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b6bc3e54d0
This CL copies and modifies hash map and set base class `_HashBase`
currently shared with the VM, to improve types of the fields.
The Wasm struct for hash map and set objects was previously:
(type $_HashBase (sub $Object (struct
(field $field0 i32)
(field $field1 (mut i32))
(field $field2 (mut (ref null $Object))) ;; _index
(field $field3 (mut i64))
(field $field4 (mut (ref $Object))) ;; _data
(field $field5 (mut i64))
(field $field6 (mut i64)))))
Now:
(type $_HashBase (sub $Object (struct
(field $field0 i32)
(field $field1 (mut i32))
(field $field2 (mut (ref $Array<WasmI32>))) ;; _index
(field $field3 (mut i64))
(field $field4 (mut (ref $Array<Object?>))) ;; _data
(field $field5 (mut i64))
(field $field6 (mut i64)))))
_index and _data fields are now non-nullable Wasm arrays. This removes
downcasts and one layer of indirection when accessing the elements. In
addition, when accessing `_index` this eliminates unboxing the integers.
Fixes #54961.
Change-Id: I4e6bd5129c7c57f5716ccb23e46060d73ffca217
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/354843
Commit-Queue: Ömer Ağacan <omersa@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
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| .. | ||
| _http | ||
| _internal | ||
| _macros | ||
| _wasm | ||
| async | ||
| cli | ||
| collection | ||
| convert | ||
| core | ||
| developer | ||
| ffi | ||
| html | ||
| indexed_db | ||
| internal | ||
| io | ||
| isolate | ||
| js | ||
| js_interop | ||
| js_interop_unsafe | ||
| js_util | ||
| math | ||
| mirrors | ||
| svg | ||
| typed_data | ||
| vmservice | ||
| web_audio | ||
| web_gl | ||
| web_sql | ||
| libraries.json | ||
| libraries.yaml | ||
| PRESUBMIT.py | ||
| vmservice_libraries.json | ||
| vmservice_libraries.yaml | ||