The DWARF standard specifically states that line number information is
unsigned (with 0 denoting no line number information). However, we
currently use special (negative) token positions in our DWARF
information directly as line numbers. Instead, convert any special token
positions to a line number of 0.
Fixes: https://github.com/dart-lang/sdk/issues/41860
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Change-Id: Ic26e553d6a6d642b456fe45760650de9c8478d16
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147902
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
These were supposed to be included into d959f4290e
but were accidentally left behind.
Readding these tests revealed a bug in the main commit - where
async/async*/sync* bodies were not properly disambiguated. There is a
change included here which fixes that.
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Change-Id: I1fff57c8d7b16ee72dd670f1a309dd756a2b2653
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147580
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
We used Align on the assembly_stream_ directly, which
calls StreamingWriteStream::Align and introduces null
bytes into the stream. When running with -Werror, this
will stop builds.
```
.../ios__app_ios_aot.S:2510:1: error: null character ignored [-Werror,-Wnull-character]
<U+0000><U+0000><U+0000><U+0000><U+0000>_kDartVmSnapshotBss:
```
Instead, we should have used AssemblyImageWriter::Align,
which introduces a .balign instruction instead.
Fixes b/156346855.
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Change-Id: If99f66ccd7eee67f86d654e17a639fad7096dc53
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147720
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
At present there is difference in assembly output from SIMARM/gen_snapshot and SIMARM_X64/gen_snapshot around classes that extend native wrappers(for example, dart:io NativeSocket).
See dartbug.com/41824.
Change-Id: I944901ff4cccde972623c490d1d67d894fb03595
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147808
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
Also base these and the corresponding methods in _OneByteString on
functions in dart:_internal, so they can be used in other patches.
Change-Id: Ibced31758db2959c111a01cdaa46df2971ae4a6c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146784
Reviewed-by: Martin Kustermann <kustermann@google.com>
Previously, AssertAssignable instructions could only be created with a
compile-time AbstractType value for dst_type. Relax this so that
AssertAssignable instructions can be created with a possibly
non-constant Value instead.
This is only an IL-level change for the instruction. Code generation for
AssertAssignable still requires the dst_type Value to be bound to a
constant and is otherwise unchanged from before, thus this should have
no impact on size or speed of generated code. (Generating the
non-constant case will be done in follow-up work.)
Bug: https://github.com/dart-lang/sdk/issues/40813
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Bug: https://github.com/dart-lang/sdk/issues/40813
Change-Id: I1f984039d8c2695c66161a69a3d80cfbe7110f19
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146801
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Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Only the case for unstripped snapshots and debugging information.
Stripped snapshots still have no static symbol table, only the
dynamic one.
Fixes: https://github.com/dart-lang/sdk/issues/41783
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Change-Id: Ibd82334597d34267a3b9e45a673d23c3f9e3fcb0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147182
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Aske Simon Christensen <askesc@google.com>
There was a code in the register allocator that recognized whether
destination is a spill slot or not by checking if it is one of
different location types. By accident QuadSpillSlot was missing
from that list - and as a result we were emitting redundant moves
when connecting split siblings after register allocation.
Change the code to just ask parent live which spill slot it was assigned
and use that to drive decisions.
https://github.com/dart-lang/sdk/issues/41805
Change-Id: I73e208acd0bf86dceeaad970b8e5cbcb9c3f8eaa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147550
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Additionally make it possible to filter the output of this tracing
using --print-flow-graph-filter=...
Expose should_filter() setting through CompilerState - to avoid
plumbing FlowGraph or Function through various methods that don't
already have access to either of these two.
Change-Id: Ia1b8bcff5702e869db23ea4407191741662b2417
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147544
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Originally, the assert here required the location be a machine register,
invalid, or a pair location if always_calls() was true, which meant
that SameAsFirstInput() could not be used.
Extend the assert to allow SameAsFirstInput(), but only if the location
of the first input is a machine register, invalid, or a pair location.
Also make sure any further changes to the first input remain consistent
with this expectation.
Fixes: https://github.com/dart-lang/sdk/issues/32787
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Change-Id: If43eb5399283d23f62a502edb0a9ce9c82813b3b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147101
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Since the virtual addresses in ELF snapshots are the same as in
separately saved debugging information, print the virtual address in
non-symbolic frames again when running from a snapshot compiled directly
to ELF."
Storing the relocated address as an extra field in the Image header,
which requires increasing the Image header size on 64-bit platforms,
means Image pages cannot be used reliably as HeapPages as objects no
longer start after kMaxObjectAlignment bytes.
Instead, we return to an older design that just uses the lowest bit
in the BSS offset to store whether the instructions in an Image were
compiled directly to ELF.
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Change-Id: I3819b0dc2719d69f5e8764ca8be8c6ae7171a7bc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146560
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
When generating DWARF for assembly snapshots, we use a lower bound
of the start of the isolate instructions section. Use the same bound
when generating DWARF for ELF snapshots as well.
Also avoid generating rows in the line number program for address 0.
Fixes https://github.com/dart-lang/sdk/issues/41756.
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Change-Id: I3d17e09ff8af3ba6fc70dcd6859d9b298e941ecf
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146584
Reviewed-by: Ryan Macnak <rmacnak@google.com>
* AssertAssignable should not be generated for top types according to
IsTopTypeForSubtyping().
* Arguments descriptor should be passed when calling field initializer
from InitLateInstanceField/InitLateFinalInstanceField stubs.
If interpreter is enabled, InterpretCall stub expects to find
arguments descriptor in a register. Also, lazy compilation stub
may save arguments descriptor in a slot visited by GC, so arguments
descriptor register should contain a GC-safe value.
