summaryrefslogtreecommitdiffstats
path: root/js/src/jit/MIR.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/jit/MIR.cpp')
-rw-r--r--js/src/jit/MIR.cpp161
1 files changed, 22 insertions, 139 deletions
diff --git a/js/src/jit/MIR.cpp b/js/src/jit/MIR.cpp
index 287b87582..1f33b2174 100644
--- a/js/src/jit/MIR.cpp
+++ b/js/src/jit/MIR.cpp
@@ -4810,35 +4810,8 @@ MBeta::printOpcode(GenericPrinter& out) const
bool
MCreateThisWithTemplate::canRecoverOnBailout() const
{
- MOZ_ASSERT(templateObject()->is<PlainObject>() || templateObject()->is<UnboxedPlainObject>());
- MOZ_ASSERT_IF(templateObject()->is<PlainObject>(),
- !templateObject()->as<PlainObject>().denseElementsAreCopyOnWrite());
- return true;
-}
-
-bool
-OperandIndexMap::init(TempAllocator& alloc, JSObject* templateObject)
-{
- const UnboxedLayout& layout =
- templateObject->as<UnboxedPlainObject>().layoutDontCheckGeneration();
-
- const UnboxedLayout::PropertyVector& properties = layout.properties();
- MOZ_ASSERT(properties.length() < 255);
-
- // Allocate an array of indexes, where the top of each field correspond to
- // the index of the operand in the MObjectState instance.
- if (!map.init(alloc, layout.size()))
- return false;
-
- // Reset all indexes to 0, which is an error code.
- for (size_t i = 0; i < map.length(); i++)
- map[i] = 0;
-
- // Map the property offsets to the indexes of MObjectState operands.
- uint8_t index = 1;
- for (size_t i = 0; i < properties.length(); i++, index++)
- map[properties[i].offset] = index;
-
+ MOZ_ASSERT(templateObject()->is<PlainObject>());
+ MOZ_ASSERT(!templateObject()->as<PlainObject>().denseElementsAreCopyOnWrite());
return true;
}
@@ -4858,17 +4831,11 @@ MObjectState::MObjectState(JSObject *templateObject, OperandIndexMap* operandInd
setResultType(MIRType::Object);
setRecoveredOnBailout();
- if (templateObject->is<NativeObject>()) {
- NativeObject* nativeObject = &templateObject->as<NativeObject>();
- numSlots_ = nativeObject->slotSpan();
- numFixedSlots_ = nativeObject->numFixedSlots();
- } else {
- const UnboxedLayout& layout =
- templateObject->as<UnboxedPlainObject>().layoutDontCheckGeneration();
- // Same as UnboxedLayout::makeNativeGroup
- numSlots_ = layout.properties().length();
- numFixedSlots_ = gc::GetGCKindSlots(layout.getAllocKind());
- }
+ MOZ_ASSERT(templateObject->is<NativeObject>());
+
+ NativeObject* nativeObject = &templateObject->as<NativeObject>();
+ numSlots_ = nativeObject->slotSpan();
+ numFixedSlots_ = nativeObject->numFixedSlots();
operandIndex_ = operandIndex;
}
@@ -4905,39 +4872,21 @@ MObjectState::initFromTemplateObject(TempAllocator& alloc, MDefinition* undefine
// the template object. This is needed to account values which are baked in
// the template objects and not visible in IonMonkey, such as the
// uninitialized-lexical magic value of call objects.
- if (templateObject->is<UnboxedPlainObject>()) {
- UnboxedPlainObject& unboxedObject = templateObject->as<UnboxedPlainObject>();
- const UnboxedLayout& layout = unboxedObject.layoutDontCheckGeneration();
- const UnboxedLayout::PropertyVector& properties = layout.properties();
-
- for (size_t i = 0; i < properties.length(); i++) {
- Value val = unboxedObject.getValue(properties[i], /* maybeUninitialized = */ true);
- MDefinition *def = undefinedVal;
- if (!val.isUndefined()) {
- MConstant* ins = val.isObject() ?
- MConstant::NewConstraintlessObject(alloc, &val.toObject()) :
- MConstant::New(alloc, val);
- block()->insertBefore(this, ins);
- def = ins;
- }
- initSlot(i, def);
- }
- } else {
- NativeObject& nativeObject = templateObject->as<NativeObject>();
- MOZ_ASSERT(nativeObject.slotSpan() == numSlots());
-
- for (size_t i = 0; i < numSlots(); i++) {
- Value val = nativeObject.getSlot(i);
- MDefinition *def = undefinedVal;
- if (!val.isUndefined()) {
- MConstant* ins = val.isObject() ?
