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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef V8_COMPILER_MACHINE_OPERATOR_H_ | 5 #ifndef V8_COMPILER_MACHINE_OPERATOR_H_ |
6 #define V8_COMPILER_MACHINE_OPERATOR_H_ | 6 #define V8_COMPILER_MACHINE_OPERATOR_H_ |
7 | 7 |
8 #include "src/base/compiler-specific.h" | 8 #include "src/base/compiler-specific.h" |
9 #include "src/base/flags.h" | 9 #include "src/base/flags.h" |
10 #include "src/globals.h" | 10 #include "src/globals.h" |
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92 typedef MachineRepresentation CheckedStoreRepresentation; | 92 typedef MachineRepresentation CheckedStoreRepresentation; |
93 | 93 |
94 CheckedStoreRepresentation CheckedStoreRepresentationOf(Operator const*); | 94 CheckedStoreRepresentation CheckedStoreRepresentationOf(Operator const*); |
95 | 95 |
96 int StackSlotSizeOf(Operator const* op); | 96 int StackSlotSizeOf(Operator const* op); |
97 | 97 |
98 MachineRepresentation AtomicStoreRepresentationOf(Operator const* op); | 98 MachineRepresentation AtomicStoreRepresentationOf(Operator const* op); |
99 | 99 |
100 MachineType AtomicExchangeRepresentationOf(Operator const* op); | 100 MachineType AtomicExchangeRepresentationOf(Operator const* op); |
101 | 101 |
| 102 MachineType AtomicCompareExchangeRepresentationOf(Operator const* op); |
| 103 |
102 // Interface for building machine-level operators. These operators are | 104 // Interface for building machine-level operators. These operators are |
103 // machine-level but machine-independent and thus define a language suitable | 105 // machine-level but machine-independent and thus define a language suitable |
104 // for generating code to run on architectures such as ia32, x64, arm, etc. | 106 // for generating code to run on architectures such as ia32, x64, arm, etc. |
105 class V8_EXPORT_PRIVATE MachineOperatorBuilder final | 107 class V8_EXPORT_PRIVATE MachineOperatorBuilder final |
106 : public NON_EXPORTED_BASE(ZoneObject) { | 108 : public NON_EXPORTED_BASE(ZoneObject) { |
107 public: | 109 public: |
108 // Flags that specify which operations are available. This is useful | 110 // Flags that specify which operations are available. This is useful |
109 // for operations that are unsupported by some back-ends. | 111 // for operations that are unsupported by some back-ends. |
110 enum Flag : unsigned { | 112 enum Flag : unsigned { |
111 kNoFlags = 0u, | 113 kNoFlags = 0u, |
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616 const Operator* CheckedLoad(CheckedLoadRepresentation); | 618 const Operator* CheckedLoad(CheckedLoadRepresentation); |
617 // checked-store heap, index, length, value | 619 // checked-store heap, index, length, value |
618 const Operator* CheckedStore(CheckedStoreRepresentation); | 620 const Operator* CheckedStore(CheckedStoreRepresentation); |
619 | 621 |
620 // atomic-load [base + index] | 622 // atomic-load [base + index] |
621 const Operator* AtomicLoad(LoadRepresentation rep); | 623 const Operator* AtomicLoad(LoadRepresentation rep); |
622 // atomic-store [base + index], value | 624 // atomic-store [base + index], value |
623 const Operator* AtomicStore(MachineRepresentation rep); | 625 const Operator* AtomicStore(MachineRepresentation rep); |
624 // atomic-exchange [base + index], value | 626 // atomic-exchange [base + index], value |
625 const Operator* AtomicExchange(MachineType rep); | 627 const Operator* AtomicExchange(MachineType rep); |
| 628 // atomic-compare-exchange [base + index], old_value, new_value |
| 629 const Operator* AtomicCompareExchange(MachineType rep); |
626 | 630 |
627 // Target machine word-size assumed by this builder. | 631 // Target machine word-size assumed by this builder. |
628 bool Is32() const { return word() == MachineRepresentation::kWord32; } | 632 bool Is32() const { return word() == MachineRepresentation::kWord32; } |
629 bool Is64() const { return word() == MachineRepresentation::kWord64; } | 633 bool Is64() const { return word() == MachineRepresentation::kWord64; } |
630 MachineRepresentation word() const { return word_; } | 634 MachineRepresentation word() const { return word_; } |
631 | 635 |
632 bool UnalignedLoadSupported(const MachineType& machineType, | 636 bool UnalignedLoadSupported(const MachineType& machineType, |
633 uint8_t alignment) { | 637 uint8_t alignment) { |
634 return alignment_requirements_.IsUnalignedLoadSupported(machineType, | 638 return alignment_requirements_.IsUnalignedLoadSupported(machineType, |
635 alignment); | 639 alignment); |
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682 }; | 686 }; |
683 | 687 |
684 | 688 |
685 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags) | 689 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags) |
686 | 690 |
687 } // namespace compiler | 691 } // namespace compiler |
688 } // namespace internal | 692 } // namespace internal |
689 } // namespace v8 | 693 } // namespace v8 |
690 | 694 |
691 #endif // V8_COMPILER_MACHINE_OPERATOR_H_ | 695 #endif // V8_COMPILER_MACHINE_OPERATOR_H_ |
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