Start adding an integrated assembler.

src/IceTargetLowering.cpp

 //===- subzero/src/IceTargetLowering.cpp - Basic lowering implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the skeleton of the TargetLowering class,
 // specifically invoking the appropriate lowering method for a given
 // instruction kind and driving global register allocation.  It also
 // implements the non-deleted instruction iteration in
 // LoweringContext.
 //
 //===----------------------------------------------------------------------===//
 
+#include "assembler_ia32.h"
 #include "IceCfg.h" // setError()
 #include "IceCfgNode.h"
 #include "IceOperand.h"
 #include "IceRegAlloc.h"
 #include "IceTargetLowering.h"
 #include "IceTargetLoweringX8632.h"
 
 #include "llvm/Support/CommandLine.h"
 
 namespace Ice {
@@ skipping 63 matching lines @@
     return IceTargetX8664::create(Func);
   if (Target == Target_ARM32)
     return IceTargetARM32::create(Func);
   if (Target == Target_ARM64)
     return IceTargetARM64::create(Func);
 #endif
   Func->setError("Unsupported target");
   return NULL;
 }
 
+Assembler *TargetLowering::createAssembler(TargetArch Target, Cfg *Func) {
+  // These statements can be #ifdef'd to specialize the assembler
+  // to a subset of the available targets.  TODO: use CRTP.
+  if (Target == Target_X8632)
+    return new x86::AssemblerX86();
+  Func->setError("Unsupported target");
+  return NULL;
+}
+
 void TargetLowering::doAddressOpt() {
   if (llvm::isa<InstLoad>(*Context.getCur()))
     doAddressOptLoad();
   else if (llvm::isa<InstStore>(*Context.getCur()))
     doAddressOptStore();
   Context.advanceCur();
   Context.advanceNext();
 }
 
 bool TargetLowering::shouldDoNopInsertion() const { return DoNopInsertion; }
@@ skipping 131 matching lines @@
   if (Target == Target_ARM64)
     return IceTargetGlobalInitARM64::create(Ctx);
 #endif
   llvm_unreachable("Unsupported target");
   return NULL;
 }
 
 TargetGlobalInitLowering::~TargetGlobalInitLowering() {}
 
 } // end of namespace Ice