1 // Copyright 2016 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_OPERATION_TYPER_H_ 6 #define V8_COMPILER_OPERATION_TYPER_H_ 7 8 #include "src/base/flags.h" 9 #include "src/compiler/opcodes.h" 10 #include "src/compiler/types.h" 11 #include "src/objects.h" 12 13 namespace v8 { 14 namespace internal { 15 16 // Forward declarations. 17 class Isolate; 18 class RangeType; 19 class Zone; 20 21 namespace compiler { 22 23 // Forward declarations. 24 class Operator; 25 class Type; 26 class TypeCache; 27 28 class V8_EXPORT_PRIVATE OperationTyper { 29 public: 30 OperationTyper(Isolate* isolate, JSHeapBroker* js_heap_broker, Zone* zone); 31 32 // Typing Phi. 33 Type Merge(Type left, Type right); 34 35 Type ToPrimitive(Type type); 36 Type ToNumber(Type type); 37 Type ToNumberConvertBigInt(Type type); 38 Type ToNumeric(Type type); 39 Type ToBoolean(Type type); 40 41 Type WeakenRange(Type current_range, Type previous_range); 42 43 // Unary operators. 44 #define DECLARE_METHOD(Name) Type Name(Type type); 45 SIMPLIFIED_NUMBER_UNOP_LIST(DECLARE_METHOD) 46 SIMPLIFIED_SPECULATIVE_NUMBER_UNOP_LIST(DECLARE_METHOD) 47 DECLARE_METHOD(ConvertReceiver) 48 #undef DECLARE_METHOD 49 50 // Number binary operators. 51 #define DECLARE_METHOD(Name) Type Name(Type lhs, Type rhs); 52 SIMPLIFIED_NUMBER_BINOP_LIST(DECLARE_METHOD) 53 SIMPLIFIED_SPECULATIVE_NUMBER_BINOP_LIST(DECLARE_METHOD) 54 #undef DECLARE_METHOD 55 56 // Comparison operators. 57 Type SameValue(Type lhs, Type rhs); 58 Type StrictEqual(Type lhs, Type rhs); 59 60 // Check operators. 61 Type CheckFloat64Hole(Type type); 62 Type CheckNumber(Type type); 63 Type ConvertTaggedHoleToUndefined(Type type); 64 65 Type TypeTypeGuard(const Operator* sigma_op, Type input); 66 67 enum ComparisonOutcomeFlags { 68 kComparisonTrue = 1, 69 kComparisonFalse = 2, 70 kComparisonUndefined = 4 71 }; 72 73 Type singleton_false() const { return singleton_false_; } 74 Type singleton_true() const { return singleton_true_; } 75 Type singleton_the_hole() const { return singleton_the_hole_; } 76 77 private: 78 typedef base::Flags<ComparisonOutcomeFlags> ComparisonOutcome; 79 80 Type ToNumberOrNumeric(Object::Conversion mode, Type type); 81 base::Optional<Type> ToNumberCommon(Type type); 82 83 ComparisonOutcome Invert(ComparisonOutcome); 84 Type Invert(Type); 85 Type FalsifyUndefined(ComparisonOutcome); 86 87 Type Rangify(Type); 88 Type AddRanger(double lhs_min, double lhs_max, double rhs_min, 89 double rhs_max); 90 Type SubtractRanger(double lhs_min, double lhs_max, double rhs_min, 91 double rhs_max); 92 Type MultiplyRanger(Type lhs, Type rhs); 93 94 Zone* zone() const { return zone_; } 95 96 Zone* const zone_; 97 TypeCache const& cache_; 98 99 Type infinity_; 100 Type minus_infinity_; 101 Type singleton_NaN_string_; 102 Type singleton_zero_string_; 103 Type singleton_false_; 104 Type singleton_true_; 105 Type singleton_the_hole_; 106 Type signed32ish_; 107 Type unsigned32ish_; 108 Type singleton_empty_string_; 109 Type truish_; 110 Type falsish_; 111 }; 112 113 } // namespace compiler 114 } // namespace internal 115 } // namespace v8 116 117 #endif // V8_COMPILER_OPERATION_TYPER_H_ 118
