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authorMoonchild <mcwerewolf@wolfbeast.com>2019-05-22 14:14:18 +0000
committerGitHub <noreply@github.com>2019-05-22 14:14:18 +0000
commitbe8d03cf14455a80342582e8578fdbee590f350a (patch)
treea1a1f60d130bf760dc86e21e0e72c04e0834bfd2
parenta1f96f11d4ea35b730255249c7ae2c7e4935331e (diff)
parent201d8ee48926569fee200fbc9b4d506554869b5d (diff)
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Merge pull request #1091 from MoonchildProductions/remove-unboxed
Remove unboxed objects phase 1
-rw-r--r--js/src/gc/Marking.cpp46
-rw-r--r--js/src/gc/Tracer.cpp69
-rw-r--r--js/src/jit/AliasAnalysisShared.cpp2
-rw-r--r--js/src/jit/BaselineInspector.cpp31
-rw-r--r--js/src/jit/BaselineInspector.h9
-rw-r--r--js/src/jit/CodeGenerator.cpp61
-rw-r--r--js/src/jit/CodeGenerator.h3
-rw-r--r--js/src/jit/IonAnalysis.cpp2
-rw-r--r--js/src/jit/IonBuilder.cpp272
-rw-r--r--js/src/jit/IonBuilder.h10
-rw-r--r--js/src/jit/Lowering.cpp26
-rw-r--r--js/src/jit/Lowering.h3
-rw-r--r--js/src/jit/MCallOptimize.cpp8
-rw-r--r--js/src/jit/MIR.cpp161
-rw-r--r--js/src/jit/MIR.h131
-rw-r--r--js/src/jit/MOpcodes.h3
-rw-r--r--js/src/jit/OptimizationTracking.cpp2
-rw-r--r--js/src/jit/ScalarReplacement.cpp112
-rw-r--r--js/src/jit/SharedIC.cpp1
-rw-r--r--js/src/jit/shared/LIR-shared.h48
-rw-r--r--js/src/jit/shared/LOpcodes-shared.h3
-rw-r--r--js/src/jsapi.cpp3
-rw-r--r--js/src/jsapi.h25
-rw-r--r--js/src/jsgc.cpp6
-rw-r--r--js/src/jsiter.cpp42
-rw-r--r--js/src/jsobj.cpp76
-rw-r--r--js/src/shell/js.cpp3
-rw-r--r--js/src/vm/Interpreter-inl.h13
-rw-r--r--js/src/vm/Interpreter.cpp7
-rw-r--r--js/src/vm/ReceiverGuard.cpp1
-rw-r--r--js/src/vm/ReceiverGuard.h5
-rw-r--r--js/src/vm/TypeInference.cpp16
-rw-r--r--js/src/vm/TypeInference.h1
-rw-r--r--js/src/vm/UnboxedObject.cpp400
-rw-r--r--js/src/vm/UnboxedObject.h7
-rw-r--r--js/xpconnect/src/XPCJSContext.cpp4
-rw-r--r--modules/libpref/init/all.js1
37 files changed, 102 insertions, 1511 deletions
diff --git a/js/src/gc/Marking.cpp b/js/src/gc/Marking.cpp
index 3ea4c9d29..47d2314c1 100644
--- a/js/src/gc/Marking.cpp
+++ b/js/src/gc/Marking.cpp
@@ -18,6 +18,7 @@
#include "builtin/ModuleObject.h"
#include "gc/GCInternals.h"
#include "gc/Policy.h"
+#include "gc/StoreBuffer-inl.h"
#include "jit/IonCode.h"
#include "js/SliceBudget.h"
#include "vm/ArgumentsObject.h"
@@ -28,7 +29,6 @@
#include "vm/Shape.h"
#include "vm/Symbol.h"
#include "vm/TypedArrayObject.h"
-#include "vm/UnboxedObject.h"
#include "wasm/WasmJS.h"
#include "jscompartmentinlines.h"
@@ -37,7 +37,6 @@
#include "gc/Nursery-inl.h"
#include "vm/String-inl.h"
-#include "vm/UnboxedObject-inl.h"
using namespace js;
using namespace js::gc;
@@ -1395,14 +1394,6 @@ js::ObjectGroup::traceChildren(JSTracer* trc)
if (maybePreliminaryObjects())
maybePreliminaryObjects()->trace(trc);
- if (maybeUnboxedLayout())
- unboxedLayout().trace(trc);
-
- if (ObjectGroup* unboxedGroup = maybeOriginalUnboxedGroup()) {
- TraceManuallyBarrieredEdge(trc, &unboxedGroup, "group_original_unboxed_group");
- setOriginalUnboxedGroup(unboxedGroup);
- }
-
if (JSObject* descr = maybeTypeDescr()) {
TraceManuallyBarrieredEdge(trc, &descr, "group_type_descr");
setTypeDescr(&descr->as<TypeDescr>());
@@ -1436,12 +1427,6 @@ js::GCMarker::lazilyMarkChildren(ObjectGroup* group)
if (group->maybePreliminaryObjects())
group->maybePreliminaryObjects()->trace(this);
- if (group->maybeUnboxedLayout())
- group->unboxedLayout().trace(this);
-
- if (ObjectGroup* unboxedGroup = group->maybeOriginalUnboxedGroup())
- traverseEdge(group, unboxedGroup);
-
if (TypeDescr* descr = group->maybeTypeDescr())
traverseEdge(group, static_cast<JSObject*>(descr));
@@ -1484,23 +1469,6 @@ CallTraceHook(Functor f, JSTracer* trc, JSObject* obj, CheckGeneration check, Ar
return nullptr;
}
- if (clasp == &UnboxedPlainObject::class_) {
- JSObject** pexpando = obj->as<UnboxedPlainObject>().addressOfExpando();
- if (*pexpando)
- f(pexpando, mozilla::Forward<Args>(args)...);
-
- UnboxedPlainObject& unboxed = obj->as<UnboxedPlainObject>();
- const UnboxedLayout& layout = check == CheckGeneration::DoChecks
- ? unboxed.layout()
- : unboxed.layoutDontCheckGeneration();
- if (layout.traceList()) {
- VisitTraceList(f, layout.traceList(), unboxed.data(),
- mozilla::Forward<Args>(args)...);
- }
-
- return nullptr;
- }
-
clasp->doTrace(trc, obj);
if (!clasp->isNative())
@@ -2293,18 +2261,6 @@ static inline void
TraceWholeCell(TenuringTracer& mover, JSObject* object)
{
mover.traceObject(object);
-
- // Additionally trace the expando object attached to any unboxed plain
- // objects. Baseline and Ion can write properties to the expando while
- // only adding a post barrier to the owning unboxed object. Note that
- // it isn't possible for a nursery unboxed object to have a tenured
- // expando, so that adding a post barrier on the original object will
- // capture any tenured->nursery edges in the expando as well.
-
- if (object->is<UnboxedPlainObject>()) {
- if (UnboxedExpandoObject* expando = object->as<UnboxedPlainObject>().maybeExpando())
- expando->traceChildren(&mover);
- }
}
static inline void
diff --git a/js/src/gc/Tracer.cpp b/js/src/gc/Tracer.cpp
index 63cd9b08a..3416464dd 100644
--- a/js/src/gc/Tracer.cpp
+++ b/js/src/gc/Tracer.cpp
@@ -201,80 +201,15 @@ gc::TraceCycleCollectorChildren(JS::CallbackTracer* trc, Shape* shape)
} while (shape);
}
-// Object groups can point to other object groups via an UnboxedLayout or the
-// the original unboxed group link. There can potentially be deep or cyclic
-// chains of such groups to trace through without going through a thing that
-// participates in cycle collection. These need to be handled iteratively to
-// avoid blowing the stack when running the cycle collector's callback tracer.
-struct ObjectGroupCycleCollectorTracer : public JS::CallbackTracer
-{
- explicit ObjectGroupCycleCollectorTracer(JS::CallbackTracer* innerTracer)
- : JS::CallbackTracer(innerTracer->runtime(), DoNotTraceWeakMaps),
- innerTracer(innerTracer)
- {}
-
- void onChild(const JS::GCCellPtr& thing) override;
-
- JS::CallbackTracer* innerTracer;
- Vector<ObjectGroup*, 4, SystemAllocPolicy> seen, worklist;
-};
-
-void
-ObjectGroupCycleCollectorTracer::onChild(const JS::GCCellPtr& thing)
-{
- if (thing.is<BaseShape>()) {
- // The CC does not care about BaseShapes, and no additional GC things
- // will be reached by following this edge.
- return;
- }
-
- if (thing.is<JSObject>() || thing.is<JSScript>()) {
- // Invoke the inner cycle collector callback on this child. It will not
- // recurse back into TraceChildren.
- innerTracer->onChild(thing);
- return;
- }
-
- if (thing.is<ObjectGroup>()) {
- // If this group is required to be in an ObjectGroup chain, trace it
- // via the provided worklist rather than continuing to recurse.
- ObjectGroup& group = thing.as<ObjectGroup>();
- if (group.maybeUnboxedLayout()) {
- for (size_t i = 0; i < seen.length(); i++) {
- if (seen[i] == &group)
- return;
- }
- if (seen.append(&group) && worklist.append(&group)) {
- return;
- } else {
- // If append fails, keep tracing normally. The worst that will
- // happen is we end up overrecursing.
- }
- }
- }
-
- TraceChildren(this, thing.asCell(), thing.kind());
-}
-
void
gc::TraceCycleCollectorChildren(JS::CallbackTracer* trc, ObjectGroup* group)
{
MOZ_ASSERT(trc->isCallbackTracer());
- // Early return if this group is not required to be in an ObjectGroup chain.
- if (!group->maybeUnboxedLayout())
- return group->traceChildren(trc);
-
- ObjectGroupCycleCollectorTracer groupTracer(trc->asCallbackTracer());
- group->traceChildren(&groupTracer);
-
- while (!groupTracer.worklist.empty()) {
- ObjectGroup* innerGroup = groupTracer.worklist.popCopy();
- innerGroup->traceChildren(&groupTracer);
- }
+ group->traceChildren(trc);
}
-
+
/*** Traced Edge Printer *************************************************************************/
static size_t
diff --git a/js/src/jit/AliasAnalysisShared.cpp b/js/src/jit/AliasAnalysisShared.cpp
index 81c0fd067..3b83df74e 100644
--- a/js/src/jit/AliasAnalysisShared.cpp
+++ b/js/src/jit/AliasAnalysisShared.cpp
@@ -114,8 +114,6 @@ GetObject(const MDefinition* ins)
case MDefinition::Op_GuardObjectGroup:
case MDefinition::Op_GuardObjectIdentity:
case MDefinition::Op_GuardClass:
- case MDefinition::Op_GuardUnboxedExpando:
- case MDefinition::Op_LoadUnboxedExpando:
case MDefinition::Op_LoadSlot:
case MDefinition::Op_StoreSlot:
case MDefinition::Op_InArray:
diff --git a/js/src/jit/BaselineInspector.cpp b/js/src/jit/BaselineInspector.cpp
index c9e09bed7..9c7b88fb2 100644
--- a/js/src/jit/BaselineInspector.cpp
+++ b/js/src/jit/BaselineInspector.cpp
@@ -96,13 +96,8 @@ VectorAppendNoDuplicate(S& list, T value)
static bool
AddReceiver(const ReceiverGuard& receiver,
- BaselineInspector::ReceiverVector& receivers,
- BaselineInspector::ObjectGroupVector& convertUnboxedGroups)
+ BaselineInspector::ReceiverVector& receivers)
{
- if (receiver.group && receiver.group->maybeUnboxedLayout()) {
- if (receiver.group->unboxedLayout().nativeGroup())
- return VectorAppendNoDuplicate(convertUnboxedGroups, receiver.group);
- }
return VectorAppendNoDuplicate(receivers, receiver);
}
@@ -170,16 +165,12 @@ GetCacheIRReceiverForUnboxedProperty(ICCacheIR_Monitored* stub, ReceiverGuard* r
}
bool
-BaselineInspector::maybeInfoForPropertyOp(jsbytecode* pc, ReceiverVector& receivers,
- ObjectGroupVector& convertUnboxedGroups)
+BaselineInspector::maybeInfoForPropertyOp(jsbytecode* pc, ReceiverVector& receivers)
{
// Return a list of the receivers seen by the baseline IC for the current
// op. Empty lists indicate no receivers are known, or there was an
- // uncacheable access. convertUnboxedGroups is used for unboxed object
- // groups which have been seen, but have had instances converted to native
- // objects and should be eagerly converted by Ion.
+ // uncacheable access.
