diff --git a/compiler/llvm/compiler_llvm.cc b/compiler/llvm/compiler_llvm.cc
new file mode 100644
index 0000000..afca223
--- /dev/null
+++ b/compiler/llvm/compiler_llvm.cc
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "compiler_llvm.h"
+
+#include "backend_options.h"
+#include "base/stl_util.h"
+#include "class_linker.h"
+#include "compiled_method.h"
+#include "driver/compiler_driver.h"
+#include "driver/dex_compilation_unit.h"
+#include "globals.h"
+#include "ir_builder.h"
+#include "jni/portable/jni_compiler.h"
+#include "llvm_compilation_unit.h"
+#include "oat_file.h"
+#include "utils_llvm.h"
+#include "verifier/method_verifier.h"
+
+#include <llvm/LinkAllPasses.h>
+#include <llvm/Support/ManagedStatic.h>
+#include <llvm/Support/TargetSelect.h>
+#include <llvm/Support/Threading.h>
+
+namespace art {
+void CompileOneMethod(CompilerDriver& driver,
+                      const CompilerBackend compilerBackend,
+                      const DexFile::CodeItem* code_item,
+                      uint32_t access_flags, InvokeType invoke_type,
+                      uint32_t class_def_idx, uint32_t method_idx, jobject class_loader,
+                      const DexFile& dex_file,
+                      llvm::LlvmCompilationUnit* llvm_info);
+}
+
+namespace llvm {
+  extern bool TimePassesIsEnabled;
+}
+
+namespace {
+
+pthread_once_t llvm_initialized = PTHREAD_ONCE_INIT;
+
+void InitializeLLVM() {
+  // Initialize LLVM internal data structure for multithreading
+  llvm::llvm_start_multithreaded();
+
+  // NOTE: Uncomment following line to show the time consumption of LLVM passes
+  //llvm::TimePassesIsEnabled = true;
+
+  // Initialize LLVM target-specific options.
+  art::llvm::InitialBackendOptions();
+
+  // Initialize LLVM target, MC subsystem, asm printer, and asm parser.
+  if (art::kIsTargetBuild) {
+    // Don't initialize all targets on device. Just initialize the device's native target
+    llvm::InitializeNativeTarget();
+    llvm::InitializeNativeTargetAsmPrinter();
+    llvm::InitializeNativeTargetAsmParser();
+  } else {
+    llvm::InitializeAllTargets();
+    llvm::InitializeAllTargetMCs();
+    llvm::InitializeAllAsmPrinters();
+    llvm::InitializeAllAsmParsers();
+  }
+
+  // Initialize LLVM optimization passes
+  llvm::PassRegistry &registry = *llvm::PassRegistry::getPassRegistry();
+
+  llvm::initializeCore(registry);
+  llvm::initializeScalarOpts(registry);
+  llvm::initializeIPO(registry);
+  llvm::initializeAnalysis(registry);
+  llvm::initializeIPA(registry);
+  llvm::initializeTransformUtils(registry);
+  llvm::initializeInstCombine(registry);
+  llvm::initializeInstrumentation(registry);
+  llvm::initializeTarget(registry);
+}
+
+// The Guard to Shutdown LLVM
+// llvm::llvm_shutdown_obj llvm_guard;
+// TODO: We are commenting out this line because this will cause SEGV from
+// time to time.
+// Two reasons: (1) the order of the destruction of static objects, or
+//              (2) dlopen/dlclose side-effect on static objects.
