Bug 190800

Because we need to view contiguous int64_t* / uint64_t* memory region via this view, the storage should be just byte sequence. And [] access should wrap the result with JSBigInt when it is accessed from JS world.

This would be nice to have for that: https://github.com/takahirox/riscv-rust/issues/115

We also have the requirement for BigUint64Array in WebGPU: https://github.com/gpuweb/gpuweb/issues/866

Generally it would be helpful for all projects using wasm_bindgen (https://github.com/rustwasm/wasm-bindgen), so also for the jsapi of the rav1e (https://github.com/xiph/rav1e/tree/master/rav1e_js).

Echoing the previous comment, lack of BigUint64Array support means that applications using wasm-bindgen cannot run at all in Safari. This is especially problematic for targeting the iPad.

Created attachment 418810 [details] Patch

Created attachment 418811 [details] Patch

Created attachment 418812 [details] Patch

Created attachment 418813 [details] Patch

Created attachment 418814 [details] Patch

Created attachment 418821 [details] Patch

Comment on attachment 418821 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=418821&action=review r=me, this is awesome! > Source/JavaScriptCore/runtime/AtomicsObject.h:65 > +JSArrayBufferView* validateTypedArray(JSGlobalObject*, JSValue); This seems kind of weird? AtomicsObject.cpp needs to include JSArrayBufferView.h anyway, doesn't it? > Source/JavaScriptCore/runtime/JSGenericTypedArrayView.h:98 > + using Adaptor = PassedAdaptor; What's the purpose of this alias? > Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h:462 > + if constexpr (Adaptor::canConvertToJSQuickly) Cool! > JSTests/test262/expectations.yaml:831 > +test/built-ins/TypedArray/prototype/filter/BigInt/callbackfn-detachbuffer.js: > + default: 'TypeError: Invalid argument type in ToBigInt operation (Testing with BigInt64Array.)' > + strict mode: 'TypeError: Invalid argument type in ToBigInt operation (Testing with BigInt64Array.)' > +test/built-ins/TypedArray/prototype/findIndex/BigInt/predicate-may-detach-buffer.js: > + default: 'Test262Error: throws a TypeError getting a value from the detached buffer Expected a TypeError to be thrown but no exception was thrown at all (Testing with BigInt64Array.)' > + strict mode: 'Test262Error: throws a TypeError getting a value from the detached buffer Expected a TypeError to be thrown but no exception was thrown at all (Testing with BigInt64Array.)' Do you want to submit the patch for these or would you prefer that I do it?

Comment on attachment 418821 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=418821&action=review >> Source/JavaScriptCore/runtime/AtomicsObject.h:65 >> +JSArrayBufferView* validateTypedArray(JSGlobalObject*, JSValue); > > This seems kind of weird? AtomicsObject.cpp needs to include JSArrayBufferView.h anyway, doesn't it? Right! I'll remove it. >> Source/JavaScriptCore/runtime/JSGenericTypedArrayView.h:98 >> + using Adaptor = PassedAdaptor; > > What's the purpose of this alias? Because we would like to access ViewClass::Adaptor. >> JSTests/test262/expectations.yaml:831 >> + strict mode: 'Test262Error: throws a TypeError getting a value from the detached buffer Expected a TypeError to be thrown but no exception was thrown at all (Testing with BigInt64Array.)' > > Do you want to submit the patch for these or would you prefer that I do it? I'll quickly do that after landing this patch :)

Committed r272170: <https://trac.webkit.org/changeset/272170>

<rdar://problem/73842238>