To do this, we add writable data sections (currently uninitialzed) to ELF and Asm snapshots
and allow Instructions to have patchable relocations against (the start of) these sections.
Issue https://github.com/dart-lang/sdk/issues/37295 (see also for design & discussion).
Change-Id: If20bfa55776f4044aaa6bb8ea2101d2ada41842c
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-android-release-arm-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/110221
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
This matches the behavior for Code::var_descriptors and causes the field to effectively be nulled when writing a snapshot. It may be lazily recomputed by the reader. Fixes various app-jit tests in bytecode mode that causes the var descriptors to be generating by printing stack traces.
Change-Id: I04fddaf46508050eeab8af63d5c6eb1e1b7fa51f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/115000
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Library dependencies are serialized in bytecode as extended annotations.
Fixes the following tests with bytecode:
co19_2/Language/Metadata/before_export_t01
co19_2/Language/Metadata/before_import_t01
service/library_dependency_test
Change-Id: Idfbac6fcd56318d994d179864f0f5fd7d95089a9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114928
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
StringInterpolateInstr::EmitNativeCode calls FlowGraphCompiler::GenerateStaticCall
with null ICData, so GenerateStaticCall gets ICData using GetOrAddStaticCallICData.
GetOrAddStaticCallICData may return existing ICData object, which could be cloned
in case of background compilation, so GenerateStaticCall should get Original()
ICData before using it.
Fixes https://github.com/dart-lang/sdk/issues/38106
Change-Id: I6f4b72cba0a09eddd467790b0ab31926aa2dcfab
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112180
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Adds support for:
CheckStackOverflow
Parameter
SpecialParameter
Adds handling of Integer, Double, Class, Type, and TypeArguments
in ParseDartValue. Adds handling of values visited in the graph prior
to the corresponding definition to keep traversal of block contents as
one pass.
Results from compiling hello world program:
* Early round trip:
* Contains unhandled instructions: 4157
* Failed during deserialization: 0
* Successful round trips: 21
* Late round trip:
* Contains unhandled instructions: 4023
* Failed during deserialization: 29
* Successful round trips: 126
Bug: https://github.com/dart-lang/sdk/issues/36882
Change-Id: Icb2972749ee86891d5847519a3b5097ad5c63c54
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113326
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
At this point, we do get some successful deserializations (of
methods that are optimized into constant value returns).
Adds support for:
GraphEntry (including constant pool)
FunctionEntry
TargetEntry
Return
Results from compiling hello world program:
* Early round trip
* Contains unhandled instructions: 4180
* Failed during deserialization: 0
* Successful round trip: 0
* Late round trip
* Contains unhandled instructions: 4163
* Failed during deserialization : 0
* Successful round trip: 15
Bug: https://github.com/dart-lang/sdk/issues/36882
Change-Id: I9e0919f6ffbfe059ce0efd55f9a767c1ba805795
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113325
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Aart Bik <ajcbik@google.com>
Currently the snapshotter will just reset the weak tables once it's
done. Once we have a shared heap this would not work anymore since the
resetting of the weak tables can happen while another isolate is in the
middle of snapshotting.
We therefore make each isolate have it's own weak table used for
snapshotting messages.
The memory for the weak tables is managed by a std::unqiue_ptr in the isolate.
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: Ic0f4c4a96b6e66606be9e004259d2fee995f7099
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114858
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
If the debugger has already signaled the resolution of a breakpoint in a
bytecode function, it should not signal its resolution in code again.
This fixes test service/breakpoint_async_break_test
Change-Id: I88743b65eb3049a1a9476cb67f17ebf4275f8455
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114923
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Régis Crelier <regis@google.com>
Since both throw and rethrow statements share the same 'Throw' bytecode opcode
(differentiated by an operand), we make the opcode not implicitly 'debug
checked' anymore.
Instead, we emit a 'DebugCheck' opcode for the throw statement only.
This fixes the following test:
service/async_single_step_exception_test
Change-Id: I4e540ea0a640fda5365d51933ce4e5125548e2f2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114754
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Removing source information for this call prevents the debugger to set a
breakpoint in compiled bytecode on this call which occurs prior to the first
DebugStepCheck in the function.
