Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/type-cache.h b/src/type-cache.h
new file mode 100644
index 0000000..1b3a260
--- /dev/null
+++ b/src/type-cache.h
@@ -0,0 +1,154 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_TYPE_CACHE_H_
+#define V8_TYPE_CACHE_H_
+
+#include "src/types.h"
+
+namespace v8 {
+namespace internal {
+
+class TypeCache final {
+ private:
+ // This has to be first for the initialization magic to work.
+ Zone zone_;
+
+ public:
+ static TypeCache const& Get();
+
+ TypeCache() = default;
+
+ Type* const kInt8 =
+ CreateNative(CreateRange<int8_t>(), Type::UntaggedIntegral8());
+ Type* const kUint8 =
+ CreateNative(CreateRange<uint8_t>(), Type::UntaggedIntegral8());
+ Type* const kUint8Clamped = kUint8;
+ Type* const kInt16 =
+ CreateNative(CreateRange<int16_t>(), Type::UntaggedIntegral16());
+ Type* const kUint16 =
+ CreateNative(CreateRange<uint16_t>(), Type::UntaggedIntegral16());
+ Type* const kInt32 =
+ CreateNative(Type::Signed32(), Type::UntaggedIntegral32());
+ Type* const kUint32 =
+ CreateNative(Type::Unsigned32(), Type::UntaggedIntegral32());
+ Type* const kFloat32 = CreateNative(Type::Number(), Type::UntaggedFloat32());
+ Type* const kFloat64 = CreateNative(Type::Number(), Type::UntaggedFloat64());
+
+ Type* const kSmi = CreateNative(Type::SignedSmall(), Type::TaggedSigned());
+ Type* const kHeapNumber = CreateNative(Type::Number(), Type::TaggedPointer());
+
+ Type* const kSingletonZero = CreateRange(0.0, 0.0);
+ Type* const kSingletonOne = CreateRange(1.0, 1.0);
+ Type* const kZeroOrOne = CreateRange(0.0, 1.0);
+ Type* const kZeroToThirtyOne = CreateRange(0.0, 31.0);
+ Type* const kZeroToThirtyTwo = CreateRange(0.0, 32.0);
+ Type* const kZeroish =
+ Type::Union(kSingletonZero, Type::MinusZeroOrNaN(), zone());
+ Type* const kInteger = CreateRange(-V8_INFINITY, V8_INFINITY);
+ Type* const kPositiveInteger = CreateRange(0.0, V8_INFINITY);
+ Type* const kIntegerOrMinusZero =
+ Type::Union(kInteger, Type::MinusZero(), zone());
+ Type* const kIntegerOrMinusZeroOrNaN =
+ Type::Union(kIntegerOrMinusZero, Type::NaN(), zone());
+
+ Type* const kAdditiveSafeInteger =
+ CreateRange(-4503599627370496.0, 4503599627370496.0);
+ Type* const kSafeInteger = CreateRange(-kMaxSafeInteger, kMaxSafeInteger);
+ Type* const kPositiveSafeInteger = CreateRange(0.0, kMaxSafeInteger);
+
+ Type* const kUntaggedUndefined =
+ Type::Intersect(Type::Undefined(), Type::Untagged(), zone());
+
+ // Asm.js related types.
+ Type* const kAsmSigned = kInt32;
+ Type* const kAsmUnsigned = kUint32;
+ Type* const kAsmInt = Type::Union(kAsmSigned, kAsmUnsigned, zone());
+ Type* const kAsmFixnum = Type::Intersect(kAsmSigned, kAsmUnsigned, zone());
+ Type* const kAsmFloat = kFloat32;
+ Type* const kAsmDouble = kFloat64;
+ Type* const kAsmFloatQ = Type::Union(kAsmFloat, kUntaggedUndefined, zone());
+ Type* const kAsmDoubleQ = Type::Union(kAsmDouble, kUntaggedUndefined, zone());
+ // Not part of the Asm.js type hierarchy, but represents a part of what
+ // intish encompasses.
+ Type* const kAsmIntQ = Type::Union(kAsmInt, kUntaggedUndefined, zone());
+ Type* const kAsmFloatDoubleQ = Type::Union(kAsmFloatQ, kAsmDoubleQ, zone());
+ // Asm.js size unions.
+ Type* const kAsmSize8 = Type::Union(kInt8, kUint8, zone());
+ Type* const kAsmSize16 = Type::Union(kInt16, kUint16, zone());
+ Type* const kAsmSize32 =
+ Type::Union(Type::Union(kInt32, kUint32, zone()), kAsmFloat, zone());
+ Type* const kAsmSize64 = kFloat64;
+ // Asm.js other types.
+ Type* const kAsmComparable = Type::Union(
+ kAsmSigned,
+ Type::Union(kAsmUnsigned, Type::Union(kAsmDouble, kAsmFloat, zone()),
+ zone()),
+ zone());
+ Type* const kAsmIntArrayElement =
+ Type::Union(Type::Union(kInt8, kUint8, zone()),
+ Type::Union(Type::Union(kInt16, kUint16, zone()),
+ Type::Union(kInt32, kUint32, zone()), zone()),
+ zone());
+
+ // The FixedArray::length property always containts a smi in the range
+ // [0, FixedArray::kMaxLength].
+ Type* const kFixedArrayLengthType = CreateNative(
+ CreateRange(0.0, FixedArray::kMaxLength), Type::TaggedSigned());
+
+ // The FixedDoubleArray::length property always containts a smi in the range
+ // [0, FixedDoubleArray::kMaxLength].
+ Type* const kFixedDoubleArrayLengthType = CreateNative(
+ CreateRange(0.0, FixedDoubleArray::kMaxLength), Type::TaggedSigned());
+
+ // The JSArray::length property always contains a tagged number in the range
+ // [0, kMaxUInt32].
+ Type* const kJSArrayLengthType =
+ CreateNative(Type::Unsigned32(), Type::Tagged());
+
+ // The String::length property always contains a smi in the range
+ // [0, String::kMaxLength].
+ Type* const kStringLengthType =
+ CreateNative(CreateRange(0.0, String::kMaxLength), Type::TaggedSigned());
+
+ // When initializing arrays, we'll unfold the loop if the number of
+ // elements is known to be of this type.
+ Type* const kElementLoopUnrollType = CreateRange(0.0, 16.0);
+
+#define TYPED_ARRAY(TypeName, type_name, TYPE_NAME, ctype, size) \
+ Type* const k##TypeName##Array = CreateArray(k##TypeName);
+ TYPED_ARRAYS(TYPED_ARRAY)
+#undef TYPED_ARRAY
+
+ private:
+ Type* CreateArray(Type* element) { return Type::Array(element, zone()); }
+
+ Type* CreateArrayFunction(Type* array) {
+ Type* arg1 = Type::Union(Type::Unsigned32(), Type::Object(), zone());
+ Type* arg2 = Type::Union(Type::Unsigned32(), Type::Undefined(), zone());
+ Type* arg3 = arg2;
+ return Type::Function(array, arg1, arg2, arg3, zone());
+ }
+
+ Type* CreateNative(Type* semantic, Type* representation) {
+ return Type::Intersect(semantic, representation, zone());
+ }
+
+ template <typename T>
+ Type* CreateRange() {
+ return CreateRange(std::numeric_limits<T>::min(),
+ std::numeric_limits<T>::max());
+ }
+
+ Type* CreateRange(double min, double max) {
+ return Type::Range(min, max, zone());
+ }
+
+ Zone* zone() { return &zone_; }
+};
+
+} // namespace internal
+} // namespace v8
+
+#endif // V8_TYPE_CACHE_H_