Move compiler_llvm to art::llvm.

Also move the invoke stubs (soon to be removed) under compiler.
Start moving LLVM code under compiler. Will move GBC expander to dex/portable
once it is disentangled from other builds (moving toward solving Bug: 8195425).

Change-Id: I8829f9db6ade9ac8e32bd16198b90f83619769f1
diff --git a/src/compiler/llvm/llvm_compilation_unit.h b/src/compiler/llvm/llvm_compilation_unit.h
new file mode 100644
index 0000000..9ca9e3f
--- /dev/null
+++ b/src/compiler/llvm/llvm_compilation_unit.h
@@ -0,0 +1,134 @@
+/*
+ * 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.
+ */
+
+#ifndef ART_SRC_COMPILER_LLVM_LLVM_COMPILATION_UNIT_H_
+#define ART_SRC_COMPILER_LLVM_LLVM_COMPILATION_UNIT_H_
+
+#include "base/logging.h"
+#include "base/mutex.h"
+#include "compiler/dex/compiler_internals.h"
+#include "compiler/driver/compiler_driver.h"
+#include "globals.h"
+#include "instruction_set.h"
+#include "compiler/driver/dex_compilation_unit.h"
+#include "runtime_support_builder.h"
+#include "runtime_support_func.h"
+#include "safe_map.h"
+
+#include <UniquePtr.h>
+#include <string>
+#include <vector>
+
+namespace art {
+  class CompiledMethod;
+}
+
+namespace llvm {
+  class Function;
+  class LLVMContext;
+  class Module;
+  class raw_ostream;
+}
+
+namespace art {
+namespace llvm {
+
+class CompilerLLVM;
+class IRBuilder;
+
+class LlvmCompilationUnit {
+ public:
+  ~LlvmCompilationUnit();
+
+  size_t GetIndex() const {
+    return cunit_idx_;
+  }
+
+  InstructionSet GetInstructionSet() const;
+
+  ::llvm::LLVMContext* GetLLVMContext() const {
+    return context_.get();
+  }
+
+  ::llvm::Module* GetModule() const {
+    return module_;
+  }
+
+  IRBuilder* GetIRBuilder() const {
+    return irb_.get();
+  }
+
+  void SetBitcodeFileName(const std::string& bitcode_filename) {
+    bitcode_filename_ = bitcode_filename;
+  }
+
+  LLVMInfo* GetQuickContext() const {
+    return llvm_info_.get();
+  }
+  void SetCompiler(CompilerDriver* driver) {
+    driver_ = driver;
+  }
+  void SetDexCompilationUnit(DexCompilationUnit* dex_compilation_unit) {
+    dex_compilation_unit_ = dex_compilation_unit;
+  }
+
+  bool Materialize();
+
+  bool IsMaterialized() const {
+    return !compiled_code_.empty();
+  }
+
+  const std::vector<uint8_t>& GetCompiledCode() const {
+    DCHECK(IsMaterialized());
+    return compiled_code_;
+  }
+
+ private:
+  LlvmCompilationUnit(const CompilerLLVM* compiler_llvm,
+                      size_t cunit_idx);
+
+  const CompilerLLVM* compiler_llvm_;
+  const size_t cunit_idx_;
+
+  UniquePtr< ::llvm::LLVMContext> context_;
+  UniquePtr<IRBuilder> irb_;
+  UniquePtr<RuntimeSupportBuilder> runtime_support_;
+  ::llvm::Module* module_; // Managed by context_
+  UniquePtr<IntrinsicHelper> intrinsic_helper_;
+  UniquePtr<LLVMInfo> llvm_info_;
+  CompilerDriver* driver_;
+  DexCompilationUnit* dex_compilation_unit_;
+
+  std::string bitcode_filename_;
+
+  std::vector<uint8_t> compiled_code_;
+
+  SafeMap<const ::llvm::Function*, CompiledMethod*> compiled_methods_map_;
+
+  void CheckCodeAlign(uint32_t offset) const;
+
+  bool MaterializeToString(std::string& str_buffer);
+  bool MaterializeToRawOStream(::llvm::raw_ostream& out_stream);
+
+  bool ExtractCodeAndPrelink(const std::string& elf_image);
+
+  friend class CompilerLLVM;  // For LlvmCompilationUnit constructor
+};
+
+} // namespace llvm
+} // namespace art
+
+#endif // ART_SRC_COMPILER_LLVM_LLVM_COMPILATION_UNIT_H_