DirectPropertyGet is a statically bound instance access used in the
VM mixin tranformation to encode fully resolved super access. The
access to `this.name` generated in `toString` of an enum is _not_
a statically bound instance access but just a regular instance access
whose runtime target happens to be known statically because the code
is generated. In JavaScript backend a statically bound instance access
requires a unique getter to avoid the dynamic lookup, and therefore,
though using DirectPropertyGet is an optimization
to the VM, it would be a regression to the JavaScript backends if
they didn't handle DirectPropertyGet as a PropertyGet.
This CL removes the misuse and thus enables JavaScript backends to
handle DirectPropertyGet with the intended semantics.
Change-Id: Ie41aefbf19e8c63244f10a1afda1ddbfdf7d3c19
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/164085
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Johnni Winther <johnniwinther@google.com>
This requires a change to flow analysis that does not promote
expressions to Never through is-tests and equality tests.
Change-Id: Iec2ba5b78e61d205ad21dad6f07dbdb25fc746d3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/163380
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Dmitry Stefantsov