Subzero. Buildable, non-functional TargetLoweringX8664.

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 2770 matching lines @@
   using Cvt = InstX86Cvt<Machine>;
   using Icmp = InstX86Icmp<Machine>;
   using Ucomiss = InstX86Ucomiss<Machine>;
   using UD2 = InstX86UD2<Machine>;
   using Test = InstX86Test<Machine>;
   using Mfence = InstX86Mfence<Machine>;
   using Store = InstX86Store<Machine>;
   using StoreP = InstX86StoreP<Machine>;
   using StoreQ = InstX86StoreQ<Machine>;
   using Nop = InstX86Nop<Machine>;
-  using Fld = InstX86Fld<Machine>;
-  using Fstp = InstX86Fstp<Machine>;
+  template <typename T = typename InstX86Base<Machine>::Traits>
+  using Fld = typename std::enable_if<T::UsesX87, InstX86Fld<Machine>>::type;
+  template <typename T = typename InstX86Base<Machine>::Traits>
+  using Fstp = typename std::enable_if<T::UsesX87, InstX86Fstp<Machine>>::type;
   using Pop = InstX86Pop<Machine>;
   using Push = InstX86Push<Machine>;
   using Ret = InstX86Ret<Machine>;
   using Setcc = InstX86Setcc<Machine>;
   using Xadd = InstX86Xadd<Machine>;
   using Xchg = InstX86Xchg<Machine>;
 };
 
 /// X86 Instructions have static data (particularly, opcodes and instruction
 /// emitters). Each X86 target needs to define all of these, so this macro is
@@ skipping 344 matching lines @@
           &InstX86Base<Machine>::Traits::Assembler::psrl};                     \
   }                                                                            \
   }
 
 } // end of namespace X86Internal
 } // end of namespace Ice
 
 #include "IceInstX86BaseImpl.h"
 
 #endif // SUBZERO_SRC_ICEINSTX86BASE_H