Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4 | |
| 5 | #ifndef V8_IA32_LITHIUM_CODEGEN_IA32_H_ |
| 6 | #define V8_IA32_LITHIUM_CODEGEN_IA32_H_ |
| 7 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #include "src/ia32/lithium-ia32.h" |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 9 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 10 | #include "src/base/logging.h" |
| 11 | #include "src/deoptimizer.h" |
| 12 | #include "src/ia32/lithium-gap-resolver-ia32.h" |
| 13 | #include "src/lithium-codegen.h" |
| 14 | #include "src/safepoint-table.h" |
| 15 | #include "src/scopes.h" |
| 16 | #include "src/utils.h" |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 17 | |
| 18 | namespace v8 { |
| 19 | namespace internal { |
| 20 | |
| 21 | // Forward declarations. |
| 22 | class LDeferredCode; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 23 | class LGapNode; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 24 | class SafepointGenerator; |
| 25 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 26 | class LCodeGen: public LCodeGenBase { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 27 | public: |
| 28 | LCodeGen(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 29 | : LCodeGenBase(chunk, assembler, info), |
| 30 | deoptimizations_(4, info->zone()), |
| 31 | jump_table_(4, info->zone()), |
| 32 | deoptimization_literals_(8, info->zone()), |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 33 | inlined_function_count_(0), |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 34 | scope_(info->scope()), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | translations_(info->zone()), |
| 36 | deferred_(8, info->zone()), |
| 37 | dynamic_frame_alignment_(false), |
| 38 | support_aligned_spilled_doubles_(false), |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 39 | osr_pc_offset_(-1), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 40 | frame_is_built_(false), |
| 41 | safepoints_(info->zone()), |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 42 | resolver_(this), |
| 43 | expected_safepoint_kind_(Safepoint::kSimple) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 44 | PopulateDeoptimizationLiteralsWithInlinedFunctions(); |
| 45 | } |
| 46 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 47 | int LookupDestination(int block_id) const { |
| 48 | return chunk()->LookupDestination(block_id); |
| 49 | } |
| 50 | |
| 51 | bool IsNextEmittedBlock(int block_id) const { |
| 52 | return LookupDestination(block_id) == GetNextEmittedBlock(); |
| 53 | } |
| 54 | |
| 55 | bool NeedsEagerFrame() const { |
| 56 | return GetStackSlotCount() > 0 || |
| 57 | info()->is_non_deferred_calling() || |
| 58 | !info()->IsStub() || |
| 59 | info()->requires_frame(); |
| 60 | } |
| 61 | bool NeedsDeferredFrame() const { |
| 62 | return !NeedsEagerFrame() && info()->is_deferred_calling(); |
| 63 | } |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 64 | |
| 65 | // Support for converting LOperands to assembler types. |
| 66 | Operand ToOperand(LOperand* op) const; |
| 67 | Register ToRegister(LOperand* op) const; |
| 68 | XMMRegister ToDoubleRegister(LOperand* op) const; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 69 | |
| 70 | bool IsInteger32(LConstantOperand* op) const; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 71 | bool IsSmi(LConstantOperand* op) const; |
| 72 | Immediate ToImmediate(LOperand* op, const Representation& r) const { |
| 73 | return Immediate(ToRepresentation(LConstantOperand::cast(op), r)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 74 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | double ToDouble(LConstantOperand* op) const; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 76 | |
| 77 | Handle<Object> ToHandle(LConstantOperand* op) const; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 78 | |
| 79 | // The operand denoting the second word (the one with a higher address) of |
| 80 | // a double stack slot. |
| 81 | Operand HighOperand(LOperand* op); |
| 82 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 83 | // Try to generate code for the entire chunk, but it may fail if the |
| 84 | // chunk contains constructs we cannot handle. Returns true if the |
| 85 | // code generation attempt succeeded. |
| 86 | bool GenerateCode(); |
| 87 | |
| 88 | // Finish the code by setting stack height, safepoint, and bailout |
| 89 | // information on it. |
| 90 | void FinishCode(Handle<Code> code); |
| 91 | |
| 92 | // Deferred code support. |
| 93 | void DoDeferredNumberTagD(LNumberTagD* instr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 94 | |
| 95 | enum IntegerSignedness { SIGNED_INT32, UNSIGNED_INT32 }; |
| 96 | void DoDeferredNumberTagIU(LInstruction* instr, |
| 97 | LOperand* value, |
| 98 | LOperand* temp, |
| 99 | IntegerSignedness signedness); |
| 100 | |
| 101 | void DoDeferredTaggedToI(LTaggedToI* instr, Label* done); |
| 102 | void DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 103 | void DoDeferredStackCheck(LStackCheck* instr); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 104 | void DoDeferredStringCharCodeAt(LStringCharCodeAt* instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 105 | void DoDeferredStringCharFromCode(LStringCharFromCode* instr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 106 | void DoDeferredAllocate(LAllocate* instr); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 107 | void DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 108 | Label* map_check); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 109 | void DoDeferredInstanceMigration(LCheckMaps* instr, Register object); |
| 110 | void DoDeferredLoadMutableDouble(LLoadFieldByIndex* instr, |
| 111 | Register object, |
| 112 | Register index); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 113 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 114 | // Parallel move support. |