MOZ_ASSERT(receivers.empty());
- MOZ_ASSERT(convertUnboxedGroups.empty());
if (!hasBaselineScript())
return true;
@@ -207,7 +198,7 @@ BaselineInspector::maybeInfoForPropertyOp(jsbytecode* pc, ReceiverVector& receiv
return true;
}
- if (!AddReceiver(receiver, receivers, convertUnboxedGroups))
+ if (!AddReceiver(receiver, receivers))
return false;
stub = stub->next();
@@ -700,14 +691,12 @@ bool
BaselineInspector::commonGetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonGetter, Shape** globalShape,
bool* isOwnProperty,
- ReceiverVector& receivers,
- ObjectGroupVector& convertUnboxedGroups)
+ ReceiverVector& receivers)
{
if (!hasBaselineScript())
return false;
MOZ_ASSERT(receivers.empty());
- MOZ_ASSERT(convertUnboxedGroups.empty());
*holder = nullptr;
const ICEntry& entry = icEntryFromPC(pc);
@@ -719,7 +708,7 @@ BaselineInspector::commonGetPropFunction(jsbytecode* pc, JSObject** holder, Shap
{
ICGetPropCallGetter* nstub = static_cast<ICGetPropCallGetter*>(stub);
bool isOwn = nstub->isOwnGetter();
- if (!isOwn && !AddReceiver(nstub->receiverGuard(), receivers, convertUnboxedGroups))
+ if (!isOwn && !AddReceiver(nstub->receiverGuard(), receivers))
return false;
if (!*holder) {
@@ -751,21 +740,19 @@ BaselineInspector::commonGetPropFunction(jsbytecode* pc, JSObject** holder, Shap
if (!*holder)
return false;
- MOZ_ASSERT(*isOwnProperty == (receivers.empty() && convertUnboxedGroups.empty()));
+ MOZ_ASSERT(*isOwnProperty == (receivers.empty()));
return true;
}
bool
BaselineInspector::commonSetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonSetter, bool* isOwnProperty,
- ReceiverVector& receivers,
- ObjectGroupVector& convertUnboxedGroups)
+ ReceiverVector& receivers)
{
if (!hasBaselineScript())
return false;
MOZ_ASSERT(receivers.empty());
- MOZ_ASSERT(convertUnboxedGroups.empty());
*holder = nullptr;
const ICEntry& entry = icEntryFromPC(pc);
@@ -774,7 +761,7 @@ BaselineInspector::commonSetPropFunction(jsbytecode* pc, JSObject** holder, Shap
if (stub->isSetProp_CallScripted() || stub->isSetProp_CallNative()) {
ICSetPropCallSetter* nstub = static_cast<ICSetPropCallSetter*>(stub);
bool isOwn = nstub->isOwnSetter();
- if (!isOwn && !AddReceiver(nstub->receiverGuard(), receivers, convertUnboxedGroups))
+ if (!isOwn && !AddReceiver(nstub->receiverGuard(), receivers))
return false;
if (!*holder) {
diff --git a/js/src/jit/BaselineInspector.h b/js/src/jit/BaselineInspector.h
index 961df18aa..4a1791798 100644
--- a/js/src/jit/BaselineInspector.h
+++ b/js/src/jit/BaselineInspector.h
@@ -95,8 +95,7 @@ class BaselineInspector
public:
typedef Vector<ReceiverGuard, 4, JitAllocPolicy> ReceiverVector;
typedef Vector<ObjectGroup*, 4, JitAllocPolicy> ObjectGroupVector;
- MOZ_MUST_USE bool maybeInfoForPropertyOp(jsbytecode* pc, ReceiverVector& receivers,
- ObjectGroupVector& convertUnboxedGroups);
+ MOZ_MUST_USE bool maybeInfoForPropertyOp(jsbytecode* pc, ReceiverVector& receivers);
SetElemICInspector setElemICInspector(jsbytecode* pc) {
return makeICInspector<SetElemICInspector>(pc, ICStub::SetElem_Fallback);
@@ -131,12 +130,10 @@ class BaselineInspector
MOZ_MUST_USE bool commonGetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonGetter, Shape** globalShape,
- bool* isOwnProperty, ReceiverVector& receivers,
- ObjectGroupVector& convertUnboxedGroups);
+ bool* isOwnProperty, ReceiverVector& receivers);
MOZ_MUST_USE bool commonSetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonSetter, bool* isOwnProperty,
- ReceiverVector& receivers,
- ObjectGroupVector& convertUnboxedGroups);
+ ReceiverVector& receivers);
MOZ_MUST_USE bool instanceOfData(jsbytecode* pc, Shape** shape, uint32_t* slot,
JSObject** prototypeObject);
diff --git a/js/src/jit/CodeGenerator.cpp b/js/src/jit/CodeGenerator.cpp
index 16d026092..6d1fb6b9b 100644
--- a/js/src/jit/CodeGenerator.cpp
+++ b/js/src/jit/CodeGenerator.cpp
@@ -3031,15 +3031,6 @@ GuardReceiver(MacroAssembler& masm, const ReceiverGuard& guard,
{
if (guard.group) {
masm.branchTestObjGroup(Assembler::NotEqual, obj, guard.group, miss);
-
- Address expandoAddress(obj, UnboxedPlainObject::offsetOfExpando());
- if (guard.shape) {
- masm.loadPtr(expandoAddress, scratch);
- masm.branchPtr(Assembler::Equal, scratch, ImmWord(0), miss);
- masm.branchTestObjShape(Assembler::NotEqual, scratch, guard.shape, miss);
- } else if (checkNullExpando) {
- masm.branchPtr(Assembler::NotEqual, expandoAddress, ImmWord(0), miss);
- }
} else {
masm.branchTestObjShape(Assembler::NotEqual, obj, guard.shape, miss);
}
@@ -3077,13 +3068,6 @@ CodeGenerator::emitGetPropertyPolymorphic(LInstruction* ins, Register obj, Regis
masm.loadPtr(Address(target, NativeObject::offsetOfSlots()), scratch);
masm.loadTypedOrValue(Address(scratch, offset), output);
}
- } else {
- masm.comment("loadUnboxedProperty");
- const UnboxedLayout::Property* property =
- receiver.group->unboxedLayout().lookup(mir->name());
- Address propertyAddr(obj, UnboxedPlainObject::offsetOfData() + property->offset);
-
- masm.loadUnboxedProperty(propertyAddr, property->type, output);
}
if (i == mir->numReceivers() - 1) {
@@ -3124,8 +3108,6 @@ EmitUnboxedPreBarrier(MacroAssembler &masm, T address, JSValueType type)
masm.patchableCallPreBarrier(address, MIRType::Object);
else if (type == JSVAL_TYPE_STRING)
masm.patchableCallPreBarrier(address, MIRType::String);
- else
- MOZ_ASSERT(!UnboxedTypeNeedsPreBarrier(type));
}
void
@@ -3161,13 +3143,6 @@ CodeGenerator::emitSetPropertyPolymorphic(LInstruction* ins, Register obj, Regis
emitPreBarrier(addr);
masm.storeConstantOrRegister(value, addr);
}
- } else {
- const UnboxedLayout::Property* property =
- receiver.group->unboxedLayout().lookup(mir->name());
- Address propertyAddr(obj, UnboxedPlainObject::offsetOfData() + property->offset);
-
- EmitUnboxedPreBarrier(masm, propertyAddr, property->type);
- masm.storeUnboxedProperty(propertyAddr, property->type, value, nullptr);
}
if (i == mir->numReceivers() - 1) {
@@ -3333,27 +3308,6 @@ CodeGenerator::visitGuardReceiverPolymorphic(LGuardReceiverPolymorphic* lir)
}
void
-CodeGenerator::visitGuardUnboxedExpando(LGuardUnboxedExpando* lir)
-{
- Label miss;
-
- Register obj = ToRegister(lir->object());
- masm.branchPtr(lir->mir()->requireExpando() ? Assembler::Equal : Assembler::NotEqual,
- Address(obj, UnboxedPlainObject::offsetOfExpando()), ImmWord(0), &miss);
-
- bailoutFrom(&miss, lir->snapshot());
-}
-
-void
-CodeGenerator::visitLoadUnboxedExpando(LLoadUnboxedExpando* lir)
-{
- Register obj = ToRegister(lir->object());
- Register result = ToRegister(lir->getDef(0));
-
- masm.loadPtr(Address(obj, UnboxedPlainObject::offsetOfExpando()), result);
-}
-
-void
CodeGenerator::visitTypeBarrierV(LTypeBarrierV* lir)
{
ValueOperand operand = ToValue(lir, LTypeBarrierV::Input);
@@ -8576,21 +8530,6 @@ static const VMFunction ConvertUnboxedArrayObjectToNativeInfo =
FunctionInfo<ConvertUnboxedObjectToNativeFn>(UnboxedArrayObject::convertToNative,
"UnboxedArrayObject::convertToNative");
-void
-CodeGenerator::visitConvertUnboxedObjectToNative(LConvertUnboxedObjectToNative* lir)
-{
- Register object = ToRegister(lir->getOperand(0));
-
- OutOfLineCode* ool = oolCallVM(lir->mir()->group()->unboxedLayoutDontCheckGeneration().isArray()
- ? ConvertUnboxedArrayObjectToNativeInfo
- : ConvertUnboxedPlainObjectToNativeInfo,
- lir, ArgList(object), StoreNothing());
-
- masm.branchPtr(Assembler::Equal, Address(object, JSObject::offsetOfGroup()),
- ImmGCPtr(lir->mir()->group()), ool->entry());
- masm.bind(ool->rejoin());
-}
-
typedef bool (*ArrayPopShiftFn)(JSContext*, HandleObject, MutableHandleValue);
static const VMFunction ArrayPopDenseInfo =
FunctionInfo<ArrayPopShiftFn>(jit::ArrayPopDense, "ArrayPopDense");
diff --git a/js/src/jit/CodeGenerator.h b/js/src/jit/CodeGenerator.h
index b226f6cc9..292f163b5 100644
--- a/js/src/jit/CodeGenerator.h
+++ b/js/src/jit/CodeGenerator.h
@@ -148,8 +148,6 @@ class CodeGenerator final : public CodeGeneratorSpecific
void visitMaybeCopyElementsForWrite(LMaybeCopyElementsForWrite* lir);
void visitGuardObjectIdentity(LGuardObjectIdentity* guard);
void visitGuardReceiverPolymorphic(LGuardReceiverPolymorphic* lir);
- void visitGuardUnboxedExpando(LGuardUnboxedExpando* lir);
- void visitLoadUnboxedExpando(LLoadUnboxedExpando* lir);
void visitTypeBarrierV(LTypeBarrierV* lir);
void visitTypeBarrierO(LTypeBarrierO* lir);
void visitMonitorTypes(LMonitorTypes* lir);
@@ -310,7 +308,6 @@ class CodeGenerator final : public CodeGeneratorSpecific
void visitFallibleStoreElementV(LFallibleStoreElementV* lir);
void visitFallibleStoreElementT(LFallibleStoreElementT* lir);
void visitStoreUnboxedPointer(LStoreUnboxedPointer* lir);
- void visitConvertUnboxedObjectToNative(LConvertUnboxedObjectToNative* lir);
void emitArrayPopShift(LInstruction* lir, const MArrayPopShift* mir, Register obj,
Register elementsTemp, Register lengthTemp, TypedOrValueRegister out);
void visitArrayPopShiftV(LArrayPopShiftV* lir);
diff --git a/js/src/jit/IonAnalysis.cpp b/js/src/jit/IonAnalysis.cpp
index d255c32a8..41c71c9c3 100644
--- a/js/src/jit/IonAnalysis.cpp
+++ b/js/src/jit/IonAnalysis.cpp
@@ -3515,8 +3515,6 @@ PassthroughOperand(MDefinition* def)
return def->toConvertElementsToDoubles()->elements();
if (def->isMaybeCopyElementsForWrite())
return def->toMaybeCopyElementsForWrite()->object();
- if (def->isConvertUnboxedObjectToNative())
- return def->toConvertUnboxedObjectToNative()->object();
return nullptr;
}
diff --git a/js/src/jit/IonBuilder.cpp b/js/src/jit/IonBuilder.cpp
index 54d05cac4..af85011be 100644
--- a/js/src/jit/IonBuilder.cpp
+++ b/js/src/jit/IonBuilder.cpp
@@ -32,7 +32,6 @@
#include "vm/EnvironmentObject-inl.h"
#include "vm/NativeObject-inl.h"
#include "vm/ObjectGroup-inl.h"
-#include "vm/UnboxedObject-inl.h"
using namespace js;
using namespace js::jit;
@@ -6392,7 +6391,7 @@ IonBuilder::createThisScriptedSingleton(JSFunction* target, MDefinition* callee)
JSObject* templateObject = inspector->getTemplateObject(pc);
if (!templateObject)
return nullptr;
- if (!templateObject->is<PlainObject>() && !templateObject->is<UnboxedPlainObject>())
+ if (!templateObject->is<PlainObject>())
return nullptr;
if (templateObject->staticPrototype() != proto)
return nullptr;
@@ -6429,7 +6428,7 @@ IonBuilder::createThisScriptedBaseline(MDefinition* callee)
JSObject* templateObject = inspector->getTemplateObject(pc);
if (!templateObject)
return nullptr;
- if (!templateObject->is<PlainObject>() && !templateObject->is<UnboxedPlainObject>())
+ if (!templateObject->is<PlainObject>())
return nullptr;
Shape* shape = target->lookupPure(compartment->runtime()->names().prototype);
@@ -7718,8 +7717,6 @@ IonBuilder::jsop_initprop(PropertyName* name)
if (templateObject->is<PlainObject>()) {
if (!templateObject->as<PlainObject>().containsPure(name))
useSlowPath = true;
- } else {
- MOZ_ASSERT(templateObject->as<UnboxedPlainObject>().layout().lookup(name));
}
} else {
useSlowPath = true;
@@ -8178,8 +8175,7 @@ IonBuilder::maybeMarkEmpty(MDefinition* ins)
static bool
ClassHasEffectlessLookup(const Class* clasp)
{
- return (clasp == &UnboxedPlainObject::class_) ||
- (clasp == &UnboxedArrayObject::class_) ||
+ return (clasp == &UnboxedArrayObject::class_) ||
IsTypedObjectClass(clasp) ||
(clasp->isNative() && !clasp->getOpsLookupProperty());
}
@@ -9012,8 +9008,6 @@ IonBuilder::jsop_getelem()
}
obj = maybeUnboxForPropertyAccess(obj);
- if (obj->type() == MIRType::Object)
- obj = convertUnboxedObjects(obj);
bool emitted = false;
@@ -10137,7 +10131,7 @@ IonBuilder::jsop_setelem()
MDefinition* value = current->pop();
MDefinition* index = current->pop();
- MDefinition* object = convertUnboxedObjects(current->pop());
+ MDefinition* object = current->pop();
trackTypeInfo(TrackedTypeSite::Receiver, object->type(), object->resultTypeSet());
trackTypeInfo(TrackedTypeSite::Index, index->type(), index->resultTypeSet());
@@ -10972,11 +10966,8 @@ IonBuilder::getDefiniteSlot(TemporaryTypeSet* types, PropertyName* name, uint32_
}
// Definite slots will always be fixed slots when they are in the
- // allowable range for fixed slots, except for objects which were
- // converted from unboxed objects and have a smaller allocation size.
