diff options
Diffstat (limited to 'js/src/jit/MIR.h')
| -rw-r--r-- | js/src/jit/MIR.h | 192 |
1 files changed, 22 insertions, 170 deletions
diff --git a/js/src/jit/MIR.h b/js/src/jit/MIR.h index 3e0421789..4bedfb268 100644 --- a/js/src/jit/MIR.h +++ b/js/src/jit/MIR.h @@ -375,8 +375,7 @@ class AliasSet { Element = 1 << 1, // A Value member of obj->elements or // a typed object. UnboxedElement = 1 << 2, // An unboxed scalar or reference member of - // a typed array, typed object, or unboxed - // object. + // typed object or unboxed object. DynamicSlot = 1 << 3, // A Value member of obj->slots. FixedSlot = 1 << 4, // A Value member of obj->fixedSlots(). DOMProperty = 1 << 5, // A DOM property @@ -433,9 +432,6 @@ class AliasSet { MOZ_ASSERT(flags && !(flags & Store_)); return AliasSet(flags | Store_); } - static uint32_t BoxedOrUnboxedElements(JSValueType type) { - return (type == JSVAL_TYPE_MAGIC) ? Element : UnboxedElement; - } }; typedef Vector<MDefinition*, 6, JitAllocPolicy> MDefinitionVector; @@ -8745,102 +8741,6 @@ class MSetInitializedLength ALLOW_CLONE(MSetInitializedLength) }; -// Load the length from an unboxed array. -class MUnboxedArrayLength - : public MUnaryInstruction, - public SingleObjectPolicy::Data -{ - explicit MUnboxedArrayLength(MDefinition* object) - : MUnaryInstruction(object) - { - setResultType(MIRType::Int32); - setMovable(); - } - - public: - INSTRUCTION_HEADER(UnboxedArrayLength) - TRIVIAL_NEW_WRAPPERS - NAMED_OPERANDS((0, object)) - - bool congruentTo(const MDefinition* ins) const override { - return congruentIfOperandsEqual(ins); - } - AliasSet getAliasSet() const override { - return AliasSet::Load(AliasSet::ObjectFields); - } - - ALLOW_CLONE(MUnboxedArrayLength) -}; - -// Load the initialized length from an unboxed array. -class MUnboxedArrayInitializedLength - : public MUnaryInstruction, - public SingleObjectPolicy::Data -{ - explicit MUnboxedArrayInitializedLength(MDefinition* object) - : MUnaryInstruction(object) - { - setResultType(MIRType::Int32); - setMovable(); - } - - public: - INSTRUCTION_HEADER(UnboxedArrayInitializedLength) - TRIVIAL_NEW_WRAPPERS - NAMED_OPERANDS((0, object)) - - bool congruentTo(const MDefinition* ins) const override { - return congruentIfOperandsEqual(ins); - } - AliasSet getAliasSet() const override { - return AliasSet::Load(AliasSet::ObjectFields); - } - - ALLOW_CLONE(MUnboxedArrayInitializedLength) -}; - -// Increment the initialized length of an unboxed array object. -class MIncrementUnboxedArrayInitializedLength - : public MUnaryInstruction, - public SingleObjectPolicy::Data -{ - explicit MIncrementUnboxedArrayInitializedLength(MDefinition* obj) - : MUnaryInstruction(obj) - {} - - public: - INSTRUCTION_HEADER(IncrementUnboxedArrayInitializedLength) - TRIVIAL_NEW_WRAPPERS - NAMED_OPERANDS((0, object)) - - AliasSet getAliasSet() const override { - return AliasSet::Store(AliasSet::ObjectFields); - } - - ALLOW_CLONE(MIncrementUnboxedArrayInitializedLength) -}; - -// Set the initialized length of an unboxed array object. -class MSetUnboxedArrayInitializedLength - : public MBinaryInstruction, - public SingleObjectPolicy::Data -{ - explicit MSetUnboxedArrayInitializedLength(MDefinition* obj, MDefinition* length) - : MBinaryInstruction(obj, length) - {} - - public: - INSTRUCTION_HEADER(SetUnboxedArrayInitializedLength) - TRIVIAL_NEW_WRAPPERS - NAMED_OPERANDS((0, object), (1, length)) - - AliasSet getAliasSet() const override { - return AliasSet::Store(AliasSet::ObjectFields); - } - - ALLOW_CLONE(MSetUnboxedArrayInitializedLength) -}; - // Load the array length from an elements header. class MArrayLength : public MUnaryInstruction, @@ -9334,23 +9234,19 @@ class MLoadElement ALLOW_CLONE(MLoadElement) }; -// Load a value from the elements vector for a dense native or unboxed array. +// Load a value from the elements vector of a native object. // If the index is out-of-bounds, or the indexed slot has a