Subzero: Fix x86 floating-point constant emission

src/IceTargetLoweringX8632.h

 //===- subzero/src/IceTargetLoweringX8632.h - x86-32 lowering ---*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the TargetLoweringX8632 class, which
@@ skipping 29 matching lines @@
     return IsEbpBasedFrame ? Reg_ebp : Reg_esp;
   }
   virtual size_t typeWidthInBytesOnStack(Type Ty) {
     // Round up to the next multiple of 4 bytes.  In particular, i1,
     // i8, and i16 are rounded up to 4 bytes.
     return (typeWidthInBytes(Ty) + 3) & ~3;
   }
   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
   // I64 operations, and it is needed for pushing F64 arguments for
   // function calls using the 32-bit push instruction (though the
   // latter could be done by directly writing to the stack).
   void split64(Variable *Var);
   void setArgOffsetAndCopy(Variable *Arg, Variable *FramePtr,
                            int32_t BasicFrameOffset, int32_t &InArgsSizeBytes);
   Operand *loOperand(Operand *Operand);
@@ skipping 194 matching lines @@
   llvm::SmallBitVector RegsUsed;
   SizeT NextLabelNumber;
   bool ComputedLiveRanges;
   VarList PhysicalRegisters;
   static IceString RegNames[];
 
 private:
   TargetX8632(const TargetX8632 &) LLVM_DELETED_FUNCTION;
   TargetX8632 &operator=(const TargetX8632 &) LLVM_DELETED_FUNCTION;
   virtual ~TargetX8632() {}
+  template <typename T> void emitConstantPool() const;
 };
 
+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