+ // allowable range for fixed slots.
size_t nfixed = NativeObject::MAX_FIXED_SLOTS;
- if (ObjectGroup* group = key->group()->maybeOriginalUnboxedGroup())
- nfixed = gc::GetGCKindSlots(group->unboxedLayout().getAllocKind());
uint32_t propertySlot = property.maybeTypes()->definiteSlot();
if (slot == UINT32_MAX) {
@@ -11033,8 +11024,6 @@ IonBuilder::getUnboxedOffset(TemporaryTypeSet* types, PropertyName* name, JSValu
return UINT32_MAX;
}
- key->watchStateChangeForUnboxedConvertedToNative(constraints());
-
if (offset == UINT32_MAX) {
offset = property->offset;
*punboxedType = property->type;
@@ -11496,8 +11485,6 @@ IonBuilder::jsop_getprop(PropertyName* name)
}
obj = maybeUnboxForPropertyAccess(obj);
- if (obj->type() == MIRType::Object)
- obj = convertUnboxedObjects(obj);
BarrierKind barrier = PropertyReadNeedsTypeBarrier(analysisContext, constraints(),
obj, name, types);
@@ -11569,11 +11556,6 @@ IonBuilder::jsop_getprop(PropertyName* name)
if (!getPropTryDefiniteSlot(&emitted, obj, name, barrier, types) || emitted)
return emitted;
- // Try to emit loads from unboxed objects.
- trackOptimizationAttempt(TrackedStrategy::GetProp_Unboxed);
- if (!getPropTryUnboxed(&emitted, obj, name, barrier, types) || emitted)
- return emitted;
-
// Try to inline a common property getter, or make a call.
trackOptimizationAttempt(TrackedStrategy::GetProp_CommonGetter);
if (!getPropTryCommonGetter(&emitted, obj, name, types) || emitted)
@@ -11939,49 +11921,6 @@ IonBuilder::getPropTryComplexPropOfTypedObject(bool* emitted,
fieldPrediction, fieldTypeObj);
}
-MDefinition*
-IonBuilder::convertUnboxedObjects(MDefinition* obj)
-{
- // If obj might be in any particular unboxed group which should be
- // converted to a native representation, perform that conversion. This does
- // not guarantee the object will not have such a group afterwards, if the
- // object's possible groups are not precisely known.
- TemporaryTypeSet* types = obj->resultTypeSet();
- if (!types || types->unknownObject() || !types->objectOrSentinel())
- return obj;
-
- BaselineInspector::ObjectGroupVector list(alloc());
- for (size_t i = 0; i < types->getObjectCount(); i++) {
- TypeSet::ObjectKey* key = obj->resultTypeSet()->getObject(i);
- if (!key || !key->isGroup())
- continue;
-
- if (UnboxedLayout* layout = key->group()->maybeUnboxedLayout()) {
- AutoEnterOOMUnsafeRegion oomUnsafe;
- if (layout->nativeGroup() && !list.append(key->group()))
- oomUnsafe.crash("IonBuilder::convertUnboxedObjects");
- }
- }
-
- return convertUnboxedObjects(obj, list);
-}
-
-MDefinition*
-IonBuilder::convertUnboxedObjects(MDefinition* obj,
- const BaselineInspector::ObjectGroupVector& list)
-{
- for (size_t i = 0; i < list.length(); i++) {
- ObjectGroup* group = list[i];
- if (TemporaryTypeSet* types = obj->resultTypeSet()) {
- if (!types->hasType(TypeSet::ObjectType(group)))
- continue;
- }
- obj = MConvertUnboxedObjectToNative::New(alloc(), obj, group);
- current->add(obj->toInstruction());
- }
- return obj;
-}
-
bool
IonBuilder::getPropTryDefiniteSlot(bool* emitted, MDefinition* obj, PropertyName* name,
BarrierKind barrier, TemporaryTypeSet* types)
@@ -12132,45 +12071,14 @@ IonBuilder::loadUnboxedValue(MDefinition* elements, size_t elementsOffset,
return load;
}
-bool
-IonBuilder::getPropTryUnboxed(bool* emitted, MDefinition* obj, PropertyName* name,
- BarrierKind barrier, TemporaryTypeSet* types)
-{
- MOZ_ASSERT(*emitted == false);
-
- JSValueType unboxedType;
- uint32_t offset = getUnboxedOffset(obj->resultTypeSet(), name, &unboxedType);
- if (offset == UINT32_MAX)
- return true;
-
- if (obj->type() != MIRType::Object) {
- MGuardObject* guard = MGuardObject::New(alloc(), obj);
- current->add(guard);
- obj = guard;
- }
-
- MInstruction* load = loadUnboxedProperty(obj, offset, unboxedType, barrier, types);
- current->push(load);
-
- if (!pushTypeBarrier(load, types, barrier))
- return false;
-
- trackOptimizationSuccess();
- *emitted = true;
- return true;
-}
-
MDefinition*
IonBuilder::addShapeGuardsForGetterSetter(MDefinition* obj, JSObject* holder, Shape* holderShape,
const BaselineInspector::ReceiverVector& receivers,
- const BaselineInspector::ObjectGroupVector& convertUnboxedGroups,
bool isOwnProperty)
{
MOZ_ASSERT(holder);
MOZ_ASSERT(holderShape);
- obj = convertUnboxedObjects(obj, convertUnboxedGroups);
-
if (isOwnProperty) {
MOZ_ASSERT(receivers.empty());
return addShapeGuard(obj, holderShape, Bailout_ShapeGuard);
@@ -12194,10 +12102,8 @@ IonBuilder::getPropTryCommonGetter(bool* emitted, MDefinition* obj, PropertyName
JSObject* foundProto = nullptr;
bool isOwnProperty = false;
BaselineInspector::ReceiverVector receivers(alloc());
- BaselineInspector::ObjectGroupVector convertUnboxedGroups(alloc());
if (!inspector->commonGetPropFunction(pc, &foundProto, &lastProperty, &commonGetter,
- &globalShape, &isOwnProperty,
- receivers, convertUnboxedGroups))
+ &globalShape, &isOwnProperty, receivers))
{
return true;
}
@@ -12213,8 +12119,7 @@ IonBuilder::getPropTryCommonGetter(bool* emitted, MDefinition* obj, PropertyName
// If type information is bad, we can still optimize the getter if we
// shape guard.
obj = addShapeGuardsForGetterSetter(obj, foundProto, lastProperty,
- receivers, convertUnboxedGroups,
- isOwnProperty);
+ receivers, isOwnProperty);
if (!obj)
return false;
}
@@ -12381,15 +12286,12 @@ IonBuilder::getPropTryInlineAccess(bool* emitted, MDefinition* obj, PropertyName
MOZ_ASSERT(*emitted == false);
BaselineInspector::ReceiverVector receivers(alloc());
- BaselineInspector::ObjectGroupVector convertUnboxedGroups(alloc());
- if (!inspector->maybeInfoForPropertyOp(pc, receivers, convertUnboxedGroups))
+ if (!inspector->maybeInfoForPropertyOp(pc, receivers))
return false;
if (!canInlinePropertyOpShapes(receivers))
return true;
- obj = convertUnboxedObjects(obj, convertUnboxedGroups);
-
MIRType rvalType = types->getKnownMIRType();
if (barrier != BarrierKind::NoBarrier || IsNullOrUndefined(rvalType))
rvalType = MIRType::Value;
@@ -12412,45 +12314,6 @@ IonBuilder::getPropTryInlineAccess(bool* emitted, MDefinition* obj, PropertyName
return true;
}
- if (receivers[0].shape) {
- // Monomorphic load from an unboxed object expando.
- spew("Inlining monomorphic unboxed expando GETPROP");
-
- obj = addGroupGuard(obj, receivers[0].group, Bailout_ShapeGuard);
- obj = addUnboxedExpandoGuard(obj, /* hasExpando = */ true, Bailout_ShapeGuard);
-
- MInstruction* expando = MLoadUnboxedExpando::New(alloc(), obj);
- current->add(expando);
-
- expando = addShapeGuard(expando, receivers[0].shape, Bailout_ShapeGuard);
-
- Shape* shape = receivers[0].shape->searchLinear(NameToId(name));
- MOZ_ASSERT(shape);
-
- if (!loadSlot(expando, shape, rvalType, barrier, types))
- return false;
-
- trackOptimizationOutcome(TrackedOutcome::Monomorphic);
- *emitted = true;
- return true;
- }
-
- // Monomorphic load from an unboxed object.
- ObjectGroup* group = receivers[0].group;
- if (obj->resultTypeSet() && !obj->resultTypeSet()->hasType(TypeSet::ObjectType(group)))
- return true;
-
- obj = addGroupGuard(obj, group, Bailout_ShapeGuard);
-
- const UnboxedLayout::Property* property = group->unboxedLayout().lookup(name);
- MInstruction* load = loadUnboxedProperty(obj, property->offset, property->type, barrier, types);
- current->push(load);
-
- if (!pushTypeBarrier(load, types, barrier))
- return false;
-
- trackOptimizationOutcome(TrackedOutcome::Monomorphic);
- *emitted = true;
return true;
}
@@ -12692,7 +12555,7 @@ bool
IonBuilder::jsop_setprop(PropertyName* name)
{
MDefinition* value = current->pop();
- MDefinition* obj = convertUnboxedObjects(current->pop());
+ MDefinition* obj = current->pop();
bool emitted = false;
startTrackingOptimizations();
@@ -12725,13 +12588,6 @@ IonBuilder::jsop_setprop(PropertyName* name)
bool barrier = PropertyWriteNeedsTypeBarrier(alloc(), constraints(), current, &obj, name, &value,
/* canModify = */ true);
- if (!forceInlineCaches()) {
- // Try to emit stores to unboxed objects.
- trackOptimizationAttempt(TrackedStrategy::SetProp_Unboxed);
- if (!setPropTryUnboxed(&emitted, obj, name, value, barrier, objTypes) || emitted)
- return emitted;
- }
-
// Add post barrier if needed. The instructions above manage any post
// barriers they need directly.
if (NeedsPostBarrier(value))
@@ -12765,10 +12621,8 @@ IonBuilder::setPropTryCommonSetter(bool* emitted, MDefinition* obj,
JSObject* foundProto = nullptr;
bool isOwnProperty;
BaselineInspector::ReceiverVector receivers(alloc());
- BaselineInspector::ObjectGroupVector convertUnboxedGroups(alloc());
if (!inspector->commonSetPropFunction(pc, &foundProto, &lastProperty, &commonSetter,
- &isOwnProperty,
- receivers, convertUnboxedGroups))
+ &isOwnProperty, receivers))
{
trackOptimizationOutcome(TrackedOutcome::NoProtoFound);
return true;
@@ -12783,8 +12637,7 @@ IonBuilder::setPropTryCommonSetter(bool* emitted, MDefinition* obj,
// If type information is bad, we can still optimize the setter if we
// shape guard.
obj = addShapeGuardsForGetterSetter(obj, foundProto, lastProperty,
- receivers, convertUnboxedGroups,
- isOwnProperty);
+ receivers, isOwnProperty);
if (!obj)
return false;
}
@@ -13100,40 +12953,6 @@ IonBuilder::storeUnboxedValue(MDefinition* obj, MDefinition* elements, int32_t e
}
bool
-IonBuilder::setPropTryUnboxed(bool* emitted, MDefinition* obj,
- PropertyName* name, MDefinition* value,
- bool barrier, TemporaryTypeSet* objTypes)
-{
- MOZ_ASSERT(*emitted == false);
-
- if (barrier) {
- trackOptimizationOutcome(TrackedOutcome::NeedsTypeBarrier);
- return true;
- }
-
- JSValueType unboxedType;
- uint32_t offset = getUnboxedOffset(obj->resultTypeSet(), name, &unboxedType);
- if (offset == UINT32_MAX)
- return true;
-
- if (obj->type() != MIRType::Object) {
- MGuardObject* guard = MGuardObject::New(alloc(), obj);
- current->add(guard);
- obj = guard;
- }
-
- MInstruction* store = storeUnboxedProperty(obj, offset, unboxedType, value);
-
- current->push(value);
-
- if (!resumeAfter(store))
- return false;
-
- *emitted = true;
- return true;
-}
-
-bool
IonBuilder::setPropTryInlineAccess(bool* emitted, MDefinition* obj,
PropertyName* name, MDefinition* value,
bool barrier, TemporaryTypeSet* objTypes)
@@ -13146,15 +12965,12 @@ IonBuilder::setPropTryInlineAccess(bool* emitted, MDefinition* obj,
}
BaselineInspector::ReceiverVector receivers(alloc());
- BaselineInspector::ObjectGroupVector convertUnboxedGroups(alloc());
- if (!inspector->maybeInfoForPropertyOp(pc, receivers, convertUnboxedGroups))
+ if (!inspector->maybeInfoForPropertyOp(pc, receivers))
return false;
if (!canInlinePropertyOpShapes(receivers))
return true;
- obj = convertUnboxedObjects(obj, convertUnboxedGroups);
-
if (receivers.length() == 1) {
if (!receivers[0].group) {
// Monomorphic store to a native object.
