In some cases, we could replace a binding instruction like a
InstanceCall with a subgraph that would end with a non-binding
instruction like a StoreInstanceFieldExpr. When the inliner attempted
to replace the uses of the former, the lack of an SSA temp in the latter
would cause weird results.
Change the code to check that the new replacement has an SSA temp, and
if it doesn't, use the temp assigned to the null constant in the flow
graph.
Closes https://github.com/dart-lang/sdk/issues/35481
Change-Id: Id90717b6a906703fb442f9cd0cacc3bc14fb4887
Reviewed-on: https://dart-review.googlesource.com/c/88321
Commit-Queue: Stevie Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
In Dart2, the type relation "is more specific than" is no different than "is
subtype of". Since Dart1 is not supported anymore, type checking in the runtime
can be simplified and cleaned up.
Change-Id: I8e95b9e47146315c9a6f6c29b732ecbeb4e9ae97
Reviewed-on: https://dart-review.googlesource.com/c/88221
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Turn off concurrent marking during a reload as new instances could be allocated when loading a kernel file and this results in inconsistencies for the marking thread which is traversing the heap and expects to find instances only from the old set of classes.
(This change is related to Issue https://github.com/dart-lang/sdk/issues/35401)
Change-Id: I294b91d2cc5d86b860a77684457b0f963d2fe557
Reviewed-on: https://dart-review.googlesource.com/c/87707
Commit-Queue: Siva Annamalai <asiva@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Rationale:
Finds general bounds on an induction variable by
looking at loop exits that use strict comparisons.
An intended client is bounds-check-elimination (AOT).
Change-Id: Icfd6481aad9669c15b78630e4322667cfce7c1ef
Reviewed-on: https://dart-review.googlesource.com/c/87485
Commit-Queue: Aart Bik <ajcbik@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
CanonicalType is a leftover method/field from the time classes were keeping
track of their own canonical types and is still used for non-generic classes.
DeclarationType is more general and can be used where CanonicalType is used.
The field canonical_type_ is renamed to declaration_type_ and now caches the
DeclarationType.
Change-Id: I585c7bc2d3ae760a4a0e783bc77fb8d8efdbf682
Reviewed-on: https://dart-review.googlesource.com/c/87482
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
This fixes a bug with generation of coverage report in presence of mixin declaration/application coming from different dill files.
Change-Id: Ie80fd6080cf65c3b895606809194c2bc6a08612a
Reviewed-on: https://dart-review.googlesource.com/c/87605
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Keerti Parthasarathy <keertip@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
This temporarily fixes issue 35432, but a more permanent fix should be applied
to the optimizing compiler.
Change-Id: Ibb43b180ea74f2693c48128e90badbb6b411f5b5
Reviewed-on: https://dart-review.googlesource.com/c/87500
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Previous the test was accessing this array without any synchronization
meaning that stores of new ICData objects into this array could
be observed too early, before ICData object itself is initialized.
Also add release/acquire in the code that attaches ICData map to
the function - to ensure that if compiler thread sees ICData map
then it is guaranteed to be fully initialized.
Closes#34999
Change-Id: I95ba857122e2a5afed90b1518d591282e8255002
Reviewed-on: https://dart-review.googlesource.com/c/87583
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Auto-Submit: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Original PR was reverted because it broke hot-reload bots. This CL adds steps to initialize kernel_service compiler for child isolate. Compiler is needed to support hot-reload request. Child isolate's compiler is created from full kernel file produced by main isolate's compiler. Changes since original PR are pkg/vm/bin/kernel_service.dart in pkg/vm/lib/incremental_compiler.dart.
Further this CL changes kernel fingerprint calculation for interface types so it calculates the hash of the canonical names themselves, rather than indices(that might change from one compilation to another).
This reverts commit 63fd8f63e6.
Change-Id: I6fe5b2ef99f209b32cd4087dfd1c8cac229c2d8b
Reviewed-on: https://dart-review.googlesource.com/c/87265
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Liam Appelbe <liama@google.com>
If the --use-bare-instructions flag is enabled we will:
* Not load CODE_REG inside CallThroughCode (polymorphic case)
* Not load CODE_REG inside CallThroughFunction (megamorphic case)
* Store the EntryPoint of the function in the MegamorphicCache tables
(instead of a Function pointer)
Issue https://github.com/dart-lang/sdk/issues/33274
Change-Id: I8aca689dc4e92ece897972da4ae202338527ac62
Reviewed-on: https://dart-review.googlesource.com/c/86928
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Dispatch interface calls via hashtable rather than inline cache.
