New code should use nullptr instead of NULL.
This patch updates existing use of NULL to nullptr where applicable,
making the code base more consistent.
BUG=v8:6928,v8:6921
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I4687f5b96fcfd88b41fa970a2b937b4f6538777c
Reviewed-on: https://chromium-review.googlesource.com/718338
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48557}
When hitting objects that are allocated in the most recent lienar
allocation area, the concurrent marker currently has to bail out to the
main thread.
However, we only have to delay processing those objects until we are at
a safepoint, e.g. IM::Step(). With this change we flush those
on-hold-objects back to the shared queue upon performing an incremental
marking step.
Bug: chromium:694255
Change-Id: I25647d0fc581a5c4de0346bc394dc51062f65f70
Reviewed-on: https://chromium-review.googlesource.com/707315
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48424}
Each concurrent marking task maintains task_state[i]->marked_bytes.
When a task finishes, its local counter is flushed into global
total_marked_bytes_ atomic counter.
Bug: chromium:694255
Change-Id: I629467385e80bf229e06a4231673ceb5ef8e4aea
Reviewed-on: https://chromium-review.googlesource.com/704823
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48374}
This makes the test robust for stress GC flags.
Bug:
Change-Id: Ica65987f0ee09fbdb4aab233dea4c51db5b19459
Reviewed-on: https://chromium-review.googlesource.com/702436
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48313}
This is a reland of ec952aaa68.
Included is a fix that ensures that top_on_previous_step_ is cleared when we
release a page.
Original change's description:
> Reland "[profiler] proper observation of old space inline allocations"
>
> This is a reland of 672a41c3ca
> Original change's description:
> > [profiler] proper observation of old space inline allocations
> >
> > Bug: chromium:633920
> > Change-Id: I9a2f4a89f6b9c0f63cb3b166b06a88a12f0a203c
> > Reviewed-on: https://chromium-review.googlesource.com/631696
> > Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#48043}
>
> Bug: chromium:633920
> Change-Id: I6fe743d31b8ff26f3858488d4c014c62d3c85add
> Reviewed-on: https://chromium-review.googlesource.com/671127
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
> Cr-Commit-Position: refs/heads/master@{#48085}
Bug: chromium:633920
Change-Id: I8a0dcc4eaffc1f1d3ac5b3f8d344001cdae36606
Reviewed-on: https://chromium-review.googlesource.com/677407
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
Cr-Commit-Position: refs/heads/master@{#48141}
Use the (D)CHECK_{EQ,NE,GT,...} macros instead of (D)CHECK with an
embedded comparison. This gives better error messages and also does the
right comparison for signed/unsigned mismatches.
This will allow us to reenable the readability/check cpplint check.
R=ulan@chromium.org
Bug: v8:6837
Change-Id: I8d900f3c703dea6ee3bcc225a1d2754e91666b9d
Reviewed-on: https://chromium-review.googlesource.com/671047
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48136}
By adding a per test source file namespace, we can avoid a lot of
symbol collisions in jumbo builds.
While we're at it, let's remove some "using" statements that also
cause trouble.
Bug: chromium:746958
Change-Id: I6f8a723e1ba5905888638e0687b23193f3f012ca
Reviewed-on: https://chromium-review.googlesource.com/676803
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@opera.com>
Cr-Commit-Position: refs/heads/master@{#48102}
Removes
- SequentialMarkingDeque
- The ability to handle marking deque overflow
- BlackToGrey transitions
We switched to a different marking work list on M61 that fails
in OOM upon failing to allocate Segments used in the work list.
Bug: chromium:758570
Change-Id: I66e2ab912271bf84b085dccc9b4bdd96076b64fb
Reviewed-on: https://chromium-review.googlesource.com/632676
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48078}
Empty slot set buckets can leak in the following scenarios.
Scenario 1 (large object space):
1) A large array is allocated in the large object space.
2) The array is filled with old->new references, which allocates new
slot set buckets.
3) The references are overwritten with smis or old space pointers, which
make the slots set buckets empty.
4) Garbage collection (scavenge or mark-compact) iterates the slots set
of the array and pre-frees the empty buckets.
5) Steps 2-4 repeated many times and leak arbitary many empty buckets.
The fix to free empty buckets for large object space in mark-compact.
Scenario 2 (no mark-compact):
1) A small array is allocated in the old space.
2) The array is filled with old->new references, which allocates new
slot set buckets.
