| /* |
| * Copyright (C) 2009 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 _DALVIK_VM_COMPILER_OPTIMIZATION_H |
| #define _DALVIK_VM_COMPILER_OPTIMIZATION_H |
| |
| #include "Dalvik.h" |
| |
| /* Forward declarations */ |
| struct CompilationUnit; |
| struct LIR; |
| |
| /* |
| * Data structure tracking the mapping between a Dalvik register (pair) and a |
| * native register (pair). The idea is to reuse the previously loaded value |
| * if possible, otherwise to keep the value in a native register as long as |
| * possible. |
| */ |
| typedef struct RegisterScoreboard { |
| BitVector *nullCheckedRegs; // Track which registers have been null-checked |
| int liveDalvikReg; // Track which Dalvik register is live |
| int nativeReg; // And the mapped native register |
| int nativeRegHi; // And the mapped native register |
| bool isWide; // Whether a pair of registers are alive |
| } RegisterScoreboard; |
| |
| void dvmCompilerApplyLocalOptimizations(struct CompilationUnit *cUnit, |
| struct LIR *head, |
| struct LIR *tail); |
| |
| void dvmCompilerApplyGlobalOptimizations(struct CompilationUnit *cUnit); |
| |
| #endif /* _DALVIK_VM_COMPILER_OPTIMIZATION_H */ |