| 115 | void DoParallelMove(LParallelMove* move); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 116 | void DoGap(LGap* instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 117 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 118 | // Emit frame translation commands for an environment. |
| 119 | void WriteTranslation(LEnvironment* environment, Translation* translation); |
| 120 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 121 | void EnsureRelocSpaceForDeoptimization(); |
| 122 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 123 | // Declare methods that deal with the individual node types. |
| 124 | #define DECLARE_DO(type) void Do##type(L##type* node); |
| 125 | LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_DO) |
| 126 | #undef DECLARE_DO |
| 127 | |
| 128 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 129 | StrictMode strict_mode() const { return info()->strict_mode(); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 130 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 131 | Scope* scope() const { return scope_; } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 132 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 133 | XMMRegister double_scratch0() const { return xmm0; } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 134 | |
| 135 | void EmitClassOfTest(Label* if_true, |
| 136 | Label* if_false, |
| 137 | Handle<String> class_name, |
| 138 | Register input, |
| 139 | Register temporary, |
| 140 | Register temporary2); |
| 141 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 142 | int GetStackSlotCount() const { return chunk()->spill_slot_count(); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 143 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 144 | void AddDeferredCode(LDeferredCode* code) { deferred_.Add(code, zone()); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 145 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 146 | void SaveCallerDoubles(); |
| 147 | void RestoreCallerDoubles(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 148 | |
| 149 | // Code generation passes. Returns true if code generation should |
| 150 | // continue. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 151 | void GenerateBodyInstructionPre(LInstruction* instr) OVERRIDE; |
| 152 | void GenerateBodyInstructionPost(LInstruction* instr) OVERRIDE; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 153 | bool GeneratePrologue(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 154 | bool GenerateDeferredCode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 155 | bool GenerateJumpTable(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 156 | bool GenerateSafepointTable(); |
| 157 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 158 | // Generates the custom OSR entrypoint and sets the osr_pc_offset. |
| 159 | void GenerateOsrPrologue(); |
| 160 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 161 | enum SafepointMode { |
| 162 | RECORD_SIMPLE_SAFEPOINT, |
| 163 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS |
| 164 | }; |
| 165 | |
| 166 | void CallCode(Handle<Code> code, |
| 167 | RelocInfo::Mode mode, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 168 | LInstruction* instr); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 169 | |
| 170 | void CallCodeGeneric(Handle<Code> code, |
| 171 | RelocInfo::Mode mode, |
| 172 | LInstruction* instr, |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 173 | SafepointMode safepoint_mode); |
| 174 | |
| 175 | void CallRuntime(const Runtime::Function* fun, |
| 176 | int argc, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 177 | LInstruction* instr, |
| 178 | SaveFPRegsMode save_doubles = kDontSaveFPRegs); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 179 | |
| 180 | void CallRuntime(Runtime::FunctionId id, |
| 181 | int argc, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 182 | LInstruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 183 | const Runtime::Function* function = Runtime::FunctionForId(id); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 184 | CallRuntime(function, argc, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 185 | } |
| 186 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 187 | void CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 188 | int argc, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 189 | LInstruction* instr, |
| 190 | LOperand* context); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 191 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 192 | void LoadContextFromDeferred(LOperand* context); |
| 193 | |
| 194 | enum EDIState { |
| 195 | EDI_UNINITIALIZED, |
| 196 | EDI_CONTAINS_TARGET |
| 197 | }; |
| 198 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 199 | // Generate a direct call to a known function. Expects the function |
| 200 | // to be in edi. |
| 201 | void CallKnownFunction(Handle<JSFunction> function, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 202 | int formal_parameter_count, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 203 | int arity, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 204 | LInstruction* instr, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 205 | EDIState edi_state); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 206 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 207 | void RecordSafepointWithLazyDeopt(LInstruction* instr, |
| 208 | SafepointMode safepoint_mode); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 209 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 210 | void RegisterEnvironmentForDeoptimization(LEnvironment* environment, |
| 211 | Safepoint::DeoptMode mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 212 | void DeoptimizeIf(Condition cc, LInstruction* instr, const char* detail, |
| 213 | Deoptimizer::BailoutType bailout_type); |
| 214 | void DeoptimizeIf(Condition cc, LInstruction* instr, const char* detail); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 215 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 216 | bool DeoptEveryNTimes() { |
