The tail call implementation is hidden behind the --harmony-tailcalls
flag, which is off-by-default (and has been unstaged since February).
It is known to be broken in a variety of cases, including clusterfuzz
security issues (see sample Chromium issues below). To avoid letting
the implementation bitrot further on trunk, this patch removes it.
Bug: v8:4698, chromium:636914, chromium:724746
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I9cb547101456a582374fdf7b1a3f044a9ef33e5c
Reviewed-on: https://chromium-review.googlesource.com/569069
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46651}
Removes the --ignition flag which is now on by default. Adds a
--stress-fullcodegen flag which enables running all functions supported
by fullcodegen to be compiled by fullcodegen.
This will enable moving parser internalization later when we are not
stressing fullcodegen or compiling asm.js functions.
BUG=v8:5203, v8:6409, v8:6589
Change-Id: I7fa68016d4e734755434ec0b4e749ef65ffa7f4e
Reviewed-on: https://chromium-review.googlesource.com/565569
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46635}
This adds a convenience method for the common Smi to int conversion
pattern.
Bug:
Change-Id: I7d7b171c36cfec5f6d10c60f1d9c3e06e3aed0fa
Reviewed-on: https://chromium-review.googlesource.com/563205
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46516}
V8's catch prediction mechanism tries to predict whether a thrown
exception will be caught, just by looking at the current call stack.
At the time when catch prediction was first introduced, only a few
builtins (mostly related to Promise and Generator) could end up being
fed into the catch prediction mechanism. This is no longer the case now
that builtins are used in new ways, e.g. Array.p.forEach's continuation
builtins.
This CL removes the need to explicitly mark all builtins visible to the
StackFrameIterator as CAUGHT/UNCAUGHT/PROMISE, and instead defaults to
treating unmarked builtins as UNCAUGHT.
BUG=v8:6536
Change-Id: Ibdc106a91b2b0ffb93099433077642cad02c71e2
Reviewed-on: https://chromium-review.googlesource.com/555518
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46357}
Both Ignition and TurboFan have been enabled by default for a while.
This just disentangles the implication between those two flags and sets
the --ignition individually. They can now be controlled individually.
R=rmcilroy@chromium.org
BUG=v8:6408
Change-Id: I08eca85120160efa5868b5ca36d1613964ed82eb
Reviewed-on: https://chromium-review.googlesource.com/527637
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45800}
DebugInfo was very closely tied to break point support:
* It contained only information relevant to break points.
* It was created and freed by break point implementation.
* Existence of a DebugInfo on the shared function info implied existence of
break points.
This CL is a step towards making DebugInfo usable by other debugging
functionality such as block coverage by decoupling it from break point support,
which is now only one kind of information stored on the DebugInfo object.
BUG=v8:6000
Review-Url: https://codereview.chromium.org/2909893002
Cr-Commit-Position: refs/heads/master@{#45640}
Most callers passed kFinalizeIncrementalMarkingMask, so use that as
a default argument (not using default argument syntax to avoid including
heap.h in cctest.h).
Change-Id: I904f1eb3a0f5fdbe63eab16f6a6f01d04618645d
Reviewed-on: https://chromium-review.googlesource.com/488104
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44950}
We can use TUPLE2 or TUPLE3 for structs that do not need special
handling by deoptimizer and compiler.
This frees up a few instance types, so that adding the next few
new structs will not cause ABI compatibility to break.
R=mstarzinger@chromium.org
Review-Url: https://codereview.chromium.org/2811183005
Cr-Commit-Position: refs/heads/master@{#44685}
With precise binary code coverage, the reported count is either 0 or 1.
We only report 1 the first time we collect coverage data after the
function has been executed.
Since we do not care about the accurate execution count, we can optimize
the function once it has been executed once.
Also change best effort coverage to be implicitly binary.
R=caseq@chromium.org, jgruber@chromium.org, pfeldman@chromium.org
BUG=v8:5808
Review-Url: https://codereview.chromium.org/2766573003
Cr-Commit-Position: refs/heads/master@{#44074}
Proposed behaviour:
- StepNext at return position go into next function call (no changes with current behavior, but implemented in v8::Debug instead of hack on inspector side);
- StepOut at return position go into next non-current function call.
We need this to have better stepping in cases with native functions, blackboxed functions and/or different embedder calls (e.g. event listeners).
New behavior could be illustrated with two examples (for more see stepping-with-natives-and-frameworks test):
- let's assume that we've blackboxed callAll function, this function just takes its arguments and call one after another:
var foo = () => 1;
callAll(foo, foo, () => 2);
If we break inside of first call of function foo. Then on..
..StepNext - we're able to reach second call of function foo,
..StepOut - we're able to reach () => 2 call.
- let's consider case with native function:
[1,2,3].map(x => x * 2)
If we break inside of first callback call, then with StepNext we can iterate through all calls of callback, with StepOut we go to next statement after .map call.
Implementation details:
- when we request break we schedule step-in function call for any step action at return position and for step-in at any position,
- when we request StepOut at return position - we mark current function as needed-to-be-ignored inside of PrepareStepIn(function) call,
- when we request StepOut at not return position - we set break at return position and ask debugger to just repeat last step action on next stepping-related break.
Design doc: https://docs.google.com/document/d/1ihXHOIhP_q-fJCA0e2EiXz_Zr3B08KMjaPifcaqZ60Q/edit
BUG=v8:6118,chromium:583193
R=dgozman@chromium.org,yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2758483002
Cr-Commit-Position: refs/heads/master@{#44028}
This fixes the catch predictions for the following builtins --
AsyncFunctionAwaitCaught
AsyncFunctionAwaitUncaught
PromiseResolveClosure
ResolvePromise
PromiseResolve
Added tests for each.
