This reverts commit eebbac4d78.
Reason for revert: Crash on ASAN bots
Original change's description:
> [vm] Tighten stack overflow check in the parser.
>
> A recent change increased the accuracy of the stack limit used in the stack overflow check. This allowed the parser to complete some example programs that previously tripped the limit, but the flow graph builder or optimizer (depending on mode) then experienced the overflow. Rather than sprinkle checks throughout the compiler pipeline, we now flag an error in the parser based on the amount of nesting instead of amount of call stack used.
>
> Bug: https://github.com/dart-lang/sdk/issues/31158
> Change-Id: I794e484d736e61499fe6812cf25185ce097bcdd8
> Reviewed-on: https://dart-review.googlesource.com/15651
> Reviewed-by: Zach Anderson <zra@google.com>
TBR=rmacnak@google.com,zra@google.com
Change-Id: I232d929b24c54191d6688530c6f4c59dcccb5890
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: https://github.com/dart-lang/sdk/issues/31158
Reviewed-on: https://dart-review.googlesource.com/16400
Reviewed-by: Ryan Macnak <rmacnak@google.com>
A recent change increased the accuracy of the stack limit used in the stack overflow check. This allowed the parser to complete some example programs that previously tripped the limit, but the flow graph builder or optimizer (depending on mode) then experienced the overflow. Rather than sprinkle checks throughout the compiler pipeline, we now flag an error in the parser based on the amount of nesting instead of amount of call stack used.
Bug: https://github.com/dart-lang/sdk/issues/31158
Change-Id: I794e484d736e61499fe6812cf25185ce097bcdd8
Reviewed-on: https://dart-review.googlesource.com/15651
Reviewed-by: Zach Anderson <zra@google.com>
Request particular attention to generic_creation_test and generic_field_mixin6_test, but all of the following required tweaks
to the status files to pass tests:
generic_closure_test
generic_function_bounds_test
generic_function_dcall_test
generic_function_typedef_test
generic_field_mixin6_test
generalized_void_syntax_test
generic_functions_test
BUG=
R=jmesserly@google.com
Review-Url: https://codereview.chromium.org/3008573002 .
Interesting tests requiring status file or other changes:
type_variable_promotion_test
type_variable_scope_test
type_variable_static_context_negative_test - changed from negative to compile-time error
unresolved_top_level_method_negative_test - changed from negative to compile-time error
unary_plus_negative_test
unhandled_exception_negative_test
unbound_getter_test
unresolved_in_factory_negative_test -
unresolved_top_level_var_negative_test - changed from negative to compile-time error
unresolved_top_level_method_negative_test - changed from negative to compile-time error
vm/async_await_catch_stacktrace_test
BUG=
R=lrn@google.com
Review-Url: https://codereview.chromium.org/3008723002 .
Interesting changes:
- A static getter colliding with an inherited non-static setter is a
compile error, not a type warning.
- Trying to call a setter on what is only a getter is a compile error
with no runtime behavior.
- Add support to test.dart for negative tests in DDC.
BUG=
R=jcollins@google.com
Review-Url: https://codereview.chromium.org/3005643002 .
Obfuscation is controlled by obfuscate flag in Dart_IsolateFlags.
Obfuscation of identifiers is performed during script tokenization - when TokenStream is generated from the source. All kIDENT and kINTERPOL_VAR tokens are renamed consistently using a persistent obfuscation map stored in ObjectStore::obfuscation_map.
Some identifiers (pseudo-keywords, arithmetic operators, builtin recognized methods and entry-points) are not renamed to keep name based lookups from breaking. All other identifiers are renamed.
Constant instances of Symbol-s (both created via literal syntax #ident and using constant constructor const Symbol("ident")) are renamed consistently with corresponding identifiers.
Script urls and Library urls and names are also obfuscated.
Obfuscation map can be dumped as a JSON array at the end of precompilation using Dart_GetObfuscationMap API.
BUG=https://github.com/dart-lang/sdk/issues/30524R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/3003583002 .
generic_instanceof ... getter_closure_execution_order_test.
The main interesting one is generic_methods_type_expression_test. It
was testing old Dart 1.0-specific behavior and needed a lot of changes.
R=jmesserly@google.com
Review-Url: https://codereview.chromium.org/3001803002 .
./language[_strong]/class_keyword_test.dart
./language[_strong]/closure_shared_state_test.dart
R=johnniwinther@google.com
NOTE: I had to bypass hooks since the analyser fails on the files that have static compile-time errors. Should I do something else?
Review-Url: https://codereview.chromium.org/3001433002 .
This CL is identical to the reverted CL 2990703002 which implements
syntactic support for generalized void in the analyzer, plus two bug
fixes in pkg/analyzer/test/generated/parser_test.dart and
pkg/analyzer_cli/test/error_test.dart. In the former, a test on parsing
`void,` was changed to expect an error: _isTypeIdentifier on a lone
`void` will no longer return true, which is necessary because `void`
can now be used as a type annotation alone. Another test on `void x`
was added, which produces the behavior previously seen for `void,`.
In error_test, the error which is used throughout was changed from
`void foo;` to `var int foo;` (because the former is no longer an
error).
Review-Url: https://codereview.chromium.org/2992623002 .
Changed the analyzer parser to accept usages of `void` which were
previously rejected as syntax errors: `void` can now be the type
annotation for a variable or parameter, and it can be an actual type
argument.
Removed affected error codes like VOID_PARAMETER, VOID_VARIABLE,
VOID_RETURN_FOR_GETTER and associated declarations (like checking
functions), and adjusted test cases to expect success rather than
compile time errors.
Adjusted generalized_void_syntax_test.dart (it had real errors like
`final` variables with no initializer etc. that were not detected
when tools would just reject the file as syntactically wrong).
R=brianwilkerson@google.com
Review-Url: https://codereview.chromium.org/2990703002 .
This CL includes the following fixes:
* Fix for incorrect non-nullable assumption about _Closure._hash field.
* Add error handling into BecomeMapTraits::Hash.
* Correct assertions for validating layout of Closure objects.
* Add identityHashCode to the list of VM entry points in precompiler.
Closes#30211.
Original code review:
https://codereview.chromium.org/2983823002/
Original CL description:
This performance improvement is inspired by Flutter listeners stored in
the HashSet (see ObserverList) and frequently checked using
HashSet.contains(). If there are many such listeners and they are
implicit instance closures (for example, created by
'new Listenable.merge(...)'), HashSet.contains() becomes very slow.
It spends a lot of time in Closure_equals native method due to hash
collisions between closure objects with same function
but different receivers.
This CL improves hashCode() calculation for implicit instance closures
by mixing function hashcode with identity hashcode of the receiver.
For explicit closures and static implicit closures hashCode() is
improved by using identityHashCode() of a closure object.
Also, hashcode is calculated once and cached in each closure instance.
The size of a closure instance doesn't grow up because there was unused
word-size padding both on 32-bit and 64-bit architectures.
The execution time of the following micro-benchmark is reduced from
47665ms to 135ms on my Linux/x64 box.
-------------------------------------
import "dart:collection";
class Foo {
int _a;
Foo(this._a);
void bar() {}
}
main() {
HashSet hs = new HashSet();
for (int i = 0; i < 1000; ++i) {
hs.add(new Foo(i).bar);
}
var watch = new Stopwatch()..start();
for (int i = 0; i < 1000; ++i) {
for (var c in hs) {
hs.contains(c);
}
}
int time = watch.elapsedMilliseconds;
print("Time: ${time}ms\n");
}
-------------------------------------
R=zra@google.com
Review-Url: https://codereview.chromium.org/2988493002 .
Bob Nystrom