code_generator_x86_64.h revision ecb2f9ba57b08ceac4204ddd6a0a88a0524f8741 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
18#define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
19
20#include "code_generator.h"
21#include "nodes.h"
22#include "parallel_move_resolver.h"
23#include "utils/x86_64/assembler_x86_64.h"
24
25namespace art {
26namespace x86_64 {
27
28static constexpr size_t kX86_64WordSize = 8;
29
30static constexpr Register kParameterCoreRegisters[] = { RSI, RDX, RCX, R8, R9 };
31
32static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
33
34class InvokeDexCallingConvention : public CallingConvention<Register> {
35 public:
36  InvokeDexCallingConvention()
37      : CallingConvention(kParameterCoreRegisters, kParameterCoreRegistersLength) {}
38
39 private:
40  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
41};
42
43class InvokeDexCallingConventionVisitor {
44 public:
45  InvokeDexCallingConventionVisitor() : gp_index_(0), stack_index_(0) {}
46
47  Location GetNextLocation(Primitive::Type type);
48
49 private:
50  InvokeDexCallingConvention calling_convention;
51  uint32_t gp_index_;
52  uint32_t stack_index_;
53
54  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitor);
55};
56
57class CodeGeneratorX86_64;
58
59class ParallelMoveResolverX86_64 : public ParallelMoveResolver {
60 public:
61  ParallelMoveResolverX86_64(ArenaAllocator* allocator, CodeGeneratorX86_64* codegen)
62      : ParallelMoveResolver(allocator), codegen_(codegen) {}
63
64  virtual void EmitMove(size_t index) OVERRIDE;
65  virtual void EmitSwap(size_t index) OVERRIDE;
66  virtual void SpillScratch(int reg) OVERRIDE;
67  virtual void RestoreScratch(int reg) OVERRIDE;
68
69  X86_64Assembler* GetAssembler() const;
70
71 private:
72  void Exchange(CpuRegister reg, int mem);
73  void Exchange(int mem1, int mem2);
74
75  CodeGeneratorX86_64* const codegen_;
76
77  DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverX86_64);
78};
79
80class LocationsBuilderX86_64 : public HGraphVisitor {
81 public:
82  LocationsBuilderX86_64(HGraph* graph, CodeGeneratorX86_64* codegen)
83      : HGraphVisitor(graph), codegen_(codegen) {}
84
85#define DECLARE_VISIT_INSTRUCTION(name)     \
86  virtual void Visit##name(H##name* instr);
87
88  FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
89
90#undef DECLARE_VISIT_INSTRUCTION
91
92 private:
93  CodeGeneratorX86_64* const codegen_;
94  InvokeDexCallingConventionVisitor parameter_visitor_;
95
96  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
97};
98
99class InstructionCodeGeneratorX86_64 : public HGraphVisitor {
100 public:
101  InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen);
102
103#define DECLARE_VISIT_INSTRUCTION(name)     \
104  virtual void Visit##name(H##name* instr);
105
106  FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
107
108#undef DECLARE_VISIT_INSTRUCTION
109
110  void LoadCurrentMethod(CpuRegister reg);
111
112  X86_64Assembler* GetAssembler() const { return assembler_; }
113
114 private:
115  X86_64Assembler* const assembler_;
116  CodeGeneratorX86_64* const codegen_;
117
118  DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64);
119};
120
121class CodeGeneratorX86_64 : public CodeGenerator {
122 public:
123  explicit CodeGeneratorX86_64(HGraph* graph);
124  virtual ~CodeGeneratorX86_64() {}
125
126  virtual void ComputeFrameSize(size_t number_of_spill_slots) OVERRIDE;
127  virtual void GenerateFrameEntry() OVERRIDE;
128  virtual void GenerateFrameExit() OVERRIDE;
129  virtual void Bind(Label* label) OVERRIDE;
130  virtual void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;
131
132  virtual size_t GetWordSize() const OVERRIDE {
133    return kX86_64WordSize;
134  }
135
136  virtual HGraphVisitor* GetLocationBuilder() OVERRIDE {
137    return &location_builder_;
138  }
139
140  virtual HGraphVisitor* GetInstructionVisitor() OVERRIDE {
141    return &instruction_visitor_;
142  }
143
144  virtual X86_64Assembler* GetAssembler() OVERRIDE {
145    return &assembler_;
146  }
147
148  ParallelMoveResolverX86_64* GetMoveResolver() {
149    return &move_resolver_;
150  }
151
152  int32_t GetStackSlot(HLocal* local) const;
153  virtual Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
154
155  virtual size_t GetNumberOfRegisters() const OVERRIDE {
156    return kNumberOfRegIds;
157  }
158
159  virtual size_t GetNumberOfCoreRegisters() const OVERRIDE {
160    return kNumberOfCpuRegisters;
161  }
162
163  virtual size_t GetNumberOfFloatingPointRegisters() const OVERRIDE {
164    return kNumberOfFloatRegisters;
165  }
166
167  virtual void SetupBlockedRegisters(bool* blocked_registers) const OVERRIDE;
168  virtual ManagedRegister AllocateFreeRegister(
169      Primitive::Type type, bool* blocked_registers) const OVERRIDE;
170  virtual void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
171  virtual void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;
172
173 private:
174  // Helper method to move a value between two locations.
175  void Move(Location destination, Location source);
176
177  LocationsBuilderX86_64 location_builder_;
178  InstructionCodeGeneratorX86_64 instruction_visitor_;
179  ParallelMoveResolverX86_64 move_resolver_;
180  X86_64Assembler assembler_;
181
182  DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64);
183};
184
185}  // namespace x86_64
186}  // namespace art
187
188#endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
189