3) The references are overwritten with smis or old space pointers, which
make the slots set buckets empty.
4) Scavenge iterates the slots set of the array and pre-frees the empty
buckets.
5) Steps 2-4 repeated many times and leak arbitary many empty buckets.
The fix to free empty buckets for swept pages in scavenger.
Bug: v8:6800
TBR: mlippautz@chromium.org
Change-Id: I48d94870f5acf4f6208858271886911c895a9126
Reviewed-on: https://chromium-review.googlesource.com/668442
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48041}
This patch ensures that an object returned by AllocateRaw is marked
black if black allocation starts during the object allocation.
This fixes the following issue:
1) Generated code requests allocation of size N for folded allocation.
2) Runtime gets a free list node at address A of size N+M and sets up
a linear allocation area with top = A+N and limit = A+N+M.
3) Runtime invokes the allocation observer that starts incremental marking
and start black allocation. The area [A+N, A+N+M) is marked black.
4) Runtime returns a white object at address A as the allocation result.
5) Generated code moves the top pointer to A and does bump pointer
allocations of white objects from A to A+N+M.
6) Object allocated new A+N can have the impossible marbit pattern.
Bug: chromium:694255
Change-Id: I09ceebc97a510fa5fe4ff20706bc46a99f8b7cf4
Reviewed-on: https://chromium-review.googlesource.com/638338
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48005}
This CL removes the weak-list of JS functions from the context
and all the code that iterares over it. This list was being used
mainly during deoptimization (for code unlinking) and during
garbage collection. Removing it will improve performance of
programs that create many closures and trigger many scavenge GC
cycles.
No extra work is required during garbage collection. However,
given that we no longer unlink code from JS functions during
deoptimization, we leave it as it is, and on its next activation
we check whether the mark_for_deoptimization bit of that code is
set, and if it is, than we unlink it and jump to lazy compiled
code. This check happens in the prologue of every code object.
We needed to change/remove the cctests that used to check
something on this list.
Working in x64, ia32, arm64, arm, mips64 and mips.
Bug: v8:6637
Change-Id: Ica99a12fd0351ae985e9a287918bf28caf6d2e24
TBR: mstarzinger@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/647596
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47808}
This reverts commit 84c2dfce43.
Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/14876
Original change's description:
> Remove weak-list of optimized JS functions.
>
> This CL removes the weak-list of JS functions from the context
> and all the code that iterares over it. This list was being used
> mainly during deoptimization (for code unlinking) and during
> garbage collection. Removing it will improve performance of
> programs that create many closures and trigger many scavenge GC
> cycles.
>
> No extra work is required during garbage collection. However,
> given that we no longer unlink code from JS functions during
> deoptimization, we leave it as it is, and on its next activation
> we check whether the mark_for_deoptimization bit of that code is
> set, and if it is, than we unlink it and jump to lazy compiled
> code. This check happens in the prologue of every code object.
>
> We needed to change/remove the cctests that used to check
> something on this list.
>
> Working in x64, ia32, arm64, arm, mips64 and mips.
>
> Bug: v8:6637
> Change-Id: I7f192652c8034b16a9ea71303fa8e78cda3c48f3
> Reviewed-on: https://chromium-review.googlesource.com/600427
> Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47790}
TBR=mstarzinger@chromium.org,jarin@chromium.org,leszeks@chromium.org,bmeurer@chromium.org,jupvfranco@google.com
Change-Id: Ia4f1a8acf6ca5cd5c74266437a03d854b3739af2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6637
Reviewed-on: https://chromium-review.googlesource.com/647540
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47792}
This CL removes the weak-list of JS functions from the context
and all the code that iterares over it. This list was being used
mainly during deoptimization (for code unlinking) and during
garbage collection. Removing it will improve performance of
programs that create many closures and trigger many scavenge GC
cycles.
No extra work is required during garbage collection. However,
given that we no longer unlink code from JS functions during
deoptimization, we leave it as it is, and on its next activation
we check whether the mark_for_deoptimization bit of that code is
set, and if it is, than we unlink it and jump to lazy compiled
code. This check happens in the prologue of every code object.
We needed to change/remove the cctests that used to check
something on this list.
Working in x64, ia32, arm64, arm, mips64 and mips.
