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4 Commits

Author SHA1 Message Date
Alexander Markov 5129cff930 [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>
 2021-04-13 02:36:16 +00:00
Stephen Adams 803658a6d8 [corelib_2] fix bigint_from_test for web platforms 
Change-Id: Ib97814ba6b30822296c24026ddcd09f119508ed7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/108422
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
 2019-07-09 18:25:52 +00:00
Régis Crelier c2a48ee065 [VM] Fix bigint left shift that could cause heap corruption when intrinsified. 
The size of the result digit array was not computed correctly.
When 64-bit intrinsics are used, one extra digit pair must be allocated.

Change-Id: Id3ca3a16ef24b598e44bf25221d400b9be71248a
Reviewed-on: https://dart-review.googlesource.com/c/94683
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Régis Crelier <regis@google.com>
 2019-03-01 18:59:10 +00:00
Lasse Reichstein Holst Nielsen a81bc639b5 Fix bug in BigInt.from with certain double values. 
Add test.

Change-Id: I385f7237e1b3d004b4401e18a82919b15d097181
Reviewed-on: https://dart-review.googlesource.com/46460
Commit-Queue: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Florian Loitsch <floitsch@google.com>
 2018-03-19 17:46:35 +00:00