Allocate feedback vectors lazily when the function's interrupt budget has
reached a specified threshold. This cl introduces a new field in the
ClosureFeedbackCellArray to track the interrupt budget for allocating
feedback vectors. Using the interrupt budget on the bytecode array could
cause problems when there are closures across native contexts and we may
delay allocating feedback vectors in one of them causing unexpected
performance cliffs. In the long term we may want to remove interrupt budget
from bytecode array and use context specific budget for tiering up decisions
as well.
Bug: v8:8394
Change-Id: Ia8fbb71f5e8543a92f14c44aa762973da82d445c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520719
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60450}
Omit user roots when raw heap snapshots are used, i.e., when
the gn flag v8_enable_raw_heap_snapshots is enabled. For regular
Chrome production builds this is not the case.
Blink CL: https://crrev.com/c/1529096
Bug: chromium:936797
Change-Id: I5ae0ec1ecfab9a76352d8ce927d1c40e707262cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528994
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60351}
This takes heap-inl.h out of the "Giant Include Cluster".
Naturally, that means adding a bunch of explicit includes
in a bunch of places that relied on transitively including
them before.
As of this patch, no header file outside src/heap/ includes
heap-inl.h.
Bug: v8:8562,v8:8499
Change-Id: I65fa763f90e66afc30d105b9277792721f05a6d4
Reviewed-on: https://chromium-review.googlesource.com/c/1459659
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59617}
If enable_omit_source_positions is true (defaults to false), source
position tables are not generated when compiling bytecode. They will
then be regenerated when exceptions are thrown.
This adds a new function Compiler::CollectSourcePositions which given a
SharedFunctionInfo with bytecode but no source position table re-parses
and regenerates the bytecode but this time with source positions
collection enabled. Note this will reparse all inner functions that
have previously been compiled since the preparse data is no longer
available.
With the flag enabled there still 18 test failures mostly related to
debugging.
v8: 8510
Change-Id: I46dff9818d8a89c901ba8ae8df94dcaca83aa658
Reviewed-on: https://chromium-review.googlesource.com/c/1385165
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59595}
Everything was including log.h through heap-inl.h, so remove that
include by moving the one user into heap.cc, and then fix all the
include errors.
This reduces the log.h include ball from ~550 to ~100.
Change-Id: I6d09bc2f365b48645fcfdc695a68ea12539a745d
Reviewed-on: https://chromium-review.googlesource.com/c/1424198
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58981}
Refactor all call sites to use the new API introduced in
https://crrev.com/c/1411347 and remove the legacy constructors.
R=mstarzinger@chromium.org
Bug: v8:8689, v8:8562
Change-Id: Id73686413726b2860f551dd200ef4b8823ef3034
Reviewed-on: https://chromium-review.googlesource.com/c/1415491
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58884}
Don't allocate feedback vectors and feedback metadata in lite mode.
Also updates to skip tests that require feedback vectors.
This is a reland of
https://chromium-review.googlesource.com/c/v8/v8/+/1384087 after skipping
the failing tests.
Bug: v8:8394
Change-Id: I7766533b85a144e62996ceed8d542cdc534feeb5
Reviewed-on: https://chromium-review.googlesource.com/c/1384307
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58363}
This reverts commit 62e86b88e5.
Reason for revert: Fails on arm sim lite debug: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20arm%20-%20sim%20-%20lite%20-%20debug/1075
Original change's description:
> Do not allocate feedback vectors and feedback metadata in lite mode
>
> Don't allocate feedback vectors and feedback metadata in lite mode.
> Also updates to skip tests that require feedback vectors.
>
> Bug: v8:8394
> Change-Id: I22c64a32c44bb8f25fb09003d6e9fc5a04e84f8a
> Reviewed-on: https://chromium-review.googlesource.com/c/1378173
> Commit-Queue: Mythri Alle <mythria@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58351}
TBR=rmcilroy@chromium.org,yangguo@chromium.org,mlippautz@chromium.org,mythria@chromium.org
Change-Id: I88fd37ea4e21aa2cc81eceb87ddb35c23224beae
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8394
Reviewed-on: https://chromium-review.googlesource.com/c/1384087
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58355}
Don't allocate feedback vectors and feedback metadata in lite mode.
