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LibJS: Add basic monomorphic caching for PutById property access

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This patch makes it possible for JS::Object::internal_set() to populate
a CacheablePropertyMetadata, and uses this to implement a basic
monomorphic cache for the most common form of property write access.
This commit is contained in:
Andreas Kling
2023-11-08 20:51:26 +01:00
parent 28118623f5
commit b1b2ca1485
28 changed files with 99 additions and 54 deletions
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6
Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
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@@ -811,7 +811,8 @@ ThrowCompletionOr<void> PutById::execute_impl(Bytecode::Interpreter& interpreter
auto value = interpreter.accumulator();
auto base = interpreter.reg(m_base);
PropertyKey name = interpreter.current_executable().get_identifier(m_property);
TRY(put_by_property_key(vm, base, base, value, name, m_kind));
auto& cache = interpreter.current_executable().property_lookup_caches[m_cache_index];
TRY(put_by_property_key(vm, base, base, value, name, m_kind, &cache));
interpreter.accumulator() = value;
return {};
}
@@ -823,7 +824,8 @@ ThrowCompletionOr<void> PutByIdWithThis::execute_impl(Bytecode::Interpreter& int
auto value = interpreter.accumulator();
auto base = interpreter.reg(m_base);
PropertyKey name = interpreter.current_executable().get_identifier(m_property);
TRY(put_by_property_key(vm, base, interpreter.reg(m_this_value), value, name, m_kind));
auto& cache = interpreter.current_executable().property_lookup_caches[m_cache_index];
TRY(put_by_property_key(vm, base, interpreter.reg(m_this_value), value, name, m_kind, &cache));
interpreter.accumulator() = value;
return {};
}