Add Dalvik register allocation codegen.

Change-Id: I8842b1b03ff3fa362b69d386cc5927be6d65b460
diff --git a/src/compiler_llvm/dalvik_reg.h b/src/compiler_llvm/dalvik_reg.h
new file mode 100644
index 0000000..e6e5b05
--- /dev/null
+++ b/src/compiler_llvm/dalvik_reg.h
@@ -0,0 +1,77 @@
+/*
+ * 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_DALVIK_REG_H_
+#define ART_SRC_COMPILER_LLVM_DALVIK_REG_H_
+
+#include "backend_types.h"
+
+#include <stdint.h>
+
+namespace llvm {
+  class Type;
+  class Value;
+}
+
+namespace art {
+namespace compiler_llvm {
+
+class IRBuilder;
+class MethodCompiler;
+
+class DalvikReg {
+ public:
+  static DalvikReg* CreateLocalVarReg(MethodCompiler& method_compiler,
+                                      uint32_t reg_idx);
+
+  static DalvikReg* CreateRetValReg(MethodCompiler& method_compiler);
+
+  virtual ~DalvikReg();
+
+  llvm::Value* GetValue(JType jty, JTypeSpace space);
+
+  llvm::Value* GetValue(char shorty, JTypeSpace space) {
+    return GetValue(GetJTypeFromShorty(shorty), space);
+  }
+
+  void SetValue(JType jty, JTypeSpace space, llvm::Value* value);
+
+  void SetValue(char shorty, JTypeSpace space, llvm::Value* value) {
+    return SetValue(GetJTypeFromShorty(shorty), space, value);
+  }
+
+ protected:
+  DalvikReg(MethodCompiler& method_compiler);
+
+ private:
+  llvm::Value* GetAddr(JType jty, JTypeSpace space);
+
+  llvm::Value* RegCat1SExt(llvm::Value* value);
+  llvm::Value* RegCat1ZExt(llvm::Value* value);
+
+  llvm::Value* RegCat1Trunc(llvm::Value* value, llvm::Type* ty);
+
+  virtual llvm::Value* GetRawAddr(JType jty, JTypeSpace space) = 0;
+
+ protected:
+  MethodCompiler* method_compiler_;
+  IRBuilder& irb_;
+};
+
+} // namespace compiler_llvm
+} // namespace art
+
+#endif // ART_SRC_COMPILER_LLVM_DALVIK_REG_H_