- MConstant::NewConstraintlessObject(alloc, &val.toObject()) :
- MConstant::New(alloc, val);
- block()->insertBefore(this, ins);
- def = ins;
- }
- initSlot(i, def);
+ NativeObject& nativeObject = templateObject->as<NativeObject>();
+ MOZ_ASSERT(nativeObject.slotSpan() == numSlots());
+
+ MOZ_ASSERT(templateObject->is<NativeObject>());
+ for (size_t i = 0; i < numSlots(); i++) {
+ Value val = nativeObject.getSlot(i);
+ MDefinition *def = undefinedVal;
+ if (!val.isUndefined()) {
+ MConstant* ins = val.isObject() ?
+ MConstant::NewConstraintlessObject(alloc, &val.toObject()) :
+ MConstant::New(alloc, val);
+ block()->insertBefore(this, ins);
+ def = ins;
}
+ initSlot(i, def);
}
return true;
}
@@ -4948,14 +4897,7 @@ MObjectState::New(TempAllocator& alloc, MDefinition* obj)
JSObject* templateObject = templateObjectOf(obj);
MOZ_ASSERT(templateObject, "Unexpected object creation.");
- OperandIndexMap* operandIndex = nullptr;
- if (templateObject->is<UnboxedPlainObject>()) {
- operandIndex = new(alloc) OperandIndexMap;
- if (!operandIndex || !operandIndex->init(alloc, templateObject))
- return nullptr;
- }
-
- MObjectState* res = new(alloc) MObjectState(templateObject, operandIndex);
+ MObjectState* res = new(alloc) MObjectState(templateObject, nullptr);
if (!res || !res->init(alloc, obj))
return nullptr;
return res;
@@ -5862,35 +5804,6 @@ MGetFirstDollarIndex::foldsTo(TempAllocator& alloc)
return MConstant::New(alloc, Int32Value(index));
}
-MConvertUnboxedObjectToNative*
-MConvertUnboxedObjectToNative::New(TempAllocator& alloc, MDefinition* obj, ObjectGroup* group)
-{
- MConvertUnboxedObjectToNative* res = new(alloc) MConvertUnboxedObjectToNative(obj, group);
-
- ObjectGroup* nativeGroup = group->unboxedLayout().nativeGroup();
-
- // Make a new type set for the result of this instruction which replaces
- // the input group with the native group we will convert it to.
- TemporaryTypeSet* types = obj->resultTypeSet();
- if (types && !types->unknownObject()) {
- TemporaryTypeSet* newTypes = types->cloneWithoutObjects(alloc.lifoAlloc());
- if (newTypes) {
- for (size_t i = 0; i < types->getObjectCount(); i++) {
- TypeSet::ObjectKey* key = types->getObject(i);
- if (!key)
- continue;
- if (key->unknownProperties() || !key->isGroup() || key->group() != group)
- newTypes->addType(TypeSet::ObjectType(key), alloc.lifoAlloc());
- else
- newTypes->addType(TypeSet::ObjectType(nativeGroup), alloc.lifoAlloc());
- }
- res->setResultTypeSet(newTypes);
- }
- }
-
- return res;
-}
-
bool
jit::ElementAccessIsDenseNative(CompilerConstraintList* constraints,
MDefinition* obj, MDefinition* id)
@@ -5945,8 +5858,6 @@ jit::UnboxedArrayElementType(CompilerConstraintList* constraints, MDefinition* o
elementType = layout.elementType();
else
return JSVAL_TYPE_MAGIC;
-
- key->watchStateChangeForUnboxedConvertedToNative(constraints);
}
return elementType;
@@ -6579,23 +6490,6 @@ jit::PropertyWriteNeedsTypeBarrier(TempAllocator& alloc, CompilerConstraintList*
}
}
- // Perform additional filtering to make sure that any unboxed property
- // being written can accommodate the value.
- for (size_t i = 0; i < types->getObjectCount(); i++) {
- TypeSet::ObjectKey* key = types->getObject(i);
- if (key && key->isGroup() && key->group()->maybeUnboxedLayout()) {
- const UnboxedLayout& layout = key->group()->unboxedLayout();
- if (name) {
- const UnboxedLayout::Property* property = layout.lookup(name);
- if (property && !CanStoreUnboxedType(alloc, property->type, *pvalue))
- return true;
- } else {
- if (layout.isArray() && !CanStoreUnboxedType(alloc, layout.elementType(), *pvalue))
- return true;
- }
- }
- }
-
if (success)
return false;
@@ -6626,17 +6520,6 @@ jit::PropertyWriteNeedsTypeBarrier(TempAllocator& alloc, CompilerConstraintList*
MOZ_ASSERT(excluded);
- // If the excluded object is a group with an unboxed layout, make sure it
- // does not have a corresponding native group. Objects with the native
- // group might appear even though they are not in the type set.
- if (excluded->isGroup()) {
- if (UnboxedLayout* layout = excluded->group()->maybeUnboxedLayout()) {
- if (layout->nativeGroup())
- return true;
- excluded->watchStateChangeForUnboxedConvertedToNative(constraints);
- }
- }
-
*pobj = AddGroupGuard(alloc, current, *pobj, excluded, /* bailOnEquality = */ true);
return false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 21:00:30 +0000