InterfaceCall doesn't need to take arguments descriptor into account
when doing method lookup.
Change-Id: I30eae6ea638d1d2ad2cf3ff073c653fee3377f31
Reviewed-on: https://dart-review.googlesource.com/c/86106
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Régis Crelier <regis@google.com>
If the --use-bare-instructions flag is enabled we will:
* Make call sites load the target directly from the pool (instead of
the code object) - this saves one instruction (and an indirect load)
* Ensure the object pool will have direct entry addresses by:
- Letting the clustered snapshot reader change any StubCode::UnlinkedCall()
in the object pool by it's monomorphic entry
- Change the code patcher to patch SwitchableCalls by writing the
monomorphic entry into the pool (instead of the code object)
Issue https://github.com/dart-lang/sdk/issues/33274
Change-Id: I4e41fc8e4461bde477cc559a6a4fccaaf3a350b5
Reviewed-on: https://dart-review.googlesource.com/c/86160
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
This is the final CL which adds a new --use-bare-instructions flag to
the VM.
If this flag is set during AOT compilation, we will:
* Build one global object pool (abbr: GOP) which all code objects
share. This gop will be stored in the object store. The PP register
is populated in the enter dart stub and it is restored when
returning from native calls.
* Gets rid of the CODE_REG/PP slots from the dart frames. Instead the
compiled code uses the global object pool, which is always in PP.
* Starts emitting pc-relative calls for calls between two dart
functions or when invoking a stub.
Limitation: We only emit pc-relative calls between two code objects
in the same isolate (this is because the image writer is writing
instruction objects for vm-isolate/main-isolate seperately)
* We do compile-time relocation of those static calls after the
precompiler has finished its work, but before writing the snapshot.
This patches all the instruction objects with pc-relative calls to
have the right .text distance.
* We emit a sorted list of code objects in ObjectStore::reverse_code_table,
which will be used by the AOT runtime to go back from PC to Code
objects (where all metadata, e.g. stack maps, catch entry moves, pc
descriptors are available).
Issue https://github.com/dart-lang/sdk/issues/33274
Change-Id: I6c5dd2b1571e3a889b27e804a24c2986c71e03b6
Reviewed-on: https://dart-review.googlesource.com/c/85769
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
This API does not work in CFE world because CFE does not see classes
created dynamically.
Fix UseDartAPI benchmark that was using this API and was broken as a result.
Change-Id: If691373d32ac5b8ff23e350ce2eb5ed44045b1f1
Reviewed-on: https://dart-review.googlesource.com/c/87183
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Auto-Submit: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Rationale:
Refactor DartFuzz so that long lists of values appear
in separate file, making the actual fuzzing code easier
to read. Also, this prepares generating some of the
lists automaticaly (such a library methods). Note that
*no* version bump is required, since this refactoring
does not change behavior.
Change-Id: Ic58eb7bc1aa63f48ec0d37e3c2399917786086bd
Reviewed-on: https://dart-review.googlesource.com/c/87266
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Aart Bik <ajcbik@google.com>
Rationale:
Having a literal null checked by CheckNull with
a subsequent Redefinition resulted in some strange
unboxing that crashed AOT (fix courtesy Slava!).
Note that we still have some ambiguity around
adding/removing environments from instructions
that may deoptimize, but this change fixes all
prior related DartFuzz failures.
https://github.com/dart-lang/sdk/issues/35335
Change-Id: Ifb50d8cddf93e57758b2bbb83ad397ea281e9307
Reviewed-on: https://dart-review.googlesource.com/c/87280
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Aart Bik <ajcbik@google.com>
In Dart2, mixin application classes are generated by kernel and type resolution
is performed by kernel. In Dart1, using the VM parser, these tasks were done
during class and type finalization.
Change-Id: I927b1446d906ffd76ed9591c96e0d974df09f3bf
Reviewed-on: https://dart-review.googlesource.com/c/87025
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This CL adds a [ReversePcLookupCache] which, based on a list of code
objects, builds up a binary searchable table for mapping PCs to Code
objects (where all the metadata is available, like stackmaps, ...).
This CL also adds stack walking support for "bare instruction" frames.
In a later part we will start emitting the sorted list of code objects
(via the new field in the object store) under a flag.
Issue https://github.com/dart-lang/sdk/issues/33274
Change-Id: I3c06c12bc0fb266dc1bd843a4a11b5208773151d
Reviewed-on: https://dart-review.googlesource.com/c/85746
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Zach Anderson