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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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3
Libraries/LibJS/Runtime/VM.h
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@ -30,6 +30,7 @@
#include <AK/HashMap.h>
#include <AK/RefCounted.h>
#include <LibJS/Heap/Heap.h>
#include <LibJS/Runtime/CommonPropertyNames.h>
#include <LibJS/Runtime/ErrorTypes.h>
#include <LibJS/Runtime/Exception.h>
#include <LibJS/Runtime/MarkedValueList.h>
@ -223,6 +224,8 @@ public:
return call(function, this_value);
}
CommonPropertyNames names;
private:
VM();