Ömer Sinan Ağacan f78759775e Reland "[dart2wasm] Use DataView in JS typed arrays" ... This is a reland of commit b9b7de14e0 Previous version broke engine tests because of incorrect array impl class (e.g. `JSUint16ArrayImpl`) to JS array externref conversion. Since array implementation classes now store an `externref` to a `DataView`, we can't use `toExternRef`, we need to use the new `toJSArrayExternRef`. Original change's description: > [dart2wasm] Use DataView in JS typed arrays > > Refcator JS typed array classes to store JS `DataView`s (instead of JS > typed array with the matching type), and use V8's new optimized > `DataView` imports. > > Brings JS typed array class performance from unusable to reasonable > levels. In `SkeletalAnimation` benchmark: > > - Before: 1444 us. > - After: 101 us. > > Future work: > > - Make immutable classes extend the mutable ones. This will allow `[]` > calls to be always inlined in JSCM. > > - Move list mixin applications from the base class to implementation > classes. This will allow members like `elementAt`, `forEach` etc. to > have direct calls to other methods of the same class. > > - Try adding a `length` field to avoid JS calls in bounds checks. > > Change-Id: Ief6165fe9c4a825072077db820b105c4fca30dce > Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/328920 > Reviewed-by: Aske Simon Christensen <askesc@google.com> > Commit-Queue: Ömer Ağacan <omersa@google.com> Change-Id: If913aed837d09570b82b0f6dcb9553abb17fd708 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/334468 Commit-Queue: Ömer Ağacan <omersa@google.com> Reviewed-by: Aske Simon Christensen <askesc@google.com>		2023-11-09 10:23:31 +00:00
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wasm_types.dart	Reland "[dart2wasm] Use DataView in JS typed arrays"	2023-11-09 10:23:31 +00:00