To help facilitate this we move all IO into a separate helper
library/class. This makes it easier to have symmetric read/write
functions and to do IO within compile.dart where necessary.
Adding the new `opt` phase allows us to remove the duplicated code
between dartdev and compile_benchmark simplifying those two files a lot.
It will also allow us to more easily invoke wasm-opt within our internal
build pipeline.
For compile_benchmark we still run the opt phase independently (but
through dart2wasm) to keep the benchmark data as consistent as possible.
Change-Id: Iaa855dbc3a05abfedbc3eea4af32e3ba27e84600
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/464640
Commit-Queue: Nate Biggs <natebiggs@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Nate Biggs
fdeb9dc575