Bug: v8:6637
Change-Id: I7f192652c8034b16a9ea71303fa8e78cda3c48f3
Reviewed-on: https://chromium-review.googlesource.com/600427
Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47790}
Introduce a proper empty_descriptor_array, which has the proper layout
(length is 2 and the two fields are set properly). Also add a special
EnumCache class and a matching empty_enum_cache. The contract now is
that we only need to check the EnumLength on the map to know whether we
are allowed to use the enum cache. This greatly simplifies the handling
of the enum cache (and also the descriptor arrays), especially for the
future work on optimizing keyed access via the enum cache indices.
Bug: v8:6702
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I5ef517a3041163cd65ef003f691139ea52233e83
Reviewed-on: https://chromium-review.googlesource.com/641030
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47697}
DEBUG builds pull in all sorts of instrumentation infrastructure that
leads to larger heaps. The check for intial size is only useful for
release builds.
Bug: v8:6746
Change-Id: I5ab220d21167e69d7fb32c9db68045368c4ef178
R: ulan@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/631876
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47565}
Code aging is no longer supported by any remaining compilers now
that full codegen has been removed. This CL removes all vestiges of
code aging.
BUG=v8:6409
Change-Id: I945ebcc20c7c55120550c8ee36188bfa042ea65e
Reviewed-on: https://chromium-review.googlesource.com/619153
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47501}
This reverts commit a241576fa1.
Bytecode array visitor has a side-effect of incrementing the age counter.
This patch makes the increment atomic and thus safe for the concurrent
marker.
Bug: chromium:694255
Change-Id: Ibe1d75714a5911385b06e52ed50b5f152ec6b73d
Reviewed-on: https://chromium-review.googlesource.com/622432
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47472}
The quite common empty object literal doesn't need an AllocationSite
since it starts off with the general ElementsKind. By using a separate
bytecode we can directly instantiate the empty object without jumping
to the runtime first.
Note: this experimentally disables pretenuring for empty object
literals. Depending on the outcome of our benchmarks pretenuring
will be enabled again or fully removed for empty object literals.
Bug: v8:6211
Change-Id: I2fee81cbefc70865fc436dbd3bc5fc8de04db91c
Reviewed-on: https://chromium-review.googlesource.com/577555
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47467}
The effect of array/string trimming on space size is postponed until sweeping
completes. This simplifies runtime code and fixes live byte update race with
the concurrent marker.
This patch restores monotonicity of PromotedSinceLastGC by notify the heap
when sweeper discovers more free space than estimated.
Bug: chromium:694255
Change-Id: I7a8c24f2c3398bc0c8a43ffd1d35ace68010cd65
Reviewed-on: https://chromium-review.googlesource.com/621326
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47464}
This patch changes how space size and capacity are updated in GC:
- space capacity changes only when a page added/removed from the space.
- space size is reset to zero before sweeping and incremented by
page->live_bytes_count_ for each to-be-swept page.
- space size is refined after sweeping using the accurate
page->allocated_bytes counter produces by the sweeper.
Invariants:
1. space.capacity = sum [page.size | for page in space].
2. After marking, before sweeping:
a) space.size = sum [page.live_bytes_count | for page in space].
3. After sweeping, before marking ends:
a) space.size = sum [page.allocated_bytes | for page in space].
b) page.allocated_bytes >= (sum [object.size | for object in page] +
page.linear_allocation_area).
c) page.area_size = (page.allocated_bytes + page.wasted_memory +
sum [free_list_entry.size | for free_list_entry in page].
3.b becomes equality if the mutator is not doing array trimming,
object slack tracking during sweeping.
Bug: chromium:694255
Change-Id: Ic8d16a8171187a113fee2df8bf3c2a4c5e77bc08
Reviewed-on: https://chromium-review.googlesource.com/618889
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47409}
This is a reland of 21da12a983
Original change's description:
> [Compiler] Remove CompileDebugCode and EnsureBytecode and replace with Compile
>
> Removes the Compiler::CompileDebugCode and Compiler::EnsureBytecode functions
> and replaces them with a Compiler::Compile(Handle<SharedFunctionInfo> shared)
> function. The code in compiler.cc is refactored to use this function to compile
> the SharedFunctionInfo when compiling a JSFunction.
>
> Also does some other cleanup:
> - Removes CompileUnoptimizedFunction and inlines into new Compiler function
> - Moves code to create top level SharedFunctionInfo into CompilerTopLevel and
> out of FinalizeUnoptimizedCompile.
