Change-Id: I6dc02b3d9de16cc176eb97613bc0c7f0bb9b16eb
Reviewed-on: https://dart-review.googlesource.com/77013
Commit-Queue: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Auto-Submit: Ben Konyi <bkonyi@google.com>
Over the years, this debug-only code evolved to check that the current stack
pointer is below the last exit frame, which is obviously always the case.
Change-Id: I9b5e1a5462df5b3392b4541e40a9c57d33d25055
Reviewed-on: https://dart-review.googlesource.com/70960
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Régis Crelier <regis@google.com>
Also move InstructionDecode hot path into InstructionDecodeImpl.
This patch improves time to run SIMARM tests by 25-35% and improves
time spent in simulator when running gen_snapshot on Flutter by a
similar amount.
Functions to force inline were selected by looking at the VTune
profile of gen_snapshot generating script snapshot of the Flutter
Gallery on Windows.
Bug: https://github.com/dart-lang/sdk/issues/31684
Change-Id: Ifbfeaae252dfafb3b86b4f1eb7ca40f42bc3a252
Reviewed-on: https://dart-review.googlesource.com/31920
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
This reverts commit 5a022b9db6.
The reverted CL caused some redness on some vm and vm-precomp bots.
TBR=rmacnak@google.com
Change-Id: I9be670f3c3e341ec6d95082f288bc569834e38c7
Reviewed-on: https://dart-review.googlesource.com/13460
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Karl Klose <karlklose@google.com>
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
Fix accounting of guard pages to move the stack limit up instead of down.
Change-Id: I2f6577a12cf95707c186884f0bd3def03eac12ed
Reviewed-on: https://dart-review.googlesource.com/13381
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
This reverts commit af251ddfec.
Reason for revert: Crashes on Windows.
Original change's description:
> [vm] Prefer stack bounds from the system thread library for overflow checks.
>
> Before this change, we would assume all stacks have the size the VM specifies for threads it creates, but this won't be accurate for the initial thread or threads created by the embedder.
>
> Change-Id: I6605a88d6666a6f9d47fbe047d3fdd02aa22c80a
> Reviewed-on: https://dart-review.googlesource.com/10209
> Reviewed-by: Zach Anderson <zra@google.com>
TBR=rmacnak@google.com,zra@google.com
Change-Id: I96eaccdc8edf6e3d319827a63d168534bad0518e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/13106
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Before this change, we would assume all stacks have the size the VM specifies for threads it creates, but this won't be accurate for the initial thread or threads created by the embedder.
Change-Id: I6605a88d6666a6f9d47fbe047d3fdd02aa22c80a
Reviewed-on: https://dart-review.googlesource.com/10209
Reviewed-by: Zach Anderson <zra@google.com>
This CL includes db26c89347 (patch set #1)
with fix (patch set #2):
* Include simulator.h explicitly where it is required as it is no
longer included implicitly through other header files.
Original review: https://codereview.chromium.org/2995803002/
When running on the simulator for arm/arm64, compare-and-swap operations
used in VM were synchronized with simulator using mutex.
It heavily impacts performance when doing parallel marking due to high
contention (see #30317).
This synchronization was implemented in order to make simulated
LDREX/STREX instructions aware of CAS performed in VM.
This CL drops this synchronization between VM and simulator:
CAS operations in VM become regular, and simulator remembers value loaded
with load-exclusive and performs CAS when doing store-exclusive to catch
any concurrent modifications.
Speeds up gen_snapshot of flutter benchmark complex_layout from 9.2s
to 8.0s on my MacBook.
R=asiva@google.com
Review-Url: https://codereview.chromium.org/2999853002 .
When running on the simulator for arm/arm64, compare-and-swap operations
used in VM were synchronized with simulator using mutex.
It heavily impacts performance when doing parallel marking due to high
contention (see #30317).
This synchronization was implemented in order to make simulated
LDREX/STREX instructions aware of CAS performed in VM.
This CL drops this synchronization between VM and simulator:
CAS operations in VM become regular, and simulator remembers value loaded
with load-exclusive and performs CAS when doing store-exclusive to catch
any concurrent modifications.
Speeds up gen_snapshot of flutter benchmark complex_layout from 9.2s
to 8.0s on my MacBook.
R=asiva@google.com, rmacnak@google.com
Review-Url: https://codereview.chromium.org/2995803002 .
- Refactor the JumpToExceptionHandle code so that it is now built from
two pieces: JumpToFrame and RunExceptionHandler.
- Refactor the Simulator::Longjmp() code so that it is no longer
exception-specific. Instead it uses the RunExceptionHandler stub.
This makes it so that the JumpToFrame stub and Simulator::JumpToFrame
have the same semantics. This will make it easier to land the Rewind
changes I am working on.
There are some oddities for dbc.
BUG=
R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2503653002 .
i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
- Fix setting exit frame info to indicate when we are executing Dart code.
- Copy local pc to memory on call and return to make it accessible to the profiler. Since the profiler cannot access the local pc, the profiler is not accurate at the instruction level.
- Teach the profiler's stack walker that the stack grows up for Dart frames on DBC.
R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2250823002 .