hole, undefined is // returned instead. class MLoadElementHole : public MTernaryInstruction, public SingleObjectPolicy::Data { - // Unboxed element type, JSVAL_TYPE_MAGIC for dense native elements. - JSValueType unboxedType_; - bool needsNegativeIntCheck_; bool needsHoleCheck_; MLoadElementHole(MDefinition* elements, MDefinition* index, MDefinition* initLength, - JSValueType unboxedType, bool needsHoleCheck) + bool needsHoleCheck) : MTernaryInstruction(elements, index, initLength), - unboxedType_(unboxedType), needsNegativeIntCheck_(true), needsHoleCheck_(needsHoleCheck) { @@ -9372,9 +9268,6 @@ class MLoadElementHole TRIVIAL_NEW_WRAPPERS NAMED_OPERANDS((0, elements), (1, index), (2, initLength)) - JSValueType unboxedType() const { - return unboxedType_; - } bool needsNegativeIntCheck() const { return needsNegativeIntCheck_; } @@ -9385,8 +9278,6 @@ class MLoadElementHole if (!ins->isLoadElementHole()) return false; const MLoadElementHole* other = ins->toLoadElementHole(); - if (unboxedType() != other->unboxedType()) - return false; if (needsHoleCheck() != other->needsHoleCheck()) return false; if (needsNegativeIntCheck() != other->needsNegativeIntCheck()) @@ -9394,7 +9285,7 @@ class MLoadElementHole return congruentIfOperandsEqual(other); } AliasSet getAliasSet() const override { - return AliasSet::Load(AliasSet::BoxedOrUnboxedElements(unboxedType())); + return AliasSet::Load(AliasSet::Element); } void collectRangeInfoPreTrunc() override; @@ -9574,20 +9465,17 @@ class MStoreElement ALLOW_CLONE(MStoreElement) }; -// Like MStoreElement, but supports indexes >= initialized length, and can -// handle unboxed arrays. The downside is that we cannot hoist the elements -// vector and bounds check, since this instruction may update the (initialized) -// length and reallocate the elements vector. +// Like MStoreElement, but supports indexes >= initialized length. The downside +// is that we cannot hoist the elements vector and bounds check, since this +// instruction may update the (initialized) length and reallocate the elements +// vector. class MStoreElementHole : public MAryInstruction<4>, public MStoreElementCommon, public MixPolicy<SingleObjectPolicy, NoFloatPolicy<3> >::Data { - JSValueType unboxedType_; - MStoreElementHole(MDefinition* object, MDefinition* elements, - MDefinition* index, MDefinition* value, JSValueType unboxedType) - : unboxedType_(unboxedType) + MDefinition* index, MDefinition* value) { initOperand(0, object); initOperand(1, elements); @@ -9602,14 +9490,10 @@ class MStoreElementHole TRIVIAL_NEW_WRAPPERS NAMED_OPERANDS((0, object), (1, elements), (2, index), (3, value)) - JSValueType unboxedType() const { - return unboxedType_; - } AliasSet getAliasSet() const override { // StoreElementHole can update the initialized length, the array length // or reallocate obj->elements. - return AliasSet::Store(AliasSet::ObjectFields | - AliasSet::BoxedOrUnboxedElements(unboxedType())); + return AliasSet::Store(AliasSet::ObjectFields | AliasSet::Element); } ALLOW_CLONE(MStoreElementHole) @@ -9622,13 +9506,11 @@ class MFallibleStoreElement public MStoreElementCommon, public MixPolicy<SingleObjectPolicy, NoFloatPolicy<3> >::Data { - JSValueType unboxedType_; bool strict_; MFallibleStoreElement(MDefinition* object, MDefinition* elements, MDefinition* index, MDefinition* value, - JSValueType unboxedType, bool strict) - : unboxedType_(unboxedType) + bool strict) { initOperand(0, object); initOperand(1, elements); @@ -9644,12 +9526,8 @@ class MFallibleStoreElement TRIVIAL_NEW_WRAPPERS NAMED_OPERANDS((0, object), (1, elements), (2, index), (3, value)) - JSValueType unboxedType() const { - return unboxedType_; - } AliasSet getAliasSet() const override { - return AliasSet::Store(AliasSet::ObjectFields | - AliasSet::BoxedOrUnboxedElements(unboxedType())); + return AliasSet::Store(AliasSet::ObjectFields | AliasSet::Element); } bool strict() const { return strict_; @@ -9754,13 +9632,12 @@ class MArrayPopShift private: Mode mode_; - JSValueType unboxedType_; bool needsHoleCheck_; bool maybeUndefined_; - MArrayPopShift(MDefinition* object, Mode mode, JSValueType unboxedType, + MArrayPopShift(MDefinition* object, Mode mode, bool needsHoleCheck, bool maybeUndefined) - : MUnaryInstruction(object), mode_(mode), unboxedType_(unboxedType), + : MUnaryInstruction(object), mode_(mode), needsHoleCheck_(needsHoleCheck), maybeUndefined_(maybeUndefined) { } @@ -9778,12 +9655,8 @@ class MArrayPopShift bool mode() const { return mode_; } - JSValueType unboxedType() const { - return unboxedType_; - } AliasSet getAliasSet() const override { - return AliasSet::Store(AliasSet::ObjectFields | - AliasSet::BoxedOrUnboxedElements(unboxedType())); + return AliasSet::Store(AliasSet::ObjectFields | AliasSet::Element); } ALLOW_CLONE(MArrayPopShift) @@ -9794,10 +9667,8 @@ class MArrayPush : public MBinaryInstruction, public MixPolicy<SingleObjectPolicy, NoFloatPolicy<1> >::Data { - JSValueType unboxedType_; - - MArrayPush(MDefinition* object, MDefinition* value, JSValueType unboxedType) - : MBinaryInstruction(object, value), unboxedType_(unboxedType) + MArrayPush(MDefinition* object, MDefinition* value) + : MBinaryInstruction(object, value) { setResultType(MIRType::Int32); } @@ -9807,12 +9678,8 @@ class MArrayPush TRIVIAL_NEW_WRAPPERS NAMED_OPERANDS((0, object), (1, value)) - JSValueType unboxedType() const { - return unboxedType_; - } AliasSet getAliasSet() const override { - return AliasSet::Store(AliasSet::ObjectFields | - AliasSet::BoxedOrUnboxedElements(unboxedType())); + return AliasSet::Store(AliasSet::ObjectFields | AliasSet::Element); } void computeRange(TempAllocator& alloc) override; @@ -9826,15 +9693,13 @@ class MArraySlice { CompilerObject templateObj_; gc::InitialHeap initialHeap_; - JSValueType unboxedType_; MArraySlice(CompilerConstraintList* constraints, MDefinition* obj, MDefinition* begin, MDefinition* end, - JSObject* templateObj, gc::InitialHeap initialHeap, JSValueType unboxedType) + JSObject* templateObj, gc::InitialHeap initialHeap) : MTernaryInstruction(obj, begin, end), templateObj_(templateObj), - initialHeap_(initialHeap), - unboxedType_(unboxedType) + initialHeap_(initialHeap) { setResultType(MIRType::Object); } @@ -9852,10 +9717,6 @@ class MArraySlice return initialHeap_; } - JSValueType unboxedType() const { - return unboxedType_; - } - bool possiblyCalls() const override { return true; } @@ -12224,15 +12085,13 @@ class MInArray { bool needsHoleCheck_; bool needsNegativeIntCheck_; - JSValueType unboxedType_; MInArray(MDefinition* elements, MDefinition* index, MDefinition* initLength, MDefinition* object, - bool needsHoleCheck, JSValueType unboxedType) + bool needsHoleCheck) : MQuaternaryInstruction(elements, index, initLength, object), needsHoleCheck_(needsHoleCheck), - needsNegativeIntCheck_(true), - unboxedType_(unboxedType) + needsNegativeIntCheck_(true) { setResultType(MIRType::Boolean); setMovable(); @@ -12252,9 +12111,6 @@ class MInArray bool needsNegativeIntCheck() const { return needsNegativeIntCheck_; } - JSValueType unboxedType() const { - return unboxedType_; - } void collectRangeInfoPreTrunc() override; AliasSet getAliasSet() const override { return AliasSet::Load(AliasSet::Element); @@ -12267,8 +12123,6 @@ class MInArray return false; if (needsNegativeIntCheck() != other->needsNegativeIntCheck()) return false; - if (unboxedType() != other->unboxedType()) - return false; return congruentIfOperandsEqual(other); } }; @@ -14169,8 +14023,6 @@ MDefinition::maybeConstantValue() bool ElementAccessIsDenseNative(CompilerConstraintList* constraints, MDefinition* obj, MDefinition* id); -JSValueType UnboxedArrayElementType(CompilerConstraintList* constraints, MDefinition* obj, - MDefinition* id); bool ElementAccessIsTypedArray(CompilerConstraintList* constraints, MDefinition* obj, MDefinition* id, Scalar::Type* arrayType); |