Write out global initializers and data rel directly to ELF file.

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 4546 matching lines @@
 }
 
 void ConstantUndef::emit(GlobalContext *) const {
   llvm_unreachable("undef value encountered by emitter.");
 }
 
 TargetGlobalX8632::TargetGlobalX8632(GlobalContext *Ctx)
     : TargetGlobalLowering(Ctx) {}
 
 void TargetGlobalX8632::lowerInit(const VariableDeclaration &Var) const {
-  // TODO(jvoung): handle this without text.
-  if (Ctx->getFlags().UseELFWriter)
-    return;
-
-  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() || Ctx->getFlags().DisableInternal;
   if (IsExternal && !Var.hasInitializer())
     return;
 
+  Ostream &Str = Ctx->getStrEmit();
+  const VariableDeclaration::InitializerListType &Initializers =
+      Var.getInitializers();
   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;
 
   Str << "\t.type\t" << MangledName << ",@object\n";
@@ skipping 46 matching lines @@
   } else
     // NOTE: for non-constant zero initializers, this is BSS (no bits),
     // so an ELF writer would not write to the file, and only track
     // virtual offsets, but the .s writer still needs this .zero and
     // cannot simply use the .size to advance offsets.
     Str << "\t.zero\t" << Size << "\n";
 
   Str << "\t.size\t" << MangledName << ", " << Size << "\n";
 }
 
+void
+TargetGlobalX8632::lowerInitELF(const VariableDeclarationList &Vars) const {
+  ELFObjectWriter *Writer = Ctx->getObjectWriter();
+  Writer->writeDataSection(Vars, llvm::ELF::R_386_32);
+}
+
 template <typename T> struct PoolTypeConverter {};
 
 template <> struct PoolTypeConverter<float> {
   typedef uint32_t PrimitiveIntType;
   typedef ConstantFloat IceType;
   static const Type Ty = IceType_f32;
   static const char *TypeName;
   static const char *AsmTag;
   static const char *PrintfString;
 };
@@ skipping 53 matching lines @@
     Writer->writeConstantPool<ConstantFloat>(IceType_f32);
     Writer->writeConstantPool<ConstantDouble>(IceType_f64);
   } else {
     OstreamLocker L(Ctx);
     emitConstantPool<PoolTypeConverter<float>>(Ctx);
     emitConstantPool<PoolTypeConverter<double>>(Ctx);
   }
 }
 
 } // end of namespace Ice