Currently the size of compaction spaces is not taken into account in
the Heap::CanExpandOldGeneration predicate. This can push the heap size
over the hard limit in some cases.
This patch makes Heap::CanExpandOldGeneration stricter and also fixes
the SelectGarbageCollector to prefer Mark-Compact near the hard limit.
Bug: chromium:784077
Change-Id: I00c7295eba8794a342dd6277a45f995529054b64
Reviewed-on: https://chromium-review.googlesource.com/779265
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49519}
This code was confusing, since "target" declared in one of the subscopes
shadowed a parameter with the same name.
Change-Id: Ibf694c94f0a26ca65609cb80d22c40a8fa98f4f3
Reviewed-on: https://chromium-review.googlesource.com/779261
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49518}
Not resetting the ticks regresses optimization time without substantial
performance benenfits on twitter, facebook, youtube, linkedin and wikipedia.
There was no net positive effect visible otherwise.
Bug: chromium:786908
Change-Id: I98237dee170e7a387f09ccfbad178793361d4a67
Reviewed-on: https://chromium-review.googlesource.com/779435
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49516}
The strex (Store Exclusive) instruction has the form:
strex rd, rt, [rn]
It stores the value in register rt at the address in register rn. If the
store succeeds, then 0 is stored in rd, otherwise 1 is stored. The ARM
manual says that behavior is "unpredictable" if d == n || d == t (i.e.
those registers are aliased).
We were not checking for this behavior in the assembler or simulator,
and as a result were generating output where it occurred. This didn't
always break; the tests we run on ARM hardware run this instruction and
pass.
BUG: chromium:786168
Change-Id: I57fe3a1db406eac96eb04ef2246f6970548d3cf9
Reviewed-on: https://chromium-review.googlesource.com/777777
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49513}
This is a reland of c71fd20cf9
Original change's description:
> [wasm] Data structures for JIT-ing wasm to native memory.
>
> This CL introduces the structures for JIT-ing wasm on the native heap.
> They are described in detail at go/wasm-on-native-heap-stage-1
>
> Briefly:
> - WasmCodeManager manages memory for modules and offers an interior
> pointer lookup (i.e. PC -> WasmCode)
> - WasmCode represents code, including reloc info. It holds wasm
> specific data, like function index, and runtime information, like trap
> handler info.
> - NativeModule manages memory for one module.
>
> Tests cover the allocation and lookup aspects, following that current
> regression tests cover the JITed code. A separate CL will enable
> JITing using the new data structures.
>
> Bug: v8:6876
> Change-Id: I1731238409001fe97c97eafb7a12fd3922da6a42
> Reviewed-on: https://chromium-review.googlesource.com/767581
> Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49501}
Bug: v8:6876
Change-Id: Ifd1a4c23de8150dbdc75f059cd657e9670b15c9b
Reviewed-on: https://chromium-review.googlesource.com/779680
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49512}
This adds a bigint branch to the typed-optimization of the TypeOf
bytecode. The implementation of the TestTypeOf bytecode already supports
bigints, as does the Typeof stub.
R=jarin@chromium.org
Bug: v8:6791
Change-Id: Ib9a21f3fc48d57873b014a01c68a143bfb8ac6c6
Reviewed-on: https://chromium-review.googlesource.com/778880
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49509}
This is a reland of 236298acbf.
Original change's description:
> [wasm] Unify deoptimization data
>
> Add methods to add deoptimization data and use them from all the places
> where we currently add them manually. Also add them to wasm-to-wasm
> wrappers compiled on table set, which was missing before, leading to
> the referenced bug.
>
> R=ahaas@chromium.org
>
> Bug: chromium:779292
> Change-Id: Ib9132d9faeb1092c46e22dd8196d201ce5c0942f
> Reviewed-on: https://chromium-review.googlesource.com/774838
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49452}
Bug: chromium:779292
Change-Id: I8219305fc894c50904db57e51245733f6613dcd3
Reviewed-on: https://chromium-review.googlesource.com/778159
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49508}
This reverts commit 712fa67554.