Also updates to skip tests that require feedback vectors.
Bug: v8:8394
Change-Id: I22c64a32c44bb8f25fb09003d6e9fc5a04e84f8a
Reviewed-on: https://chromium-review.googlesource.com/c/1378173
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58351}
This patch gives DescriptorArray its own visitor id and its
own layout that is independent from the layout of WeakFixedArray.
This allows us to use raw 16-bit integers for keeping track of
the number of descriptors (total, non-slack, and marked).
As a side-effect, we save one word per descriptor array on 64-bit.
v8:8486
Change-Id: If8389dde446319e5b3491abc948b52539dba235c
Reviewed-on: https://chromium-review.googlesource.com/c/1349245
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57845}
This CL moves the two remaining IC stubs to builtins, generating a
dedicated builtin for each KeyedAccessStoreMode variant.
Bug: v8:7777
Change-Id: I540b3c3437adb94094771a19713e71ec8a349553
Reviewed-on: https://chromium-review.googlesource.com/c/1346095
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57719}
If a caller starts the sampling heap profiler and takes a snapshot, and
then deletes the snapshot before the sampling has completed, a
use-after-free will occur on the StringsStorage pointer.
The same issue applies for StartTrackingHeapObjects which shares the
same StringsStorage object.
Bug: v8:8373
Change-Id: I5d69d60d3f9465f9dd3b3bef107c204e0fda0643
Reviewed-on: https://chromium-review.googlesource.com/c/1301477
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57114}
Make heap profiler provide information about each sample currently
alive. That information can be used to build diagrams of memory
allocations over time.
BUG=chromium:889545
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Ibcbe2f5302263d0b3976ee4cd3601eff11375cae
Reviewed-on: https://chromium-review.googlesource.com/c/1285130
Commit-Queue: Alexei Filippov <alph@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56793}
It was shipped in Chrome 67.
Bug: v8:6791, v8:8238
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;luci.v8.try:v8_linux_noi18n_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I94d8f0aa18570452403a35dea270b18f155c970a
Reviewed-on: https://chromium-review.googlesource.com/1253604
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56310}
Add location information in heap snapshot for objects where the
constructor can be determined.
Bug: chromium:854097
Change-Id: Ieb2ab70a65809ecc9dfa0d73a33fa57add430465
Reviewed-on: https://chromium-review.googlesource.com/1179156
Commit-Queue: Dominik Inführ <dinfuehr@google.com>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55387}
No need to create allocation site for array literals in oneshot code since
they are executed only once. The interpreter emits a runtime call to
CreateArrayLiteralWithoutAllocationSite for creating literals in
oneshot code instead.
Change-Id: I285879c84759ff9e2ce281e9548112f52ce5e7d1
Reviewed-on: https://chromium-review.googlesource.com/1167843
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Chandan Reddy <chandanreddy@google.com>
Cr-Commit-Position: refs/heads/master@{#55349}
Start storing locations in heap snapshot file. Initial support
for closure, additional object types might be added in the future.
Needed to show source code locations for objects in the DevTools
heap snapshot viewer.
Bug: chromium:854097
Change-Id: I12659373ce1adf67b55c6a10ea1d0465fcdb4a10
Reviewed-on: https://chromium-review.googlesource.com/1174257
Commit-Queue: Dominik Inführ <dinfuehr@google.com>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55245}
This patch adds a variant of EmbedderGraph::AddEdge() which
allows the embedder to specify the name of an edge. The edges
added without name are element edges with auto-incremented indexes
while the edges added with names will be internal edges with
the specified names for more meaningful output in the heap
snapshot.
Refs: https://github.com/nodejs/node/pull/21741
Bug: v8:7938
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I8feefa2cf6911743e24b3b2024e0e849b0c65cd3
Reviewed-on: https://chromium-review.googlesource.com/1133299
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54412}
This CL surfaces AssemblerOptions to CodeAssembler::GenerateCode and
to pipeline methods. To allow forward declaring AssemblerOptions,
AssemblerBase::Options was moved out of the AssemblerBase class.
Bug: v8:6666
Change-Id: If9fc50d3d4767bb5dd39a0c3b6e094021f4cae2b
Reviewed-on: https://chromium-review.googlesource.com/1127039
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54286}
After liveedit removed - we do not need this context any more.
