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8 commits

Author SHA1 Message Date
Andreas Kling
0e4450f4b3 LibJS: Avoid function call if @@hasInstance is default implementation
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This makes the instanceof operator signficantly faster by avoiding a
generic function call to @@hasInstance unless it has been overridden.

1.15x speed-up on Octane/earley-boyer.js
2025-10-13 17:15:44 +02:00
Aliaksandr Kalenik
285bc005cb LibJS: Do more comprehensive check if next() fast path is possible
Before this change each built-in iterator object has a boolean
`m_next_method_was_redefined`. If user code later changed the iterator’s
prototype (e.g. `Object.setPrototypeOf()`), we still believed the
built-in fast-path was safe and skipped the user supplied override,
producing wrong results.

With this change
`BuiltinIterator::as_builtin_iterator_if_next_is_not_redefined()` looks
up the current `next` property and verifies that it is still the
built-in native function.
2025-06-02 00:15:36 +02:00
Aliaksandr Kalenik
1647d7b34c LibJS: Use CallBuiltin for Math.tan() 2025-05-26 21:52:43 +02:00
Aliaksandr Kalenik
878cc16d7a LibJS: Use CallBuiltin for Math.cos() 2025-05-26 21:52:43 +02:00
Aliaksandr Kalenik
c02535e9f9 LibJS: Use CallBuiltin for Math.sin()
Improves performance on https://pierre.co/
2025-05-26 21:52:43 +02:00
Andreas Kling
ec590ef3e6 LibJS: Add builtin for Math.random() 2025-04-03 13:56:39 +02:00
Andreas Kling
714e8aec8a LibJS: Add builtin for Math.imul() 2025-04-03 13:56:39 +02:00
Timothy Flynn
93712b24bf Everywhere: Hoist the Libraries folder to the top-level 2024-11-10 12:50:45 +01:00
Renamed from Userland/Libraries/LibJS/Bytecode/Builtins.h (Browse further)