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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/compiler/instruction-selector-impl.h" | 5 #include "src/compiler/instruction-selector-impl.h" |
6 #include "src/compiler/node-matchers.h" | 6 #include "src/compiler/node-matchers.h" |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 namespace compiler { | 10 namespace compiler { |
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230 opcode = kCheckedLoadFloat64; | 230 opcode = kCheckedLoadFloat64; |
231 break; | 231 break; |
232 default: | 232 default: |
233 UNREACHABLE(); | 233 UNREACHABLE(); |
234 return; | 234 return; |
235 } | 235 } |
236 if (offset->opcode() == IrOpcode::kInt32Add && CanCover(node, offset)) { | 236 if (offset->opcode() == IrOpcode::kInt32Add && CanCover(node, offset)) { |
237 Int32Matcher mlength(length); | 237 Int32Matcher mlength(length); |
238 Int32BinopMatcher moffset(offset); | 238 Int32BinopMatcher moffset(offset); |
239 if (mlength.HasValue() && moffset.right().HasValue() && | 239 if (mlength.HasValue() && moffset.right().HasValue() && |
| 240 moffset.right().Value() >= 0 && |
240 mlength.Value() >= moffset.right().Value()) { | 241 mlength.Value() >= moffset.right().Value()) { |
241 Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer), | 242 Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer), |
242 g.UseRegister(moffset.left().node()), | 243 g.UseRegister(moffset.left().node()), |
243 g.UseImmediate(moffset.right().node()), g.UseImmediate(length)); | 244 g.UseImmediate(moffset.right().node()), g.UseImmediate(length)); |
244 return; | 245 return; |
245 } | 246 } |
246 } | 247 } |
247 InstructionOperand* length_operand = | 248 InstructionOperand* length_operand = |
248 g.CanBeImmediate(length) ? g.UseImmediate(length) : g.UseRegister(length); | 249 g.CanBeImmediate(length) ? g.UseImmediate(length) : g.UseRegister(length); |
249 Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer), | 250 Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer), |
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278 default: | 279 default: |
279 UNREACHABLE(); | 280 UNREACHABLE(); |
280 return; | 281 return; |
281 } | 282 } |
282 InstructionOperand* value_operand = | 283 InstructionOperand* value_operand = |
283 g.CanBeImmediate(value) ? g.UseImmediate(value) : g.UseRegister(value); | 284 g.CanBeImmediate(value) ? g.UseImmediate(value) : g.UseRegister(value); |
284 if (offset->opcode() == IrOpcode::kInt32Add && CanCover(node, offset)) { | 285 if (offset->opcode() == IrOpcode::kInt32Add && CanCover(node, offset)) { |
285 Int32Matcher mlength(length); | 286 Int32Matcher mlength(length); |
286 Int32BinopMatcher moffset(offset); | 287 Int32BinopMatcher moffset(offset); |
287 if (mlength.HasValue() && moffset.right().HasValue() && | 288 if (mlength.HasValue() && moffset.right().HasValue() && |
| 289 moffset.right().Value() >= 0 && |
288 mlength.Value() >= moffset.right().Value()) { | 290 mlength.Value() >= moffset.right().Value()) { |
289 Emit(opcode, nullptr, g.UseRegister(buffer), | 291 Emit(opcode, nullptr, g.UseRegister(buffer), |
290 g.UseRegister(moffset.left().node()), | 292 g.UseRegister(moffset.left().node()), |
291 g.UseImmediate(moffset.right().node()), g.UseImmediate(length), | 293 g.UseImmediate(moffset.right().node()), g.UseImmediate(length), |
292 value_operand); | 294 value_operand); |
293 return; | 295 return; |
294 } | 296 } |
295 } | 297 } |
296 InstructionOperand* length_operand = | 298 InstructionOperand* length_operand = |
297 g.CanBeImmediate(length) ? g.UseImmediate(length) : g.UseRegister(length); | 299 g.CanBeImmediate(length) ? g.UseImmediate(length) : g.UseRegister(length); |
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1308 MachineOperatorBuilder::kFloat64Ceil | | 1310 MachineOperatorBuilder::kFloat64Ceil | |
1309 MachineOperatorBuilder::kFloat64RoundTruncate | | 1311 MachineOperatorBuilder::kFloat64RoundTruncate | |
1310 MachineOperatorBuilder::kWord32ShiftIsSafe; | 1312 MachineOperatorBuilder::kWord32ShiftIsSafe; |
1311 } | 1313 } |
1312 return MachineOperatorBuilder::kNoFlags; | 1314 return MachineOperatorBuilder::kNoFlags; |
1313 } | 1315 } |
1314 | 1316 |
1315 } // namespace compiler | 1317 } // namespace compiler |
1316 } // namespace internal | 1318 } // namespace internal |
1317 } // namespace v8 | 1319 } // namespace v8 |
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