- [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 .
When throwing to a frame scheduled for lazy deopt, update the continuation pc for that frame to be the catch handler.
Weaken new assert that the deopt pc belongs to the frame's code as the deopt pc for the last eager deopt in a function lies outside the code, after the call to the deopt stub.
R=fschneider@google.com
Review URL: https://codereview.chromium.org/2392613002 .
If an error happens during the compilation of a function body, an Error is thrown which can be intercepted, and ensures that finally blocks are executed before the isolate is terminated.
The language spec is vague about compilation errors. A doc describing the intentions behind this CL is at
https://docs.google.com/document/d/1_MWOgwJadLCQSBps0zD6Rj5dG4iP1UBuiDvTMH-WMzI/edit#
Example:
1 void bad() {
2 return 5
3 }
4
5 void main(args) {
6 bad();
7 }
Before this CL:
$ dart ~/tmp/e.dart
'file:///Users/hausner/tmp/e.dart': error: line 2 pos 11: semicolon expected
return 5
^
$
After this change:
$ dart ~/tmp/e.dart
Unhandled exception:
'file:///Users/hausner/tmp/e.dart': error: line 2 pos 11: semicolon expected
return 5
^
#0 main (file:///Users/hausner/tmp/e.dart:6:3)
#1 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:259)
#2 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:148)
$
Notice that the stack trace points to the call site of bad(), not the text location of the syntax error. That's not a bug. The location of the syntax error is given in the error message.
BUG= https://github.com/dart-lang/sdk/issues/23684R=asiva@google.com, lrn@google.com
Review URL: https://codereview.chromium.org/2044753002 .
- Conditionally remove fields of Code, Function and ICData that are not used in the AOT runtime.
- Don't include RawClosureData.context_scope_ in AOT snapshots.
- Remove parameter names not needed for method resolution.
- Remove parameter types not needed for function type tests.
- Deduplicate parameter name and parameter type lists.
- Shrink and share the initial MegamorphicCache table.
Flutter gallery (IsolateSnapshotReader event)
snapshot size 2731129 -> 2199999 (-19.4%)
initial heap 7899568 -> 5433176 (-31.2%)
R=fschneider@google.com
Review URL: https://codereview.chromium.org/2326483005 .
Expand the range on a miss if all classes in the range have the same lookup result, otherwise transition to the stub that does a linear scan of ICData.
Because we do a depth-first sort of classes during AOT, if a call site sees only objects all inheriting the same function as the call target, the call site will be handled by this new stub.
Adjust LoadClassIdMayBeSmi on x64 to preserve the object.
R=fschneider@google.com
Review URL: https://codereview.chromium.org/2279563002 .
The call sequence is very similar to a classic IC call, except the guarded class and the target are loaded indirectly from the constant pool instead of as immediates. In the monomorphic case, we call directly to the expected target with a class check in the callee. In the unlinked, polymorphic and megamorphic cases, we call a stub; these case are now call-through instead of call-and-return.
Every code, except stubs involved in switchable calls, includes the class check sequence at the beginning. So we now distinguish between a checked and an unchecked entry point. Generated code except the switchable call continues to use the unchecked entry point.
PC offsets are calculated relative to the beginning of the instruction stream, rather than either entry point.
BUG=
R=fschneider@google.com
Review URL: https://codereview.chromium.org/2226893002 .
We now check all of the scripts which make up a library. If any
script is modified, then we consider that library to be modified. We
also consider any library which imports a modified library to be
modified. To propagate this info efficiently, we build and discard
the imported-by graph when beginning a reload.
The embedder must provide a FileModifiedCallback in order to support
the detection of modified scripts.
In order to detect changes to package: libraries, we have modified the
embedder interface to provide the resolved url when possible, so that
we don't need to re-resolve package uris when checking for reload.
This change is incompatible and all embedders will need to be updated.
We now support a "force" flag when reloading sources. This causes all
libraries to be reloaded regardless of whether the underlying scripts
have been updated.
Closes#26919R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2186423002 .
1. Setting the IC data array. This may have caused corrupt IC data seen by the
background compiler when cloning IC data.
2. Reading the thread_interrupt_disabled_ flag. This was reported as a race with TSAN.
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2176803003 .
When a script is not in the vm heap, we now cache compile time
constants on the script object itself. During isolate reload we may
have both an old and a new version of a script being compiled at the
same time and they need to cache their constants separately. This
also means that compile time constants from old scripts can be
collected when the script is collected, which is good.
When a script is in the vm heap, we continue to use the old system of
employing a shared per-isolate cache stored in the object store.
Closes#26833
BUG=
R=fschneider@google.com, johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2126393003 .
The optimizer now also deals with is-checks for num, double, _Smi in the
same way as it did for int before.
This CL eliminates many is-tests of constants that appear after inlining.
Also, make a better distinction between deoptimizing and non-deoptimizing
cases when replacing is-tests. e.g. InstanceOfInstr can't cause eager
deoptimization.
Also, improve tracing output when running e.g. --trace-inlining
Minor fix in raw_object.h.
BUG=
R=vegorov@google.com
Review URL: https://codereview.chromium.org/2074533002 .
This is caused by differnet packing of structs in the host- and target-toolchain -
in this case the Android XARM compiler does align the SIMD payload differently
than the SIMARM host.
(also see a similar bug fix for doubles/mints: 5dc51af924)
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2067443004 .
table, this ensures that we do not linearly walk through
a large type list in the class calling the expensive
'Type::Equals' method (some applications have close to
1304 generic types in them)
- Use the stand hash table implementation for TypeArguments
canonicalization instead of a custom hash table
R=johnmccutchan@google.com, regis@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/1965493004 .
This is a cut of the work that Todd and I collaborated on in the reload branch.
In this CL, we've dropped the loader port hacks, in other words, on stack reloading in the standalone embedder does not work yet.
- [x] Support for hot reloading of isolate source code
- [x] Unit test harness and many tests
- [x] Service protocol and Observatory support
- [x] Product build does not include support for hot reloading.
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/1965823002 .
- Add a zone parameter to TokenStream::Iterator
- Add IsXXXX() functions in raw_object.h using GetClassId()
- Modify
- Function::owner
- Function::origin
- Type::IsMalformed
- Type::IsMalbounded
- Type::error
to not create a Handle in the common path
R=regis@google.com
Review URL: https://codereview.chromium.org/1952023002 .
This undoes most of b2f3e8efe1.
This optimization prevents precompiled code from being disabled and re-enabled, because disabling causes the code to lose its only reference to its own instructions. This was okay for precompilated code that ran without a JIT because it is never disabled, but precompiled code that runs in a JIT will become disabled when corresponding optimized code is compiled and re-abled after a deopt.
R=fschneider@google.com
Review URL: https://codereview.chromium.org/1925153003 .
Speeds up name resolution of code that uses extensive
“exports” clauses. The pathological example in the bug report
compiles about 50 times faster.
Introduces a trail of visited libraries to detect cycles when following the exports directives. This works better with the background compiler.
BUG= 26145
Review URL: https://codereview.chromium.org/1902563002 .
John McCutchan