| commit | a289c4d84870d9d403307535d281f2f8fc79c2f5 | [log] [tgz] |
|---|---|---|
| author | Ömer Sinan Ağacan <omersa@google.com> | Wed Apr 05 07:40:39 2023 +0000 |
| committer | Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> | Wed Apr 05 07:40:39 2023 +0000 |
| tree | 10af5356daf21438840dd1afcb1f0f6c34d48214 | |
| parent | 87ccb4012c89aff1d443de9520e2a2145b0180f5 [diff] |
[dart2wasm] Fix runtime type tests
emitTypeTest optimizes a test like `x is List<T>` where `x :
Iterable<T>`, i.e. tested-against type is a subtype of the operand's
static type. In these cases we can check just the class ID of the
operand without checking the type arguments.
However this optimization cannot be done when the types don't have same
number of type arguments. Example:
class H1<T> {}
bool test(Object o) {
return o is H1<num>;
}
void main() {
print(test(H1<Object>()));
}
Here `H1<num> <: Object`, but we still need to check the type parameter.
This CL checks that the types have the same number of type arguments
before optimizing the test.
Fixes #51187.
This fix reveals another bug in `static_interop_test`, which is tracked
in #51200. The test is updated to work around the bug for now.
New passing tests:
- co19/LanguageFeatures/Patterns/matching_cast_A01_t01
- co19/LanguageFeatures/Patterns/matching_list_A01_t01
- co19/LanguageFeatures/Patterns/matching_list_A01_t02
- co19/LanguageFeatures/Patterns/matching_object_A01_t01
- co19/LanguageFeatures/Patterns/matching_object_A01_t02
- co19/LanguageFeatures/Patterns/record_A01_t03
- co19/LanguageFeatures/Patterns/record_A01_t06
- co19/LanguageFeatures/Patterns/record_A01_t07
- co19/LanguageFeatures/Patterns/record_A01_t08
- co19/LanguageFeatures/Patterns/record_A01_t09
- language/generic/deep_test
- language/generic_methods/type_expression_test
- language/patterns/object_pattern_inference_test
Change-Id: Ibd9615666b7f7538c2a3f03fb7f5ebe9b16c3d54
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/292881
Reviewed-by: Joshua Litt <joshualitt@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>
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