>
> BUG=v8:6409
>
> Change-Id: Ic54afcd8eb005c17f3ae6b2355060846e3091ca3
> Reviewed-on: https://chromium-review.googlesource.com/613760
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47394}
TBR=yangguo@chromium.orgTBR=jarin@chromium.org
Bug: v8:6409
Change-Id: If2eae66a85f129e746a5ca5c04935540f3f86b04
Reviewed-on: https://chromium-review.googlesource.com/618886
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47399}
This reverts commit 21da12a983.
Reason for revert: Failing on arm64 simulator
Original change's description:
> [Compiler] Remove CompileDebugCode and EnsureBytecode and replace with Compile
>
> Removes the Compiler::CompileDebugCode and Compiler::EnsureBytecode functions
> and replaces them with a Compiler::Compile(Handle<SharedFunctionInfo> shared)
> function. The code in compiler.cc is refactored to use this function to compile
> the SharedFunctionInfo when compiling a JSFunction.
>
> Also does some other cleanup:
> - Removes CompileUnoptimizedFunction and inlines into new Compiler function
> - Moves code to create top level SharedFunctionInfo into CompilerTopLevel and
> out of FinalizeUnoptimizedCompile.
>
> BUG=v8:6409
>
> Change-Id: Ic54afcd8eb005c17f3ae6b2355060846e3091ca3
> Reviewed-on: https://chromium-review.googlesource.com/613760
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47394}
TBR=rmcilroy@chromium.org,yangguo@chromium.org,jarin@chromium.org,leszeks@chromium.org
Change-Id: I4ba63e82417a185f1528ff2633eb6c8872fbbfe5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6409
Reviewed-on: https://chromium-review.googlesource.com/618687
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47397}
Removes the Compiler::CompileDebugCode and Compiler::EnsureBytecode functions
and replaces them with a Compiler::Compile(Handle<SharedFunctionInfo> shared)
function. The code in compiler.cc is refactored to use this function to compile
the SharedFunctionInfo when compiling a JSFunction.
Also does some other cleanup:
- Removes CompileUnoptimizedFunction and inlines into new Compiler function
- Moves code to create top level SharedFunctionInfo into CompilerTopLevel and
out of FinalizeUnoptimizedCompile.
BUG=v8:6409
Change-Id: Ic54afcd8eb005c17f3ae6b2355060846e3091ca3
Reviewed-on: https://chromium-review.googlesource.com/613760
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47394}
* Avoid "using namespace" statements, which trigger clang's -Wheader-hygiene
warnings in jumbo builds.
* Undefine created macros at the end of source files.
BUG=chromium:746958
Change-Id: I5d25432c314437f607b0e1be22765a6764267ba6
Reviewed-on: https://chromium-review.googlesource.com/610962
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@opera.com>
Cr-Commit-Position: refs/heads/master@{#47347}
This follows up 4af9cfcc by separating incremental marking state
from the full MC marking state. Runtime and tests now use only
the incremental marking state. The full MC marking state used
by MC during atomic pause.
This separation decouples atomicity of markbit accesses
during incremental marking and during full MC.
Bug: chromium:694255
TBR: mlippautz@chromium.org
Change-Id: Ia409ab06515cd0d1403a272a016633295c0d6692
Reviewed-on: https://chromium-review.googlesource.com/612350
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47336}
Bytecode array visitor has a side-effect of incrementing the age counter.
This patch makes the increment atomic and thus safe for the concurrent
marker.
Bug: chromium:694255
Change-Id: I36c65b02ace8d366206bd8295e72aaa19742ed56
Reviewed-on: https://chromium-review.googlesource.com/610001
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47317}
Deletes the now unused Full-codegen compiler. Also removes some macro
assembler instructions which are no longer used.
Note: there is still additional cleanup work to do after this lands
(e.g., remove support for FCG frames support and FCG
debugger support, etc.), but this will be done in followup CLs to keep
this patch managable.
BUG=v8:6409
Change-Id: I8d828fe7a64d29f2c1252d5fda968a630a2e9ef2
Reviewed-on: https://chromium-review.googlesource.com/584773
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47307}
This patch merges ObjectMarking and MarkingState. The new marking state
encapsulates object marking, live byte tracking, and access atomicity.
