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

src/IceTranslator.cpp

 //===- subzero/src/IceTranslator.cpp - ICE to machine code ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines the general driver class for translating ICE to
 // machine code.
 //
 //===----------------------------------------------------------------------===//
 
 #include "IceCfg.h"
 #include "IceClFlags.h"
 #include "IceDefs.h"
 #include "IceGlobalInits.h"
 #include "IceTargetLowering.h"
 #include "IceTranslator.h"
 
 using namespace Ice;
 
 Translator::Translator(GlobalContext *Ctx, const ClFlags &Flags)
     : Ctx(Ctx), Flags(Flags),
-      GlobalLowering(TargetGlobalLowering::createLowering(Ctx)), ErrorStatus() {
-}
+      DataLowering(TargetDataLowering::createLowering(Ctx)), ErrorStatus() {}
 
 Translator::~Translator() {}
 
 IceString Translator::createUnnamedName(const IceString &Prefix, SizeT Index) {
   if (Index == 0)
     return Prefix;
   std::string Buffer;
   llvm::raw_string_ostream StrBuf(Buffer);
   StrBuf << Prefix << Index;
   return StrBuf.str();
@@ skipping 18 matching lines @@
 
 void Translator::translateFcn(Cfg *Func) {
   Ctx->cfgQueueBlockingPush(Func);
   if (Ctx->getFlags().NumTranslationThreads == 0) {
     Ctx->translateFunctions();
   }
 }
 
 void Translator::emitConstants() {
   if (!getErrorStatus())
-    GlobalLowering->lowerConstants(Ctx);
+    DataLowering->lowerConstants(Ctx);
 }
 
 void Translator::transferErrorCode() const {
   if (getErrorStatus())
     Ctx->getErrorStatus()->assign(getErrorStatus().value());
 }
 
-void Translator::lowerGlobals(
-    const VariableDeclarationListType &VariableDeclarations) {
+void
+Translator::lowerGlobals(const VariableDeclarationList &VariableDeclarations) {
+  TimerMarker T(TimerStack::TT_emitGlobalInitializers, Ctx);
   bool DisableTranslation = Ctx->getFlags().DisableTranslation;
   const bool DumpGlobalVariables =
       ALLOW_DUMP && Ctx->getVerbose() && Ctx->getFlags().VerboseFocusOn.empty();
-  OstreamLocker L(Ctx);
-  Ostream &Stream = Ctx->getStrDump();
-  const IceString &TranslateOnly = Ctx->getFlags().TranslateOnly;
-  for (const Ice::VariableDeclaration *Global : VariableDeclarations) {
-    if (DumpGlobalVariables)
-      Global->dump(getContext(), Stream);
-    if (!DisableTranslation &&
-        GlobalContext::matchSymbolName(Global->getName(), TranslateOnly))
-      GlobalLowering->lowerInit(*Global);
+  if (Ctx->getFlags().UseELFWriter) {
+    // Dump all globals if requested, but don't interleave w/ emission.
+    if (DumpGlobalVariables) {
+      OstreamLocker L(Ctx);
+      Ostream &Stream = Ctx->getStrDump();
+      for (const Ice::VariableDeclaration *Global : VariableDeclarations) {
+        Global->dump(getContext(), Stream);
+      }
+    }
+    DataLowering->lowerGlobalsELF(VariableDeclarations);
+  } else {
+    const IceString &TranslateOnly = Ctx->getFlags().TranslateOnly;
+    OstreamLocker L(Ctx);
+    Ostream &Stream = Ctx->getStrDump();
+    for (const Ice::VariableDeclaration *Global : VariableDeclarations) {
+      // Interleave dump output w/ emit output.
+      if (DumpGlobalVariables)
+        Global->dump(getContext(), Stream);
+      if (!DisableTranslation &&
+          GlobalContext::matchSymbolName(Global->getName(), TranslateOnly))
+        DataLowering->lowerGlobal(*Global);
+    }
   }
 }