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-rw-r--r--js/src/jit/BaselineIC.cpp23
-rw-r--r--js/src/jit/MIR.h10
-rw-r--r--js/src/jsarray.cpp32
-rw-r--r--js/src/jsarray.h2
-rw-r--r--js/src/vm/Interpreter.cpp5
-rw-r--r--js/src/vm/ObjectGroup.cpp34
-rw-r--r--js/src/vm/TypeInference.cpp4
-rw-r--r--js/src/vm/TypeInference.h4
8 files changed, 26 insertions, 88 deletions
diff --git a/js/src/jit/BaselineIC.cpp b/js/src/jit/BaselineIC.cpp
index 17fdb1807..9151d9634 100644
--- a/js/src/jit/BaselineIC.cpp
+++ b/js/src/jit/BaselineIC.cpp
@@ -5365,13 +5365,6 @@ GetTemplateObjectForSimd(JSContext* cx, JSFunction* target, MutableHandleObject
return true;
}
-static void
-EnsureArrayGroupAnalyzed(JSContext* cx, JSObject* obj)
-{
- if (PreliminaryObjectArrayWithTemplate* objects = obj->group()->maybePreliminaryObjects())
- objects->maybeAnalyze(cx, obj->group(), /* forceAnalyze = */ true);
-}
-
static bool
GetTemplateObjectForNative(JSContext* cx, HandleFunction target, const CallArgs& args,
MutableHandleObject res, bool* skipAttach)
@@ -5403,10 +5396,7 @@ GetTemplateObjectForNative(JSContext* cx, HandleFunction target, const CallArgs&
// With this and other array templates, analyze the group so that
// we don't end up with a template whose structure might change later.
res.set(NewFullyAllocatedArrayForCallingAllocationSite(cx, count, TenuredObject));
- if (!res)
- return false;
- EnsureArrayGroupAnalyzed(cx, res);
- return true;
+ return !!res;
}
}
@@ -5432,10 +5422,7 @@ GetTemplateObjectForNative(JSContext* cx, HandleFunction target, const CallArgs&
}
res.set(NewFullyAllocatedArrayTryReuseGroup(cx, &args.thisv().toObject(), 0,
TenuredObject));
- if (!res)
- return false;
- EnsureArrayGroupAnalyzed(cx, res);
- return true;
+ return !!res;
}
}
}
@@ -5452,10 +5439,7 @@ GetTemplateObjectForNative(JSContext* cx, HandleFunction target, const CallArgs&
}
res.set(NewFullyAllocatedArrayForCallingAllocationSite(cx, 0, TenuredObject));
- if (!res)
- return false;
- EnsureArrayGroupAnalyzed(cx, res);
- return true;
+ return !!res;
}
if (native == StringConstructor) {
@@ -5768,7 +5752,6 @@ CopyArray(JSContext* cx, HandleArrayObject arr, MutableHandleValue result)
ArrayObject* nobj = NewFullyAllocatedArrayTryReuseGroup(cx, arr, length, TenuredObject);
if (!nobj)
return false;
- EnsureArrayGroupAnalyzed(cx, nobj); //XXX
MOZ_ASSERT(arr->isNative());
MOZ_ASSERT(nobj->isNative());
diff --git a/js/src/jit/MIR.h b/js/src/jit/MIR.h
index f316827dc..4bedfb268 100644
--- a/js/src/jit/MIR.h
+++ b/js/src/jit/MIR.h
@@ -9234,7 +9234,7 @@ 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
@@ -9465,10 +9465,10 @@ 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,
diff --git a/js/src/jsarray.cpp b/js/src/jsarray.cpp
index b77a5bce8..6129b2b65 100644
--- a/js/src/jsarray.cpp
+++ b/js/src/jsarray.cpp
@@ -2261,9 +2261,6 @@ js::array_unshift(JSContext* cx, unsigned argc, Value* vp)
if (args.length() > 0) {
/* Slide up the array to make room for all args at the bottom. */
if (length > 0) {
- // Only include a fast path for boxed arrays. Unboxed arrays can'nt
- // be optimized here because unshifting temporarily places holes at
- // the start of the array.
bool optimized = false;
do {
if (!obj->is<ArrayObject>())
@@ -2323,10 +2320,10 @@ js::array_unshift(JSContext* cx, unsigned argc, Value* vp)
}
/*
- * Returns true if this is a dense or unboxed array whose |count| properties
- * starting from |startingIndex| may be accessed (get, set, delete) directly
- * through its contiguous vector of elements without fear of getters, setters,
- * etc. along the prototype chain, or of enumerators requiring notification of
+ * Returns true if this is a dense array whose properties ending at |endIndex|
+ * (exclusive) may be accessed (get, set, delete) directly through its
+ * contiguous vector of elements without fear of getters, setters, etc. along
+ * the prototype chain, or of enumerators requiring notification of
* modifications.
