial Subzero WASM prototype.

src/IceInst.h

Index: src/IceInst.h
diff --git a/src/IceInst.h b/src/IceInst.h
index 6c62d0bcaff73ee9cd55b24d05d869dbd2252bec..de2027944001b2d1f5c7153f8115bcebfd77a017 100644
--- a/src/IceInst.h
+++ b/src/IceInst.h
@@ -167,6 +167,9 @@ public:
 
   virtual ~Inst() = default;
 
+  void setCfgNode(CfgNode *node) { BasicBlock = node; }
+  CfgNode *getCfgNode() const { return BasicBlock; }
+
 protected:
   Inst(Cfg *Func, InstKind Kind, SizeT MaxSrcs, Variable *Dest);
   void addSource(Operand *Src) {
@@ -183,6 +186,9 @@ protected:
   /// was allocated via the Cfg's allocator.
   virtual void destroy(Cfg *Func) { Func->deallocateArrayOf<Operand *>(Srcs); }
 
+  /// The CfgNode that contains this instruction
+  CfgNode *BasicBlock = nullptr;
+
   const InstKind Kind;
   /// Number is the instruction number for describing live ranges.
   InstNumberT Number;
@@ -623,6 +629,7 @@ public:
   void addArgument(Operand *Source, CfgNode *Label);
   Operand *getOperandForTarget(CfgNode *Target) const;
   CfgNode *getLabel(SizeT Index) const { return Labels[Index]; }
+  void setLabel(SizeT Index, CfgNode *Label) { Labels[Index] = Label; }
   void livenessPhiOperand(LivenessBV &Live, CfgNode *Target,
                           Liveness *Liveness);
   Inst *lower(Cfg *Func);