Collect type feedback in the bytecode handler for 'new' bytecode. The
earlier cl (https://codereview.chromium.org/2153433002/) was reverted
because that implementation did not collect allocation site feedback.
This regressed delta blue by an order of magnitude. This implementation
includes collection of allocation site feedback.
Reland of https://codereview.chromium.org/2190293003/ with a bug fix.
BUG=v8:4280, v8:4780
LOG=N
Review-Url: https://codereview.chromium.org/2225923003
Cr-Commit-Position: refs/heads/master@{#39120}
This patch arranges that property names are parsed in a single pass,
reporting the name as well as the type of the property, instead of
parsing qualifiers like 'static' or 'get' initially as names and then
re-parsing. This change is easier to reason about, very slightly (4%)
faster in some cases (although slower in other, less common ones, though
this slowdown will be fixed in an upcoming patch), and is a prerequisite
for separating the parsing of object and class literal properties, which
will become increasingly important as ECMAScript adds more class features.
This is a reland of https://codereview.chromium.org/2278153004/,
which fixes the issue causing the revert and adds more tests.
Review-Url: https://codereview.chromium.org/2300503002
Cr-Commit-Position: refs/heads/master@{#39056}
This makes sure the deoptimizer picks bytecode prepared for debugging
when materializing an interpreted frame if one is available. This is
normally done by the interpreter entry trampoline and hence needs to be
replicated by the deoptimizer.
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2271443003
Cr-Commit-Position: refs/heads/master@{#38815}
This flag was shipped on in 52, so it's due for removal. The patch includes
removing the deprecated and unused-in-Blink API Promise::Chain, and many
test updates.
R=adamk@chromium.org
BUG=v8:4633
Review-Url: https://codereview.chromium.org/2267033002
Cr-Commit-Position: refs/heads/master@{#38804}
Unskip test which failed with Intl support disabled, and avoid using Intl
objects within the test.
BUG=chromium:634273,chromium:634357,v8:5162
NOTRY=true
R=mstarzinger@chromium.org
Review-Url: https://codereview.chromium.org/2218743003
Cr-Commit-Position: refs/heads/master@{#38384}
Reason for revert:
[Sheriff] Fails on nosnap debug:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/8403
Original issue's description:
> [Interpreter] Collect type feedback for 'new' in the bytecode handler
>
> Collect type feedback in the bytecode handler for 'new' bytecode. The
> earlier cl (https://codereview.chromium.org/2153433002/) was reverted
> because that implementation did not collect allocation site feedback.
> This regressed delta blue by an order of magnitude. This implementation
> includes collection of allocation site feedback.
>
> BUG=v8:4280, v8:4780
> LOG=N
>
> Committed: https://crrev.com/9d5e6129c4c7f9cbfe81a5fad2a470f219fe137c
> Cr-Commit-Position: refs/heads/master@{#38364}
TBR=bmeurer@chromium.org,rmcilroy@chromium.org,balazs.kilvady@imgtec.com,mythria@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4280, v8:4780
Review-Url: https://codereview.chromium.org/2212343002
Cr-Commit-Position: refs/heads/master@{#38368}
Collect type feedback in the bytecode handler for 'new' bytecode. The
earlier cl (https://codereview.chromium.org/2153433002/) was reverted
because that implementation did not collect allocation site feedback.
This regressed delta blue by an order of magnitude. This implementation
includes collection of allocation site feedback.
BUG=v8:4280, v8:4780
LOG=N
Review-Url: https://codereview.chromium.org/2190293003
Cr-Commit-Position: refs/heads/master@{#38364}
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}
The flag was introduced for ignition development. It can only
be used when running ignition tests in isolation on the bots.
The bots only use ignition_turbo in isolation since a while
and don't pass the --ignition flag anymore.
BUG=v8:5238
Review-Url: https://codereview.chromium.org/2197123002
Cr-Commit-Position: refs/heads/master@{#38206}
This adds preliminary support for on-stack replacement from Ignition to
optimized code generated by TurboFan to the runtime profiler. Involved
heuristics (e.g. code size allowance) have been taken from existing code
without any re-evaluation in the new setting.
