Similar to dart2js --trust-primitives, with --omit-bounds-checks
(implied by -O4) we omit bounds checks in standard library list and
typed array indexing methods, such as `operator []` and `[]=`.
For now this flag does not omit range checks in functions like
`setRange` and `setAll`:
- Functions like `setRange` do more work than functions like `[]` and
`[]=`, and bounds checks are a smaller part of the whole operation.
- For the same reason, and also because they either don't return any
values or have to return boxed (i.e. `getRange` needs to return an
`Iterator`), inlining them is not as crucial as inlining an
`Uint8List.[]` implementation (which avoids boxing when inlined).
Closes#54962.
Tested: dart2wasm change with small refactoring in VM, tested with existing tests.
Change-Id: Idd5f11ee85c7e67ba8de621b305c413e7e7f7ebb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/353982
Reviewed-by: Martin Kustermann <kustermann@google.com>