Before, the VM's dart:typed_data was a complete replacement of the SDK's
dart:typed_data implementation instead of a patch. This is unlike all
the other SDK libraries. This difference requires special-casing for
dart:typed_data in tools that handle the SDK libraries (e.g., the
Analyzer's patching support, the GN build).
This change makes dart:typed_data back into a patch to the SDK's
implementation. It reintroduces a distinction between abstract
interface and concrete implementation classes, so there are more
classes.
BUG=
R=fschneider@google.com, vegorov@google.com
Committed: https://github.com/dart-lang/sdk/commit/a9b906d319c32525a0600c75c008c92753591d86
Review-Url: https://codereview.chromium.org/2571563005 .
Before, the VM's dart:typed_data was a complete replacement of the SDK's
dart:typed_data implementation instead of a patch. This is unlike all
the other SDK libraries. This difference requires special-casing for
dart:typed_data in tools that handle the SDK libraries (e.g., the
Analyzer's patching support, the GN build).
This change makes dart:typed_data back into a patch to the SDK's
implementation. It reintroduces a distinction between abstract
interface and concrete implementation classes, so there are more
classes.
BUG=
R=fschneider@google.com
Review-Url: https://codereview.chromium.org/2571563005 .
- Adjust fingerprints to be independent of the library's private key, which varies with load order.
- Use usage_counter in AOT inlining decisions if JIT feedback is available.
- Reduce inlining in cold functions.
dart2js product aot snapshot 15841351 -> 14436273 (-8.86%)
R=fschneider@google.com
Review-Url: https://codereview.chromium.org/2562693003 .
Print snapshot sizes when generating an AOT snapshot from gen_snapshot (e.g., Flutter).
Remove some unnecessary symbols.
Use named constants for exit codes.
Use Log::PrintErr instead of fprintf(stderr) so we see error messages in adb logcat.
R=asiva@google.com
Review URL: https://codereview.chromium.org/2517683002 .
Fix a trio of issues in type finalization.
1. We were using is_type_finalized to detect classes that had already been
initialized by DilReader::ReadPreliminaryClass. This state is not
guaranteed by this function, however is_cycle_free is.
2. In the VM, classes that were created type finalized were not marked as
cycle free because finalization did not consider them so cycle-freeness
didn't matter. We would therefore try to initialize these classes with
DilReader::ReadPreliminaryClass and mutate types in them. This causes
them to have unfinalized types but still have is_type_finalized true.
3. Types in top-level procedures were not necessarily finalized. A simple
way to achieve this is to finalize each library's top-level class.
Review URL: https://chromereviews.googleplex.com/520437013 .
R=kmillikin@google.com
Review URL: https://codereview.chromium.org/2514373002 .
- [x] When performing a reload, track new fields with initializing expressions.
- [x] After a reload, run the initializing expressions for each new field on all instances of the class.
- [x] Unit tests (heart beat, throwing, and syntax errors)
- [x] Add some utility methods to Function, Field, and Script.
- [x] Fix a major bug in instance morphing and class hierarchy traversal.
Fixes#27666
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2489723003 .
This reverts commit 890f694de5.
Previous commit was passing field_type_map_ down in a place where it was not passed down before.
This caused some handles to be used across zones, which caused crashes.
BUG=
Review URL: https://codereview.chromium.org/2453463006 .
Start by removing all get:runtimeType overrides in the patch files to have a single point computing the runtime type - Object.get:runtimeType. Handle string, double and integer types inside both intrinsic and runtime call to unify their handling and guarantee that code works even with intrinsifier disabled.
With overrides removed we can easily check that get:runtimeType is unique function name within the application that is being precompiled and use that to convert InstanceCall(get:runtimeType, ...) into StaticCall even nothing is known about the receiver.
This enables us to check if both left side and right side of comparison are StaticCall(Object.get:runtimeType, ...) when specializing InstanceCall(==, x, y). If they are we convert InstanceCall(==, StaticCall(get:runtimeType, a), StaticCall(get:runtimeType, b)) into StaticCall(Object._hasSameRuntimeType, a, b). A canonicalization rule will later delete unused get:runtimeType invocations.
Object._hasSameRuntimeType is implemented in C++ and intrinsified. It operates without creating new runtime types (except for Closures - where it does for simplicity). Cases of different class ids (i.e. a.[cid] != b.[cid]) and non-parameterized types are handled completely in the intrinsic. The rest is handled in the runtime code.
Microbenchmarking results:
Same parameterized classes: 15x improvement
Different parameterized classes: 300x improvement
Different/same non-parameterized classes: 2x improvement
BUG=
R=fschneider@google.com, regis@google.com
Review URL: https://codereview.chromium.org/2379733002 .
- [x] Add three public fields to the "BoundVariable" service type: declarationTokenPos, visibleStartTokenPos, and visibleEndTokenPos. (naming suggestions welcome!)
- [x] Extend LocalVarDescriptors to hold the declaration token position (it already had the scope visibility boundaries).
- [x] Extend ContextScope to hold the declaration token position.
- [x] Add a unit test which verifies this works for local variables, function parameters, and closure captured variables.
Fixes https://github.com/dart-lang/sdk/issues/25569
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2419013004 .
The catch entry block has all locals in fixed locations
(Rj) where j = kNumberOfRegisters - i for parameter i.
This means we reserve a range of DBC registers at the top-end of the frame.
Those registers are blocked for general allocation to avoid any overlap
with the rest of the registers that are allocated from the bottom.
Each optimized frame with a try-catch will be kNumberOfRegisters wide.
BUG=
R=vegorov@google.com
Review URL: https://codereview.chromium.org/2388093003 .
Wait for concurrent sweep tasks before verifying points, as building the allocation set expects unmarked objects.
Make assertion okay with a missing stack map at entry, which transiently exists for OSR, as the frame looks the same as unoptimized code here.
Fixes#13608Fixes#23683
Reproduces issue #26927R=fschneider@google.com
Review URL: https://codereview.chromium.org/2411453003 .
Regis Crelier