code_generator_x86_64.h revision 878d58cbaf6b17a9e3dcab790754527f3ebc69e5 
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 "dex/compiler_enums.h"
22#include "driver/compiler_options.h"
23#include "nodes.h"
24#include "parallel_move_resolver.h"
25#include "utils/x86_64/assembler_x86_64.h"
26
27namespace art {
28namespace x86_64 {
29
30// Use a local definition to prevent copying mistakes.
31static constexpr size_t kX86_64WordSize = kX86_64PointerSize;
32
33static constexpr Register kParameterCoreRegisters[] = { RSI, RDX, RCX, R8, R9 };
34static constexpr FloatRegister kParameterFloatRegisters[] =
35    { XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7 };
36
37static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
38static constexpr size_t kParameterFloatRegistersLength = arraysize(kParameterFloatRegisters);
39
40class InvokeDexCallingConvention : public CallingConvention<Register, FloatRegister> {
41 public:
42  InvokeDexCallingConvention() : CallingConvention(
43      kParameterCoreRegisters,
44      kParameterCoreRegistersLength,
45      kParameterFloatRegisters,
46      kParameterFloatRegistersLength) {}
47
48 private:
49  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
50};
51
52class InvokeDexCallingConventionVisitor {
53 public:
54  InvokeDexCallingConventionVisitor() : gp_index_(0), fp_index_(0), stack_index_(0) {}
55
56  Location GetNextLocation(Primitive::Type type);
57
58 private:
59  InvokeDexCallingConvention calling_convention;
60  // The current index for cpu registers.
61  uint32_t gp_index_;
62  // The current index for fpu registers.
63  uint32_t fp_index_;
64  // The current stack index.
65  uint32_t stack_index_;
66
67  DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitor);
68};
69
70class CodeGeneratorX86_64;
71
72class SlowPathCodeX86_64 : public SlowPathCode {
73 public:
74  SlowPathCodeX86_64() : entry_label_(), exit_label_() {}
75
76  Label* GetEntryLabel() { return &entry_label_; }
77  Label* GetExitLabel() { return &exit_label_; }
78
79 private:
80  Label entry_label_;
81  Label exit_label_;
82
83  DISALLOW_COPY_AND_ASSIGN(SlowPathCodeX86_64);
84};
85
86class ParallelMoveResolverX86_64 : public ParallelMoveResolver {
87 public:
88  ParallelMoveResolverX86_64(ArenaAllocator* allocator, CodeGeneratorX86_64* codegen)
89      : ParallelMoveResolver(allocator), codegen_(codegen) {}
90
91  void EmitMove(size_t index) OVERRIDE;
92  void EmitSwap(size_t index) OVERRIDE;
93  void SpillScratch(int reg) OVERRIDE;
94  void RestoreScratch(int reg) OVERRIDE;
95
96  X86_64Assembler* GetAssembler() const;
97
98 private:
99  void Exchange32(CpuRegister reg, int mem);
100  void Exchange32(XmmRegister reg, int mem);
101  void Exchange32(int mem1, int mem2);
102  void Exchange64(CpuRegister reg, int mem);
103  void Exchange64(XmmRegister reg, int mem);
104  void Exchange64(int mem1, int mem2);
105
106  CodeGeneratorX86_64* const codegen_;
107
108  DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverX86_64);
109};
110
111class LocationsBuilderX86_64 : public HGraphVisitor {
112 public:
113  LocationsBuilderX86_64(HGraph* graph, CodeGeneratorX86_64* codegen)
114      : HGraphVisitor(graph), codegen_(codegen) {}
115
116#define DECLARE_VISIT_INSTRUCTION(name, super)     \
117  void Visit##name(H##name* instr) OVERRIDE;
118
119  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
120
121#undef DECLARE_VISIT_INSTRUCTION
122
123 private:
124  void HandleInvoke(HInvoke* invoke);
125  void HandleBitwiseOperation(HBinaryOperation* operation);
126  void HandleShift(HBinaryOperation* operation);
127  void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
128  void HandleFieldGet(HInstruction* instruction);
129
130  CodeGeneratorX86_64* const codegen_;
131  InvokeDexCallingConventionVisitor parameter_visitor_;
132
133  DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86_64);
134};
135
136class InstructionCodeGeneratorX86_64 : public HGraphVisitor {
137 public:
138  InstructionCodeGeneratorX86_64(HGraph* graph, CodeGeneratorX86_64* codegen);
139
140#define DECLARE_VISIT_INSTRUCTION(name, super)     \
141  void Visit##name(H##name* instr) OVERRIDE;
142
143  FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
144
145#undef DECLARE_VISIT_INSTRUCTION
146
147  X86_64Assembler* GetAssembler() const { return assembler_; }
148
149 private:
150  // Generate code for the given suspend check. If not null, `successor`
151  // is the block to branch to if the suspend check is not needed, and after
152  // the suspend call.
