|author||Alexander Markov <firstname.lastname@example.org>||Thu Aug 18 16:53:24 2022 +0000|
|committer||Commit Bot <email@example.com>||Thu Aug 18 16:53:24 2022 +0000|
[vm/compiler] Initial implementation of IL binary serialization This change adds binary serialization/deserialization of flow graphs. It supports all IL instructions and certain objects which can be referenced from IL instructions. IL binary serialization is a useful machanism which would allow us to split compilation into multiple parts in order to parallelize AOT compilation. The program structure (libraries/classes/functions/fields) is not serialized. It is assumed that reader and writer use the same program structure. Caveats: * FFI callbacks are not supported yet. * Closure functions are not re-created when reading flow graph. * Flow graph should be in SSA form (unoptimized flow graphs are not supported). * JIT mode is not supported (serializer currently assumes lazy linking of native methods and empty ICData). In order to test IL serialization, --test_il_serialization VM option is added to serialize and deserialize flow graph before generating code. TEST=vm/dart/splay_test now runs with --test_il_serialization. TEST=Manual run of vm-kernel-precomp-linux-debug-x64-try with --test_il_serialization enabled (only ffi tests failed). Issue: https://github.com/dart-lang/sdk/issues/43299 Change-Id: I7bbfd9e3a301e00c9cfbffa06b8f1f6c78a78470 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/254941 Reviewed-by: Ryan Macnak <firstname.lastname@example.org> Commit-Queue: Alexander Markov <email@example.com> Reviewed-by: Slava Egorov <firstname.lastname@example.org>
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