Fixes https://github.com/dart-lang/sdk/issues/41807
Change-Id: Ia33ed1bc57007d674799fb4453c8ab4841037211
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147383
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
The bad arity maybe detected after an isolate reload or when using strong mode with a mix of opted in and opted out libraries.
The thrown NoSuchMethodError contains enough information to be useful, but does not mirror the complete invocation (e.g. arguments).
This CL does not fix https://github.com/dart-lang/sdk/issues/37517 where the target is missing after a reload (not just bad arity).
The VM implementation of NoSuchMethodError is cleaned up, but the deprecated constructor 'NoSuchMethodError(...)' is not yet removed, since it is still documented.
Change-Id: I0306971c59cb510d21cb1b1acc3545c8817dfea7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146986
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Régis Crelier <regis@google.com>
The following options are removed:
--use_strong_mode_types
--experimental_unsafe_mode_use_at_your_own_risk
The following flags and predicates are removed:
Dart_IsolateFlags::unsafe_trust_strong_mode_types
Isolate::argument_type_checks()
Isolate::can_use_strong_mode_types()
Isolate::should_emit_strong_mode_checks()
Also, everything depending on these flags is cleaned up.
Change-Id: I9328009ad5a42ea2173842386d612c465e3ebec1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147325
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
- Flips the flag from --nnbd to --no-nnbd so that by default it builds
the NNBD version
- using the --no-nnbd flag results in the SDK being built in a
directory which has the 'Legacy' suffix added to it
(e.g: out/DebugX64Legacy)
- the '--enable-experiment=non-nullable' flag still needs to be passed
in during execution so that CFE runs in that mode. This is different
from the 'null_safety' flag
Change-Id: I729630a7bd36ea7ae38134f9285b44e93c283c68
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138902
Reviewed-by: Paul Berry <paulberry@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Previously the output used scrubbed qualified names which hides some
of the information and causes names of various synthetic functions
collide. We change it to use internal qualified names instead and add
additional information for disambiguation:
- For functions this means adding a prefix for various synthetic
methods;
- For anonymous closures we add their token position;
- For types we prefix type parameters with their owner's name.
We also add a unit test covering parsing of
--print-instructions-sizes-to output.
As part of adding a test dart2native was changed to support passing
extra arguments to gen_snapshot binary.
Fixes https://github.com/dart-lang/sdk/issues/41137
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Change-Id: I299ab0fb5993c8af9b51246483608d1e65970d67
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146581
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
To enable our tests to spawn a new isolate in a new group, this CL
adds a `{bool newIsolateGroup}` parameter to the internal
`Isolate._spawnFunction` native and moves that native to
`dart:_internal`, thereby allowing runtime/tests/vm/dart/* to access it.
It also adds various tests for lightweight AOT isolates, exercising
GC, communication, spawning, ...
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: I3940c30fb43d2475c58e6be78507da74ce64b60d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145941
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Snapshots which contain code are compiled with a particular null-safety
mode and it is not possible to change their mode at run time.
When running from such snapshot, VM now reads null-safety mode from
the snapshot if it is not specified at the command line.
This avoids the need for embedders to pass null-safety flag
used during snapshot generation also to the runtime, similarly to
other VM flags listed in VM_GLOBAL_FLAG_LIST (such as use_bare_instructions).
In addition, error for incompatibility of kernel libraries with
current null-safety mode is changed from ReportError (which attempts
to throw an exception) to a FATAL, because throwing an exception
crashes when bootstrapping from a kernel file.
Change-Id: I93a791825c25c2da4e33634f1c71736c17928fea
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146460
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Our TLAB sizes and maximum new space size constrain the number of
parallel mutator threads we can have. Having too many mutator threads
would cause constant races between threads to acquire TLABs.
In reality we should constrain the number of threads to be at most the
number of cores, since at most that many threads can run in parallel
(i.e. at the same time).
This CL extends the TreadPool implementation to be constrained by a
maximum size. Furthermore it makes each isolate group's have it's own
pool with constrained size and schedule all group member
mutator / message handler tasks on that pool.
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: I095c749adad827ab892f33713a32be594d7606d1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145382
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This reverts commit 250b84987d.
Reason for revert: Failures on FFI CI tests.
Original change's description:
> [vm] Mark snapshots that were compiled directly to ELF.
>
> Since the virtual addresses in ELF snapshots are the same as in
> separately saved debugging information, print the virtual address in
> non-symbolic frames again when running from a snapshot compiled directly
> to ELF.
>
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> Change-Id: Ie531953da7edd024cea02c0571e1e1dd7d7427eb
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145840
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Tess Strickland <sstrickl@google.com>
TBR=vegorov@google.com,rmacnak@google.com,dacoharkes@google.com,sstrickl@google.com
Change-Id: I1c5f58e9d9e11b994c1016970839f95b92885d43
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
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Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146220
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Instead of having special cases for the special sections and segments,
just add each to the appropriate array prior to calculating file offsets
and writing out the ELF file.
Also adds various checks to ensure that the contents of sections or
segments are not changed after their final size has been used to
determine memory and/or file offsets, and that new sections and
segments are not added after the section header and program header
tables have been finalized.
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Change-Id: I194b37a65b153a47c947e90930c4fe90d658d4e2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145783
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Since the virtual addresses in ELF snapshots are the same as in
separately saved debugging information, print the virtual address in
non-symbolic frames again when running from a snapshot compiled directly
to ELF.
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Change-Id: Ie531953da7edd024cea02c0571e1e1dd7d7427eb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145840
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Martin Kustermann