Exemplo n.º 1
0
    virtual void HandleTranslationUnit(ASTContext &C) {
      {
        PrettyStackTraceString CrashInfo("Per-file LLVM IR generation");
        if (llvm::TimePassesIsEnabled)
          LLVMIRGeneration.startTimer();

        Gen->HandleTranslationUnit(C);

        if (llvm::TimePassesIsEnabled)
          LLVMIRGeneration.stopTimer();
      }

      // Silently ignore if we weren't initialized for some reason.
      if (!TheModule)
        return;

      // Make sure IR generation is happy with the module. This is released by
      // the module provider.
      llvm::Module *M = Gen->ReleaseModule();
      if (!M) {
        // The module has been released by IR gen on failures, do not double
        // free.
        TheModule.take();
        return;
      }

      assert(TheModule.get() == M &&
             "Unexpected module change during IR generation");

      // Link LinkModule into this module if present, preserving its validity.
      if (LinkModule) {
        std::string ErrorMsg;
        if (Linker::LinkModules(M, LinkModule.get(), Linker::PreserveSource,
                                &ErrorMsg)) {
          Diags.Report(diag::err_fe_cannot_link_module)
            << LinkModule->getModuleIdentifier() << ErrorMsg;
          return;
        }
      }

      // Install an inline asm handler so that diagnostics get printed through
      // our diagnostics hooks.
      LLVMContext &Ctx = TheModule->getContext();
      LLVMContext::InlineAsmDiagHandlerTy OldHandler =
        Ctx.getInlineAsmDiagnosticHandler();
      void *OldContext = Ctx.getInlineAsmDiagnosticContext();
      Ctx.setInlineAsmDiagnosticHandler(InlineAsmDiagHandler, this);

      EmitBackendOutput(Diags, CodeGenOpts, TargetOpts, LangOpts,
                        TheModule.get(), Action, AsmOutStream);
      
      Ctx.setInlineAsmDiagnosticHandler(OldHandler, OldContext);
    }