| 217 | return FLAG_deopt_every_n_times != 0 && !info()->IsStub(); |
| 218 | } |
| 219 | |
| 220 | void AddToTranslation(LEnvironment* environment, |
| 221 | Translation* translation, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 222 | LOperand* op, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 223 | bool is_tagged, |
| 224 | bool is_uint32, |
| 225 | int* object_index_pointer, |
| 226 | int* dematerialized_index_pointer); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 227 | void PopulateDeoptimizationData(Handle<Code> code); |
| 228 | int DefineDeoptimizationLiteral(Handle<Object> literal); |
| 229 | |
| 230 | void PopulateDeoptimizationLiteralsWithInlinedFunctions(); |
| 231 | |
| 232 | Register ToRegister(int index) const; |
| 233 | XMMRegister ToDoubleRegister(int index) const; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 234 | int32_t ToRepresentation(LConstantOperand* op, const Representation& r) const; |
| 235 | int32_t ToInteger32(LConstantOperand* op) const; |
| 236 | ExternalReference ToExternalReference(LConstantOperand* op) const; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 237 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 238 | Operand BuildFastArrayOperand(LOperand* elements_pointer, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 239 | LOperand* key, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 240 | Representation key_representation, |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 241 | ElementsKind elements_kind, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 242 | uint32_t base_offset); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 243 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 244 | Operand BuildSeqStringOperand(Register string, |
| 245 | LOperand* index, |
| 246 | String::Encoding encoding); |
| 247 | |
| 248 | void EmitIntegerMathAbs(LMathAbs* instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 249 | |
| 250 | // Support for recording safepoint and position information. |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 251 | void RecordSafepoint(LPointerMap* pointers, |
| 252 | Safepoint::Kind kind, |
| 253 | int arguments, |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 254 | Safepoint::DeoptMode mode); |
| 255 | void RecordSafepoint(LPointerMap* pointers, Safepoint::DeoptMode mode); |
| 256 | void RecordSafepoint(Safepoint::DeoptMode mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 257 | void RecordSafepointWithRegisters(LPointerMap* pointers, |
| 258 | int arguments, |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 259 | Safepoint::DeoptMode mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 260 | |
| 261 | void RecordAndWritePosition(int position) OVERRIDE; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 262 | |
| 263 | static Condition TokenToCondition(Token::Value op, bool is_unsigned); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 264 | void EmitGoto(int block); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 265 | |
| 266 | // EmitBranch expects to be the last instruction of a block. |
| 267 | template<class InstrType> |
| 268 | void EmitBranch(InstrType instr, Condition cc); |
| 269 | template<class InstrType> |
| 270 | void EmitFalseBranch(InstrType instr, Condition cc); |
| 271 | void EmitNumberUntagD(LNumberUntagD* instr, Register input, Register temp, |
| 272 | XMMRegister result, NumberUntagDMode mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 273 | |
| 274 | // Emits optimized code for typeof x == "y". Modifies input register. |
| 275 | // Returns the condition on which a final split to |
| 276 | // true and false label should be made, to optimize fallthrough. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 277 | Condition EmitTypeofIs(LTypeofIsAndBranch* instr, Register input); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 278 | |
| 279 | // Emits optimized code for %_IsObject(x). Preserves input register. |
| 280 | // Returns the condition on which a final split to |
| 281 | // true and false label should be made, to optimize fallthrough. |
| 282 | Condition EmitIsObject(Register input, |
| 283 | Register temp1, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 284 | Label* is_not_object, |
| 285 | Label* is_object); |
| 286 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 287 | // Emits optimized code for %_IsString(x). Preserves input register. |
| 288 | // Returns the condition on which a final split to |
| 289 | // true and false label should be made, to optimize fallthrough. |
| 290 | Condition EmitIsString(Register input, |
| 291 | Register temp1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 292 | Label* is_not_string, |
| 293 | SmiCheck check_needed); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 294 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 295 | // Emits optimized code for %_IsConstructCall(). |
| 296 | // Caller should branch on equal condition. |
| 297 | void EmitIsConstructCall(Register temp); |
| 298 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 299 | // Emits optimized code to deep-copy the contents of statically known |
| 300 | // object graphs (e.g. object literal boilerplate). |
| 301 | void EmitDeepCopy(Handle<JSObject> object, |
| 302 | Register result, |
| 303 | Register source, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 304 | int* offset, |
| 305 | AllocationSiteMode mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 306 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 307 | void EnsureSpaceForLazyDeopt(int space_needed) OVERRIDE; |
| 308 | void DoLoadKeyedExternalArray(LLoadKeyed* instr); |
| 309 | void DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr); |
| 310 | void DoLoadKeyedFixedArray(LLoadKeyed* instr); |
| 311 | void DoStoreKeyedExternalArray(LStoreKeyed* instr); |
| 312 | void DoStoreKeyedFixedDoubleArray(LStoreKeyed* instr); |