However, this change uncovered a bug in debugging interpreted bytecode:
The first source range of an async_op function gets split into 3 ranges, with
the middle range specifying a NoSource token position. The debugger does not
set a breakpoint in the first range, because DebugCheck is not yet encountered,
which is correct, but it failed to look for another range (the 3rd one) with the
same token position.
Change-Id: I11dcc75d115cb57b37f62afd83c783cf563b63e0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114700
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Régis Crelier <regis@google.com>
The Insert method runs in constant time, but inserting multiple
pairs with the same key results in all pairs being added to the
map. Remove only removes the most recent pair with a key equal
to its argument, so this means calling Remove after an Insert
does not guarantee that Lookup for a key will fail.
The new Update method, when used instead of Insert, guarantees
that the map contains at most one pair for a set of equal keys.
This means that Lookup is guaranteed to fail after a Remove
call, but the Update method requires walking the existing
chain of entries for the key's hash value.
(In practice, our code tends to call Lookup before Insert to
avoid adding pairs with equal keys more than once, but this
practice does mean that updating the value returned by Lookup
cannot be done without first removing the old entry. This new
method simplifies that workflow if used consistently.)
Change-Id: I2944472a7fc74c1de41cb25eb9469a7c7e491ceb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114069
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Fixes assumption about pointer equality of keys.
Adds comment to document current assumption that multiple pairs
with equivalent keys are not inserted.
Change-Id: Ieb17d1b357f903dcc09274ac648c1a97e7ee85d3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113686
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
This adds in a version of the IL deserializer that doesn't actually do
any deserialization yet.
However, it adds in a couple of compile passes that passes the FlowGraph
for compiled functions through the serializer and deserializer. If the
deserialization step succeeds, then the FlowGraph stored in the
CompilerPassState is replaced with the new FlowGraph for the rest of the
compiler.
Also change the default zone handling in the FlowGraphSerializer to use
the zone for the current thread, instead of the zone stored in the
FlowGraph, so that it is appropriately affected by StackZone uses.
Bug: https://github.com/dart-lang/sdk/issues/36882
Change-Id: I8fa1c7af434f724ccec45ddb73263f84730af5b0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113184
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Aart Bik <ajcbik@google.com>
The mutator has to ensure all writes to the ICData are flushed before we set the
megamorphic bit.
Similarly the BG compiler has to ensure (during cloning of ICData) that all
loads from the ICData happen after we've determined whether the megamorphic
bit has been set.
This allows us to maintain the invariant that if the ICData is marked as
megamorphic, the entries in it will have reached FLAG_max_polymorphic_checks.
Issue https://github.com/dart-lang/sdk/issues/37595
Change-Id: Idec7aef8ca1369668f5c9c57b7b32759acbd270d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114322
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
* Set parent for TypeParameters created in createExpressionEvaluationComponent.
* Resolve references from bytecode to an expression evaluation class
using real class. Expression evaluation class could be referenced
from type parameters.
* Avoid registering expression evaluation classes in hierarchy. They
shouldn't be discovered through direct subclasses or implementors,
as expression evaluation classes don't have cids.
* Add :function_type_arguments_var local variable to bytecode local
variables info, so expression evaluation can find function type
arguments which are in scope.
Change-Id: I515431a989b4d02af4ecf90579931dd59d3acadd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114182
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Collect token positions of field declared in bytecode.
Improve debugger debugging: Disassemble both bytecode and code when applicable.
Change-Id: I56188cf24ef4bfe8a93cce11c2f4505152abdd02
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112680
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
The original revision is in patchset 1.
Three bugs are fixed:
1. Fix SIMARM_X64 build: no need to generate trampolines for AOT or simulated JIT.
2. Hot-reload: Fix hot-reload: don't invalidate Code for force-optimized functions.
3. Windows: Provide shadow space to runtime routines.
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-mac-debug-simarm_x64-try,vm-kernel-precomp-mac-release-simarm_x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-win-debug-x64-try,vm-kernel-win-release-ia32-try,vm-kernel-win-release-x64-try
Change-Id: I326009cfacb51a84e9de4ddf9ff2d6d415460f91
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113829
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Samir Jindel