2 files changed, 34 insertions, 0 deletions
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index c7d14afcf3..6db4f31a4e 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -24,6 +24,7 @@
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Linker.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
@@ -77,6 +78,7 @@ LTOCodeGenerator::LTOCodeGenerator()
   InitializeAllTargets();
   InitializeAllTargetMCs();
   InitializeAllAsmPrinters();
+  initializeLTOPasses();
 }
 
 LTOCodeGenerator::~LTOCodeGenerator() {
@@ -89,6 +91,36 @@ LTOCodeGenerator::~LTOCodeGenerator() {
     free(*I);
 }
 
+// Initialize LTO passes. Please keep this funciton in sync with
+// PassManagerBuilder::populateLTOPassManager(), and  make sure all LTO
+// passes are initialized. 
+//
+void LTOCodeGenerator::initializeLTOPasses() {
+  PassRegistry &R = *PassRegistry::getPassRegistry();
+
+  initializeInternalizePassPass(R);
+  initializeIPSCCPPass(R);
+  initializeGlobalOptPass(R);
+  initializeConstantMergePass(R);
+  initializeDAHPass(R);
+  initializeInstCombinerPass(R);
+  initializeSimpleInlinerPass(R);
+  initializePruneEHPass(R);
+  initializeGlobalDCEPass(R);
+  initializeArgPromotionPass(R);
+  initializeJumpThreadingPass(R);
+  initializeSROAPass(R);
+  initializeSROA_DTPass(R);
+  initializeSROA_SSAUpPass(R);
+  initializeFunctionAttrsPass(R);
+  initializeGlobalsModRefPass(R);
+  initializeLICMPass(R);
+  initializeGVNPass(R);
+  initializeMemCpyOptPass(R);
+  initializeDCEPass(R);
+  initializeCFGSimplifyPassPass(R);
+}
+
 bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) {
   bool ret = _linker.linkInModule(mod->getLLVVMModule(), &errMsg);
 
diff --git a/tools/lto/LTOCodeGenerator.h b/tools/lto/LTOCodeGenerator.h
index a4ade9fd26..bbe32397fb 100644
--- a/tools/lto/LTOCodeGenerator.h
+++ b/tools/lto/LTOCodeGenerator.h
@@ -56,6 +56,8 @@ struct LTOCodeGenerator {
   void setCodeGenDebugOptions(const char *opts);
 
 private:
+  void initializeLTOPasses();
+
   bool generateObjectFile(llvm::raw_ostream &out, std::string &errMsg);
   void applyScopeRestrictions();
   void applyRestriction(llvm::GlobalValue &GV,