Refactor Subzero initialization and add a browser callback handler.

src/IceInstX8632.h

 //===- subzero/src/IceInstX8632.h - Low-level x86 instructions --*- 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 InstX8632 and OperandX8632 classes and
@@ skipping 272 matching lines @@
   // report_fatal_error() if one is found.  This function should be
   // called during emission, and maybe also in the ctor (as long as
   // that fits the lowering style).
   void validateVectorAddrMode() const {
     if (getDest())
       validateVectorAddrModeOpnd(getDest());
     for (SizeT i = 0; i < getSrcSize(); ++i) {
       validateVectorAddrModeOpnd(getSrc(i));
     }
   }
+
 private:
   static void validateVectorAddrModeOpnd(const Operand *Opnd) {
     if (llvm::isa<OperandX8632Mem>(Opnd) && isVectorType(Opnd->getType())) {
       llvm::report_fatal_error("Possible misaligned vector memory operation");
     }
   }
 };
 
 // InstX8632Label represents an intra-block label that is the target
 // of an intra-block branch.  The offset between the label and the
@@ skipping 1375 matching lines @@
 template <> void InstX8632Pinsr::emitIAS(const Cfg *Func) const;
 template <> void InstX8632Movsx::emitIAS(const Cfg *Func) const;
 template <> void InstX8632Movzx::emitIAS(const Cfg *Func) const;
 template <> void InstX8632Pmull::emitIAS(const Cfg *Func) const;
 template <> void InstX8632Pshufd::emitIAS(const Cfg *Func) const;
 template <> void InstX8632Shufps::emitIAS(const Cfg *Func) const;
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEINSTX8632_H