R=yangguo@chromium.orgTBR=clemensh@chromium.org
Bug: v8:5530
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Idb43d016d51b8048f6cd2ca590fd7510abcacb49
Reviewed-on: https://chromium-review.googlesource.com/1106802
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54273}
This completes the transition to Assembler::Options, which reduces
the assemblers's dependency on isolates, and there is now only one
way to create an Assembler, which is to use the options.
Note that some operations on assemblers still need an isolate, such
as GetCode(), and in these cases, the isolate is an additional
argument to the method.
R=jgruber@chromium.orgCC=mstarzinger@chromium.org
Change-Id: I413209d816c63a7c3640f1c226764693dcad1e7f
Reviewed-on: https://chromium-review.googlesource.com/1106169
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53925}
`SetBuildEmbedderGraphCallback`, unlike `SetWrapperClassInfoProvider`,
assumes a monolithic embedder that can provide all necessary information.
That is not the case for e.g. Node.js, which can e.g. provide multiple Node.js
instances per V8 Isolate, as well as native addons that may allocate resources
on their own.
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Ib53dfde82416dd69934b08623e27d674a483ac2d
Reviewed-on: https://chromium-review.googlesource.com/1082441
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53545}
Calls from embedded builtins to stubs are expensive due to the
indirection through the builtins constants table. This moves
all remaining Array constructor stubs to builtins.
Bug: v8:6666
Change-Id: I5989a7480697a506a1bae1929ddd2e3f1d655048
Reviewed-on: https://chromium-review.googlesource.com/1074759
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53399}
This reverts commit 2df5e7a7b6.
Reason for revert: Mystery crashes https://bugs.chromium.org/p/chromium/issues/detail?id=838805
Original change's description:
> [parser] Slice the source string where possible
>
> When internalizing string literals (for quoted strings or property names),
> try to create a sliced string of the source string rather than allocating
> a copy of the bytes.
>
> This will not work for string literals that contain escapes (e.g. unicode
> escapes), and currently does not support two-byte strings.
>
> Bug: chromium:818642
> Change-Id: I686e5ad36baecd1a84ce5e124118431249b6c980
> Reviewed-on: https://chromium-review.googlesource.com/1010282
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52898}
TBR=marja@chromium.org,yangguo@chromium.org,jarin@chromium.org,mlippautz@chromium.org,leszeks@chromium.org,verwaest@chromium.org
Change-Id: I598b6668c43a3e843e2dd8e60852b2b2f3461954
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:818642
Reviewed-on: https://chromium-review.googlesource.com/1039885
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52919}
When internalizing string literals (for quoted strings or property names),
try to create a sliced string of the source string rather than allocating
a copy of the bytes.
This will not work for string literals that contain escapes (e.g. unicode
escapes), and currently does not support two-byte strings.
Bug: chromium:818642
Change-Id: I686e5ad36baecd1a84ce5e124118431249b6c980
Reviewed-on: https://chromium-review.googlesource.com/1010282
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52898}
The function allocating objects in the test can be inlined in the middle
of the run. All allocations after inlining are currently not accounted.
This patch sums up allocations of the function and its outer function.
The difference between counts is now about 4%-6% (down from 15%).
Bug: chromium:834832
Change-Id: Iad071bd5bf53bb3527c9cb24d0a9ea38618c833c
Reviewed-on: https://chromium-review.googlesource.com/1021734
Reviewed-by: Ali Ijaz Sheikh <ofrobots@google.com>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52713}
The "Address" type is V8's general-purpose type for manipulating memory
addresses. Per the C++ spec, pointer arithmetic and pointer comparisons
are undefined behavior except within the same array; since we generally
don't operate within a C++ array, our general-purpose type shouldn't be
a pointer type.
Bug: v8:3770
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ib96016c24a0f18bcdba916dabd83e3f24a1b5779
Reviewed-on: https://chromium-review.googlesource.com/988657
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52601}
Currently a WeakMap key edge shows up as '<id> / WeakMap'. This patch
changes it to '<id> / key <KeyName> in WeakMap'.
Bug: chromium:827713
Change-Id: I0306bacdc331ab69739be88cf29d16a21187625f
Reviewed-on: https://chromium-review.googlesource.com/992035
Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52465}
