* introduced DebugInterface::PrepareStep and DebugInterface::ClearStepping method.
Inspector calls these methods only on pause and not interseted in calling this for not current break_id so we don't need to expose debug interface with break_id argument and can only check that current break_id is valid.
BUG=chromium:652939,v8:5510
R=yangguo@chromium.org,dgozman@chromium.org
Review-Url: https://chromiumcodereview.appspot.com/2423153002
Cr-Commit-Position: refs/heads/master@{#40450}
We introduced TracedValue into V8 tracing previously, this patch uses it to
build JSON string of runtime statistics instead of using stringstream as buffer.
BUG=v8:5089
LOG=N
Review-Url: https://chromiumcodereview.appspot.com/2418303002
Cr-Commit-Position: refs/heads/master@{#40443}
Moving the rest of the debugging code is blocked on making IsPromise inlinable.
BUG=v8:5343
Review-Url: https://chromiumcodereview.appspot.com/2431793003
Cr-Commit-Position: refs/heads/master@{#40440}
Taking similar approach as ia32 which also has 1 return register
eax (as per ia32's ABI) but uses edx as return register as well.
This will fix some failures on s390x where a function returns 2
values.
R=titzer@chromium.org, bmeurer@chromium.org
BUG=
LOG=N
Review-Url: https://chromiumcodereview.appspot.com/2426233002
Cr-Commit-Position: refs/heads/master@{#40439}
For fullcodegen the RuntimeProfiler has a shortcut that allows it to
tier up small functions earlier, when enough type feedback is available.
Port the same optimization for the Ignition+TurboFan pipeline.
R=mstarzinger@chromium.org
Review-Url: https://chromiumcodereview.appspot.com/2427283004
Cr-Commit-Position: refs/heads/master@{#40435}
This CL refactors the handling of metadata associated with WebAssembly
modules to reduce the duplicate marshalling of data from the C++ world
to the JavaScript world. It does this by wrapping the C++ WasmModule*
object in a Foreign that is rooted from the on-heap WasmCompiledModule
(which is itself just a FixedArray). Upon serialization, the C++ object
is ignored and the original WASM wire bytes are serialized. Upon
deserialization, the C++ object is reconstituted by reparsing the bytes.
This is motivated by increasing complications in implementing the JS
API, in particular WebAssembly.Table, which must perform signature
canonicalization across instances.
Additionally, this CL implements the proper base + offset initialization
behavior for tables.
R=rossberg@chromium.org,bradnelson@chromium.org,mtrofin@chromium.org,yangguo@chromium.org
BUG=v8:5507, chromium:575167, chromium:657316
Review-Url: https://chromiumcodereview.appspot.com/2424623002
Cr-Commit-Position: refs/heads/master@{#40434}
For binary operations that collect feedback (in Ignition), don't
canonicalize when the operation itself is already performed in
Float64. This is the first step to fix the performance difference
we still see between TurboFan and TurboFan+Ignition.
R=mythria@chromium.org
Review-Url: https://chromiumcodereview.appspot.com/2431363002
Cr-Commit-Position: refs/heads/master@{#40428}
During JSTypedLowering we can decide to insert PlainPrimitiveToNumber
operators on the inputs to still utilize pure Number operators, when
the type feedback on the numeric binary operation is NumberOrOddball.
However that is not beneficial if the inputs can be Strings, that is
we cannot statically rule out String based on input type, as that
inserts a ToNumber stub call into the hot code path.
This repairs the NavierStokes regression with Ignition on Octane.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/2432143003 .
Cr-Commit-Position: refs/heads/master@{#40427}
Similar to http://crrev.com/2410883003 we don't need to do a minus zero
check for the right hand side of CheckedInt32Add, because we already
know that the left hand side cannot be minus zero, and the only way that
addition can yield -0 is (-0) + (-0).
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/2431233003 .
Cr-Commit-Position: refs/heads/master@{#40421}
Using uint32 to store the the number of control outputs allows WebAssembly switches to have more than 2^16 case.
BUG=v8:5531
TEST=mjsunit/regress/wasm/regression-5531
R=titzer@chromium.org
Review-Url: https://chromiumcodereview.appspot.com/2425983002
Cr-Commit-Position: refs/heads/master@{#40420}
When the input to Number.parseInt is a HeapNumber in Signed32 range, we
can just return the (truncated) input value (i.e. we need to map -0 to
0 due to the ToString conversion).
