`o is T` where `T` is an interface implemented by a class hierarchy
can be implemented as `o instanceof R` where `R` is the root of the
hierarchy. The common case is that `R` is a single implementation
class.
`is Record` and `is Type` now generally use `instanceof`.
Fixes: #51366
Change-Id: I1943533bc53024f3199f71910034d49cf6661b22
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/294320
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Mayank Patke <fishythefish@google.com>
This annotation prevents inlining at call sites within the method that
is annotated.
The main expected use is to control inlining in unit tests.
Change-Id: Ib6652f0b4cb7a34c6bf829b1be5c09e241ffbde2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/248345
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Late fields start out holding a sentinel value and after they are initialized or assigned, never hold a sentinel value again.
This CL implements some removal of checks and loads based on this monotonic behaviour.
On two large Dart Angular apps, this reduces the number of late-instance-field checks by ~25%.
One app is 0.44% smaller, the other is 0.98% smaller.
The optimization_test.dart no longer forces `--disable-inlining` because that prevents the inlining that exposes the optimization opportunities.
Most tests already use `@pragma('dart2js:noInline')` to prevent inlining where relevant.
Change-Id: I2327a96e69191313ed6c07eabe94aa2962fb2648
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/246881
Reviewed-by: Joshua Litt <joshualitt@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
JSDouble represents doubles that are not integers. It is usually wrong
to use JSDouble, so use JSNumber instead where we mean 'all double
values'.
This fixes#44818 by not mistakenly pretending that division cannot
have an integral result.
Will follow up with a CL to rename JSDouble.
Fixed: 44818
Change-Id: Ic324df2ee1f2c7434bc0b064c0dbd7b6800ad93b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/183360
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Stephen Adams