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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/typer.h" | 5 #include "src/compiler/typer.h" |
6 | 6 |
7 #include "src/base/flags.h" | 7 #include "src/base/flags.h" |
8 #include "src/base/lazy-instance.h" | 8 #include "src/base/lazy-instance.h" |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/compiler/common-operator.h" | 10 #include "src/compiler/common-operator.h" |
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46 Zone* zone = this->zone(); | 46 Zone* zone = this->zone(); |
47 Factory* const factory = isolate->factory(); | 47 Factory* const factory = isolate->factory(); |
48 | 48 |
49 Type* infinity = Type::Constant(factory->infinity_value(), zone); | 49 Type* infinity = Type::Constant(factory->infinity_value(), zone); |
50 Type* minus_infinity = Type::Constant(factory->minus_infinity_value(), zone); | 50 Type* minus_infinity = Type::Constant(factory->minus_infinity_value(), zone); |
51 // TODO(neis): Unfortunately, the infinities created in other places might | 51 // TODO(neis): Unfortunately, the infinities created in other places might |
52 // be different ones (eg the result of NewNumber in TypeNumberConstant). | 52 // be different ones (eg the result of NewNumber in TypeNumberConstant). |
53 Type* truncating_to_zero = | 53 Type* truncating_to_zero = |
54 Type::Union(Type::Union(infinity, minus_infinity, zone), | 54 Type::Union(Type::Union(infinity, minus_infinity, zone), |
55 Type::MinusZeroOrNaN(), zone); | 55 Type::MinusZeroOrNaN(), zone); |
| 56 DCHECK(!truncating_to_zero->Maybe(Type::Integral32())); |
56 | 57 |
57 singleton_false_ = Type::Constant(factory->false_value(), zone); | 58 singleton_false_ = Type::Constant(factory->false_value(), zone); |
58 singleton_true_ = Type::Constant(factory->true_value(), zone); | 59 singleton_true_ = Type::Constant(factory->true_value(), zone); |
59 signed32ish_ = Type::Union(Type::Signed32(), truncating_to_zero, zone); | 60 signed32ish_ = Type::Union(Type::Signed32(), truncating_to_zero, zone); |
60 unsigned32ish_ = Type::Union(Type::Unsigned32(), truncating_to_zero, zone); | 61 unsigned32ish_ = Type::Union(Type::Unsigned32(), truncating_to_zero, zone); |
61 falsish_ = Type::Union( | 62 falsish_ = Type::Union( |
62 Type::Undetectable(), | 63 Type::Undetectable(), |
63 Type::Union(Type::Union(singleton_false_, cache_.kZeroish, zone), | 64 Type::Union(Type::Union(singleton_false_, cache_.kZeroish, zone), |
64 Type::NullOrUndefined(), zone), | 65 Type::NullOrUndefined(), zone), |
65 zone); | 66 zone); |
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2295 } | 2296 } |
2296 if (Type::IsInteger(*value)) { | 2297 if (Type::IsInteger(*value)) { |
2297 return Type::Range(value->Number(), value->Number(), zone()); | 2298 return Type::Range(value->Number(), value->Number(), zone()); |
2298 } | 2299 } |
2299 return Type::Constant(value, zone()); | 2300 return Type::Constant(value, zone()); |
2300 } | 2301 } |
2301 | 2302 |
2302 } // namespace compiler | 2303 } // namespace compiler |
2303 } // namespace internal | 2304 } // namespace internal |
2304 } // namespace v8 | 2305 } // namespace v8 |
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