153  void GenerateSuspendCheck(HSuspendCheck* instruction, HBasicBlock* successor);
154  void GenerateClassInitializationCheck(SlowPathCodeX86_64* slow_path, CpuRegister class_reg);
155  void HandleBitwiseOperation(HBinaryOperation* operation);
156  void GenerateRemFP(HRem *rem);
157  void GenerateDivRemIntegral(HBinaryOperation* instruction);
158  void HandleShift(HBinaryOperation* operation);
159  void GenerateMemoryBarrier(MemBarrierKind kind);
160  void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
161  void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
162  void GenerateImplicitNullCheck(HNullCheck* instruction);
163  void GenerateExplicitNullCheck(HNullCheck* instruction);
164  void PushOntoFPStack(Location source, uint32_t temp_offset,
165                       uint32_t stack_adjustment, bool is_float);
166
167  X86_64Assembler* const assembler_;
168  CodeGeneratorX86_64* const codegen_;
169
170  DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86_64);
171};
172
173class CodeGeneratorX86_64 : public CodeGenerator {
174 public:
175  CodeGeneratorX86_64(HGraph* graph, const CompilerOptions& compiler_options);
176  virtual ~CodeGeneratorX86_64() {}
177
178  void GenerateFrameEntry() OVERRIDE;
179  void GenerateFrameExit() OVERRIDE;
180  void Bind(HBasicBlock* block) OVERRIDE;
181  void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;
182  size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
183  size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
184  size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
185  size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE;
186
187  size_t GetWordSize() const OVERRIDE {
188    return kX86_64WordSize;
189  }
190
191  size_t GetFloatingPointSpillSlotSize() const OVERRIDE {
192    return kX86_64WordSize;
193  }
194
195  HGraphVisitor* GetLocationBuilder() OVERRIDE {
196    return &location_builder_;
197  }
198
199  HGraphVisitor* GetInstructionVisitor() OVERRIDE {
200    return &instruction_visitor_;
201  }
202
203  X86_64Assembler* GetAssembler() OVERRIDE {
204    return &assembler_;
205  }
206
207  ParallelMoveResolverX86_64* GetMoveResolver() OVERRIDE {
208    return &move_resolver_;
209  }
210
211  uintptr_t GetAddressOf(HBasicBlock* block) const OVERRIDE {
212    return GetLabelOf(block)->Position();
213  }
214
215  Location GetStackLocation(HLoadLocal* load) const OVERRIDE;
216
217  void SetupBlockedRegisters(bool is_baseline) const OVERRIDE;
218  Location AllocateFreeRegister(Primitive::Type type) const OVERRIDE;
219  void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
220  void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;
221
222  InstructionSet GetInstructionSet() const OVERRIDE {
223    return InstructionSet::kX86_64;
224  }
225
226  // Emit a write barrier.
227  void MarkGCCard(CpuRegister temp, CpuRegister card, CpuRegister object, CpuRegister value);
228
229  // Helper method to move a value between two locations.
230  void Move(Location destination, Location source);
231
232  void LoadCurrentMethod(CpuRegister reg);
233
234  Label* GetLabelOf(HBasicBlock* block) const {
235    return block_labels_.GetRawStorage() + block->GetBlockId();
236  }
237
238  void Initialize() OVERRIDE {
239    block_labels_.SetSize(GetGraph()->GetBlocks().Size());
240  }
241
242  bool NeedsTwoRegisters(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE {
243    return false;
244  }
245
246  void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, CpuRegister temp);
247
248 private:
249  // Labels for each block that will be compiled.
250  GrowableArray<Label> block_labels_;
251  LocationsBuilderX86_64 location_builder_;
252  InstructionCodeGeneratorX86_64 instruction_visitor_;
253  ParallelMoveResolverX86_64 move_resolver_;
254  X86_64Assembler assembler_;
255
256  DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86_64);
257};
258
259}  // namespace x86_64
260}  // namespace art
261
262#endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_64_H_
263