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LibJS: Cache commonly used FlyStrings in the VM

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Roughly 7% of test-js runtime was spent creating FlyStrings from string
literals. This patch frontloads that work and caches all the commonly
used names in LibJS on a CommonPropertyNames struct that hangs off VM.
This commit is contained in:
Andreas Kling
2020-10-13 23:49:19 +02:00
parent 9f6c5f68b6
commit 7b863330dc
45 changed files with 651 additions and 392 deletions
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2
Libraries/LibJS/Runtime/JSONObject.cpp
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@@ -154,7 +154,7 @@ String JSONObject::serialize_json_property(GlobalObject& global_object, Stringif
if (vm.exception())
return {};
if (value.is_object()) {
auto to_json = value.as_object().get("toJSON");
auto to_json = value.as_object().get(vm.names.toJSON);
if (vm.exception())
return {};
if (to_json.is_function()) {