| commit | 9184100327c0baf768e53ffab88816270222006a | [log] [tgz] |
|---|---|---|
| author | Ömer Sinan Ağacan <omersa@google.com> | Tue Jan 28 00:50:28 2025 -0800 |
| committer | Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> | Tue Jan 28 00:50:28 2025 -0800 |
| tree | 303c7a6fe1fa3e8a04163cb24c58074e5c15c794 | |
| parent | d9dd397c57dcef9f7659ae7075373000f2cc1ac3 [diff] |
[beta][dart2wasm,tfa] Don't infer class of string values in comparisons In dart2wasm, when a comparison like `x == "hello"` is true, we can't assume that the class of `x` is the same as the class of `"hello"`: - If `x` is received from JS, it will be `JSStringImpl`. - If it's a substring of a `TwoByteString`, it will be `TwoByteString`. - Otherwise it will be `OneByteString`. Update `Target` with the new method ``` bool get canInferStringClassAfterEqualityComparison => true; ``` to allow TFA to *not* infer classes of string values after comparisons. Override the method to return `false` in dart2wasm's `Target` implementation. Bug: https://github.com/dart-lang/sdk/issues/59901 Cherry-pick: https://dart-review.googlesource.com/c/sdk/+/404562 Cherry-pick-request: https://github.com/dart-lang/sdk/issues/59924 Change-Id: I1a6c8deaf27c54240dd4e821dbd8160914502ad7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/404842 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Ömer Ağacan <omersa@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
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