| 313 | void DoStoreKeyedFixedArray(LStoreKeyed* instr); |
| 314 | |
| 315 | template <class T> |
| 316 | void EmitVectorLoadICRegisters(T* instr); |
| 317 | |
| 318 | void EmitReturn(LReturn* instr, bool dynamic_frame_alignment); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 319 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 320 | // Emits code for pushing either a tagged constant, a (non-double) |
| 321 | // register, or a stack slot operand. |
| 322 | void EmitPushTaggedOperand(LOperand* operand); |
| 323 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 324 | friend class LGapResolver; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 325 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 326 | #ifdef _MSC_VER |
| 327 | // On windows, you may not access the stack more than one page below |
| 328 | // the most recently mapped page. To make the allocated area randomly |
| 329 | // accessible, we write an arbitrary value to each page in range |
| 330 | // esp + offset - page_size .. esp in turn. |
| 331 | void MakeSureStackPagesMapped(int offset); |
| 332 | #endif |
| 333 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 334 | ZoneList<LEnvironment*> deoptimizations_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 335 | ZoneList<Deoptimizer::JumpTableEntry> jump_table_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 336 | ZoneList<Handle<Object> > deoptimization_literals_; |
| 337 | int inlined_function_count_; |
| 338 | Scope* const scope_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 339 | TranslationBuffer translations_; |
| 340 | ZoneList<LDeferredCode*> deferred_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 341 | bool dynamic_frame_alignment_; |
| 342 | bool support_aligned_spilled_doubles_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 343 | int osr_pc_offset_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 344 | bool frame_is_built_; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 345 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 346 | // Builder that keeps track of safepoints in the code. The table |
| 347 | // itself is emitted at the end of the generated code. |
| 348 | SafepointTableBuilder safepoints_; |
| 349 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 350 | // Compiler from a set of parallel moves to a sequential list of moves. |
| 351 | LGapResolver resolver_; |
| 352 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 353 | Safepoint::Kind expected_safepoint_kind_; |
| 354 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 355 | class PushSafepointRegistersScope FINAL BASE_EMBEDDED { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 356 | public: |
| 357 | explicit PushSafepointRegistersScope(LCodeGen* codegen) |
| 358 | : codegen_(codegen) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 359 | DCHECK(codegen_->expected_safepoint_kind_ == Safepoint::kSimple); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 360 | codegen_->masm_->PushSafepointRegisters(); |
| 361 | codegen_->expected_safepoint_kind_ = Safepoint::kWithRegisters; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 362 | DCHECK(codegen_->info()->is_calling()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | ~PushSafepointRegistersScope() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 366 | DCHECK(codegen_->expected_safepoint_kind_ == Safepoint::kWithRegisters); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 367 | codegen_->masm_->PopSafepointRegisters(); |
| 368 | codegen_->expected_safepoint_kind_ = Safepoint::kSimple; |
| 369 | } |
| 370 | |
| 371 | private: |
| 372 | LCodeGen* codegen_; |
| 373 | }; |
| 374 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 375 | friend class LDeferredCode; |
| 376 | friend class LEnvironment; |
| 377 | friend class SafepointGenerator; |
| 378 | DISALLOW_COPY_AND_ASSIGN(LCodeGen); |
| 379 | }; |
| 380 | |
| 381 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 382 | class LDeferredCode : public ZoneObject { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 383 | public: |
| 384 | explicit LDeferredCode(LCodeGen* codegen) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 385 | : codegen_(codegen), |
| 386 | external_exit_(NULL), |
| 387 | instruction_index_(codegen->current_instruction_) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 388 | codegen->AddDeferredCode(this); |
| 389 | } |
| 390 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 391 | virtual ~LDeferredCode() {} |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 392 | virtual void Generate() = 0; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 393 | virtual LInstruction* instr() = 0; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 394 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 395 | void SetExit(Label* exit) { external_exit_ = exit; } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 396 | Label* entry() { return &entry_; } |
| 397 | Label* exit() { return external_exit_ != NULL ? external_exit_ : &exit_; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 398 | Label* done() { return codegen_->NeedsDeferredFrame() ? &done_ : exit(); } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 399 | int instruction_index() const { return instruction_index_; } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 400 | |
| 401 | protected: |
| 402 | LCodeGen* codegen() const { return codegen_; } |
| 403 | MacroAssembler* masm() const { return codegen_->masm(); } |
| 404 | |
| 405 | private: |
| 406 | LCodeGen* codegen_; |
| 407 | Label entry_; |
| 408 | Label exit_; |
| 409 | Label* external_exit_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 410 | Label done_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 411 | int instruction_index_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 412 | }; |
| 413 | |
| 414 | } } // namespace v8::internal |
| 415 | |
| 416 | #endif // V8_IA32_LITHIUM_CODEGEN_IA32_H_ |