This fixes the runtime profiler to no longer assume that seeing an
optimized frame on the stack implies the underlying function is not
being interpreted when entered normally. This no longer holds with code
generated for OSR directly from bytecode (not installed on function).
R=rmcilroy@chromium.org
TEST=mjsunit/regress/regress-crbug-632800
BUG=chromium:632800
Review-Url: https://codereview.chromium.org/2208603005
Cr-Commit-Position: refs/heads/master@{#38360}
This makes sure we prevent a tier-up for function which also have an
optimized activation of OSR code on the stack. In case the OSR code
deoptimizes, it needs the bytecode to still be around.
R=rmcilroy@chromium.org
TEST=mjsunit/regress/regress-5262
BUG=v8:5262
Review-Url: https://codereview.chromium.org/2206363004
Cr-Commit-Position: refs/heads/master@{#38359}
Reason for revert:
[Sheriff] Leads to mac asan failures:
https://build.chromium.org/p/client.v8/builders/V8%20Mac64%20ASAN/builds/7835
Original issue's description:
> [api] Clean up scopes and precheck instantiations cache
>
> Make sure all the scopes used in api-natives.cc have inlineable constructors
> and destructors. Additionally directly precheck the instantiations cache before
> trying to enter the InvokeScope which sets the save_context.
>
> BUG=chromium:630217
>
> Committed: https://crrev.com/a2496b942cad524f0f3144b107936eaa9a7c9fd5
> Cr-Commit-Position: refs/heads/master@{#38346}
TBR=yangguo@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:630217
Review-Url: https://codereview.chromium.org/2216903003
Cr-Commit-Position: refs/heads/master@{#38356}
We don't need to add stability dependencies on JSObject prototypes when
storing to an element, because we do the map check (and thereby guard
the elements kind) and we also properly deoptimize on holes if the array
protector is not usable.
R=verwaest@chromium.org
BUG=chromium:616709
Review-Url: https://codereview.chromium.org/2198833002
Cr-Commit-Position: refs/heads/master@{#38355}
Rolling v8/build to f0243d787961584ac95a86e7dae897b9b60ea674
Rolling v8/buildtools to 9c6ad6f5cbc2f30989edc3504ec7f9d360542512
Rolling v8/tools/clang to 0b06ba9e49a0cba97f6accd71a974c1623d69e16
Rolling v8/tools/mb to 60b89880ddfbccdc978f3c1562b2431119aea3d4
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review-Url: https://codereview.chromium.org/2211333002
Cr-Commit-Position: refs/heads/master@{#38354}
When parsing a eagerly-parsed-but-lazily-compiled function, we
used to put some of its AST nodes into a discardable Zone. This
CL puts the function Scope, its inner Scopes and the related AST
nodes (Declarations, VariableProxys) into the temporary Zone
too. This reduces peak memory usage and enables future work to
keep the temporary Zone around for later compilation.
BUG=
Review-Url: https://codereview.chromium.org/2210243002
Cr-Commit-Position: refs/heads/master@{#38348}
Make sure all the scopes used in api-natives.cc have inlineable constructors
and destructors. Additionally directly precheck the instantiations cache before
trying to enter the InvokeScope which sets the save_context.
BUG=chromium:630217
Review-Url: https://codereview.chromium.org/2206773003
Cr-Commit-Position: refs/heads/master@{#38346}
The contract is that the method is only invoked when there are no elements on
the prototype, and this elements type forbids accessor elements. So it is safe
to limit the search to the end of the backing store.
BUG=chromium:634269, v8:5162
R=cbruni@chromium.org, mstarzinger@chromium.org
Review-Url: https://codereview.chromium.org/2209273002
Cr-Commit-Position: refs/heads/master@{#38344}
This adds the possibility to address test cases in the
status file with the variant under which the test is running.
This is only allowed in top-level sections.
Example:
[{
'test-case': [PASS, SLOW],
}]
['variant == foo', {
'test-case': [FAIL],
}]
The test case "test-case" is marked as slow in all variants.
Additionally, in variant foo, it'll be expected to fail.
This CL also exemplifies the new feature with test cases
running under the ignition_turbofan variant. The
corresponding legacy flag is deprecated.
BUG=v8:5238
Review-Url: https://codereview.chromium.org/2203013002
Cr-Commit-Position: refs/heads/master@{#38342}
Only basic things for now, but enough, for example, to emit
mov rax, [rax+0xc]
instead of
mov rax, 0x3
mov rdx, [rdx+rax*4]
on x64.
BUG=
Review-Url: https://codereview.chromium.org/2211633003
Cr-Commit-Position: refs/heads/master@{#38338}
This adds the missing lazy bailout point when defining accessor pairs
within object literals via Runtime::kDefineAccessorPropertyUnchecked.
The runtime function in question can indeed trigger a lazy deopt due
to a DependentCode::kPrototypeCheckGroup dependency.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-633585
BUG=chromium:633585
Review-Url: https://codereview.chromium.org/2207413002
Cr-Commit-Position: refs/heads/master@{#38336}
References in code objects to new-space embedded objects have to be
recorded in a remembered set so that they get updated by the garbage
collector.
TEST=cctest/test-serialize/CodeSerializerEmbeddedObject
R=ulan@chromium.org, yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2200333004
Cr-Commit-Position: refs/heads/master@{#38335}
Compilation breaks when compiling v8 through Chromium using GYP. The isssue
started to appear after https://codereview.chromium.org/2190973003 landed.