R=jarin@chromium.org
Review-Url: https://chromiumcodereview.appspot.com/2432923002
Cr-Commit-Position: refs/heads/master@{#40419}
port 308788b306 (r40397)
original commit message:
Consistently collect CallIC feedback in fullcodegen and Ignition, even
for possibly direct eval calls, that were treated specially so far, for
no apparent reason. With the upcoming SharedFunctionInfo based CallIC
feedback, we might be able to even inline certain direct eval calls, if
they manage to hit the eval cache. More importantly, this patch
simplifies the collection and dealing with CallIC feedback (and as a
side effect fixes an inconsistency with feedback for super constructor
calls).
BUG=
Review-Url: https://chromiumcodereview.appspot.com/2429623005
Cr-Commit-Position: refs/heads/master@{#40416}
* 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}
Port 308788b306
Original commit message:
Consistently collect CallIC feedback in fullcodegen and Ignition, even
for possibly direct eval calls, that were treated specially so far, for
no apparent reason. With the upcoming SharedFunctionInfo based CallIC
feedback, we might be able to even inline certain direct eval calls, if
they manage to hit the eval cache. More importantly, this patch
simplifies the collection and dealing with CallIC feedback (and as a
side effect fixes an inconsistency with feedback for super constructor
calls).
R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
BUG=
LOG=N
Review-Url: https://codereview.chromium.org/2425243003
Cr-Commit-Position: refs/heads/master@{#40412}
Add support to collect feedback about oddballs in Add, Mul, Div and Modulus stubs.
Turbofan uses NumberOrOddball feedback to reduce the number of deoptimizations.
BUG=v8:4280, v8:5400
LOG=N
Review-Url: https://codereview.chromium.org/2406263002
Cr-Commit-Position: refs/heads/master@{#40407}
BranchIf and helpers were introduced when exporting the schedule from the RawMachineAssembler was not ensuring that the CFG was well-form. These methods, that were used to introduce blocks to ensure edge-split form, are now unnecessary.
BUG=
Review-Url: https://codereview.chromium.org/2426923002
Cr-Commit-Position: refs/heads/master@{#40402}
These intrinsics are unused now, and so we can drop all the code in
fullcodegen and Crankshaft that deals with those. TurboFan and Ignition
never tried to optimize those.
R=mstarzinger@chromium.org
BUG=v8:5049
Review-Url: https://codereview.chromium.org/2427673004
Cr-Commit-Position: refs/heads/master@{#40401}
MIPS64 doesn't support Word32 compare instructions. Instead it relies
that the values in registers are correctly sign-extended and uses
Word64 comparison instead. This behavior is correct in most cases,
but doesn't work when comparing signed with unsigned operands.
The solution proposed here tries to match a comparison of signed
with unsigned operand, and perform Word32Compare simulation only
in those cases. Unfortunately, the solution is not complete because
it might skip cases where Word32 compare simulation is needed, so
basically it is a hack.
BUG=
TEST=mjsunit/compiler/uint32
Review-Url: https://codereview.chromium.org/2391393003
Cr-Commit-Position: refs/heads/master@{#40398}
Consistently collect CallIC feedback in fullcodegen and Ignition, even
for possibly direct eval calls, that were treated specially so far, for
no apparent reason. With the upcoming SharedFunctionInfo based CallIC
feedback, we might be able to even inline certain direct eval calls, if
they manage to hit the eval cache. More importantly, this patch
simplifies the collection and dealing with CallIC feedback (and as a
side effect fixes an inconsistency with feedback for super constructor
calls).
R=mvstanton@chromium.org, mythria@chromium.org
BUG=v8:2206,v8:4280,v8:5267
Review-Url: https://codereview.chromium.org/2426693002
Cr-Commit-Position: refs/heads/master@{#40397}
When inlining JSCallConstruct in turbofan, receiver is initialized to model
the behaviour of constructor. When an implicit receiver is not required the
receiver value should be set to the hole value instead of undefined value.
When initializing the receiver via super calls, we check that the receiver
is the hole value.
BUG=chromium:653407
Review-Url: https://codereview.chromium.org/2424123002
Cr-Commit-Position: refs/heads/master@{#40396}
