Subzero: Fix x86 floating-point constant emission

src/IceTargetLoweringX8632.h

Index: src/IceTargetLoweringX8632.h
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h
index 38184de66007d0badb4485707d0dac55dcb845c0..e03f39b764836b5f6b2a1ada5b36c7909afcbb28 100644
--- a/src/IceTargetLoweringX8632.h
+++ b/src/IceTargetLoweringX8632.h
@@ -47,6 +47,7 @@ public:
   virtual void emitVariable(const Variable *Var, const Cfg *Func) const;
   virtual void addProlog(CfgNode *Node);
   virtual void addEpilog(CfgNode *Node);
+  virtual void emitConstants() const;
   SizeT makeNextLabelNumber() { return NextLabelNumber++; }
   // Ensure that a 64-bit Variable has been split into 2 32-bit
   // Variables, creating them if necessary.  This is needed for all
@@ -263,6 +264,9 @@ private:
   virtual ~TargetX8632() {}
 };
 
+template <> void ConstantFloat::emit(const Cfg *Func) const;
+template <> void ConstantDouble::emit(const Cfg *Func) const;
+
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632_H