*/
static inline bool
@@ -3550,10 +3547,10 @@ js::NewDenseCopyOnWriteArray(JSContext* cx, HandleArrayObject templateObject, gc
return arr;
}
-// Return a new boxed or unboxed array with the specified length and allocated
-// capacity (up to maxLength), using the specified group if possible. If the
-// specified group cannot be used, ensure that the created array at least has
-// the given [[Prototype]].
+// Return a new array with the specified length and allocated capacity (up to
+// maxLength), using the specified group if possible. If the specified group
+// cannot be used, ensure that the created array at least has the given
+// [[Prototype]].
template <uint32_t maxLength>
static inline ArrayObject*
NewArrayTryUseGroup(ExclusiveContext* cx, HandleObjectGroup group, size_t length,
@@ -3561,10 +3558,7 @@ NewArrayTryUseGroup(ExclusiveContext* cx, HandleObjectGroup group, size_t length
{
MOZ_ASSERT(newKind != SingletonObject);
- if (group->maybePreliminaryObjects())
- group->maybePreliminaryObjects()->maybeAnalyze(cx, group);
-
- if (group->shouldPreTenure() || group->maybePreliminaryObjects())
+ if (group->shouldPreTenure())
newKind = TenuredObject;
RootedObject proto(cx, group->proto().toObject());
@@ -3579,9 +3573,6 @@ NewArrayTryUseGroup(ExclusiveContext* cx, HandleObjectGroup group, size_t length
if (res->length() > INT32_MAX)
res->setLength(cx, res->length());
- if (PreliminaryObjectArray* preliminaryObjects = group->maybePreliminaryObjects())
- preliminaryObjects->registerNewObject(res);
-
return res;
}
@@ -3601,10 +3592,7 @@ js::NewPartlyAllocatedArrayTryUseGroup(ExclusiveContext* cx, HandleObjectGroup g
// Return a new array with the default prototype and specified allocated
// capacity and length. If possible, try to reuse the group of the input
// object. The resulting array will either reuse the input object's group or
-// will have unknown property types. Additionally, the result will have the
-// same boxed/unboxed elements representation as the input object, unless
-// |length| is larger than the input object's initialized length (in which case
-// UnboxedArrayObject::MaximumCapacity might be exceeded).
+// will have unknown property types.
template <uint32_t maxLength>
static inline ArrayObject*
NewArrayTryReuseGroup(JSContext* cx, JSObject* obj, size_t length,
diff --git a/js/src/jsarray.h b/js/src/jsarray.h
index 36cac743d..f9e11149f 100644
--- a/js/src/jsarray.h
+++ b/js/src/jsarray.h
@@ -75,8 +75,6 @@ NewDenseFullyAllocatedArrayWithTemplate(JSContext* cx, uint32_t length, JSObject
extern ArrayObject*
NewDenseCopyOnWriteArray(JSContext* cx, HandleArrayObject templateObject, gc::InitialHeap heap);
-// The methods below can create either boxed or unboxed arrays.
-
extern ArrayObject*
NewFullyAllocatedArrayTryUseGroup(ExclusiveContext* cx, HandleObjectGroup group, size_t length,
NewObjectKind newKind = GenericObject);
diff --git a/js/src/vm/Interpreter.cpp b/js/src/vm/Interpreter.cpp
index 7d05b2d4c..f4f6c0da4 100644
--- a/js/src/vm/Interpreter.cpp
+++ b/js/src/vm/Interpreter.cpp
@@ -4933,7 +4933,7 @@ js::NewObjectOperation(JSContext* cx, HandleScript script, jsbytecode* pc,
newKind = TenuredObject;
}
- RootedObject obj(cx);
+ RootedPlainObject obj(cx);
if (*pc == JSOP_NEWOBJECT) {
RootedPlainObject baseObject(cx, &script->getObject(pc)->as<PlainObject>());
@@ -5011,9 +5011,6 @@ js::NewArrayOperation(JSContext* cx, HandleScript script, jsbytecode* pc, uint32
MOZ_ASSERT(obj->isSingleton());
} else {
obj->setGroup(group);
-
- if (PreliminaryObjectArray* preliminaryObjects = group->maybePreliminaryObjects())
- preliminaryObjects->registerNewObject(obj);
}
return obj;
diff --git a/js/src/vm/ObjectGroup.cpp b/js/src/vm/ObjectGroup.cpp
index 6b984a803..63ac33eea 100644
--- a/js/src/vm/ObjectGroup.cpp
+++ b/js/src/vm/ObjectGroup.cpp
@@ -838,17 +838,6 @@ ObjectGroup::newArrayObject(ExclusiveContext* cx,
AddTypePropertyId(cx, group, nullptr, JSID_VOID, elementType);
- if (elementType != TypeSet::UnknownType()) {
- // Keep track of the initial objects we create with this type.
