Subzero: Emit functions and global initializers in a separate thread.

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 4621 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
-TargetDataX8632::lowerGlobalsELF(const VariableDeclarationList &Vars) const {
-  ELFObjectWriter *Writer = Ctx->getObjectWriter();
-  Writer->writeDataSection(Vars, llvm::ELF::R_386_32);
+void TargetDataX8632::lowerGlobals(
+    std::unique_ptr<VariableDeclarationList> Vars) const {
+  if (Ctx->getFlags().getUseELFWriter()) {
+    ELFObjectWriter *Writer = Ctx->getObjectWriter();
+    Writer->writeDataSection(*Vars, llvm::ELF::R_386_32);
+  } else {
+    const IceString &TranslateOnly = Ctx->getFlags().getTranslateOnly();
+    OstreamLocker L(Ctx);
+    for (const VariableDeclaration *Var : *Vars) {
+      if (GlobalContext::matchSymbolName(Var->getName(), TranslateOnly)) {
+        lowerGlobal(*Var);
+      }
+    }
+  }
 }
 
 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;
@@ skipping 38 matching lines @@
         snprintf(buf, llvm::array_lengthof(buf), T::PrintfString, RawValue);
     assert(CharsPrinted >= 0 &&
            (size_t)CharsPrinted < llvm::array_lengthof(buf));
     (void)CharsPrinted; // avoid warnings if asserts are disabled
     Const->emitPoolLabel(Str);
     Str << ":\n\t" << T::AsmTag << "\t" << buf << "\t# " << T::TypeName << " "
         << Value << "\n";
   }
 }
 
-void TargetDataX8632::lowerConstants(GlobalContext *Ctx) const {
+void TargetDataX8632::lowerConstants() const {
   if (Ctx->getFlags().getDisableTranslation())
     return;
   // No need to emit constants from the int pool since (for x86) they
   // are embedded as immediates in the instructions, just emit float/double.
   if (Ctx->getFlags().getUseELFWriter()) {
     ELFObjectWriter *Writer = Ctx->getObjectWriter();
     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