@@ -13174,46 +12990,6 @@ IonBuilder::setPropTryInlineAccess(bool* emitted, MDefinition* obj,
return true;
}
- if (receivers[0].shape) {
- // Monomorphic store to an unboxed object expando.
- spew("Inlining monomorphic unboxed expando SETPROP");
-
- obj = addGroupGuard(obj, receivers[0].group, Bailout_ShapeGuard);
- obj = addUnboxedExpandoGuard(obj, /* hasExpando = */ true, Bailout_ShapeGuard);
-
- MInstruction* expando = MLoadUnboxedExpando::New(alloc(), obj);
- current->add(expando);
-
- expando = addShapeGuard(expando, receivers[0].shape, Bailout_ShapeGuard);
-
- Shape* shape = receivers[0].shape->searchLinear(NameToId(name));
- MOZ_ASSERT(shape);
-
- bool needsBarrier = objTypes->propertyNeedsBarrier(constraints(), NameToId(name));
- if (!storeSlot(expando, shape, value, needsBarrier))
- return false;
-
- trackOptimizationOutcome(TrackedOutcome::Monomorphic);
- *emitted = true;
- return true;
- }
-
- // Monomorphic store to an unboxed object.
- spew("Inlining monomorphic unboxed SETPROP");
-
- ObjectGroup* group = receivers[0].group;
- if (!objTypes->hasType(TypeSet::ObjectType(group)))
- return true;
-
- obj = addGroupGuard(obj, group, Bailout_ShapeGuard);
-
- const UnboxedLayout::Property* property = group->unboxedLayout().lookup(name);
- storeUnboxedProperty(obj, property->offset, property->type, value);
-
- current->push(value);
-
- trackOptimizationOutcome(TrackedOutcome::Monomorphic);
- *emitted = true;
return true;
}
@@ -13884,7 +13660,7 @@ IonBuilder::jsop_setaliasedvar(EnvironmentCoordinate ec)
bool
IonBuilder::jsop_in()
{
- MDefinition* obj = convertUnboxedObjects(current->pop());
+ MDefinition* obj = current->pop();
MDefinition* id = current->pop();
bool emitted = false;
@@ -14241,19 +14017,6 @@ IonBuilder::addGroupGuard(MDefinition* obj, ObjectGroup* group, BailoutKind bail
}
MInstruction*
-IonBuilder::addUnboxedExpandoGuard(MDefinition* obj, bool hasExpando, BailoutKind bailoutKind)
-{
- MGuardUnboxedExpando* guard = MGuardUnboxedExpando::New(alloc(), obj, hasExpando, bailoutKind);
- current->add(guard);
-
- // If a shape guard failed in the past, don't optimize group guards.
- if (failedShapeGuard_)
- guard->setNotMovable();
-
- return guard;
-}
-
-MInstruction*
IonBuilder::addGuardReceiverPolymorphic(MDefinition* obj,
const BaselineInspector::ReceiverVector& receivers)
{
@@ -14262,15 +14025,6 @@ IonBuilder::addGuardReceiverPolymorphic(MDefinition* obj,
// Monomorphic guard on a native object.
return addShapeGuard(obj, receivers[0].shape, Bailout_ShapeGuard);
}
-
- if (!receivers[0].shape) {
- // Guard on an unboxed object that does not have an expando.
- obj = addGroupGuard(obj, receivers[0].group, Bailout_ShapeGuard);
- return addUnboxedExpandoGuard(obj, /* hasExpando = */ false, Bailout_ShapeGuard);
- }
-
- // Monomorphic receiver guards are not yet supported when the receiver
- // is an unboxed object with an expando.
}
MGuardReceiverPolymorphic* guard = MGuardReceiverPolymorphic::New(alloc(), obj);
diff --git a/js/src/jit/IonBuilder.h b/js/src/jit/IonBuilder.h
index f24ef30c8..77528ad37 100644
--- a/js/src/jit/IonBuilder.h
+++ b/js/src/jit/IonBuilder.h
@@ -401,7 +401,6 @@ class IonBuilder
MInstruction* addBoundsCheck(MDefinition* index, MDefinition* length);
MInstruction* addShapeGuard(MDefinition* obj, Shape* const shape, BailoutKind bailoutKind);
MInstruction* addGroupGuard(MDefinition* obj, ObjectGroup* group, BailoutKind bailoutKind);
- MInstruction* addUnboxedExpandoGuard(MDefinition* obj, bool hasExpando, BailoutKind bailoutKind);
MInstruction* addSharedTypedArrayGuard(MDefinition* obj);
MInstruction*
@@ -441,8 +440,6 @@ class IonBuilder
BarrierKind barrier, TemporaryTypeSet* types);
MOZ_MUST_USE bool getPropTryModuleNamespace(bool* emitted, MDefinition* obj, PropertyName* name,
BarrierKind barrier, TemporaryTypeSet* types);
- MOZ_MUST_USE bool getPropTryUnboxed(bool* emitted, MDefinition* obj, PropertyName* name,
- BarrierKind barrier, TemporaryTypeSet* types);
MOZ_MUST_USE bool getPropTryCommonGetter(bool* emitted, MDefinition* obj, PropertyName* name,
TemporaryTypeSet* types);
MOZ_MUST_USE bool getPropTryInlineAccess(bool* emitted, MDefinition* obj, PropertyName* name,
@@ -475,9 +472,6 @@ class IonBuilder
MOZ_MUST_USE bool setPropTryDefiniteSlot(bool* emitted, MDefinition* obj,
PropertyName* name, MDefinition* value,
bool barrier, TemporaryTypeSet* objTypes);
- MOZ_MUST_USE bool setPropTryUnboxed(bool* emitted, MDefinition* obj,
- PropertyName* name, MDefinition* value,
- bool barrier, TemporaryTypeSet* objTypes);
MOZ_MUST_USE bool setPropTryInlineAccess(bool* emitted, MDefinition* obj,
PropertyName* name, MDefinition* value,
bool barrier, TemporaryTypeSet* objTypes);
@@ -1041,7 +1035,6 @@ class IonBuilder
MDefinition*
addShapeGuardsForGetterSetter(MDefinition* obj, JSObject* holder, Shape* holderShape,
const BaselineInspector::ReceiverVector& receivers,
- const BaselineInspector::ObjectGroupVector& convertUnboxedGroups,
bool isOwnProperty);
MOZ_MUST_USE bool annotateGetPropertyCache(MDefinition* obj, PropertyName* name,
@@ -1059,9 +1052,6 @@ class IonBuilder
ResultWithOOM<bool> testNotDefinedProperty(MDefinition* obj, jsid id);
uint32_t getDefiniteSlot(TemporaryTypeSet* types, PropertyName* name, uint32_t* pnfixed);
- MDefinition* convertUnboxedObjects(MDefinition* obj);
- MDefinition* convertUnboxedObjects(MDefinition* obj,
- const BaselineInspector::ObjectGroupVector& list);
uint32_t getUnboxedOffset(TemporaryTypeSet* types, PropertyName* name,
JSValueType* punboxedType);
MInstruction* loadUnboxedProperty(MDefinition* obj, size_t offset, JSValueType unboxedType,
diff --git a/js/src/jit/Lowering.cpp b/js/src/jit/Lowering.cpp
index 709de9987..aafa57c09 100644
--- a/js/src/jit/Lowering.cpp
+++ b/js/src/jit/Lowering.cpp
@@ -3252,14 +3252,6 @@ LIRGenerator::visitStoreUnboxedString(MStoreUnboxedString* ins)
}
void
-LIRGenerator::visitConvertUnboxedObjectToNative(MConvertUnboxedObjectToNative* ins)
-{
- LInstruction* check = new(alloc()) LConvertUnboxedObjectToNative(useRegister(ins->object()));
- add(check, ins);
- assignSafepoint(check, ins);
-}
-
-void
LIRGenerator::visitEffectiveAddress(MEffectiveAddress* ins)
{
define(new(alloc()) LEffectiveAddress(useRegister(ins->base()), useRegister(ins->index())), ins);
@@ -3777,24 +3769,6 @@ LIRGenerator::visitGuardReceiverPolymorphic(MGuardReceiverPolymorphic* ins)
}
void
-LIRGenerator::visitGuardUnboxedExpando(MGuardUnboxedExpando* ins)
-{
- LGuardUnboxedExpando* guard =
- new(alloc()) LGuardUnboxedExpando(useRegister(ins->object()));
- assignSnapshot(guard, ins->bailoutKind());
- add(guard, ins);
- redefine(ins, ins->object());
-}
-
-void
-LIRGenerator::visitLoadUnboxedExpando(MLoadUnboxedExpando* ins)
-{
- LLoadUnboxedExpando* lir =
- new(alloc()) LLoadUnboxedExpando(useRegisterAtStart(ins->object()));
- define(lir, ins);
-}
-
-void
LIRGenerator::visitAssertRange(MAssertRange* ins)
{
MDefinition* input = ins->input();
diff --git a/js/src/jit/Lowering.h b/js/src/jit/Lowering.h
index 9b4095aec..e36620bce 100644
--- a/js/src/jit/Lowering.h
+++ b/js/src/jit/Lowering.h
@@ -232,7 +232,6 @@ class LIRGenerator : public LIRGeneratorSpecific
void visitFallibleStoreElement(MFallibleStoreElement* ins);
void visitStoreUnboxedObjectOrNull(MStoreUnboxedObjectOrNull* ins);
void visitStoreUnboxedString(MStoreUnboxedString* ins);
- void visitConvertUnboxedObjectToNative(MConvertUnboxedObjectToNative* ins);
void visitEffectiveAddress(MEffectiveAddress* ins);
void visitArrayPopShift(MArrayPopShift* ins);
void visitArrayPush(MArrayPush* ins);
@@ -256,8 +255,6 @@ class LIRGenerator : public LIRGeneratorSpecific
void visitGuardObject(MGuardObject* ins);
void visitGuardString(MGuardString* ins);
void visitGuardReceiverPolymorphic(MGuardReceiverPolymorphic* ins);
- void visitGuardUnboxedExpando(MGuardUnboxedExpando* ins);
- void visitLoadUnboxedExpando(MLoadUnboxedExpando* ins);
void visitPolyInlineGuard(MPolyInlineGuard* ins);
void visitAssertRange(MAssertRange* ins);
void visitCallGetProperty(MCallGetProperty* ins);
diff --git a/js/src/jit/MCallOptimize.cpp b/js/src/jit/MCallOptimize.cpp
index 01755094a..41ccd0ca7 100644
--- a/js/src/jit/MCallOptimize.cpp
+++ b/js/src/jit/MCallOptimize.cpp
@@ -615,7 +615,7 @@ IonBuilder::inlineArrayPopShift(CallInfo& callInfo, MArrayPopShift::Mode mode)
OBJECT_FLAG_LENGTH_OVERFLOW |
OBJECT_FLAG_ITERATED;
- MDefinition* obj = convertUnboxedObjects(callInfo.thisArg());
+ MDefinition* obj = callInfo.thisArg();
TemporaryTypeSet* thisTypes = obj->resultTypeSet();
if (!thisTypes)
return InliningStatus_NotInlined;
@@ -743,7 +743,7 @@ IonBuilder::inlineArrayPush(CallInfo& callInfo)
return InliningStatus_NotInlined;
}
- MDefinition* obj = convertUnboxedObjects(callInfo.thisArg());
+ MDefinition* obj = callInfo.thisArg();
MDefinition* value = callInfo.getArg(0);
if (PropertyWriteNeedsTypeBarrier(alloc(), constraints(), current,
&obj, nullptr, &value, /* canModify = */ false))
@@ -822,7 +822,7 @@ IonBuilder::inlineArraySlice(CallInfo& callInfo)
return InliningStatus_NotInlined;
}
- MDefinition* obj = convertUnboxedObjects(callInfo.thisArg());
+ MDefinition* obj = callInfo.thisArg();
// Ensure |this| and result are objects.
if (getInlineReturnType() != MIRType::Object)
@@ -2152,7 +2152,7 @@ IonBuilder::inlineDefineDataProperty(CallInfo& callInfo)
if (callInfo.argc() != 3)
return InliningStatus_NotInlined;
- MDefinition* obj = convertUnboxedObjects(callInfo.getArg(0));
+ MDefinition* obj = callInfo.getArg(0);
MDefinition* id = callInfo.getArg(1);
MDefinition* value = callInfo.getArg(2);
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;
}
diff --git a/js/src/jit/MIR.h b/js/src/jit/MIR.h
index fb0f22fc3..3e0421789 100644
--- a/js/src/jit/MIR.h
+++ b/js/src/jit/MIR.h
@@ -30,7 +30,6 @@
#include "vm/EnvironmentObject.h"
#include "vm/SharedMem.h"
#include "vm/TypedArrayCommon.h"
-#include "vm/UnboxedObject.h"
// Undo windows.h damage on Win64
#undef MemoryBarrier
@@ -9742,59 +9741,6 @@ class MStoreUnboxedString
ALLOW_CLONE(MStoreUnboxedString)
};
-// Passes through an object, after ensuring it is converted from an unboxed
-// object to a native representation.