The old ObjectMarking calls are now replaced with calls to marking
state. For example:
ObjectMarking::WhiteToGrey<kAtomicity>(obj, marking_state(obj)
becomes
marking_state()->WhiteToGrey(obj)
This simplifies custom handling of live bytes and allows to chose
atomicity of markbit accesses depending on collector's state.
This also decouples marking bitmap from the marking code, which will
allows in future to use different data-structure for mark-bits.
Bug: chromium:694255
Change-Id: Ifb4bc0144187bac1c08f6bc74a9d5c618fe77740
Reviewed-on: https://chromium-review.googlesource.com/602132
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47288}
This is in preparation to the removal of the FullCodeGenerator, we no
longer need the ability to stress the underlying implementation.
R=rmcilroy@chromium.org
BUG=v8:6409
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Iad3177d6de4a68b57c12a770b6e85ed7a9710254
Reviewed-on: https://chromium-review.googlesource.com/584747
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47276}
This test started failing on arm64-debug-nosnap builds since we'd have
leftover NEVER_EVACUATE code-space pages from Isolate initialization.
Ensure that we exhaust all such pages and overflow into LO_SPACE before
continuing into the real test, and simply generate dummy code instead of
copying a fake CEntryStub.
Bug: v8:6690
Change-Id: I3889b5818e2467dcdce3485f1372f3b7383478f4
Reviewed-on: https://chromium-review.googlesource.com/608139
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47273}
On advancing the iterator we need to reset the current object,
so that it can be lazily reloaded later on.
TBR=mlippautz@chromium.org
Bug: chromium:694255
Change-Id: If7ddd8670df9d11837f491503312919b55b451fe
Reviewed-on: https://chromium-review.googlesource.com/600687
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47142}
This mitigates the problem of blocking on the main thread when the
platform is unable to execute background tasks in a timely manner.
Bug: v8:6671
Change-Id: I741d4b7594e8d62721dad32cbfb19551ffacd0c3
Reviewed-on: https://chromium-review.googlesource.com/599528
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47126}
This reverts commit d4a742fdf1.
Reason for revert: gc-stress failures
Original change's description:
> Reland "[heap] Add mechanism for tracking invalidated slots per memory chunk."
>
> This reverts commit c59b81d7b8.
>
> Original change's description:
> > [heap] Add mechanism for tracking invalidated slots per memory chunk.
>
> > For correct slots recording in concurrent marker, we need to resolve
> > the race that happens when
> > 1) the mutator is invalidating slots for double unboxing or string
> > conversions
> > 2) and the concurrent marker is recording these slots.
>
> > This patch adds a data-structure for tracking the invalidated objects.
> > Thus we can allow the concurrent marker to record slots without
> > worrying about clearing them. During old-to-old pointer updating phase
> > we re-check all slots that belong to the invalidated objects.
>
> BUG=chromium:694255
>
> Change-Id: Idf8927d162377a7bbdff34f81a87e52db27d6a9f
> Reviewed-on: https://chromium-review.googlesource.com/596868
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47068}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: I81c6059a092cc5834acd799c51fd30dc0ecf5b27
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:694255
Reviewed-on: https://chromium-review.googlesource.com/597787
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47078}
These tests perform GC manually which does not work well with concurrent
marking and stress incremental marking flags.
BUG=chromium:694255
Change-Id: I43e32957bf37053e0d3af07afa00b8bb40935ebd
Reviewed-on: https://chromium-review.googlesource.com/596887
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47070}
This reverts commit c59b81d7b8.
Original change's description:
> [heap] Add mechanism for tracking invalidated slots per memory chunk.
> For correct slots recording in concurrent marker, we need to resolve
> the race that happens when
> 1) the mutator is invalidating slots for double unboxing or string
> conversions
> 2) and the concurrent marker is recording these slots.
> This patch adds a data-structure for tracking the invalidated objects.
> Thus we can allow the concurrent marker to record slots without
> worrying about clearing them. During old-to-old pointer updating phase
> we re-check all slots that belong to the invalidated objects.
BUG=chromium:694255
Change-Id: Idf8927d162377a7bbdff34f81a87e52db27d6a9f
Reviewed-on: https://chromium-review.googlesource.com/596868
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47068}
This reverts commit 7a5a777c97.
Reason for revert: crashing in test-api
Original change's description:
> [heap] Add mechanism for tracking invalidated slots per memory chunk.
