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[cleanup] Use LoadObjectMap and LoadObjectWithNullPrototypeMap helpers

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Bug: v8:10763
Change-Id: I959661854e5b138186406d4d6fda77558200d454
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402878
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69820}
This commit is contained in:
Camillo Bruni 2020-09-10 16:14:04 +02:00 committed by Commit Bot
parent 120eb38883
commit 10aa375c57
6 changed files with 22 additions and 19 deletions
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5
src/builtins/builtins-constructor-gen.cc
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@ -623,10 +623,7 @@ TNode<HeapObject> ConstructorBuiltinsAssembler::CreateShallowObjectLiteral(
TNode<JSObject> ConstructorBuiltinsAssembler::CreateEmptyObjectLiteral(
TNode<Context> context) {
TNode<NativeContext> native_context = LoadNativeContext(context);
TNode<JSFunction> object_function =
CAST(LoadContextElement(native_context, Context::OBJECT_FUNCTION_INDEX));
TNode<Map> map = LoadObjectField<Map>(
object_function, JSFunction::kPrototypeOrInitialMapOffset);
TNode<Map> map = LoadObjectMap(native_context);
// Ensure that slack tracking is disabled for the map.
STATIC_ASSERT(Map::kNoSlackTracking == 0);
CSA_ASSERT(this, IsClearWord32<Map::Bits3::ConstructionCounterBits>(

9
src/builtins/builtins-object-gen.cc
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@ -1073,8 +1073,7 @@ TF_BUILTIN(ObjectCreate, ObjectBuiltinsAssembler) {
BIND(&good);
{
map = CAST(LoadContextElement(
context, Context::SLOW_OBJECT_WITH_NULL_PROTOTYPE_MAP));
map = LoadObjectWithNullPrototypeMap(context);
properties = AllocateNameDictionary(NameDictionary::kInitialCapacity);
Goto(&instantiate_map);
}
@ -1082,11 +1081,7 @@ TF_BUILTIN(ObjectCreate, ObjectBuiltinsAssembler) {
BIND(&non_null_proto);
{
properties = EmptyFixedArrayConstant();
TNode<HeapObject> object_function =
CAST(LoadContextElement(context, Context::OBJECT_FUNCTION_INDEX));
TNode<Map> object_function_map = LoadObjectField<Map>(
object_function, JSFunction::kPrototypeOrInitialMapOffset);
map = object_function_map;
map = LoadObjectMap(context);
GotoIf(TaggedEqual(prototype, LoadMapPrototype(map.value())),
&instantiate_map);
// Try loading the prototype info.

3
src/builtins/builtins-regexp-gen.cc
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@ -284,8 +284,7 @@ TNode<JSRegExpResult> RegExpBuiltinsAssembler::ConstructNewResultFromMatchInfo(
TNode<IntPtrT> num_properties = WordSar(names_length, 1);
TNode<NativeContext> native_context = LoadNativeContext(context);
TNode<Map> map = CAST(LoadContextElement(
native_context, Context::SLOW_OBJECT_WITH_NULL_PROTOTYPE_MAP));
TNode<Map> map = LoadObjectWithNullPrototypeMap(native_context);
TNode<NameDictionary> properties =
AllocateNameDictionary(num_properties, kAllowLargeObjectAllocation);

14
src/codegen/code-stub-assembler.cc
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@ -2520,6 +2520,20 @@ TNode<Context> CodeStubAssembler::LoadModuleContext(
return UncheckedCast<Context>(cur_context.value());
}
TNode<Map> CodeStubAssembler::LoadObjectMap(TNode<Context> context) {
TNode<HeapObject> object_function =
CAST(LoadContextElement(context, Context::OBJECT_FUNCTION_INDEX));
return LoadObjectField<Map>(object_function,
JSFunction::kPrototypeOrInitialMapOffset);
}
TNode<Map> CodeStubAssembler::LoadObjectWithNullPrototypeMap(
TNode<Context> context) {
TNode<Map> map = CAST(LoadContextElement(
context, Context::SLOW_OBJECT_WITH_NULL_PROTOTYPE_MAP));
return map;
}
TNode<Map> CodeStubAssembler::LoadJSArrayElementsMap(
SloppyTNode<Int32T> kind, SloppyTNode<NativeContext> native_context) {
CSA_ASSERT(this, IsFastElementsKind(kind));

3
src/codegen/code-stub-assembler.h
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@ -1402,6 +1402,9 @@ class V8_EXPORT_PRIVATE CodeStubAssembler
if_equal);
}
TNode<Map> LoadObjectMap(TNode<Context> context);
TNode<Map> LoadObjectWithNullPrototypeMap(TNode<Context> context);
TNode<Map> LoadJSArrayElementsMap(ElementsKind kind,
SloppyTNode<NativeContext> native_context);
TNode<Map> LoadJSArrayElementsMap(SloppyTNode<Int32T> kind,

7
src/ic/accessor-assembler.cc
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@ -4065,12 +4065,7 @@ void AccessorAssembler::GenerateCloneObjectIC_Slow() {
// used.
TNode<NativeContext> native_context = LoadNativeContext(context);
TNode<JSFunction> object_fn =
CAST(LoadContextElement(native_context, Context::OBJECT_FUNCTION_INDEX));
TNode<Map> initial_map = CAST(
LoadObjectField(object_fn, JSFunction::kPrototypeOrInitialMapOffset));
CSA_ASSERT(this, IsMap(initial_map));
TNode<Map> initial_map = LoadObjectMap(native_context);
TNode<JSObject> result = AllocateJSObjectFromMap(initial_map);
{