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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/interpreter/bytecode-array-builder.h" | 7 #include "src/interpreter/bytecode-array-builder.h" |
8 #include "src/interpreter/bytecode-array-iterator.h" | 8 #include "src/interpreter/bytecode-array-iterator.h" |
9 #include "src/interpreter/bytecode-label.h" | 9 #include "src/interpreter/bytecode-label.h" |
10 #include "src/interpreter/bytecode-register-allocator.h" | 10 #include "src/interpreter/bytecode-register-allocator.h" |
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193 // Emit control flow. Return must be the last instruction. | 193 // Emit control flow. Return must be the last instruction. |
194 BytecodeLabel start; | 194 BytecodeLabel start; |
195 builder.Bind(&start); | 195 builder.Bind(&start); |
196 { | 196 { |
197 // Short jumps with Imm8 operands | 197 // Short jumps with Imm8 operands |
198 BytecodeLabel after_jump; | 198 BytecodeLabel after_jump; |
199 builder.Jump(&start) | 199 builder.Jump(&start) |
200 .Bind(&after_jump) | 200 .Bind(&after_jump) |
201 .JumpIfNull(&start) | 201 .JumpIfNull(&start) |
202 .JumpIfUndefined(&start) | 202 .JumpIfUndefined(&start) |
203 .JumpIfNotHole(&start); | 203 .JumpIfNotHole(&start) |
| 204 .JumpLoop(&start, 0); |
204 } | 205 } |
205 | 206 |
206 // Longer jumps with constant operands | 207 // Longer jumps with constant operands |
207 BytecodeLabel end[8]; | 208 BytecodeLabel end[8]; |
208 { | 209 { |
209 BytecodeLabel after_jump; | 210 BytecodeLabel after_jump; |
210 builder.Jump(&end[0]) | 211 builder.Jump(&end[0]) |
211 .Bind(&after_jump) | 212 .Bind(&after_jump) |
212 .LoadTrue() | 213 .LoadTrue() |
213 .JumpIfTrue(&end[1]) | 214 .JumpIfTrue(&end[1]) |
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256 // generate JumpIfToBooleanTrue/False. | 257 // generate JumpIfToBooleanTrue/False. |
257 builder.BinaryOperation(Token::Value::ADD, reg, 1) | 258 builder.BinaryOperation(Token::Value::ADD, reg, 1) |
258 .JumpIfTrue(&start) | 259 .JumpIfTrue(&start) |
259 .BinaryOperation(Token::Value::ADD, reg, 2) | 260 .BinaryOperation(Token::Value::ADD, reg, 2) |
260 .JumpIfFalse(&start); | 261 .JumpIfFalse(&start); |
261 } | 262 } |
262 | 263 |
263 // Emit stack check bytecode. | 264 // Emit stack check bytecode. |
264 builder.StackCheck(0); | 265 builder.StackCheck(0); |
265 | 266 |
266 // Emit an OSR poll bytecode. | |
267 builder.OsrPoll(1); | |
268 | |
269 // Emit throw and re-throw in it's own basic block so that the rest of the | 267 // Emit throw and re-throw in it's own basic block so that the rest of the |
270 // code isn't omitted due to being dead. | 268 // code isn't omitted due to being dead. |
271 BytecodeLabel after_throw; | 269 BytecodeLabel after_throw; |
272 builder.Throw().Bind(&after_throw); | 270 builder.Throw().Bind(&after_throw); |
273 BytecodeLabel after_rethrow; | 271 BytecodeLabel after_rethrow; |
274 builder.ReThrow().Bind(&after_rethrow); | 272 builder.ReThrow().Bind(&after_rethrow); |
275 | 273 |
276 builder.ForInPrepare(reg, reg) | 274 builder.ForInPrepare(reg, reg) |
277 .ForInContinue(reg, reg) | 275 .ForInContinue(reg, reg) |
278 .ForInNext(reg, reg, reg, 1) | 276 .ForInNext(reg, reg, reg, 1) |
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855 iterator.Advance(); | 853 iterator.Advance(); |
856 } | 854 } |
857 CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn); | 855 CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn); |
858 iterator.Advance(); | 856 iterator.Advance(); |
859 CHECK(iterator.done()); | 857 CHECK(iterator.done()); |
860 } | 858 } |
861 | 859 |
862 } // namespace interpreter | 860 } // namespace interpreter |
863 } // namespace internal | 861 } // namespace internal |
864 } // namespace v8 | 862 } // namespace v8 |
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