>
> For correct slots recording in concurrent marker, we need to resolve
> the race that happens when
> 1) the mutator is invalidating slots for double unboxing or string
> conversions
> 2) and the concurrent marker is recording these slots.
>
> This patch adds a data-structure for tracking the invalidated objects.
> Thus we can allow the concurrent marker to record slots without
> worrying about clearing them. During old-to-old pointer updating phase
> we re-check all slots that belong to the invalidated objects.
>
> BUG=chromium:694255
>
> Change-Id: Ifc3d82918cd3b96e5a5fb7125691626a56f4ab83
> Reviewed-on: https://chromium-review.googlesource.com/591810
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47049}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: I7f4f8e8cb027b921a82e9c0a0623536af02581fb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:694255
Reviewed-on: https://chromium-review.googlesource.com/595994
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47052}
Adds a base class TestPlatform which implements the most common defaults
for v8::Platform methods.
Reworks existing cctests and unittests to use TestPlatform.
Bug:
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ifeb28a5a190529697d5bcac227e80b10d454d9bd
Reviewed-on: https://chromium-review.googlesource.com/590194
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47050}
For correct slots recording in concurrent marker, we need to resolve
the race that happens when
1) the mutator is invalidating slots for double unboxing or string
conversions
2) and the concurrent marker is recording these slots.
This patch adds a data-structure for tracking the invalidated objects.
Thus we can allow the concurrent marker to record slots without
worrying about clearing them. During old-to-old pointer updating phase
we re-check all slots that belong to the invalidated objects.
BUG=chromium:694255
Change-Id: Ifc3d82918cd3b96e5a5fb7125691626a56f4ab83
Reviewed-on: https://chromium-review.googlesource.com/591810
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47049}
Remove the concept of IC age from the heap and SFI, since it no
longer does anything useful.
Change-Id: I4ce466efc77c007c09c0889bae09ec6a0c907e33
Reviewed-on: https://chromium-review.googlesource.com/593623
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47041}
Since any deopt-count-based heuristics should be native context
dependent, it belongs in the feedback vector rather than the SFI.
Bug: v8:6402
Change-Id: I30804d58bc1dec9150558e6ee21ee5b4dbd36c8d
Reviewed-on: https://chromium-review.googlesource.com/593661
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47014}
Instead of auto-generating the Name() convenience accessor, use a macro to
avoid wasting code space.
BUILTIN_CODE(isolate, Name)
expands to
isolate->builtins()->builtin_handle(Builtins::kName);
This reduces the size of libv8.so by 134,752 bytes on a x64 release build.
Bug: v8:6624
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Idff7ee5c45e344e73412c0f47e92553c7c7ff75f
Reviewed-on: https://chromium-review.googlesource.com/593607
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47010}
Remove opt_count from SFI, which only had two real uses:
1. Detecting OSR in tests -- replaced with a stack walk in
%GetOptimizationStatus
2. Naming optimization log files -- replaced with the
optimization id
This allows us to remove a field from the SFI, moving the
bailout reason into the counters field.
As a drive-by, add optimization marker information (e.g.
marked for optimization) to the optimization status.
Change-Id: Id77deb5dd5439dfba058a7e1e1748de26b717d0d
Reviewed-on: https://chromium-review.googlesource.com/592028
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47009}
in preparation for caching StoreIC-Transition handlers in there.
This CL should not change behavior or performance.
The TransitionArray class no longer serves a dual purpose; it is now
simply the data structure serving that role. Further, it now supports
storing transitioning handlers in its "target" slot, which in turn have
a WeakCell pointing to the transition target (but this functionality
is not being used yet).
The interface for accessing a map's transitions, previously implemented
as a set of static functions, is now handled by the TransitionsAccessor
class. It distinguishes the following internal states:
- kPrototypeInfo: map is a prototype map, will never cache any transitions.
- kUninitialized: map can cache transitions, but doesn't have any.
- kWeakCell: map caches a single transition, stored inline. Formerly known
as "IsSimpleTransition".
- kFullTransitionArray: map uses a TransitionArray to store transitions.
- kTuple3Handler, kFixedArrayHandler: to be used in the future for caching
transitioning handlers.
Change-Id: If2aa68390981f96f317b958445a6e0b935c2a14e
Reviewed-on: https://chromium-review.googlesource.com/550118
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46981}
Empty Array literals are amongst the most commonly used literal types on our
top25 page list. Using a custom bytecode we can drop the boilerplate for empty
Array literals alltogether. However, we still need a proper AllocationSite to
track ElementsKind transitions.
