Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_COMPILER_COMMON_OPERATOR_H_ |
| 6 | #define V8_COMPILER_COMMON_OPERATOR_H_ |
| 7 | |
| 8 | #include "src/compiler/machine-type.h" |
| 9 | #include "src/unique.h" |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | |
| 14 | // Forward declarations. |
| 15 | class ExternalReference; |
| 16 | class OStream; |
| 17 | |
| 18 | |
| 19 | namespace compiler { |
| 20 | |
| 21 | // Forward declarations. |
| 22 | class CallDescriptor; |
| 23 | struct CommonOperatorBuilderImpl; |
| 24 | class Operator; |
| 25 | |
| 26 | |
| 27 | // Flag that describes how to combine the current environment with |
| 28 | // the output of a node to obtain a framestate for lazy bailout. |
| 29 | enum OutputFrameStateCombine { |
| 30 | kPushOutput, // Push the output on the expression stack. |
| 31 | kIgnoreOutput // Use the frame state as-is. |
| 32 | }; |
| 33 | |
| 34 | |
| 35 | // The type of stack frame that a FrameState node represents. |
| 36 | enum FrameStateType { |
| 37 | JS_FRAME, // Represents an unoptimized JavaScriptFrame. |
| 38 | ARGUMENTS_ADAPTOR // Represents an ArgumentsAdaptorFrame. |
| 39 | }; |
| 40 | |
| 41 | |
| 42 | class FrameStateCallInfo FINAL { |
| 43 | public: |
| 44 | FrameStateCallInfo( |
| 45 | FrameStateType type, BailoutId bailout_id, |
| 46 | OutputFrameStateCombine state_combine, |
| 47 | MaybeHandle<JSFunction> jsfunction = MaybeHandle<JSFunction>()) |
| 48 | : type_(type), |
| 49 | bailout_id_(bailout_id), |
| 50 | frame_state_combine_(state_combine), |
| 51 | jsfunction_(jsfunction) {} |
| 52 | |
| 53 | FrameStateType type() const { return type_; } |
| 54 | BailoutId bailout_id() const { return bailout_id_; } |
| 55 | OutputFrameStateCombine state_combine() const { return frame_state_combine_; } |
| 56 | MaybeHandle<JSFunction> jsfunction() const { return jsfunction_; } |
| 57 | |
| 58 | private: |
| 59 | FrameStateType type_; |
| 60 | BailoutId bailout_id_; |
| 61 | OutputFrameStateCombine frame_state_combine_; |
| 62 | MaybeHandle<JSFunction> jsfunction_; |
| 63 | }; |
| 64 | |
| 65 | |
| 66 | // Interface for building common operators that can be used at any level of IR, |
| 67 | // including JavaScript, mid-level, and low-level. |
| 68 | class CommonOperatorBuilder FINAL { |
| 69 | public: |
| 70 | explicit CommonOperatorBuilder(Zone* zone); |
| 71 | |
| 72 | const Operator* Dead(); |
| 73 | const Operator* End(); |
| 74 | const Operator* Branch(); |
| 75 | const Operator* IfTrue(); |
| 76 | const Operator* IfFalse(); |
| 77 | const Operator* Throw(); |
| 78 | const Operator* Return(); |
| 79 | |
| 80 | const Operator* Start(int num_formal_parameters); |
| 81 | const Operator* Merge(int controls); |
| 82 | const Operator* Loop(int controls); |
| 83 | const Operator* Parameter(int index); |
| 84 | |
| 85 | const Operator* Int32Constant(int32_t); |
| 86 | const Operator* Int64Constant(int64_t); |
| 87 | const Operator* Float32Constant(volatile float); |
| 88 | const Operator* Float64Constant(volatile double); |
| 89 | const Operator* ExternalConstant(const ExternalReference&); |
| 90 | const Operator* NumberConstant(volatile double); |
| 91 | const Operator* HeapConstant(const Unique<Object>&); |
| 92 | |
| 93 | const Operator* Phi(MachineType type, int arguments); |
| 94 | const Operator* EffectPhi(int arguments); |
| 95 | const Operator* ControlEffect(); |
| 96 | const Operator* ValueEffect(int arguments); |
| 97 | const Operator* Finish(int arguments); |
| 98 | const Operator* StateValues(int arguments); |
| 99 | const Operator* FrameState( |
| 100 | FrameStateType type, BailoutId bailout_id, |
| 101 | OutputFrameStateCombine state_combine, |
| 102 | MaybeHandle<JSFunction> jsfunction = MaybeHandle<JSFunction>()); |
| 103 | const Operator* Call(const CallDescriptor* descriptor); |
| 104 | const Operator* Projection(size_t index); |
| 105 | |
| 106 | private: |
| 107 | Zone* zone() const { return zone_; } |
| 108 | |
| 109 | const CommonOperatorBuilderImpl& impl_; |
| 110 | Zone* const zone_; |
| 111 | }; |
| 112 | |
| 113 | } // namespace compiler |
| 114 | } // namespace internal |
| 115 | } // namespace v8 |
| 116 | |
| 117 | #endif // V8_COMPILER_COMMON_OPERATOR_H_ |