R=rmcilroy@chromium.org
BUG=v8:4764
Review-Url: https://codereview.chromium.org/2182183005
Cr-Commit-Position: refs/heads/master@{#38159}
This CL more or less reverts commit https://codereview.chromium.org/2107733002/
The use of the MathPow code stub that was introduced by that commit caused
problems on arm64, and the MathPow code stub was also an obstacle in the
implementation of parallel code generation.
In addition this CL turns on the mjsunit/wasm/embenchen tests for arm64
which were turned off because of problems with MathPow on arm64.
R=titzer@chromium.org, bradnelson@chromium.org
Review-Url: https://codereview.chromium.org/2166793002
Cr-Commit-Position: refs/heads/master@{#37911}
In int32 multiplication, if we have a positive integer as input, then we know we can't produce a -0 answer. The same is true if truncation is applied (x * y | 0). Without this information, we have to rather annoyingly check if the result of multiplication is 0, then OR the inputs to check for negativity, and possibly return -0. In TurboFan, we'll deopt in this case.
BUG=
Review-Url: https://codereview.chromium.org/2154073002
Cr-Commit-Position: refs/heads/master@{#37831}
This makes sure the {AstGraphBuilder} respects the catch-prediction that
is provided by the parser along with each {TryStatement}. This is needed
for try-blocks materialized by the parser not to influence predictions
users expect when using the debugger.
R=neis@chromium.org
TEST=mjsunit/debug-exceptions
BUG=v8:5183
Review-Url: https://codereview.chromium.org/2147573002
Cr-Commit-Position: refs/heads/master@{#37702}
This solves an issue with throws inside for-of always being marked as caught.
BUG=v8:5183
Review-Url: https://codereview.chromium.org/2146493002
Cr-Commit-Position: refs/heads/master@{#37686}
This removes the checking for use-def and def-use chain links from the
graph verification. Presence of such links can only be violated by a bug
in the actual {Node} implementation itself. That container class is also
covered by unit tests.
The verification in question was useful in the early days when the graph
implementation itself was prone to bugs. By now it has stabilized and
spending O(n^2) time during graph verification is too wasteful to still
be considered a reasonable trade-off.
R=jarin@chromium.org
TEST=unittests/NodeTest.*
Review-Url: https://codereview.chromium.org/2140973003
Cr-Commit-Position: refs/heads/master@{#37670}
This enables tests which rely on the context available at "debugger"
statements to be accurate. This is the case by now when deoptimization
information is available.
R=yangguo@chromium.org
BUG=v8:4055
Review URL: https://codereview.chromium.org/2129123002 .
Cr-Commit-Position: refs/heads/master@{#37604}
This enables tests which rely on the context available at "debugger"
statements to be accurate. This is the case by now when deoptimization
information is available.
R=mvstanton@chromium.org
BUG=v8:4035
Review-Url: https://codereview.chromium.org/2125773005
Cr-Commit-Position: refs/heads/master@{#37590}
While the test was useful to reproduce the issue locally it creates a lot of
heap pressure and causes all sorts of troubles (OOM, slowness) on the bots, so
let's drop it.
R=hpayer@chromium.org
Review-Url: https://codereview.chromium.org/2127803002
Cr-Commit-Position: refs/heads/master@{#37551}
The dependency would only happen if we have a smi overflow for the length and
have create a heap number. In this case the heap number would've to survive
until the array buffer is collected.
To avoid this dependency we track the length (as we previously used to).
BUG=chromium:625752
LOG=N
TEST=test/mjsunit/regress/regress-625752.js
R=hpayer@chromium.org
This reverts commit 1791d7bb9a.
Review-Url: https://codereview.chromium.org/2127643002
Cr-Commit-Position: refs/heads/master@{#37537}
The re-typer now only types a node if its inputs are all typed with the
exception of phi nodes. This works because all cycles in the graph have
to contain a phi node.
BUG=chromium:625558
Review-Url: https://codereview.chromium.org/2120243002
Cr-Commit-Position: refs/heads/master@{#37493}
A pointer comparison on the effect path states is not sufficient to
guarantee termination; we really need to check the actual nodes to
make sure we terminate properly, similar to what BranchElimination
does.
R=jarin@chromium.org
BUG=v8:5161
Review-Url: https://codereview.chromium.org/2112463002
Cr-Commit-Position: refs/heads/master@{#37389}