+
+} // anonymous namespace
+
+
+namespace art {
+namespace llvm {
+
+
+::llvm::Module* makeLLVMModuleContents(::llvm::Module* module);
+
+
+CompilerLLVM::CompilerLLVM(CompilerDriver* driver, InstructionSet insn_set)
+    : compiler_driver_(driver), insn_set_(insn_set),
+      next_cunit_id_lock_("compilation unit id lock"), next_cunit_id_(1) {
+
+  // Initialize LLVM libraries
+  pthread_once(&llvm_initialized, InitializeLLVM);
+}
+
+
+CompilerLLVM::~CompilerLLVM() {
+}
+
+
+LlvmCompilationUnit* CompilerLLVM::AllocateCompilationUnit() {
+  MutexLock GUARD(Thread::Current(), next_cunit_id_lock_);
+  LlvmCompilationUnit* cunit = new LlvmCompilationUnit(this, next_cunit_id_++);
+  if (!bitcode_filename_.empty()) {
+    cunit->SetBitcodeFileName(StringPrintf("%s-%zu",
+                                           bitcode_filename_.c_str(),
+                                           cunit->GetCompilationUnitId()));
+  }
+  return cunit;
+}
+
+
+CompiledMethod* CompilerLLVM::
+CompileDexMethod(DexCompilationUnit* dex_compilation_unit, InvokeType invoke_type) {
+  UniquePtr<LlvmCompilationUnit> cunit(AllocateCompilationUnit());
+
+  cunit->SetDexCompilationUnit(dex_compilation_unit);
+  cunit->SetCompilerDriver(compiler_driver_);
+  // TODO: consolidate ArtCompileMethods
+  CompileOneMethod(*compiler_driver_,
+                   kPortable,
+                   dex_compilation_unit->GetCodeItem(),
+                   dex_compilation_unit->GetAccessFlags(),
+                   invoke_type,
+                   dex_compilation_unit->GetClassDefIndex(),
+                   dex_compilation_unit->GetDexMethodIndex(),
+                   dex_compilation_unit->GetClassLoader(),
+                   *dex_compilation_unit->GetDexFile(),
+                   cunit.get());
+
+  cunit->Materialize();
+
+  MethodReference mref(dex_compilation_unit->GetDexFile(),
+                       dex_compilation_unit->GetDexMethodIndex());
+  return new CompiledMethod(compiler_driver_->GetInstructionSet(),
+                            cunit->GetElfObject(),
+                            *verifier::MethodVerifier::GetDexGcMap(mref),
+                            cunit->GetDexCompilationUnit()->GetSymbol());
+}
+
+
+CompiledMethod* CompilerLLVM::
+CompileNativeMethod(DexCompilationUnit* dex_compilation_unit) {
+  UniquePtr<LlvmCompilationUnit> cunit(AllocateCompilationUnit());
+
+  UniquePtr<JniCompiler> jni_compiler(
+      new JniCompiler(cunit.get(), *compiler_driver_, dex_compilation_unit));
+
+  return jni_compiler->Compile();
+}
+
+
+} // namespace llvm
+} // namespace art
+
+inline static art::llvm::CompilerLLVM* ContextOf(art::CompilerDriver& driver) {
+  void *compiler_context = driver.GetCompilerContext();
+  CHECK(compiler_context != NULL);
+  return reinterpret_cast<art::llvm::CompilerLLVM*>(compiler_context);
+}
+
+inline static const art::llvm::CompilerLLVM* ContextOf(const art::CompilerDriver& driver) {
+  void *compiler_context = driver.GetCompilerContext();
+  CHECK(compiler_context != NULL);
+  return reinterpret_cast<const art::llvm::CompilerLLVM*>(compiler_context);
+}
+
+extern "C" void ArtInitCompilerContext(art::CompilerDriver& driver) {
+  CHECK(driver.GetCompilerContext() == NULL);
+
+  art::llvm::CompilerLLVM* compiler_llvm = new art::llvm::CompilerLLVM(&driver,
+                                                                       driver.GetInstructionSet());
+
+  driver.SetCompilerContext(compiler_llvm);
+}
+
+extern "C" void ArtUnInitCompilerContext(art::CompilerDriver& driver) {
+  delete ContextOf(driver);
+  driver.SetCompilerContext(NULL);
+}
+extern "C" art::CompiledMethod* ArtCompileMethod(art::CompilerDriver& driver,
+                                                 const art::DexFile::CodeItem* code_item,
+                                                 uint32_t access_flags,
+                                                 art::InvokeType invoke_type,
+                                                 uint32_t class_def_idx,
+                                                 uint32_t method_idx,
+                                                 jobject class_loader,
+                                                 const art::DexFile& dex_file) {
+  UNUSED(class_def_idx);  // TODO: this is used with Compiler::RequiresConstructorBarrier.
+  art::ClassLinker *class_linker = art::Runtime::Current()->GetClassLinker();
+
+  art::DexCompilationUnit dex_compilation_unit(
+    NULL, class_loader, class_linker, dex_file, code_item,
+    class_def_idx, method_idx, access_flags);
+  art::llvm::CompilerLLVM* compiler_llvm = ContextOf(driver);
+  art::CompiledMethod* result = compiler_llvm->CompileDexMethod(&dex_compilation_unit, invoke_type);
+  return result;
+}
+
+extern "C" art::CompiledMethod* ArtLLVMJniCompileMethod(art::CompilerDriver& driver,
+                                                        uint32_t access_flags, uint32_t method_idx,
+                                                        const art::DexFile& dex_file) {
+  art::ClassLinker *class_linker = art::Runtime::Current()->GetClassLinker();
+
+  art::DexCompilationUnit dex_compilation_unit(
+    NULL, NULL, class_linker, dex_file, NULL,
+    0, method_idx, access_flags);
+
+  art::llvm::CompilerLLVM* compiler_llvm = ContextOf(driver);
+  art::CompiledMethod* result = compiler_llvm->CompileNativeMethod(&dex_compilation_unit);
+  return result;
+}
+
+extern "C" void compilerLLVMSetBitcodeFileName(art::CompilerDriver& driver,
+                                               std::string const& filename) {
+  ContextOf(driver)->SetBitcodeFileName(filename);
+}