Flat cons-strings point directly to the internalized version of the string. This makes reinternalization much faster.
BUG=
Review-Url: https://codereview.chromium.org/1932663002
Cr-Commit-Position: refs/heads/master@{#35852}
Reason for revert:
Caused a performance regression in TurboFan and did not improve in a significant way Ignition's performances.
Original issue's description:
> [ignition] Inline the binary op TurboFan code stubs in the bytecode handlers.
>
> Adds a Generate method to the stubs that can be used to embed the graph directly in the bytecode handlers.
>
> Committed: https://crrev.com/e8caf78ff2a9f7d50ac9b47f6b4c80f92b69914a
> Cr-Commit-Position: refs/heads/master@{#35696}
TBR=bmeurer@chromium.org,rmcilroy@chromium.org,machenbach@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
Review-Url: https://codereview.chromium.org/1927873002
Cr-Commit-Position: refs/heads/master@{#35851}
This is a preparatory change to only use the class in question when
allocating a CompilationInfo on the C-heap for a compilation job. As a
next step we will make CompilationInfoWithZone disappear and make the
CompilationJob be the one C-heap allocated object.
R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/1931573003
Cr-Commit-Position: refs/heads/master@{#35848}
Currently we already have tools to extract C++ symbols of d8, and output the
statistics result. This patch creates two scripts, one is to use exsisting tools
to extract C++ symbols and dump to output, the other collects all symbols and
merges them into v8 log. The format of C++ symbols in v8 log is:
cpp,start_address,size,symbol_name
BUG=v8:4906
LOG=n
Review-Url: https://codereview.chromium.org/1884493003
Cr-Commit-Position: refs/heads/master@{#35841}
Rolling v8/buildtools to cdbd50759bf2289d2c9d3f1f7d02239b4b4b1209
Rolling v8/tools/clang to 4652e9c8cea11f68101411f5826eca51b4838eda
Rolling v8/tools/gyp to e24c83726b7294179f479a683eeb351568fcc4ee
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review-Url: https://codereview.chromium.org/1926883003
Cr-Commit-Position: refs/heads/master@{#35839}
Return the empty string from StringPad if the filler argument is the empty
string, effectively returning the string unchanged in StringPadStart and
StringPadEnd.
```
"foo".padStart(100000, "") -> "foo"
```
BUG=v8:4957, v8:4954
LOG=N
R=littledan@chromium.org
Review-Url: https://codereview.chromium.org/1926773003
Cr-Commit-Position: refs/heads/master@{#35837}
The legacy function declaration locations from Annex B 3.2 and 3.4 do not
apply for generator declarations. This patch cracks down on those usages,
which is tested for by new incoming test262 tests.
BUG=v8:4824
LOG=Y
R=adamk
Review-Url: https://codereview.chromium.org/1900033003
Cr-Commit-Position: refs/heads/master@{#35835}
The status FAILED and BAILED_OUT only distinguishes between whether an
exception is pending or not. Such a distinction is obsolete by now as
all callers check for pending exceptions directly. Also it is impossible
for any concurrent part of the job to actually set a pending exception,
hence even the assertion that the concurrent part does not return FAILED
is obsolete.
R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/1926693003
Cr-Commit-Position: refs/heads/master@{#35834}
This is needed by Blink to implement the Custom Elements spec.
BUG=v8:4261
LOG=y
Review-Url: https://codereview.chromium.org/1910253005
Cr-Commit-Position: refs/heads/master@{#35833}
This moves the common code for allocating a compilation job into one
single place in the compilation pipeline. This will make it easier to
reason about involved lifetimes.
R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/1923293002
Cr-Commit-Position: refs/heads/master@{#35831}
Now that the GC team has landed the appropriate changes to ensure that the top
page of the address space is never used for allocation, the inlined fast-case
allocation path in the CodeAssembler can be micro-optimized to an add to top
followed by an unsigned compare to limit, eliding a no-longer-needed overflow
check.
Review-Url: https://codereview.chromium.org/1923803003
Cr-Commit-Position: refs/heads/master@{#35830}
This addresses Cortex-A53 errata 819472, 826319, 827319 and 824069.
Note that using "civac" rather than "cvau" doesn't appear to affect
performance at all.
BUG=
Review-Url: https://codereview.chromium.org/1921173004
Cr-Commit-Position: refs/heads/master@{#35828}
This makes sure that the testing pipeline withing the FunctionTester
class only performs AST analysis and deoptimization preparation when
graphs are generated from the AST (as opposed to from bytecode).
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/1928523002
Cr-Commit-Position: refs/heads/master@{#35827}
Trace-opt/trace-deopt output is ambiguous if multiple functions share
the same name. This change adds file names to this output behind the
--trace-file-names flag to reduce this ambiguity.
R=ofrobots@google.com
BUG=
Review URL: https://codereview.chromium.org/1920873003
Cr-Commit-Position: refs/heads/master@{#35824}
This is necessary to eventually build a turbofan graph.
BUG=v8:4907
LOG=n
Review URL: https://codereview.chromium.org/1901713003
Cr-Commit-Position: refs/heads/master@{#35820}
Reason for revert:
Creates a spike of OOM(v8) crashers on Win32.
Original issue's description:
> [heap] Uncommit pooled pages concurrently
>
> - Move the concurrent unmapping to MemoryAllocator
> - Hide (private) members where possible
> - MemoryAllocator:Free is now the bottleneck for freeing
> - Pooled pages are either allocated from a set of pooled pages are obtained
> through work stealing from the concurrent unmapper
>
> BUG=chromium:605866, chromium:581412
> LOG=N
>
> Committed: https://crrev.com/2158df87116906160cebc3ad20c97f454822da03
> Cr-Commit-Position: refs/heads/master@{#35797}
TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:605866, chromium:581412
Review URL: https://codereview.chromium.org/1925563003
Cr-Commit-Position: refs/heads/master@{#35819}
Uses now the same location chromium uses and which some tools
expect.
BUG=chromium:474921
LOG=n
Review URL: https://codereview.chromium.org/1929473002
Cr-Commit-Position: refs/heads/master@{#35817}
This commit introduces IgnitionStatisticsExtension, which provides
methods for accessing Ignition statistics and counters from JavaScript.
The extension is registered when FLAG_ignition and
FLAG_trace_ignition_dispatches are both enabled.
For the moment, the only exposed function is
getIgnitionDispatchCounters(), which allows to retrieve Ignition
dispatch counters as a JavaScript object.
BUG=v8:4899
LOG=N
Review URL: https://codereview.chromium.org/1899133004
Cr-Commit-Position: refs/heads/master@{#35816}
Between the miss and patching, we run user code. That may already patch the same code. IC refactoring broke this (again), so including a regression test this time around.
BUG=chromium:601392
LOG=n
Review URL: https://codereview.chromium.org/1925583002
Cr-Commit-Position: refs/heads/master@{#35811}
To land and test wrapper tracing incrementally, we will use both, and parts
which are expected to work with the tracing will be removed from
V8GCController's handle visiting.
LOG=no
BUG=468240
Review URL: https://codereview.chromium.org/1925573002
Cr-Commit-Position: refs/heads/master@{#35809}
port ef49c6b11a (r35792)
original commit message:
Default (and only way) is now to retrieve a tagged object.
BUG=
Review URL: https://codereview.chromium.org/1924643004
Cr-Commit-Position: refs/heads/master@{#35808}
