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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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/representation-change.h" | 5 #include "src/compiler/representation-change.h" |
6 | 6 |
7 #include <sstream> | 7 #include <sstream> |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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359 // Either the output is uint32 or the uses only care about the | 359 // Either the output is uint32 or the uses only care about the |
360 // low 32 bits (so we can pick uint32 safely). | 360 // low 32 bits (so we can pick uint32 safely). |
361 op = simplified()->ChangeUint32ToTagged(); | 361 op = simplified()->ChangeUint32ToTagged(); |
362 } else { | 362 } else { |
363 return TypeError(node, output_rep, output_type, | 363 return TypeError(node, output_rep, output_type, |
364 MachineRepresentation::kTagged); | 364 MachineRepresentation::kTagged); |
365 } | 365 } |
366 } else if (output_rep == | 366 } else if (output_rep == |
367 MachineRepresentation::kFloat32) { // float32 -> float64 -> tagged | 367 MachineRepresentation::kFloat32) { // float32 -> float64 -> tagged |
368 node = InsertChangeFloat32ToFloat64(node); | 368 node = InsertChangeFloat32ToFloat64(node); |
369 op = simplified()->ChangeFloat64ToTagged( | 369 op = simplified()->ChangeFloat64ToTagged(); |
370 output_type->Maybe(Type::MinusZero()) | |
371 ? CheckForMinusZeroMode::kCheckForMinusZero | |
372 : CheckForMinusZeroMode::kDontCheckForMinusZero); | |
373 } else if (output_rep == MachineRepresentation::kFloat64) { | 370 } else if (output_rep == MachineRepresentation::kFloat64) { |
374 if (output_type->Is(Type::Signed31())) { // float64 -> int32 -> tagged | 371 if (output_type->Is(Type::Signed31())) { // float64 -> int32 -> tagged |
375 node = InsertChangeFloat64ToInt32(node); | 372 node = InsertChangeFloat64ToInt32(node); |
376 op = simplified()->ChangeInt31ToTaggedSigned(); | 373 op = simplified()->ChangeInt31ToTaggedSigned(); |
377 } else if (output_type->Is( | 374 } else if (output_type->Is( |
378 Type::Signed32())) { // float64 -> int32 -> tagged | 375 Type::Signed32())) { // float64 -> int32 -> tagged |
379 node = InsertChangeFloat64ToInt32(node); | 376 node = InsertChangeFloat64ToInt32(node); |
380 op = simplified()->ChangeInt32ToTagged(); | 377 op = simplified()->ChangeInt32ToTagged(); |
381 } else if (output_type->Is( | 378 } else if (output_type->Is( |
382 Type::Unsigned32())) { // float64 -> uint32 -> tagged | 379 Type::Unsigned32())) { // float64 -> uint32 -> tagged |
383 node = InsertChangeFloat64ToUint32(node); | 380 node = InsertChangeFloat64ToUint32(node); |
384 op = simplified()->ChangeUint32ToTagged(); | 381 op = simplified()->ChangeUint32ToTagged(); |
385 } else { | 382 } else { |
386 op = simplified()->ChangeFloat64ToTagged( | 383 op = simplified()->ChangeFloat64ToTagged(); |
387 output_type->Maybe(Type::MinusZero()) | |
388 ? CheckForMinusZeroMode::kCheckForMinusZero | |
389 : CheckForMinusZeroMode::kDontCheckForMinusZero); | |
390 } | 384 } |
391 } else { | 385 } else { |
392 return TypeError(node, output_rep, output_type, | 386 return TypeError(node, output_rep, output_type, |
393 MachineRepresentation::kTagged); | 387 MachineRepresentation::kTagged); |
394 } | 388 } |
395 return jsgraph()->graph()->NewNode(op, node); | 389 return jsgraph()->graph()->NewNode(op, node); |
396 } | 390 } |
397 | 391 |
398 | 392 |
399 Node* RepresentationChanger::GetFloat32RepresentationFor( | 393 Node* RepresentationChanger::GetFloat32RepresentationFor( |
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995 } | 989 } |
996 | 990 |
997 Node* RepresentationChanger::InsertChangeTaggedToFloat64(Node* node) { | 991 Node* RepresentationChanger::InsertChangeTaggedToFloat64(Node* node) { |
998 return jsgraph()->graph()->NewNode(simplified()->ChangeTaggedToFloat64(), | 992 return jsgraph()->graph()->NewNode(simplified()->ChangeTaggedToFloat64(), |
999 node); | 993 node); |
1000 } | 994 } |
1001 | 995 |
1002 } // namespace compiler | 996 } // namespace compiler |
1003 } // namespace internal | 997 } // namespace internal |
1004 } // namespace v8 | 998 } // namespace v8 |
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