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

src/IceConverter.cpp

 //===- subzero/src/IceConverter.cpp - Converts LLVM to Ice  ---------------===//
 //
 //                        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 LLVM to ICE converter.
@@ skipping 66 matching lines @@
 class LLVM2ICEFunctionConverter : LLVM2ICEConverter {
   LLVM2ICEFunctionConverter(const LLVM2ICEFunctionConverter &) = delete;
   LLVM2ICEFunctionConverter &
   operator=(const LLVM2ICEFunctionConverter &) = delete;
 
 public:
   LLVM2ICEFunctionConverter(Ice::Converter &Converter)
       : LLVM2ICEConverter(Converter), Func(nullptr) {}
 
   void convertFunction(const Function *F) {
-    Func = Ice::Cfg::create(Ctx);
+    if (Ctx->isIRGenerationDisabled())
+      return;
+    Func = Ice::Cfg::create(Ctx, Converter.getNextSequenceNumber());
     Ice::Cfg::setCurrentCfg(Func.get());
 
     VarMap.clear();
     NodeMap.clear();
     Func->setFunctionName(F->getName());
     Func->setReturnType(convertToIceType(F->getReturnType()));
     Func->setInternal(F->hasInternalLinkage());
     Ice::TimerMarker T(Ice::TimerStack::TT_llvmConvert, Func.get());
 
     // The initial definition/use of each arg is the entry node.
@@ skipping 696 matching lines @@
   raw_string_ostream StrBuf(Buffer);
   StrBuf << "Unhandled global initializer: " << Initializer;
   report_fatal_error(StrBuf.str());
 }
 
 } // end of anonymous namespace
 
 namespace Ice {
 
 void Converter::nameUnnamedGlobalVariables(Module *Mod) {
-  const IceString &GlobalPrefix = Flags.DefaultGlobalPrefix;
+  const IceString &GlobalPrefix = Ctx->getFlags().DefaultGlobalPrefix;
   if (GlobalPrefix.empty())
     return;
   uint32_t NameIndex = 0;
   for (auto V = Mod->global_begin(), E = Mod->global_end(); V != E; ++V) {
     if (!V->hasName()) {
       V->setName(createUnnamedName(GlobalPrefix, NameIndex));
       ++NameIndex;
     } else {
       checkIfUnnamedNameSafe(V->getName(), "global", GlobalPrefix);
     }
   }
 }
 
 void Converter::nameUnnamedFunctions(Module *Mod) {
-  const IceString &FunctionPrefix = Flags.DefaultFunctionPrefix;
+  const IceString &FunctionPrefix = Ctx->getFlags().DefaultFunctionPrefix;
   if (FunctionPrefix.empty())
     return;
   uint32_t NameIndex = 0;
   for (Function &F : *Mod) {
     if (!F.hasName()) {
       F.setName(createUnnamedName(FunctionPrefix, NameIndex));
       ++NameIndex;
     } else {
       checkIfUnnamedNameSafe(F.getName(), "function", FunctionPrefix);
     }
@@ skipping 46 matching lines @@
     Var->setName(GV->getName());
     Var->setAlignment(GV->getAlignment());
     Var->setIsConstant(GV->isConstant());
     Var->setLinkage(GV->getLinkage());
     GlobalDeclarationMap[GV] = Var;
   }
 }
 
 void Converter::convertGlobals(Module *Mod) {
   LLVM2ICEGlobalsConverter GlobalsConverter(*this);
-  VariableDeclarationList VariableDeclarations;
-  GlobalsConverter.convertGlobalsToIce(Mod, VariableDeclarations);
+  VariableDeclarationList *VariableDeclarations = new VariableDeclarationList;
+  GlobalsConverter.convertGlobalsToIce(Mod, *VariableDeclarations);
   lowerGlobals(VariableDeclarations);
 }
 
 void Converter::convertFunctions() {
   const TimerStackIdT StackID = GlobalContext::TSK_Funcs;
   for (const Function &I : *Mod) {
     if (I.empty())
       continue;
 
     TimerIdT TimerID = 0;
     const bool TimeThisFunction =
         ALLOW_DUMP && Ctx->getFlags().TimeEachFunction;
     if (TimeThisFunction) {
       TimerID = Ctx->getTimerID(StackID, I.getName());
       Ctx->pushTimer(TimerID, StackID);
     }
     LLVM2ICEFunctionConverter FunctionConverter(*this);
     FunctionConverter.convertFunction(&I);
     if (TimeThisFunction)
       Ctx->popTimer(TimerID, StackID);
   }
 }
 
 } // end of namespace Ice