Bug: v8:6211, chromium:746935
Change-Id: I891eaa778e4e81e138e483a65f04ae00ae30bd28
Reviewed-on: https://chromium-review.googlesource.com/580932
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46875}
Reland of https://chromium-review.googlesource.com/c/544888/.
Instead of counting profiler ticks on the shared function info (which is
shared between native contexts), count them on the feedback vector
(which is not). This allows us to continue pushing optimization
decisions off the SFI, onto the feedback vector.
Note that a side-effect of this is that ICs don't have to walk the stack
to reset profiler ticks, as they can access the feedback vector directly
from their feedback nexus.
Change-Id: I7aa6baed03f726843d1b62629c72b74f05114b48
Reviewed-on: https://chromium-review.googlesource.com/579051
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46868}
This reverts commit 8580529302.
Reason for revert: increased memory usage on benchmarks.
BUG=chromium:747806
Original change's description:
> [heap] Remove clearing of caches and counter of shared function info in
> marking visitors.
>
> This makes incremental and concurrent visitors of share function infos
> side-effect free.
>
> BUG=chromium:694255
>
> Change-Id: I85ee7bac17f17bdbc101ef64ecfb46020b5b3458
> Reviewed-on: https://chromium-review.googlesource.com/574851
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46796}
TBR=ulan@chromium.org,mlippautz@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: chromium:694255
Change-Id: Id28551ce8378820b0272721b7efb388727c442d4
Reviewed-on: https://chromium-review.googlesource.com/584288
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46864}
This is so that we can distinguish hash tables by instance type. We can
then introduce maps for each kind of hash tables to further distinguish.
R=mstarzinger@chromium.org
Bug: v8:6593
Change-Id: Ice9e6bb7b85d825207ac489b6930ac9020d60db8
Reviewed-on: https://chromium-review.googlesource.com/582814
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46861}
This reverts commit 990dd947bc.
Reason for revert: <INSERT REASONING HERE>
Original change's description:
> Introduce HASH_TABLE_TYPE instance type.
>
> This is so that we can distinguish hash tables by instance type. We can
> then introduce maps for each kind of hash tables to further distinguish.
>
> R=mstarzinger@chromium.org
>
> Bug: v8:6593
> Change-Id: I1a532884758e571abdfe2e2743fc5ea611d12f7e
> Reviewed-on: https://chromium-review.googlesource.com/581009
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46828}
TBR=yangguo@chromium.org,mstarzinger@chromium.org
Change-Id: Ia47d408e5cf47983940227b4cc445a704d7f8d19
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6593
Reviewed-on: https://chromium-review.googlesource.com/581493
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46833}
This is so that we can distinguish hash tables by instance type. We can
then introduce maps for each kind of hash tables to further distinguish.
R=mstarzinger@chromium.org
Bug: v8:6593
Change-Id: I1a532884758e571abdfe2e2743fc5ea611d12f7e
Reviewed-on: https://chromium-review.googlesource.com/581009
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46828}
marking visitors.
This makes incremental and concurrent visitors of share function infos
side-effect free.
BUG=chromium:694255
Change-Id: I85ee7bac17f17bdbc101ef64ecfb46020b5b3458
Reviewed-on: https://chromium-review.googlesource.com/574851
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46796}
This relands parts of "[heap] Allow a minimum semi-space size of 512K."
excluding the actual semi-space size change.
This partially reverts commit f341bb0f62
> Original commit message:
> Revert "[heap] Allow a minimum semi-space size of 512K."
> This reverts commit 0d2ed6c328.
> The CL introduced perf regressions: crbug.com/735649.
> We are going to reland the CL in an isolated V8 roll to ensure
> that perf regressions are attributed correctly.
> Original commit message:
> > [heap] Allow a minimum semi-space size of 512K.
> > This CL also reduces the minimum semi-space size to 512K.
> > BUG=chromium:716032
> BUG=chromium:735649
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I5ed66b72104aa877d67fcd20bdadc807ea1551c3
Reviewed-on: https://chromium-review.googlesource.com/575065
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46762}
Add SetProperties as the generic interface to set properties. In the
future, this will switch based on the input properties type and
correctly store the hash code.
This patch also updates tests to check against empty_property_array
instead of empty_fixed_array.