- // If the initial ones have a consistent shape and property types, we
- // will try to use an unboxed layout for the group.
- PreliminaryObjectArrayWithTemplate* preliminaryObjects =
- cx->new_<PreliminaryObjectArrayWithTemplate>(nullptr);
- if (!preliminaryObjects)
- return nullptr;
- group->setPreliminaryObjects(preliminaryObjects);
- }
-
if (!p.add(cx, *table, ObjectGroupCompartment::ArrayObjectKey(elementType), group))
return nullptr;
}
@@ -856,9 +845,6 @@ ObjectGroup::newArrayObject(ExclusiveContext* cx,
// The type of the elements being added will already be reflected in type
// information.
ShouldUpdateTypes updateTypes = ShouldUpdateTypes::DontUpdate;
- if (group->maybePreliminaryObjects())
- group->maybePreliminaryObjects()->maybeAnalyze(cx, group);
-
return NewCopiedArrayTryUseGroup(cx, group, vp, length, newKind, updateTypes);
}
@@ -868,27 +854,13 @@ GiveObjectGroup(ExclusiveContext* cx, JSObject* source, JSObject* target)
{
MOZ_ASSERT(source->group() != target->group());
- if (!target->is<ArrayObject>())
+ if (!target->is<ArrayObject>() || !source->is<ArrayObject>()) {
return true;
-
- if (target->group()->maybePreliminaryObjects()) {
- bool force = IsInsideNursery(source);
- target->group()->maybePreliminaryObjects()->maybeAnalyze(cx, target->group(), force);
}
- ObjectGroup* sourceGroup = source->group();
-
- if (source->is<ArrayObject>()) {
- source->setGroup(target->group());
- } else {
- return true;
- }
+ source->setGroup(target->group());
- if (sourceGroup->maybePreliminaryObjects())
- sourceGroup->maybePreliminaryObjects()->unregisterObject(source);
- if (target->group()->maybePreliminaryObjects())
- target->group()->maybePreliminaryObjects()->registerNewObject(source);
- for (size_t i = 0; i < source->as<ArrayObject>().getDenseInitializedLength(); i++) {
+ for (size_t i = 0; i < source->as<ArrayObject>().getDenseInitializedLength(); i++) {
Value v = source->as<ArrayObject>().getDenseElement(i);
AddTypePropertyId(cx, source->group(), source, JSID_VOID, v);
}
diff --git a/js/src/vm/TypeInference.cpp b/js/src/vm/TypeInference.cpp
index 2160dbc51..0551e2c58 100644
--- a/js/src/vm/TypeInference.cpp
+++ b/js/src/vm/TypeInference.cpp
@@ -3393,7 +3393,7 @@ JSFunction::setTypeForScriptedFunction(ExclusiveContext* cx, HandleFunction fun,
/////////////////////////////////////////////////////////////////////
void
-PreliminaryObjectArray::registerNewObject(JSObject* res)
+PreliminaryObjectArray::registerNewObject(PlainObject* res)
{
// The preliminary object pointers are weak, and won't be swept properly
// during nursery collections, so the preliminary objects need to be
@@ -3411,7 +3411,7 @@ PreliminaryObjectArray::registerNewObject(JSObject* res)
}
void
-PreliminaryObjectArray::unregisterObject(JSObject* obj)
+PreliminaryObjectArray::unregisterObject(PlainObject* obj)
{
for (size_t i = 0; i < COUNT; i++) {
if (objects[i] == obj) {
diff --git a/js/src/vm/TypeInference.h b/js/src/vm/TypeInference.h
index 04fed448c..94ce7e871 100644
--- a/js/src/vm/TypeInference.h
+++ b/js/src/vm/TypeInference.h
@@ -814,8 +814,8 @@ class PreliminaryObjectArray
public:
PreliminaryObjectArray() = default;
- void registerNewObject(JSObject* res);
- void unregisterObject(JSObject* obj);
+ void registerNewObject(PlainObject* res);
+ void unregisterObject(PlainObject* obj);
JSObject* get(size_t i) const {
MOZ_ASSERT(i < COUNT);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 11:10:10 +0000