code_generator_x86_64.h revision bacfec30ee9f2f6fdfd190f11b105b609938efca 
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 };
31static constexpr FloatRegister kParameterFloatRegisters[] =
32    { XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7 };
33
34static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
35static constexpr size_t kParameterFloatRegistersLength = arraysize(kParameterFloatRegisters);
36
37class InvokeDexCallingConvention : public CallingConvention<Register, FloatRegister> {
38 public:
39  InvokeDexCallingConvention() : CallingConvention(
40      kParameterCoreRegisters,
41      kParameterCoreRegistersLength,
42      kParameterFloatRegisters,
43      kParameterFloatRegistersLength) {}
44
45 private:
46  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
47};
48
49class InvokeDexCallingConventionVisitor {
50 public:
51  InvokeDexCallingConventionVisitor() : gp_index_(0), fp_index_(0), stack_index_(0) {}
52
53  Location GetNextLocation(Primitive::Type type);
54
55 private:
56  InvokeDexCallingConvention calling_convention;
57  // The current index for cpu registers.
58  uint32_t gp_index_;
59  // The current index for fpu registers.
60  uint32_t fp_index_;
61  // The current stack index.
62  uint32_t stack_index_;
63
64  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitor);
65};
66
67class CodeGeneratorX86_64;
68class SlowPathCodeX86_64;
69
70class ParallelMoveResolverX86_64 : public ParallelMoveResolver {
71 public:
72  ParallelMoveResolverX86_64(ArenaAllocator* allocator, CodeGeneratorX86_64* codegen)
73      : ParallelMoveResolver(allocator), codegen_(codegen) {}
74
75  void EmitMove(size_t index) OVERRIDE;
76  void EmitSwap(size_t index) OVERRIDE;
77  void SpillScratch(int reg) OVERRIDE;
78  void RestoreScratch(int reg) OVERRIDE;
79
80  X86_64Assembler* GetAssembler() const;
81
82 private:
83  void Exchange32(CpuRegister reg, int mem);
84  void Exchange32(XmmRegister reg, int mem);
85  void Exchange32(int mem1, int mem2);
86  void Exchange64(CpuRegister reg, int mem);
87  void Exchange64(XmmRegister reg, int mem);
88  void Exchange64(int mem1, int mem2);
89
90  CodeGeneratorX86_64* const codegen_;
91
92  DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverX86_64);
93};
94
95class LocationsBuilderX86_64 : public HGraphVisitor {
96 public:
97  LocationsBuilderX86_64(HGraph* graph, CodeGeneratorX86_64* codegen)
98      : HGraphVisitor(graph), codegen_(codegen) {}
99
100#define DECLARE_VISIT_INSTRUCTION(name, super)     \
101  void Visit##name(H##name* instr) OVERRIDE;
102
103  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
104
105#undef DECLARE_VISIT_INSTRUCTION
106
107 private:
108  void HandleInvoke(HInvoke* invoke);
109  void HandleBitwiseOperation(HBinaryOperation* operation);
110
111  CodeGeneratorX86_64* const codegen_;
112  InvokeDexCallingConventionVisitor parameter_visitor_;
113
114  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
115};
116
117class InstructionCodeGeneratorX86_64 : public HGraphVisitor {
118 public:
119  InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen);
120
121#define DECLARE_VISIT_INSTRUCTION(name, super)     \
122  void Visit##name(H##name* instr) OVERRIDE;
123
124  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
125
126#undef DECLARE_VISIT_INSTRUCTION
127
128  X86_64Assembler* GetAssembler() const { return assembler_; }
129
130 private:
131  // Generate code for the given suspend check. If not null, `successor`
132  // is the block to branch to if the suspend check is not needed, and after
133  // the suspend call.
134  void GenerateSuspendCheck(HSuspendCheck* instruction, HBasicBlock* successor);
135  void GenerateClassInitializationCheck(SlowPathCodeX86_64* slow_path, CpuRegister class_reg);
136  void HandleBitwiseOperation(HBinaryOperation* operation);
137  void GenerateDivRemIntegral(HBinaryOperation* instruction);
138
139  X86_64Assembler* const assembler_;
140  CodeGeneratorX86_64* const codegen_;
141
142  DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64);
143};
144
145class CodeGeneratorX86_64 : public CodeGenerator {
146 public:
147  explicit CodeGeneratorX86_64(HGraph* graph);
148  virtual ~CodeGeneratorX86_64() {}
149
150  void GenerateFrameEntry() OVERRIDE;
151  void GenerateFrameExit() OVERRIDE;
152  void Bind(HBasicBlock* block) OVERRIDE;
153  void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;
154  size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
155  size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
156  size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
157  size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
158
159  size_t GetWordSize() const OVERRIDE {
160    return kX86_64WordSize;
161  }
162
163  size_t FrameEntrySpillSize() const OVERRIDE;
164
165  HGraphVisitor* GetLocationBuilder() OVERRIDE {
166    return &location_builder_;
167  }
168
169  HGraphVisitor* GetInstructionVisitor() OVERRIDE {
170    return &instruction_visitor_;
171  }
172
173  X86_64Assembler* GetAssembler() OVERRIDE {
174    return &assembler_;
175  }
176
177  ParallelMoveResolverX86_64* GetMoveResolver() OVERRIDE {
178    return &move_resolver_;
179  }
180
181  uintptr_t GetAddressOf(HBasicBlock* block) const OVERRIDE {
182    return GetLabelOf(block)->Position();
183  }
184
185  Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
186
187  void SetupBlockedRegisters() const OVERRIDE;
188  Location AllocateFreeRegister(Primitive::Type type) const OVERRIDE;
189  void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
190  void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;
191
192  InstructionSet GetInstructionSet() const OVERRIDE {
193    return InstructionSet::kX86_64;
194  }
195
196  // Emit a write barrier.
197  void MarkGCCard(CpuRegister temp, CpuRegister card, CpuRegister object, CpuRegister value);
198
199  // Helper method to move a value between two locations.
200  void Move(Location destination, Location source);
201
202  void LoadCurrentMethod(CpuRegister reg);
203
204  Label* GetLabelOf(HBasicBlock* block) const {
205    return block_labels_.GetRawStorage() + block->GetBlockId();
206  }
207
208  void Initialize() OVERRIDE {
209    block_labels_.SetSize(GetGraph()->GetBlocks().Size());
210  }
211
212 private:
213  // Labels for each block that will be compiled.
214  GrowableArray<Label> block_labels_;
215  LocationsBuilderX86_64 location_builder_;
216  InstructionCodeGeneratorX86_64 instruction_visitor_;
217  ParallelMoveResolverX86_64 move_resolver_;
218  X86_64Assembler assembler_;
219
220  DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64);
221};
222
223}  // namespace x86_64
224}  // namespace art
225
226#endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
227