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d15da7d900
The type Map<T, Foo<Set<T>>> contains one type variable referenced twice,
so there are two inputs into the HTypeInfoExpression instruction.
If Foo is a typedef, T can be reused, e.g.
typedef E Foo<E>(E a, E b);
As the typedef is expanded (to Function(Set<T>, Set<T>) => Set<T>) it
should not consume additional types from the to-level input. We
prevent this by capturing the types and using the captured type
expressions inside the typedef expansion.
TODO: We should make the type subexpression Foo<...> be a second
HTypeInfoExpression, with Set<T> as its input (a third
HTypeInfoExpression). This would share all the Set<T> subexpressions
instead of duplicating them. This would require HTypeInfoExpression
inputs to correspond to type variables AND typedefs.
BUG= https://github.com/dart-lang/sdk/issues/28749
R=efortuna@google.com
Review-Url: https://codereview.chromium.org/2812393003 .
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| build | ||
| client | ||
| docs/language | ||
| pkg | ||
| runtime | ||
| samples | ||
| samples-dev | ||
| sdk | ||
| tests | ||
| third_party | ||
| tools | ||
| utils | ||
| .clang-format | ||
| .gitattributes | ||
| .gitignore | ||
| .gn | ||
| .mailmap | ||
| .packages | ||
| .travis.yml | ||
| AUTHORS | ||
| BUILD.gn | ||
| CHANGELOG.md | ||
| codereview.settings | ||
| create_sdk.gyp | ||
| dart.gyp | ||
| DEPS | ||
| LICENSE | ||
| PATENTS | ||
| PRESUBMIT.py | ||
| README.dart-sdk | ||
| README.md | ||
| WATCHLISTS | ||
Dart
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