Added whitelist for builtins behind a flag.
BUG=chromium:691875
Change-Id: I816cafdb69f0c9f1eefc440a0a44c36713d0b7dc
Reviewed-on: https://chromium-review.googlesource.com/450894
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43725}
Cleanup CHECK_EQ order and simplify CHECK_EQ(true/false).
Cleanup callorder for negative numbers
Cleanup callorder order for capital letter constants.
Cleanup callorder for test.x checks.
BUG=
Review-Url: https://codereview.chromium.org/2677183002
Cr-Commit-Position: refs/heads/master@{#42997}
- Remove obsolete BreakLocatorType.
- Perform PrepareStepOnThrow after OnException event, in case stepping
was scheduled in the exception event.
- Use frame count instead of frame pointer for stepping. Frame pointer
is not reliable due to possible deopts.
- Consistently check for inlined functions in inlined frames.
- Use SharedFunctionInfo in FloodWithOneshot and EnsureDebugInfo.
R=jgruber@chromium.org
BUG=v8:5901
Review-Url: https://codereview.chromium.org/2664793002
Cr-Commit-Position: refs/heads/master@{#42878}
This API will allow DevTools to intercept out-of-memory condition,
increase the heap limit and schedule heap snapshot.
BUG=chromium:675911
Review-Url: https://codereview.chromium.org/2621873003
Cr-Commit-Position: refs/heads/master@{#42225}
The inspector cannot deal with breaking inside of debug-evaluate.
There is therefore no point in supporting that in the debugger.
The optional additional context parameter for debug-evaluate also
can be removed since it's not being used.
R=jgruber@chromium.org
BUG=v8:5530
Review-Url: https://codereview.chromium.org/2580323002
Cr-Commit-Position: refs/heads/master@{#41791}
Debugging API is still in use by Node.
Revert "[debug] remove deprecated debug command message queue."
This reverts commit abdbfc953d.
Revert "[debug] mark more unused debug API as deprecated."
This reverts commit d5ada19ce7.
BUG=v8:5530
Review-Url: https://codereview.chromium.org/2537313005
Cr-Commit-Position: refs/heads/master@{#41427}
* introduced v8::DebugInterface::ChangeBreakOnException(Isolate*,ExceptionBreakState);
* migrated inspector to new API;
* added cctest for new API;
* added inspector test for setPauseOnExceptionState.
BUG=chromium:652939,v8:5510
R=dgozman@chromium.org,yangguo@chromium.org
Review-Url: https://chromiumcodereview.appspot.com/2396193002
Cr-Commit-Position: refs/heads/master@{#40413}
Now callers of Heap::CollectGarbage* functions need to
specify the reason as an enum value instead of a string.
Subsequent CL will add stats counter for GC reason.
BUG=
Review-Url: https://codereview.chromium.org/2310143002
Cr-Commit-Position: refs/heads/master@{#39239}
Previously, we would both instrument the code, and add/remove
BreakPointInfo objects through BreakLocation. This is bad design and
unsuitable for having two different code kinds.
We would now add/remove BreakPointInfo objects, and use that as source
of truth when instrumenting the code. If we have both bytecode and FCG
code, we would simply apply these break points twice to either.
Notable changes:
- Removed many functionality from BreakLocation.
- Instrumentation (patching code for breaks) happens by applying break
point info onto code.
- Instrumentation (code patching) is done by the BreakIterator. For
bytecode, it's BytecodeArrayBreakIterator. For FCG code, it's
CodeBreakIterator.
- Changes to code instrumentation mostly involves clearing current
instrumentation and then (re-)applying break points.
- DebugInfo can now reference both bytecode and FCG code.
R=jgruber@chromium.org, mstarzinger@chromium.org
BUG=v8:5265
Review-Url: https://codereview.chromium.org/2238893002
Cr-Commit-Position: refs/heads/master@{#38596}
This changes many interfaces to accept StandardFrames instead of
JavaScriptFrames, and use the StackTraceFrameIterator instead of the
JavaScriptFrameIterator.
Also, the detailed frame information array now contains the script in
addition to the function, as wasm frames are not associated to any
javascript function.
This is a rebase of (https://codereview.chromium.org/2069823003/), since clemensh's internship has ended.
R=yangguo@chromium.org,ahaas@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2109093003
Cr-Commit-Position: refs/heads/master@{#37379}
Since the generic GetCallingContext is deprecated, but there's still the
use case for the debugger to get the currently debugged context while in
the debug context, add a convenience API for it.
Note that EventDetails already exposes this context, but the embedder
might not necessarily have the EventDetails around.
R=verwaest@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2040853003
Cr-Commit-Position: refs/heads/master@{#36751}
Script position calculation logic (i.e. line & column numbers for a
given code position) is now based on a single method
Script::GetPositionInfo(). Refactored related code in isolate.cc and
js/messages.js to use the new method. The line_ends accessor is still
in use by chromium and thus cannot be removed yet.
R=yangguo@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2002993002
Cr-Commit-Position: refs/heads/master@{#36458}
Script position calculation logic (i.e. line & column numbers for a
given code position) is now based on a single method
Script::GetPositionInfo(). Refactored related code in isolate.cc and
js/messages.js to use the new method. The line_ends accessor is still
in use by chromium and thus cannot be removed yet.
R=yangguo@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2003483002
Cr-Commit-Position: refs/heads/master@{#36398}
Script position calculation logic (i.e. line & column numbers for a
given code position) is now based on a single method
Script::GetPositionInfo(). Refactored related code in isolate.cc and
js/messages.js to use the new method and removed the line_ends JS
accessor.
R=yangguo@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/1986173002
Cr-Commit-Position: refs/heads/master@{#36359}
