commit | 5129cff930d9039852c4a037e096fd97551eec1e | [log] [tgz] |
---|---|---|
author | Alexander Markov <alexmarkov@google.com> | Tue Apr 13 02:36:16 2021 +0000 |
committer | commit-bot@chromium.org <commit-bot@chromium.org> | Tue Apr 13 02:36:16 2021 +0000 |
tree | d464862ac966cd1282a690ab03b88dcab2832f39 | |
parent | 05a0508e7c2d5176cc12dabd8403e6213a8794bd [diff] |
[vm/aot] Discard Code objects from the heap While deserializing AOT snapshot, Code objects which do not contain valuable information besides entry point and stack maps are discarded and not allocated on the heap (they are replaced with StubCode::UnknownDartCode()). PC -> Code/CompressedStackMaps lookup is implemented using a separate table (InstructionsTable). Flutter gallery in release-sizeopt mode: Heap size of snapshot objects: arm -26.89%, arm64 -27.68% Large Flutter application in release mode with --dwarf-stack-traces: Heap size of snapshot objects: -24.3%. Discarded Code objects: 72.5% of all Code objects. Issue: https://github.com/dart-lang/sdk/issues/44852. TEST=existing tests; "--dwarf_stack_traces --no-retain_function_objects --no-retain_code_objects" mode is enabled for a few tests. Change-Id: I5fe3e283630c8e8f4442319d5dcae38d174dd0d8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/189560 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>
Dart is:
Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.
Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.
Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:
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