-class MConvertUnboxedObjectToNative
- : public MUnaryInstruction,
- public SingleObjectPolicy::Data
-{
- CompilerObjectGroup group_;
-
- explicit MConvertUnboxedObjectToNative(MDefinition* obj, ObjectGroup* group)
- : MUnaryInstruction(obj),
- group_(group)
- {
- setGuard();
- setMovable();
- setResultType(MIRType::Object);
- }
-
- public:
- INSTRUCTION_HEADER(ConvertUnboxedObjectToNative)
- NAMED_OPERANDS((0, object))
-
- static MConvertUnboxedObjectToNative* New(TempAllocator& alloc, MDefinition* obj,
- ObjectGroup* group);
-
- ObjectGroup* group() const {
- return group_;
- }
- bool congruentTo(const MDefinition* ins) const override {
- if (!congruentIfOperandsEqual(ins))
- return false;
- return ins->toConvertUnboxedObjectToNative()->group() == group();
- }
- AliasSet getAliasSet() const override {
- // This instruction can read and write to all parts of the object, but
- // is marked as non-effectful so it can be consolidated by LICM and GVN
- // and avoid inhibiting other optimizations.
- //
- // This is valid to do because when unboxed objects might have a native
- // group they can be converted to, we do not optimize accesses to the
- // unboxed objects and do not guard on their group or shape (other than
- // in this opcode).
- //
- // Later accesses can assume the object has a native representation
- // and optimize accordingly. Those accesses cannot be reordered before
- // this instruction, however. This is prevented by chaining this
- // instruction with the object itself, in the same way as MBoundsCheck.
- return AliasSet::None();
- }
- bool appendRoots(MRootList& roots) const override {
- return roots.append(group_);
- }
-};
-
// Array.prototype.pop or Array.prototype.shift on a dense array.
class MArrayPopShift
: public MUnaryInstruction,
@@ -11174,11 +11120,6 @@ class MGuardShape
setMovable();
setResultType(MIRType::Object);
setResultTypeSet(obj->resultTypeSet());
-
- // Disallow guarding on unboxed object shapes. The group is better to
- // guard on, and guarding on the shape can interact badly with
- // MConvertUnboxedObjectToNative.
- MOZ_ASSERT(shape->getObjectClass() != &UnboxedPlainObject::class_);
}
public:
@@ -11273,11 +11214,6 @@ class MGuardObjectGroup
setGuard();
setMovable();
setResultType(MIRType::Object);
-
- // Unboxed groups which might be converted to natives can't be guarded
- // on, due to MConvertUnboxedObjectToNative.
- MOZ_ASSERT_IF(group->maybeUnboxedLayoutDontCheckGeneration(),
- !group->unboxedLayoutDontCheckGeneration().nativeGroup());
}
public:
@@ -11386,73 +11322,6 @@ class MGuardClass
ALLOW_CLONE(MGuardClass)
};
-// Guard on the presence or absence of an unboxed object's expando.
-class MGuardUnboxedExpando
- : public MUnaryInstruction,
- public SingleObjectPolicy::Data
-{
- bool requireExpando_;
- BailoutKind bailoutKind_;
-
- MGuardUnboxedExpando(MDefinition* obj, bool requireExpando, BailoutKind bailoutKind)
- : MUnaryInstruction(obj),
- requireExpando_(requireExpando),
- bailoutKind_(bailoutKind)
- {
- setGuard();
- setMovable();
- setResultType(MIRType::Object);
- }
-
- public:
- INSTRUCTION_HEADER(GuardUnboxedExpando)
- TRIVIAL_NEW_WRAPPERS
- NAMED_OPERANDS((0, object))
-
- bool requireExpando() const {
- return requireExpando_;
- }
- BailoutKind bailoutKind() const {
- return bailoutKind_;
- }
- bool congruentTo(const MDefinition* ins) const override {
- if (!congruentIfOperandsEqual(ins))
- return false;
- if (requireExpando() != ins->toGuardUnboxedExpando()->requireExpando())
- return false;
- return true;
- }
- AliasSet getAliasSet() const override {
- return AliasSet::Load(AliasSet::ObjectFields);
- }
-};
-
-// Load an unboxed plain object's expando.
-class MLoadUnboxedExpando
- : public MUnaryInstruction,
- public SingleObjectPolicy::Data
-{
- private:
- explicit MLoadUnboxedExpando(MDefinition* object)
- : MUnaryInstruction(object)
- {
- setResultType(MIRType::Object);
- setMovable();
- }
-
- public:
- INSTRUCTION_HEADER(LoadUnboxedExpando)
- 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);
- }
-};
-
// Load from vp[slot] (slots that are not inline in an object).
class MLoadSlot
: public MUnaryInstruction,
diff --git a/js/src/jit/MOpcodes.h b/js/src/jit/MOpcodes.h
index fddc1e637..b80d1baf9 100644
--- a/js/src/jit/MOpcodes.h
+++ b/js/src/jit/MOpcodes.h
@@ -187,8 +187,6 @@ namespace jit {
_(GuardObjectGroup) \
_(GuardObjectIdentity) \
_(GuardClass) \
- _(GuardUnboxedExpando) \
- _(LoadUnboxedExpando) \
_(ArrayLength) \
_(SetArrayLength) \
_(GetNextEntryForIterator) \
@@ -219,7 +217,6 @@ namespace jit {
_(StoreUnboxedScalar) \
_(StoreUnboxedObjectOrNull) \
_(StoreUnboxedString) \
- _(ConvertUnboxedObjectToNative) \
_(ArrayPopShift) \
_(ArrayPush) \
_(ArraySlice) \
diff --git a/js/src/jit/OptimizationTracking.cpp b/js/src/jit/OptimizationTracking.cpp
index 308def041..b42634d43 100644
--- a/js/src/jit/OptimizationTracking.cpp
+++ b/js/src/jit/OptimizationTracking.cpp
@@ -15,9 +15,11 @@
#include "jit/JitcodeMap.h"
#include "jit/JitSpewer.h"
#include "js/TrackedOptimizationInfo.h"
+#include "vm/UnboxedObject.h"
#include "vm/ObjectGroup-inl.h"
#include "vm/TypeInference-inl.h"
+#include "vm/UnboxedObject-inl.h"
using namespace js;
using namespace js::jit;
diff --git a/js/src/jit/ScalarReplacement.cpp b/js/src/jit/ScalarReplacement.cpp
index 4614b2162..2065c0371 100644
--- a/js/src/jit/ScalarReplacement.cpp
+++ b/js/src/jit/ScalarReplacement.cpp
@@ -13,7 +13,6 @@
#include "jit/MIR.h"
#include "jit/MIRGenerator.h"
#include "jit/MIRGraph.h"
-#include "vm/UnboxedObject.h"
#include "jsobjinlines.h"
@@ -183,25 +182,6 @@ IsObjectEscaped(MInstruction* ins, JSObject* objDefault)
JitSpewDef(JitSpew_Escape, "is escaped by\n", def);
return true;
- case MDefinition::Op_LoadUnboxedScalar:
- case MDefinition::Op_StoreUnboxedScalar:
- case MDefinition::Op_LoadUnboxedObjectOrNull:
- case MDefinition::Op_StoreUnboxedObjectOrNull:
- case MDefinition::Op_LoadUnboxedString:
- case MDefinition::Op_StoreUnboxedString:
- // Not escaped if it is the first argument.
- if (def->indexOf(*i) != 0) {
- JitSpewDef(JitSpew_Escape, "is escaped by\n", def);
- return true;
- }
-
- if (!def->getOperand(1)->isConstant()) {
- JitSpewDef(JitSpew_Escape, "is addressed with unknown index\n", def);
- return true;
- }
-
- break;
-
case MDefinition::Op_PostWriteBarrier:
break;
@@ -305,12 +285,6 @@ class ObjectMemoryView : public MDefinitionVisitorDefaultNoop
void visitGuardShape(MGuardShape* ins);
void visitFunctionEnvironment(MFunctionEnvironment* ins);
void visitLambda(MLambda* ins);
- void visitStoreUnboxedScalar(MStoreUnboxedScalar* ins);
- void visitLoadUnboxedScalar(MLoadUnboxedScalar* ins);
- void visitStoreUnboxedObjectOrNull(MStoreUnboxedObjectOrNull* ins);
- void visitLoadUnboxedObjectOrNull(MLoadUnboxedObjectOrNull* ins);
- void visitStoreUnboxedString(MStoreUnboxedString* ins);
- void visitLoadUnboxedString(MLoadUnboxedString* ins);
private:
void storeOffset(MInstruction* ins, size_t offset, MDefinition* value);
@@ -656,21 +630,6 @@ ObjectMemoryView::visitLambda(MLambda* ins)
ins->setIncompleteObject();
}
-static size_t
-GetOffsetOf(MDefinition* index, size_t width, int32_t baseOffset)
-{
- int32_t idx = index->toConstant()->toInt32();
- MOZ_ASSERT(idx >= 0);
- MOZ_ASSERT(baseOffset >= 0 && size_t(baseOffset) >= UnboxedPlainObject::offsetOfData());
- return idx * width + baseOffset - UnboxedPlainObject::offsetOfData();
-}
-
-static size_t
-GetOffsetOf(MDefinition* index, Scalar::Type type, int32_t baseOffset)
-{
- return GetOffsetOf(index, Scalar::byteSize(type), baseOffset);
-}
-
void
ObjectMemoryView::storeOffset(MInstruction* ins, size_t offset, MDefinition* value)
{
@@ -700,77 +659,6 @@ ObjectMemoryView::loadOffset(MInstruction* ins, size_t offset)
ins->block()->discard(ins);
}
-void
-ObjectMemoryView::visitStoreUnboxedScalar(MStoreUnboxedScalar* ins)
-{
- // Skip stores made on other objects.
- if (ins->elements() != obj_)
- return;
-
- size_t offset = GetOffsetOf(ins->index(), ins->storageType(), ins->offsetAdjustment());
- storeOffset(ins, offset, ins->value());
-}
-
-void
-ObjectMemoryView::visitLoadUnboxedScalar(MLoadUnboxedScalar* ins)
-{
- // Skip loads made on other objects.
- if (ins->elements() != obj_)
- return;
-
- // Replace load by the slot value.
- size_t offset = GetOffsetOf(ins->index(), ins->storageType(), ins->offsetAdjustment());
- loadOffset(ins, offset);
-}
-
-void
-ObjectMemoryView::visitStoreUnboxedObjectOrNull(MStoreUnboxedObjectOrNull* ins)
-{
- // Skip stores made on other objects.
- if (ins->elements() != obj_)
- return;
-
- // Clone the state and update the slot value.
- size_t offset = GetOffsetOf(ins->index(), sizeof(uintptr_t), ins->offsetAdjustment());
- storeOffset(ins, offset, ins->value());
-}
-
-void
-ObjectMemoryView::visitLoadUnboxedObjectOrNull(MLoadUnboxedObjectOrNull* ins)
-{
- // Skip loads made on other objects.
- if (ins->elements() != obj_)
- return;
-
- // Replace load by the slot value.
- size_t offset = GetOffsetOf(ins->index(), sizeof(uintptr_t), ins->offsetAdjustment());
- loadOffset(ins, offset);
-}
-
-void
-ObjectMemoryView::visitStoreUnboxedString(MStoreUnboxedString* ins)
-{
- // Skip stores made on other objects.
- if (ins->elements() != obj_)
- return;
-
- // Clone the state and update the slot value.
- size_t offset = GetOffsetOf(ins->index(), sizeof(uintptr_t), ins->offsetAdjustment());
- storeOffset(ins, offset, ins->value());
-}
-
-void
-ObjectMemoryView::visitLoadUnboxedString(MLoadUnboxedString* ins)
-{
- // Skip loads made on other objects.
- if (ins->elements() != obj_)
- return;
-
- // Replace load by the slot value.
- size_t offset = GetOffsetOf(ins->index(), sizeof(uintptr_t), ins->offsetAdjustment());
- loadOffset(ins, offset);
-}
-
static bool
IndexOf(MDefinition* ins, int32_t* res)
{
diff --git a/js/src/jit/SharedIC.cpp b/js/src/jit/SharedIC.cpp
index 767cff661..2475dfb22 100644
--- a/js/src/jit/SharedIC.cpp
+++ b/js/src/jit/SharedIC.cpp
@@ -27,6 +27,7 @@
#endif
#include "jit/VMFunctions.h"
#include "vm/Interpreter.h"
+#include "vm/NativeObject-inl.h"
#include "jit/MacroAssembler-inl.h"
#include "vm/Interpreter-inl.h"
diff --git a/js/src/jit/shared/LIR-shared.h b/js/src/jit/shared/LIR-shared.h
index f4adcc63c..f386d5256 100644
--- a/js/src/jit/shared/LIR-shared.h
+++ b/js/src/jit/shared/LIR-shared.h
@@ -5891,22 +5891,6 @@ class LStoreUnboxedPointer : public LInstructionHelper<0, 3, 0>
}
};
-// If necessary, convert an unboxed object in a particular group to its native
-// representation.
