diff options
| -rw-r--r-- | llvm/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/llvm/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h b/llvm/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h index 540700ff06e..87555c9ad01 100644 --- a/llvm/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h +++ b/llvm/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h @@ -253,14 +253,8 @@ private: Module &SrcM = LMResources.SourceModule->getResource(); - // Create the GlobalValues module. + // Create stub functions. const DataLayout &DL = SrcM.getDataLayout(); - auto GVsM = llvm::make_unique<Module>((SrcM.getName() + ".globals").str(), - SrcM.getContext()); - GVsM->setDataLayout(DL); - - // Create function stubs. - ValueToValueMapTy VMap; { typename IndirectStubsMgrT::StubInitsMap StubInits; for (auto &F : SrcM) { @@ -292,6 +286,19 @@ private: assert(!EC && "Error generating stubs"); } + // If this module doesn't contain any globals or aliases we can bail out + // early and avoid the overhead of creating and managing an empty globals + // module. + if (SrcM.global_empty() && SrcM.alias_empty()) + return; + + // Create the GlobalValues module. + auto GVsM = llvm::make_unique<Module>((SrcM.getName() + ".globals").str(), + SrcM.getContext()); + GVsM->setDataLayout(DL); + + ValueToValueMapTy VMap; + // Clone global variable decls. for (auto &GV : SrcM.globals()) if (!GV.isDeclaration() && !VMap.count(&GV)) |
