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[compiler] Perform FindFieldOwner concurrently through Refs

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Also, enable concurrent GetBackPointer().

Bug: v8:7790
Change-Id: If92cb7cdd9e6f5eb9a636764ca8abe2fc2c05ab2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2650205
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72483}
This commit is contained in:
Santiago Aboy Solanes 2021-02-01 19:42:00 +00:00 committed by Commit Bot
parent 26653f894c
commit be3a6690bd
1 changed files with 7 additions and 6 deletions
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13
src/compiler/js-heap-broker.cc
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@ -3181,11 +3181,12 @@ bool MapRef::IsPrimitiveMap() const {
}
MapRef MapRef::FindFieldOwner(InternalIndex descriptor_index) const {
if (data_->should_access_heap()) {
Handle<Map> owner(
object()->FindFieldOwner(broker()->isolate(), descriptor_index),
broker()->isolate());
return MapRef(broker(), owner);
if (data_->should_access_heap() || FLAG_turbo_direct_heap_access) {
// TODO(solanes, v8:7790): Consider caching the result of the field owner on
// the descriptor array. It would be useful for same map as well as any
// other map sharing that descriptor array.
return MapRef(broker(), broker()->GetOrCreateData(object()->FindFieldOwner(
broker()->isolate(), descriptor_index)));
}
DescriptorArrayData* descriptors =
data()->AsMap()->instance_descriptors()->AsDescriptorArray();
@ -3476,7 +3477,7 @@ BIMODAL_ACCESSOR_C(Map, int, UnusedPropertyFields)
BIMODAL_ACCESSOR(Map, HeapObject, prototype)
BIMODAL_ACCESSOR_C(Map, InstanceType, instance_type)
BIMODAL_ACCESSOR(Map, Object, GetConstructor)
BIMODAL_ACCESSOR(Map, HeapObject, GetBackPointer)
BIMODAL_ACCESSOR_WITH_FLAG(Map, HeapObject, GetBackPointer)
BIMODAL_ACCESSOR_C(Map, bool, is_abandoned_prototype_map)
BIMODAL_ACCESSOR_C(Code, unsigned, inlined_bytecode_size)