-class LConvertUnboxedObjectToNative : public LInstructionHelper<0, 1, 0>
-{
- public:
- LIR_HEADER(ConvertUnboxedObjectToNative)
-
- explicit LConvertUnboxedObjectToNative(const LAllocation& object) {
- setOperand(0, object);
- }
-
- MConvertUnboxedObjectToNative* mir() {
- return mir_->toConvertUnboxedObjectToNative();
- }
-};
-
class LArrayPopShiftV : public LInstructionHelper<BOX_PIECES, 1, 2>
{
public:
@@ -7429,38 +7413,6 @@ class LGuardReceiverPolymorphic : public LInstructionHelper<0, 1, 1>
}
};
-class LGuardUnboxedExpando : public LInstructionHelper<0, 1, 0>
-{
- public:
- LIR_HEADER(GuardUnboxedExpando)
-
- explicit LGuardUnboxedExpando(const LAllocation& in) {
- setOperand(0, in);
- }
- const LAllocation* object() {
- return getOperand(0);
- }
- const MGuardUnboxedExpando* mir() const {
- return mir_->toGuardUnboxedExpando();
- }
-};
-
-class LLoadUnboxedExpando : public LInstructionHelper<1, 1, 0>
-{
- public:
- LIR_HEADER(LoadUnboxedExpando)
-
- explicit LLoadUnboxedExpando(const LAllocation& in) {
- setOperand(0, in);
- }
- const LAllocation* object() {
- return getOperand(0);
- }
- const MLoadUnboxedExpando* mir() const {
- return mir_->toLoadUnboxedExpando();
- }
-};
-
// Guard that a value is in a TypeSet.
class LTypeBarrierV : public LInstructionHelper<0, BOX_PIECES, 1>
{
diff --git a/js/src/jit/shared/LOpcodes-shared.h b/js/src/jit/shared/LOpcodes-shared.h
index fe2ab5ea3..6912e8904 100644
--- a/js/src/jit/shared/LOpcodes-shared.h
+++ b/js/src/jit/shared/LOpcodes-shared.h
@@ -258,8 +258,6 @@
_(GuardObjectGroup) \
_(GuardObjectIdentity) \
_(GuardClass) \
- _(GuardUnboxedExpando) \
- _(LoadUnboxedExpando) \
_(TypeBarrierV) \
_(TypeBarrierO) \
_(MonitorTypes) \
@@ -287,7 +285,6 @@
_(StoreElementT) \
_(StoreUnboxedScalar) \
_(StoreUnboxedPointer) \
- _(ConvertUnboxedObjectToNative) \
_(ArrayPopShiftV) \
_(ArrayPopShiftT) \
_(ArrayPushV) \
diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index f78f94dc1..9ee29ffe4 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -6434,9 +6434,6 @@ JS_SetGlobalJitCompilerOption(JSContext* cx, JSJitCompilerOption opt, uint32_t v
}
jit::JitOptions.jumpThreshold = value;
break;
- case JSJITCOMPILER_UNBOXED_OBJECTS:
- jit::JitOptions.disableUnboxedObjects = !value;
- break;
case JSJITCOMPILER_ASMJS_ATOMICS_ENABLE:
jit::JitOptions.asmJSAtomicsEnable = !!value;
break;
diff --git a/js/src/jsapi.h b/js/src/jsapi.h
index 1f726f2e5..005d2278e 100644
--- a/js/src/jsapi.h
+++ b/js/src/jsapi.h
@@ -5783,20 +5783,19 @@ JS_SetParallelParsingEnabled(JSContext* cx, bool enabled);
extern JS_PUBLIC_API(void)
JS_SetOffthreadIonCompilationEnabled(JSContext* cx, bool enabled);
-#define JIT_COMPILER_OPTIONS(Register) \
- Register(BASELINE_WARMUP_TRIGGER, "baseline.warmup.trigger") \
- Register(ION_WARMUP_TRIGGER, "ion.warmup.trigger") \
- Register(ION_GVN_ENABLE, "ion.gvn.enable") \
- Register(ION_FORCE_IC, "ion.forceinlineCaches") \
- Register(ION_ENABLE, "ion.enable") \
+#define JIT_COMPILER_OPTIONS(Register) \
+ Register(BASELINE_WARMUP_TRIGGER, "baseline.warmup.trigger") \
+ Register(ION_WARMUP_TRIGGER, "ion.warmup.trigger") \
+ Register(ION_GVN_ENABLE, "ion.gvn.enable") \
+ Register(ION_FORCE_IC, "ion.forceinlineCaches") \
+ Register(ION_ENABLE, "ion.enable") \
Register(ION_INTERRUPT_WITHOUT_SIGNAL, "ion.interrupt-without-signals") \
- Register(ION_CHECK_RANGE_ANALYSIS, "ion.check-range-analysis") \
- Register(BASELINE_ENABLE, "baseline.enable") \
- Register(OFFTHREAD_COMPILATION_ENABLE, "offthread-compilation.enable") \
- Register(JUMP_THRESHOLD, "jump-threshold") \
- Register(UNBOXED_OBJECTS, "unboxed_objects") \
- Register(ASMJS_ATOMICS_ENABLE, "asmjs.atomics.enable") \
- Register(WASM_TEST_MODE, "wasm.test-mode") \
+ Register(ION_CHECK_RANGE_ANALYSIS, "ion.check-range-analysis") \
+ Register(BASELINE_ENABLE, "baseline.enable") \
+ Register(OFFTHREAD_COMPILATION_ENABLE, "offthread-compilation.enable") \
+ Register(JUMP_THRESHOLD, "jump-threshold") \
+ Register(ASMJS_ATOMICS_ENABLE, "asmjs.atomics.enable") \
+ Register(WASM_TEST_MODE, "wasm.test-mode") \
Register(WASM_FOLD_OFFSETS, "wasm.fold-offsets")
typedef enum JSJitCompilerOption {
diff --git a/js/src/jsgc.cpp b/js/src/jsgc.cpp
index 194468c5d..b2ee8d67b 100644
--- a/js/src/jsgc.cpp
+++ b/js/src/jsgc.cpp
@@ -6190,12 +6190,6 @@ gc::MergeCompartments(JSCompartment* source, JSCompartment* target)
for (auto group = source->zone()->cellIter<ObjectGroup>(); !group.done(); group.next()) {
group->setGeneration(target->zone()->types.generation);
group->compartment_ = target;
-
- // Remove any unboxed layouts from the list in the off thread
- // compartment. These do not need to be reinserted in the target
- // compartment's list, as the list is not required to be complete.
- if (UnboxedLayout* layout = group->maybeUnboxedLayoutDontCheckGeneration())
- layout->detachFromCompartment();
}
// Fixup zone pointers in source's zone to refer to target's zone.
diff --git a/js/src/jsiter.cpp b/js/src/jsiter.cpp
index c1ae5dc15..004c7fc0d 100644
--- a/js/src/jsiter.cpp
+++ b/js/src/jsiter.cpp
@@ -157,8 +157,11 @@ SortComparatorIntegerIds(jsid a, jsid b, bool* lessOrEqualp)
}
static bool
-EnumerateNativeProperties(JSContext* cx, HandleNativeObject pobj, unsigned flags, Maybe<IdSet>& ht,
- AutoIdVector* props, Handle<UnboxedPlainObject*> unboxed = nullptr)
+EnumerateNativeProperties(JSContext* cx,
+ HandleNativeObject pobj,
+ unsigned flags,
+ Maybe<IdSet>& ht,
+ AutoIdVector* props)
{
bool enumerateSymbols;
if (flags & JSITER_SYMBOLSONLY) {
@@ -220,16 +223,6 @@ EnumerateNativeProperties(JSContext* cx, HandleNativeObject pobj, unsigned flags
return false;
}
- if (unboxed) {
- // If |unboxed| is set then |pobj| is the expando for an unboxed
- // plain object we are enumerating. Add the unboxed properties
- // themselves here since they are all property names that were
- // given to the object before any of the expando's properties.
- MOZ_ASSERT(pobj->is<UnboxedExpandoObject>());
- if (!EnumerateExtraProperties(cx, unboxed, flags, ht, props))
- return false;
- }
-
size_t initialLength = props->length();
/* Collect all unique property names from this object's shape. */
@@ -355,22 +348,12 @@ Snapshot(JSContext* cx, HandleObject pobj_, unsigned flags, AutoIdVector* props)
do {
if (pobj->getOpsEnumerate()) {
- if (pobj->is<UnboxedPlainObject>() && pobj->as<UnboxedPlainObject>().maybeExpando()) {
- // Special case unboxed objects with an expando object.
- RootedNativeObject expando(cx, pobj->as<UnboxedPlainObject>().maybeExpando());
- if (!EnumerateNativeProperties(cx, expando, flags, ht, props,
- pobj.as<UnboxedPlainObject>()))
- {
- return false;
- }
- } else {
- if (!EnumerateExtraProperties(cx, pobj, flags, ht, props))
- return false;
+ if (!EnumerateExtraProperties(cx, pobj, flags, ht, props))
+ return false;
- if (pobj->isNative()) {
- if (!EnumerateNativeProperties(cx, pobj.as<NativeObject>(), flags, ht, props))
- return false;
- }
+ if (pobj->isNative()) {
+ if (!EnumerateNativeProperties(cx, pobj.as<NativeObject>(), flags, ht, props))
+ return false;
}
} else if (pobj->isNative()) {
// Give the object a chance to resolve all lazy properties
@@ -785,11 +768,6 @@ CanCompareIterableObjectToCache(JSObject* obj)
{
if (obj->isNative())
return obj->as<NativeObject>().hasEmptyElements();
- if (obj->is<UnboxedPlainObject>()) {
- if (UnboxedExpandoObject* expando = obj->as<UnboxedPlainObject>().maybeExpando())
- return expando->hasEmptyElements();
- return true;
- }
return false;
}
diff --git a/js/src/jsobj.cpp b/js/src/jsobj.cpp
index b17c845bb..f22ecb445 100644
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -54,6 +54,7 @@
#include "vm/RegExpStaticsObject.h"
#include "vm/Shape.h"
#include "vm/TypedArrayCommon.h"
+#include "vm/UnboxedObject-inl.h"
#include "jsatominlines.h"
#include "jsboolinlines.h"
@@ -869,9 +870,6 @@ static inline JSObject*
CreateThisForFunctionWithGroup(JSContext* cx, HandleObjectGroup group,
NewObjectKind newKind)
{
- if (group->maybeUnboxedLayout() && newKind != SingletonObject)
- return UnboxedPlainObject::create(cx, group, newKind);
-
if (TypeNewScript* newScript = group->newScript()) {
if (newScript->analyzed()) {
// The definite properties analysis has been performed for this
@@ -1166,46 +1164,27 @@ static bool
GetScriptPlainObjectProperties(JSContext* cx, HandleObject obj,
MutableHandle<IdValueVector> properties)
{
- if (obj->is<PlainObject>()) {
- PlainObject* nobj = &obj->as<PlainObject>();
-
- if (!properties.appendN(IdValuePair(), nobj->slotSpan()))
- return false;
+ MOZ_ASSERT(obj->is<PlainObject>());
+ PlainObject* nobj = &obj->as<PlainObject>();
- for (Shape::Range<NoGC> r(nobj->lastProperty()); !r.empty(); r.popFront()) {
- Shape& shape = r.front();
- MOZ_ASSERT(shape.isDataDescriptor());
- uint32_t slot = shape.slot();
- properties[slot].get().id = shape.propid();
- properties[slot].get().value = nobj->getSlot(slot);
- }
-
- for (size_t i = 0; i < nobj->getDenseInitializedLength(); i++) {
- Value v = nobj->getDenseElement(i);
- if (!v.isMagic(JS_ELEMENTS_HOLE) && !properties.append(IdValuePair(INT_TO_JSID(i), v)))
- return false;
- }
+ if (!properties.appendN(IdValuePair(), nobj->slotSpan()))
+ return false;
- return true;
+ for (Shape::Range<NoGC> r(nobj->lastProperty()); !r.empty(); r.popFront()) {
+ Shape& shape = r.front();
+ MOZ_ASSERT(shape.isDataDescriptor());
+ uint32_t slot = shape.slot();
+ properties[slot].get().id = shape.propid();
+ properties[slot].get().value = nobj->getSlot(slot);
}
- if (obj->is<UnboxedPlainObject>()) {
- UnboxedPlainObject* nobj = &obj->as<UnboxedPlainObject>();
-
- const UnboxedLayout& layout = nobj->layout();
- if (!properties.appendN(IdValuePair(), layout.properties().length()))
+ for (size_t i = 0; i < nobj->getDenseInitializedLength(); i++) {
+ Value v = nobj->getDenseElement(i);
+ if (!v.isMagic(JS_ELEMENTS_HOLE) && !properties.append(IdValuePair(INT_TO_JSID(i), v)))
return false;
-
- for (size_t i = 0; i < layout.properties().length(); i++) {
- const UnboxedLayout::Property& property = layout.properties()[i];
- properties[i].get().id = NameToId(property.name);
- properties[i].get().value = nobj->getValue(property);
- }
-
- return true;
}
- MOZ_CRASH("Bad object kind");
+ return true;
}
static bool
@@ -1227,8 +1206,9 @@ js::DeepCloneObjectLiteral(JSContext* cx, HandleObject obj, NewObjectKind newKin
/* NB: Keep this in sync with XDRObjectLiteral. */
MOZ_ASSERT_IF(obj->isSingleton(),
cx->compartment()->behaviors().getSingletonsAsTemplates());
- MOZ_ASSERT(obj->is<PlainObject>() || obj->is<UnboxedPlainObject>() ||
- obj->is<ArrayObject>() || obj->is<UnboxedArrayObject>());
+ MOZ_ASSERT(obj->is<PlainObject>() ||
+ obj->is<ArrayObject>() ||
+ obj->is<UnboxedArrayObject>());
MOZ_ASSERT(newKind != SingletonObject);
if (obj->is<ArrayObject>() || obj->is<UnboxedArrayObject>()) {
@@ -1347,7 +1327,6 @@ js::XDRObjectLiteral(XDRState<mode>* xdr, MutableHandleObject obj)
{
if (mode == XDR_ENCODE) {
MOZ_ASSERT(obj->is<PlainObject>() ||
- obj->is<UnboxedPlainObject>() ||
obj->is<ArrayObject>() ||
obj->is<UnboxedArrayObject>());
isArray = (obj->is<ArrayObject>() || obj->is<UnboxedArrayObject>()) ? 1 : 0;
@@ -2333,11 +2312,6 @@ js::LookupOwnPropertyPure(ExclusiveContext* cx, JSObject* obj, jsid id, Shape**
// us the resolve hook won't define a property with this id.
if (ClassMayResolveId(cx->names(), obj->getClass(), id, obj))
return false;
- } else if (obj->is<UnboxedPlainObject>()) {
- if (obj->as<UnboxedPlainObject>().containsUnboxedOrExpandoProperty(cx, id)) {
- MarkNonNativePropertyFound<NoGC>(propp);
- return true;
- }
} else if (obj->is<UnboxedArrayObject>()) {
if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
MarkNonNativePropertyFound<NoGC>(propp);
@@ -2590,11 +2564,6 @@ js::SetPrototype(JSContext* cx, HandleObject obj, HandleObject proto, JS::Object
break;
}
- // Convert unboxed objects to their native representations before changing
- // their prototype/group, as they depend on the group for their layout.