Bug: v8:6404
Change-Id: I39d324ea3ab3cc2c2223b6f4be64139bb88edd94
Reviewed-on: https://chromium-review.googlesource.com/574761
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46744}
This will allow us to concurrently allocate buckets during iteration.
Bug: chromium:738865
Change-Id: I88bd1ac152d1ef8b40395f0ba3e55a7c3e82f75d
Reviewed-on: https://chromium-review.googlesource.com/575990
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46737}
If the incremental marker discovers more marking work and the concurrent
marking tasks have already exited, then new concurrent marking tasks
are scheduled to help the main thread marker.
BUG=chromium:694255
Change-Id: I559af62790e6034b23a412d3308ba8b6ae3d27c9
Reviewed-on: https://chromium-review.googlesource.com/574170
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46703}
This reverts commit a2fcdc7cc8.
Reason for revert: Large regressions in RCS (https://chromeperf.appspot.com/group_report?bug_id=740126)
Original change's description:
> [runtime] Move profiler ticks from SFI to feedback vector
>
> Instead of counting profiler ticks on the shared function info (which is
> shared between native contexts), count them on the feedback vector
> (which is not). This allows us to continue pushing optimization
> decisions off the SFI, onto the feedback vector.
>
> Note that a side-effect of this is that ICs don't have to walk the stack
> to reset profiler ticks, as they can access the feedback vector directly
> from their feedback nexus.
>
> Change-Id: I232ae9e759fca75cd89d393148a4ff42caa2646f
> Reviewed-on: https://chromium-review.googlesource.com/544888
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46411}
TBR=rmcilroy@chromium.org,leszeks@chromium.org,ishell@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: Id587e4172e300c420f93c49744a2a0e66696edf8
Reviewed-on: https://chromium-review.googlesource.com/574227
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46702}
This reverts commit 20d5048a6f.
Revert "[heap] Ensure that concurrent marking tasks exit before heap tear down."
This reverts commit 387f65d41a.
Reason: concurrent marking tasks waiting for a signal from the main thread
is susceptible to deadlocks. We should instead re-schedule concurrent marking
threads once they exit.
BUG=chromium:694255
Change-Id: I20db2f26b42e960f4cc04506d9598c1187b8a003
Reviewed-on: https://chromium-review.googlesource.com/571800
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46671}
Removes the --ignition flag which is now on by default. Adds a
--stress-fullcodegen flag which enables running all functions supported
by fullcodegen to be compiled by fullcodegen.
This will enable moving parser internalization later when we are not
stressing fullcodegen or compiling asm.js functions.
BUG=v8:5203, v8:6409, v8:6589
Change-Id: I7fa68016d4e734755434ec0b4e749ef65ffa7f4e
Reviewed-on: https://chromium-review.googlesource.com/565569
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46635}
This adds a convenience method for the common Smi to int conversion
pattern.
Bug:
Change-Id: I7d7b171c36cfec5f6d10c60f1d9c3e06e3aed0fa
Reviewed-on: https://chromium-review.googlesource.com/563205
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46516}
Replaces the old PromotionQueue that was kept at the end of to space.
This change allows a future implementation to use
(a) a thread-local promotion list and
(b) enables work stealing for concurrent scenarios.
Bug: chromium:738865
Change-Id: I4c983a36e69ad4a9462eb9a59f586a85e51acbde
Reviewed-on: https://chromium-review.googlesource.com/561141
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46446}
Remove all IsHeapObject/IsSmi checks from assembler and also from
the macro-assembler functions that Turbofan code generation uses.
Note for porters: In case it's unclear which macro-assembler
functions need to be modified, it may be best to wait until I
split MacroAssembler in a followup-CL, which will make that clear.
Bug: v8:6048
Change-Id: Ife0735cc6f48713c9ec493faf2dac5e553d1c06b
Reviewed-on: https://chromium-review.googlesource.com/561015
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46436}
Instead of counting profiler ticks on the shared function info (which is
shared between native contexts), count them on the feedback vector
(which is not). This allows us to continue pushing optimization
decisions off the SFI, onto the feedback vector.
Note that a side-effect of this is that ICs don't have to walk the stack
to reset profiler ticks, as they can access the feedback vector directly
from their feedback nexus.
Change-Id: I232ae9e759fca75cd89d393148a4ff42caa2646f
Reviewed-on: https://chromium-review.googlesource.com/544888
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46411}
