Subzero. Moves code around in preparations for 64-bit lowering.

src/IceTargetLoweringX8632.h

Index: src/IceTargetLoweringX8632.h
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h
index d086135a2867d16da1c0f3b03f9adf7ef25a3f3e..61878090ca70ea3ce2866f8c5bf823e9df03205e 100644
--- a/src/IceTargetLoweringX8632.h
+++ b/src/IceTargetLoweringX8632.h
@@ -43,6 +43,10 @@ public:
 
 protected:
   void lowerCall(const InstCall *Instr) override;
+  void lowerArguments() override;
+  void lowerRet(const InstRet *Inst) override;
+  void addProlog(CfgNode *Node) override;
+  void addEpilog(CfgNode *Node) override;
 
 private:
   friend class ::Ice::X86Internal::TargetX86Base<TargetX8632>;