- if (!MaybeConvertUnboxedObjectToNative(cx, obj))
- return false;
-
Rooted<TaggedProto> taggedProto(cx, TaggedProto(proto));
if (!SetClassAndProto(cx, obj, obj->getClass(), taggedProto))
return false;
@@ -2618,9 +2587,6 @@ js::PreventExtensions(JSContext* cx, HandleObject obj, ObjectOpResult& result, I
if (!obj->nonProxyIsExtensible())
return result.succeed();
- if (!MaybeConvertUnboxedObjectToNative(cx, obj))
- return false;
-
// Force lazy properties to be resolved.
AutoIdVector props(cx);
if (!js::GetPropertyKeys(cx, obj, JSITER_HIDDEN | JSITER_OWNONLY, &props))
@@ -3714,12 +3680,6 @@ JSObject::allocKindForTenure(const js::Nursery& nursery) const
if (IsProxy(this))
return as<ProxyObject>().allocKindForTenure();
- // Unboxed plain objects are sized according to the data they store.
- if (is<UnboxedPlainObject>()) {
- size_t nbytes = as<UnboxedPlainObject>().layoutDontCheckGeneration().size();
- return GetGCObjectKindForBytes(UnboxedPlainObject::offsetOfData() + nbytes);
- }
-
// Unboxed arrays use inline data if their size is small enough.
if (is<UnboxedArrayObject>()) {
const UnboxedArrayObject* nobj = &as<UnboxedArrayObject>();
diff --git a/js/src/shell/js.cpp b/js/src/shell/js.cpp
index 8d144417a..193d8d22b 100644
--- a/js/src/shell/js.cpp
+++ b/js/src/shell/js.cpp
@@ -7276,9 +7276,6 @@ SetContextOptions(JSContext* cx, const OptionParser& op)
if (op.getBoolOption("wasm-check-bce"))
jit::JitOptions.wasmAlwaysCheckBounds = true;
- if (op.getBoolOption("no-unboxed-objects"))
- jit::JitOptions.disableUnboxedObjects = true;
-
if (const char* str = op.getStringOption("cache-ir-stubs")) {
if (strcmp(str, "on") == 0)
jit::JitOptions.disableCacheIR = false;
diff --git a/js/src/vm/Interpreter-inl.h b/js/src/vm/Interpreter-inl.h
index 5f476c4ff..710f1d89b 100644
--- a/js/src/vm/Interpreter-inl.h
+++ b/js/src/vm/Interpreter-inl.h
@@ -22,7 +22,6 @@
#include "vm/EnvironmentObject-inl.h"
#include "vm/Stack-inl.h"
#include "vm/String-inl.h"
-#include "vm/UnboxedObject-inl.h"
namespace js {
@@ -337,14 +336,10 @@ InitGlobalLexicalOperation(JSContext* cx, LexicalEnvironmentObject* lexicalEnvAr
inline bool
InitPropertyOperation(JSContext* cx, JSOp op, HandleObject obj, HandleId id, HandleValue rhs)
{
- if (obj->is<PlainObject>() || obj->is<JSFunction>()) {
- unsigned propAttrs = GetInitDataPropAttrs(op);
- return NativeDefineProperty(cx, obj.as<NativeObject>(), id, rhs, nullptr, nullptr,
- propAttrs);
- }
-
- MOZ_ASSERT(obj->as<UnboxedPlainObject>().layout().lookup(id));
- return PutProperty(cx, obj, id, rhs, false);
+ MOZ_ASSERT(obj->is<PlainObject>() || obj->is<JSFunction>());
+ unsigned propAttrs = GetInitDataPropAttrs(op);
+ return NativeDefineProperty(cx, obj.as<NativeObject>(), id, rhs,
+ nullptr, nullptr, propAttrs);
}
inline bool
diff --git a/js/src/vm/Interpreter.cpp b/js/src/vm/Interpreter.cpp
index e6d6630c4..3cf2deb83 100644
--- a/js/src/vm/Interpreter.cpp
+++ b/js/src/vm/Interpreter.cpp
@@ -4111,7 +4111,7 @@ CASE(JSOP_INITHOMEOBJECT)
/* Load the home object */
ReservedRooted<JSObject*> obj(&rootObject0);
obj = &REGS.sp[int(-2 - skipOver)].toObject();
- MOZ_ASSERT(obj->is<PlainObject>() || obj->is<UnboxedPlainObject>() || obj->is<JSFunction>());
+ MOZ_ASSERT(obj->is<PlainObject>() || obj->is<JSFunction>());
func->setExtendedSlot(FunctionExtended::METHOD_HOMEOBJECT_SLOT, ObjectValue(*obj));
}
@@ -4927,15 +4927,10 @@ js::NewObjectOperation(JSContext* cx, HandleScript script, jsbytecode* pc,
return nullptr;
if (group->maybePreliminaryObjects()) {
group->maybePreliminaryObjects()->maybeAnalyze(cx, group);
- if (group->maybeUnboxedLayout())
- group->maybeUnboxedLayout()->setAllocationSite(script, pc);
}
if (group->shouldPreTenure() || group->maybePreliminaryObjects())
newKind = TenuredObject;
-
- if (group->maybeUnboxedLayout())
- return UnboxedPlainObject::create(cx, group, newKind);
}
RootedObject obj(cx);
diff --git a/js/src/vm/ReceiverGuard.cpp b/js/src/vm/ReceiverGuard.cpp
index 97df908c3..11c2d0727 100644
--- a/js/src/vm/ReceiverGuard.cpp
+++ b/js/src/vm/ReceiverGuard.cpp
@@ -7,7 +7,6 @@
#include "vm/ReceiverGuard.h"
#include "builtin/TypedObject.h"
-#include "vm/UnboxedObject.h"
#include "jsobjinlines.h"
using namespace js;
diff --git a/js/src/vm/ReceiverGuard.h b/js/src/vm/ReceiverGuard.h
index 459cc0012..c14f0d83b 100644
--- a/js/src/vm/ReceiverGuard.h
+++ b/js/src/vm/ReceiverGuard.h
@@ -28,11 +28,6 @@ namespace js {
// TypedObject: The structure of a typed object is determined by its group.
// All typed objects with the same group have the same class, prototype, and
// own properties.
-//
-// UnboxedPlainObject: The structure of an unboxed plain object is determined
-// by its group and its expando object's shape, if there is one. All unboxed
-// plain objects with the same group and expando shape have the same
-// properties except those stored in the expando's dense elements.
class HeapReceiverGuard;
class RootedReceiverGuard;
diff --git a/js/src/vm/TypeInference.cpp b/js/src/vm/TypeInference.cpp
index 4775a2dea..9e0342382 100644
--- a/js/src/vm/TypeInference.cpp
+++ b/js/src/vm/TypeInference.cpp
@@ -1995,17 +1995,6 @@ TypeSet::ObjectKey::watchStateChangeForTypedArrayData(CompilerConstraintList* co
ConstraintDataFreezeObjectForTypedArrayData(tarray)));
}
-void
-TypeSet::ObjectKey::watchStateChangeForUnboxedConvertedToNative(CompilerConstraintList* constraints)
-{
- HeapTypeSetKey objectProperty = property(JSID_EMPTY);
- LifoAlloc* alloc = constraints->alloc();
-
- typedef CompilerConstraintInstance<ConstraintDataFreezeObjectForUnboxedConvertedToNative> T;
- constraints->add(alloc->new_<T>(alloc, objectProperty,
- ConstraintDataFreezeObjectForUnboxedConvertedToNative()));
-}
-
static void
ObjectStateChange(ExclusiveContext* cxArg, ObjectGroup* group, bool markingUnknown)
{
@@ -3577,7 +3566,6 @@ PreliminaryObjectArrayWithTemplate::maybeAnalyze(ExclusiveContext* cx, ObjectGro
}
}
- TryConvertToUnboxedLayout(cx, enter, shape(), group, preliminaryObjects);
if (group->maybeUnboxedLayout())
return;
@@ -3861,10 +3849,6 @@ TypeNewScript::maybeAnalyze(JSContext* cx, ObjectGroup* group, bool* regenerate,
PodCopy(initializerList, initializerVector.begin(), initializerVector.length());
}
- // Try to use an unboxed representation for the group.
- if (!TryConvertToUnboxedLayout(cx, enter, templateObject()->lastProperty(), group, preliminaryObjects))
- return false;
-
js_delete(preliminaryObjects);
preliminaryObjects = nullptr;
diff --git a/js/src/vm/TypeInference.h b/js/src/vm/TypeInference.h
index 0f1cd4936..04fed448c 100644
--- a/js/src/vm/TypeInference.h
+++ b/js/src/vm/TypeInference.h
@@ -262,7 +262,6 @@ class TypeSet
bool hasStableClassAndProto(CompilerConstraintList* constraints);
void watchStateChangeForInlinedCall(CompilerConstraintList* constraints);
void watchStateChangeForTypedArrayData(CompilerConstraintList* constraints);
- void watchStateChangeForUnboxedConvertedToNative(CompilerConstraintList* constraints);
HeapTypeSetKey property(jsid id);
void ensureTrackedProperty(JSContext* cx, jsid id);
diff --git a/js/src/vm/UnboxedObject.cpp b/js/src/vm/UnboxedObject.cpp
index 3018ace67..d7ad91de4 100644
--- a/js/src/vm/UnboxedObject.cpp
+++ b/js/src/vm/UnboxedObject.cpp
@@ -1655,227 +1655,12 @@ const Class UnboxedArrayObject::class_ = {
// API
/////////////////////////////////////////////////////////////////////
-static bool
-UnboxedTypeIncludes(JSValueType supertype, JSValueType subtype)
-{
- if (supertype == JSVAL_TYPE_DOUBLE && subtype == JSVAL_TYPE_INT32)
- return true;
- if (supertype == JSVAL_TYPE_OBJECT && subtype == JSVAL_TYPE_NULL)
- return true;
- return false;
-}
-
-static bool
-CombineUnboxedTypes(const Value& value, JSValueType* existing)
-{
- JSValueType type = value.isDouble() ? JSVAL_TYPE_DOUBLE : value.extractNonDoubleType();
-
- if (*existing == JSVAL_TYPE_MAGIC || *existing == type || UnboxedTypeIncludes(type, *existing)) {
- *existing = type;
- return true;
- }
- if (UnboxedTypeIncludes(*existing, type))
- return true;
- return false;
-}
-
-// Return whether the property names and types in layout are a subset of the
-// specified vector.
-static bool
-PropertiesAreSuperset(const UnboxedLayout::PropertyVector& properties, UnboxedLayout* layout)
-{
- for (size_t i = 0; i < layout->properties().length(); i++) {
- const UnboxedLayout::Property& layoutProperty = layout->properties()[i];
- bool found = false;
- for (size_t j = 0; j < properties.length(); j++) {
- if (layoutProperty.name == properties[j].name) {
- found = (layoutProperty.type == properties[j].type);
- break;
- }
- }
- if (!found)
- return false;
- }
- return true;
-}
-
-static bool
-CombinePlainObjectProperties(PlainObject* obj, Shape* templateShape,
- UnboxedLayout::PropertyVector& properties)
-{
- // All preliminary objects must have been created with enough space to
- // fill in their unboxed data inline. This is ensured either by using
- // the largest allocation kind (which limits the maximum size of an
- // unboxed object), or by using an allocation kind that covers all
- // properties in the template, as the space used by unboxed properties
- // is less than or equal to that used by boxed properties.
- MOZ_ASSERT(gc::GetGCKindSlots(obj->asTenured().getAllocKind()) >=
- Min(NativeObject::MAX_FIXED_SLOTS, templateShape->slotSpan()));
-
- if (obj->lastProperty() != templateShape || obj->hasDynamicElements()) {
- // Only use an unboxed representation if all created objects match
- // the template shape exactly.
- return false;
- }
-
- for (size_t i = 0; i < templateShape->slotSpan(); i++) {
- Value val = obj->getSlot(i);
-
- JSValueType& existing = properties[i].type;
- if (!CombineUnboxedTypes(val, &existing))
- return false;
- }
-
- return true;
-}
-
-static bool
-CombineArrayObjectElements(ExclusiveContext* cx, ArrayObject* obj, JSValueType* elementType)
-{
- if (obj->inDictionaryMode() ||
- obj->lastProperty()->propid() != AtomToId(cx->names().length) ||
- !obj->lastProperty()->previous()->isEmptyShape())
- {
- // Only use an unboxed representation if the object has no properties.
- return false;
- }
-
- for (size_t i = 0; i < obj->getDenseInitializedLength(); i++) {
- Value val = obj->getDenseElement(i);
-
- // For now, unboxed arrays cannot have holes.
