Subzero: Improve debugging controls, plus minor refactoring.

src/IceTargetLoweringX8632.cpp

 //===- subzero/src/IceTargetLoweringX8632.cpp - x86-32 lowering -----------===//
 //
 //                        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 TargetLoweringX8632 class, which
@@ skipping 4433 matching lines @@
 
 void TargetGlobalInitX8632::lower(const VariableDeclaration &Var) {
 
   Ostream &Str = Ctx->getStrEmit();
 
   const VariableDeclaration::InitializerListType &Initializers =
       Var.getInitializers();
 
   // If external and not initialized, this must be a cross test.
   // Don't generate a declaration for such cases.
-  bool IsExternal = Var.isExternal();
+  bool IsExternal = Var.isExternal() || Ctx->getFlags().DisableInternal;
   if (IsExternal && !Var.hasInitializer()) return;
 
   bool HasNonzeroInitializer = Var.hasNonzeroInitializer();
   bool IsConstant = Var.getIsConstant();
   uint32_t Align = Var.getAlignment();
   SizeT Size = Var.getNumBytes();
   IceString MangledName = Var.mangleName(Ctx);
   IceString SectionSuffix = "";
   if (Ctx->getFlags().DataSections)
     SectionSuffix = "." + MangledName;
@@ skipping 64 matching lines @@
   } else if (IsConstant || IsExternal)
     Str << "\t.zero\t" << Size << "\n";
   // Size is part of .comm.
 
   if (IsConstant || HasNonzeroInitializer || IsExternal)
     Str << "\t.size\t" << MangledName << ", " << Size << "\n";
   // Size is part of .comm.
 }
 
 } // end of namespace Ice