It happens because trace_event_common.h header is on different location if we
are compiling v8 through Chromium compared to when we are compiling v8 standalone.
BUG=
Review-Url: https://codereview.chromium.org/2207943002
Cr-Commit-Position: refs/heads/master@{#38333}
This will allow for using DoParseLazy on a background thread, so we can
also parse inner functions on the background thread.
BUG=v8:5215
R=adamk@chromium.org,marja@chromium.org
Review-Url: https://codereview.chromium.org/2201423002
Cr-Commit-Position: refs/heads/master@{#38332}
This removes the ability to specify a catch prediction for exception
handler tables that are based on return addresses. The encoding for
handlers still looks the same to keep it in sync with tables based on
ranges, just no payload is stored in the respective bits.
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2205893002
Cr-Commit-Position: refs/heads/master@{#38327}
An infinite recursion can be triggered when NoSideEffectToString is
called on an error object with its name property set to itself.
BUG=633998
Review-Url: https://codereview.chromium.org/2206313002
Cr-Commit-Position: refs/heads/master@{#38325}
Thrown exceptions must be handled before another exception is thrown.
This fixes all remaining test failures exposed by not clearing pending
exceptions in JSEntryStub.
BUG=v8:5259
Review-Url: https://codereview.chromium.org/2207923002
Cr-Commit-Position: refs/heads/master@{#38324}
These tests all called assertUnreachable within a try/catch block.
BUG=v8:5246
Review-Url: https://codereview.chromium.org/2209663003
Cr-Commit-Position: refs/heads/master@{#38323}
Use a single CheckMaps node instead of the sequence of LoadField,
ReferenceEqual and CheckIf. This also makes it easier to eliminate
the COW check if there are multiple of them in a row.
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2216453002
Cr-Commit-Position: refs/heads/master@{#38321}
port cdae865436 (r38292)
original commit message:
A corresponding flag was added as well to help us find out what breaks when we
do not clear pending exceptions on each JS entry.
BUG=
Review-Url: https://codereview.chromium.org/2212733002
Cr-Commit-Position: refs/heads/master@{#38320}
Rolling v8/build to c6b327c244be25a972266cad3228279266a03c66
Rolling v8/buildtools to 88c6fc5bde77b9477345f0885cd88d4a57ad1844
Rolling v8/tools/mb to 72a708590a056993adf080a92211ddc8221010e7
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review-Url: https://codereview.chromium.org/2212753002
Cr-Commit-Position: refs/heads/master@{#38319}
Promise.resolve
Instead of creating resolve and reject closures, directly
call ResolvePromise after creating the promise.
Using the following as a microbenchmark --
```
var b = 0;
var start = performance.now();
for (var i = 0; i < 1000000; i++) {
Promise.resolve(1).then((val) => {
b += val;
if (b == 1000000) print(performance.now() - start)
});
}
```
I see a 16.01% improvement over 5 runs with this patch.
BUG=v8:5046
Review-Url: https://codereview.chromium.org/2143553002
Cr-Commit-Position: refs/heads/master@{#38318}
Reason for revert:
Mac64 ASAN failure. https://build.chromium.org/p/client.v8/builders/V8%20Mac64%20ASAN/builds/7810/steps/Check/logs/Threading4
Original issue's description:
> [Reland][Tracing] Embed V8 runtime call stats into tracing.
>
> Currently we have V8 RuntimeCallStats that is independently from tracing when
> running d8 with flag --runtime_call_stats. This patch embeds V8 runtime call
> stats into tracing, by having a global table of runtime call counters each
> isolate, resetting the table each time we enter a top level trace event, and
> dumping the table for each top level trace event. This will make trace file more
> compat, as well as enable runtime call stats in tracing system.
>
> This patch adds ~5% overhead to V8 when the category is enabled, we measure the
> overhead by running a script when category is enabled.
>
> BUG=v8:5089
>
> Committed: https://crrev.com/d014866173eaa2b548c566217b2c94b1d49385fa
> Committed: https://crrev.com/1ca3b73bba4a7253ca8eeef39321d70e7d414331
> Cr-Original-Commit-Position: refs/heads/master@{#38270}
> Cr-Commit-Position: refs/heads/master@{#38314}
TBR=cbruni@chromium.org,fmeawad@chromium.org,machenbach@chromium.org,bmeurer@chromium.org,adamk@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5089
Review-Url: https://codereview.chromium.org/2200373003
Cr-Commit-Position: refs/heads/master@{#38315}
Currently we have V8 RuntimeCallStats that is independently from tracing when
running d8 with flag --runtime_call_stats. This patch embeds V8 runtime call
stats into tracing, by having a global table of runtime call counters each
isolate, resetting the table each time we enter a top level trace event, and
dumping the table for each top level trace event. This will make trace file more
compat, as well as enable runtime call stats in tracing system.
This patch adds ~5% overhead to V8 when the category is enabled, we measure the
overhead by running a script when category is enabled.
BUG=v8:5089
Committed: https://crrev.com/d014866173eaa2b548c566217b2c94b1d49385fa
Review-Url: https://codereview.chromium.org/2187693002
Cr-Original-Commit-Position: refs/heads/master@{#38270}
Cr-Commit-Position: refs/heads/master@{#38314}