- if (val.isMagic(JS_ELEMENTS_HOLE))
- return false;
-
- if (!CombineUnboxedTypes(val, elementType))
- return false;
- }
-
- return true;
-}
-
-static size_t
-ComputePlainObjectLayout(ExclusiveContext* cx, Shape* templateShape,
- UnboxedLayout::PropertyVector& properties)
-{
- // Fill in the names for all the object's properties.
- for (Shape::Range<NoGC> r(templateShape); !r.empty(); r.popFront()) {
- size_t slot = r.front().slot();
- MOZ_ASSERT(!properties[slot].name);
- properties[slot].name = JSID_TO_ATOM(r.front().propid())->asPropertyName();
- }
-
- // Fill in all the unboxed object's property offsets.
- uint32_t offset = 0;
-
- // Search for an existing unboxed layout which is a subset of this one.
- // If there are multiple such layouts, use the largest one. If we're able
- // to find such a layout, use the same property offsets for the shared
- // properties, which will allow us to generate better code if the objects
- // have a subtype/supertype relation and are accessed at common sites.
- UnboxedLayout* bestExisting = nullptr;
- for (UnboxedLayout* existing : cx->compartment()->unboxedLayouts) {
- if (PropertiesAreSuperset(properties, existing)) {
- if (!bestExisting ||
- existing->properties().length() > bestExisting->properties().length())
- {
- bestExisting = existing;
- }
- }
- }
- if (bestExisting) {
- for (size_t i = 0; i < bestExisting->properties().length(); i++) {
- const UnboxedLayout::Property& existingProperty = bestExisting->properties()[i];
- for (size_t j = 0; j < templateShape->slotSpan(); j++) {
- if (existingProperty.name == properties[j].name) {
- MOZ_ASSERT(existingProperty.type == properties[j].type);
- properties[j].offset = existingProperty.offset;
- }
- }
- }
- offset = bestExisting->size();
- }
-
- // Order remaining properties from the largest down for the best space
- // utilization.
- static const size_t typeSizes[] = { 8, 4, 1 };
-
- for (size_t i = 0; i < ArrayLength(typeSizes); i++) {
- size_t size = typeSizes[i];
- for (size_t j = 0; j < templateShape->slotSpan(); j++) {
- if (properties[j].offset != UINT32_MAX)
- continue;
- JSValueType type = properties[j].type;
- if (UnboxedTypeSize(type) == size) {
- offset = JS_ROUNDUP(offset, size);
- properties[j].offset = offset;
- offset += size;
- }
- }
- }
-
- // The final offset is the amount of data needed by the object.
- return offset;
-}
-
-static bool
-SetLayoutTraceList(ExclusiveContext* cx, UnboxedLayout* layout)
-{
- // Figure out the offsets of any objects or string properties.
- Vector<int32_t, 8, SystemAllocPolicy> objectOffsets, stringOffsets;
- for (size_t i = 0; i < layout->properties().length(); i++) {
- const UnboxedLayout::Property& property = layout->properties()[i];
- MOZ_ASSERT(property.offset != UINT32_MAX);
- if (property.type == JSVAL_TYPE_OBJECT) {
- if (!objectOffsets.append(property.offset))
- return false;
- } else if (property.type == JSVAL_TYPE_STRING) {
- if (!stringOffsets.append(property.offset))
- return false;
- }
- }
-
- // Construct the layout's trace list.
- if (!objectOffsets.empty() || !stringOffsets.empty()) {
- Vector<int32_t, 8, SystemAllocPolicy> entries;
- if (!entries.appendAll(stringOffsets) ||
- !entries.append(-1) ||
- !entries.appendAll(objectOffsets) ||
- !entries.append(-1) ||
- !entries.append(-1))
- {
- return false;
- }
- int32_t* traceList = cx->zone()->pod_malloc<int32_t>(entries.length());
- if (!traceList)
- return false;
- PodCopy(traceList, entries.begin(), entries.length());
- layout->setTraceList(traceList);
- }
-
- return true;
-}
-
static inline Value
NextValue(Handle<GCVector<Value>> values, size_t* valueCursor)
{
return values[(*valueCursor)++];
}
-static bool
-GetValuesFromPreliminaryArrayObject(ArrayObject* obj, MutableHandle<GCVector<Value>> values)
-{
- if (!values.append(Int32Value(obj->length())))
- return false;
- if (!values.append(Int32Value(obj->getDenseInitializedLength())))
- return false;
- for (size_t i = 0; i < obj->getDenseInitializedLength(); i++) {
- if (!values.append(obj->getDenseElement(i)))
- return false;
- }
- return true;
-}
-
void
UnboxedArrayObject::fillAfterConvert(ExclusiveContext* cx,
Handle<GCVector<Value>> values, size_t* valueCursor)
@@ -1901,16 +1686,6 @@ UnboxedArrayObject::fillAfterConvert(ExclusiveContext* cx,
JS_ALWAYS_TRUE(initElement(cx, i, NextValue(values, valueCursor)));
}
-static bool
-GetValuesFromPreliminaryPlainObject(PlainObject* obj, MutableHandle<GCVector<Value>> values)
-{
- for (size_t i = 0; i < obj->slotSpan(); i++) {
- if (!values.append(obj->getSlot(i)))
- return false;
- }
- return true;
-}
-
void
UnboxedPlainObject::fillAfterConvert(ExclusiveContext* cx,
Handle<GCVector<Value>> values, size_t* valueCursor)
@@ -1921,181 +1696,6 @@ UnboxedPlainObject::fillAfterConvert(ExclusiveContext* cx,
JS_ALWAYS_TRUE(setValue(cx, layout().properties()[i], NextValue(values, valueCursor)));
}
-bool
-js::TryConvertToUnboxedLayout(ExclusiveContext* cx, AutoEnterAnalysis& enter, Shape* templateShape,
- ObjectGroup* group, PreliminaryObjectArray* objects)
-{
- bool isArray = !templateShape;
-
- // Unboxed arrays are nightly only for now. The getenv() call will be
- // removed when they are on by default. See bug 1153266.
- if (isArray) {
-#ifdef NIGHTLY_BUILD
- if (!getenv("JS_OPTION_USE_UNBOXED_ARRAYS")) {
- if (!cx->options().unboxedArrays())
- return true;
- }
-#else
- return true;
-#endif
- } else {
- if (jit::JitOptions.disableUnboxedObjects)
- return true;
- }
-
- MOZ_ASSERT_IF(templateShape, !templateShape->getObjectFlags());
-
- if (group->runtimeFromAnyThread()->isSelfHostingGlobal(cx->global()))
- return true;
-
- if (!isArray && templateShape->slotSpan() == 0)
- return true;
-
- UnboxedLayout::PropertyVector properties;
- if (!isArray) {
- if (!properties.appendN(UnboxedLayout::Property(), templateShape->slotSpan()))
- return false;
- }
- JSValueType elementType = JSVAL_TYPE_MAGIC;
-
- size_t objectCount = 0;
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- JSObject* obj = objects->get(i);
- if (!obj)
- continue;
-
- if (obj->isSingleton() || obj->group() != group)
- return true;
-
- objectCount++;
-
- if (isArray) {
- if (!CombineArrayObjectElements(cx, &obj->as<ArrayObject>(), &elementType))
- return true;
- } else {
- if (!CombinePlainObjectProperties(&obj->as<PlainObject>(), templateShape, properties))
- return true;
- }
- }
-
- size_t layoutSize = 0;
- if (isArray) {
- // Don't use an unboxed representation if we couldn't determine an
- // element type for the objects.
- if (UnboxedTypeSize(elementType) == 0)
- return true;
- } else {
- if (objectCount <= 1) {
- // If only one of the objects has been created, it is more likely
- // to have new properties added later. This heuristic is not used
- // for array objects, where we might want an unboxed representation
- // even if there is only one large array.
- return true;
- }
-
- for (size_t i = 0; i < templateShape->slotSpan(); i++) {
- // We can't use an unboxed representation if e.g. all the objects have
- // a null value for one of the properties, as we can't decide what type
- // it is supposed to have.
- if (UnboxedTypeSize(properties[i].type) == 0)
- return true;
- }
-
- // Make sure that all properties on the template shape are property
- // names, and not indexes.
- for (Shape::Range<NoGC> r(templateShape); !r.empty(); r.popFront()) {
- jsid id = r.front().propid();
- uint32_t dummy;
- if (!JSID_IS_ATOM(id) || JSID_TO_ATOM(id)->isIndex(&dummy))
- return true;
- }
-
- layoutSize = ComputePlainObjectLayout(cx, templateShape, properties);
-
- // The entire object must be allocatable inline.
- if (UnboxedPlainObject::offsetOfData() + layoutSize > JSObject::MAX_BYTE_SIZE)
- return true;
- }
-
- UniquePtr<UnboxedLayout>& layout = enter.unboxedLayoutToCleanUp;
- MOZ_ASSERT(!layout);
- layout = group->zone()->make_unique<UnboxedLayout>();
- if (!layout)
- return false;
-
- if (isArray) {
- layout->initArray(elementType);
- } else {
- if (!layout->initProperties(properties, layoutSize))
- return false;
-
- // The unboxedLayouts list only tracks layouts for plain objects.
- cx->compartment()->unboxedLayouts.insertFront(layout.get());
-
- if (!SetLayoutTraceList(cx, layout.get()))
- return false;
- }
-
- // We've determined that all the preliminary objects can use the new layout
- // just constructed, so convert the existing group to use the unboxed class,
- // and update the preliminary objects to use the new layout. Do the
- // fallible stuff first before modifying any objects.
-
- // Get an empty shape which we can use for the preliminary objects.
- const Class* clasp = isArray ? &UnboxedArrayObject::class_ : &UnboxedPlainObject::class_;
- Shape* newShape = EmptyShape::getInitialShape(cx, clasp, group->proto(), 0);
- if (!newShape) {
- cx->recoverFromOutOfMemory();
- return false;
- }
-
- // Accumulate a list of all the values in each preliminary object, and
- // update their shapes.
- Rooted<GCVector<Value>> values(cx, GCVector<Value>(cx));
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- JSObject* obj = objects->get(i);
- if (!obj)
- continue;
-
- bool ok;
- if (isArray)
- ok = GetValuesFromPreliminaryArrayObject(&obj->as<ArrayObject>(), &values);
- else
- ok = GetValuesFromPreliminaryPlainObject(&obj->as<PlainObject>(), &values);
-
- if (!ok) {
- cx->recoverFromOutOfMemory();
- return false;
- }
- }
-
- if (TypeNewScript* newScript = group->newScript())
- layout->setNewScript(newScript);
-
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- if (JSObject* obj = objects->get(i))
- obj->as<NativeObject>().setLastPropertyMakeNonNative(newShape);
- }
-
- group->setClasp(clasp);
- group->setUnboxedLayout(layout.release());
-
- size_t valueCursor = 0;
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- JSObject* obj = objects->get(i);
- if (!obj)
- continue;
-
- if (isArray)
- obj->as<UnboxedArrayObject>().fillAfterConvert(cx, values, &valueCursor);
- else
- obj->as<UnboxedPlainObject>().fillAfterConvert(cx, values, &valueCursor);
- }
-
- MOZ_ASSERT(valueCursor == values.length());
- return true;
-}
-
DefineBoxedOrUnboxedFunctor6(SetOrExtendBoxedOrUnboxedDenseElements,
ExclusiveContext*, JSObject*, uint32_t, const Value*, uint32_t,
ShouldUpdateTypes);
diff --git a/js/src/vm/UnboxedObject.h b/js/src/vm/UnboxedObject.h
index ecff8be5b..779dd14c7 100644
--- a/js/src/vm/UnboxedObject.h
+++ b/js/src/vm/UnboxedObject.h
@@ -317,13 +317,6 @@ class UnboxedPlainObject : public JSObject
}
};
-// Try to construct an UnboxedLayout for each of the preliminary objects,
-// provided they all match the template shape. If successful, converts the
-// preliminary objects and their group to the new unboxed representation.
-bool
-TryConvertToUnboxedLayout(ExclusiveContext* cx, AutoEnterAnalysis& enter, Shape* templateShape,
- ObjectGroup* group, PreliminaryObjectArray* objects);
-
inline gc::AllocKind
UnboxedLayout::getAllocKind() const
{
diff --git a/js/xpconnect/src/XPCJSContext.cpp b/js/xpconnect/src/XPCJSContext.cpp
index bde949a96..0243d80e3 100644
--- a/js/xpconnect/src/XPCJSContext.cpp
+++ b/js/xpconnect/src/XPCJSContext.cpp
@@ -1427,8 +1427,6 @@ ReloadPrefsCallback(const char* pref, void* data)
bool extraWarnings = Preferences::GetBool(JS_OPTIONS_DOT_STR "strict");
- bool unboxedObjects = Preferences::GetBool(JS_OPTIONS_DOT_STR "unboxed_objects");
-
sSharedMemoryEnabled = Preferences::GetBool(JS_OPTIONS_DOT_STR "shared_memory");
#ifdef DEBUG
@@ -1457,8 +1455,6 @@ ReloadPrefsCallback(const char* pref, void* data)
useBaselineEager ? 0 : -1);
JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_ION_WARMUP_TRIGGER,
useIonEager ? 0 : -1);
- JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_UNBOXED_OBJECTS,
- unboxedObjects);
}
XPCJSContext::~XPCJSContext()
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 56dbba31e..123436ebd 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -1264,7 +1264,6 @@ pref("javascript.options.strict", false);
#ifdef DEBUG
pref("javascript.options.strict.debug", false);
#endif
-pref("javascript.options.unboxed_objects", false);
pref("javascript.options.baselinejit", true);
pref("javascript.options.ion", true);
pref("javascript.options.asmjs", true);