* Add a new `SExpDouble` atom and change `SExpNumber` to `SExpInteger`.
* Allow for negative integers in deserialization.
* Add support for `LocalVariable`s and related instructions.
* Function objects are now represented by actual S-expressions generated
with the new `FunctionToSExp` method. Previously, they were only represented
by a symbol containing their canonical name.
* The top-level tag for a serialized flow graph is now `FlowGraph`, not
`function`. This avoids confusion between serialized flow graphs and
serialized function references. Similarly, the old `FunctionToSExp`
method is now called `FlowGraphToSExp`.
* Made all SExpression* returning functions that take Object (or subclass)
instances return nullptr if the passed in instance is the null object,
except for ObjectToSExp, which returns the symbol `null`.
* Factored out creating tags for the different kind of block/function
entry and also created an `Entries` section to the top-level `FlowGraph`
form that contains function entry points similar to the `Constants` one
instead of inlining entries as separate elements in the `FlowGraph` form.
* Additional extra information in verbose mode for some elements.
Bug: https://github.com/dart-lang/sdk/issues/36882
Change-Id: Iede3865ec64f81955a87fd57b10e74d49ee8414c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/110917
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Teagan Strickland
2e197ae4de