Reason for revert: Infra side change was reverted. Please reland
after it stays in for a bot cycle...
Original change's description:
> [test] Add Liftoff variant
>
> Add a variant for testing the current state of the Liftoff
> implementation.
> This variant will only run on a subset of the bots, just like the
> --future variant.
>
> R=machenbach@chromium.org, hablich@chromium.org
>
> Bug: v8:7088, v8:6600
> Change-Id: If49fad3a8ed579356504b821a787326754f24e78
> Reviewed-on: https://chromium-review.googlesource.com/779420
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49504}
TBR=machenbach@chromium.org,hablich@chromium.org,clemensh@chromium.org
Change-Id: Ib6b2e79cea5d9f99f8933c72bbb9d9dddbd6ae07
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7088, v8:6600
Reviewed-on: https://chromium-review.googlesource.com/779719
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49507}
Free ArrayBuffer backing stores on a background thread, rather than
blocking the main thread after processing. Could potentially cause
contention with the array buffer allocator once JS execution resumes.
The new ArrayBufferCollector class tracks these dead allocations.
Later, the processing of array buffers can happen in parallel.
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux64_tsan_rel;master.tryserver.v8:v8_linux64_tsan_concurrent_marking_rel_ng;master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
Bug: v8:6992
Change-Id: I2b74f008f79521414374f607ed510f66508af160
Reviewed-on: https://chromium-review.googlesource.com/779182
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49505}
Add a variant for testing the current state of the Liftoff
implementation.
This variant will only run on a subset of the bots, just like the
--future variant.
R=machenbach@chromium.org, hablich@chromium.org
Bug: v8:7088, v8:6600
Change-Id: If49fad3a8ed579356504b821a787326754f24e78
Reviewed-on: https://chromium-review.googlesource.com/779420
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49504}
This reverts commit c71fd20cf9.
Reason for revert: msvc is unhappy (https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20msvc/builds/208)
Original change's description:
> [wasm] Data structures for JIT-ing wasm to native memory.
>
> This CL introduces the structures for JIT-ing wasm on the native heap.
> They are described in detail at go/wasm-on-native-heap-stage-1
>
> Briefly:
> - WasmCodeManager manages memory for modules and offers an interior
> pointer lookup (i.e. PC -> WasmCode)
> - WasmCode represents code, including reloc info. It holds wasm
> specific data, like function index, and runtime information, like trap
> handler info.
> - NativeModule manages memory for one module.
>
> Tests cover the allocation and lookup aspects, following that current
> regression tests cover the JITed code. A separate CL will enable JITing
> using the new data structures.
>
> Bug: v8:6876
> Change-Id: I1731238409001fe97c97eafb7a12fd3922da6a42
> Reviewed-on: https://chromium-review.googlesource.com/767581
> Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49501}
TBR=bradnelson@chromium.org,ulan@chromium.org,mstarzinger@chromium.org,titzer@chromium.org,mtrofin@chromium.org,mlippautz@chromium.org
Change-Id: Id54deb74782c6f0fd06c61ddcabb727eb7010333
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6876
Reviewed-on: https://chromium-review.googlesource.com/779679
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49503}
This CL introduces the structures for JIT-ing wasm on the native heap.
They are described in detail at go/wasm-on-native-heap-stage-1
Briefly:
- WasmCodeManager manages memory for modules and offers an interior
pointer lookup (i.e. PC -> WasmCode)
- WasmCode represents code, including reloc info. It holds wasm
specific data, like function index, and runtime information, like trap
handler info.
- NativeModule manages memory for one module.
Tests cover the allocation and lookup aspects, following that current
regression tests cover the JITed code. A separate CL will enable JITing
using the new data structures.
Bug: v8:6876
Change-Id: I1731238409001fe97c97eafb7a12fd3922da6a42
Reviewed-on: https://chromium-review.googlesource.com/767581
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49501}
I just pass a pointer of the platform to the task runner so that the
task runners can put tasks directly into the platform data structures.
R=rmcilroy@chromium.org
Change-Id: I7c1c56c3b9f550c0fe80012abcd31011e69f3d5d
Reviewed-on: https://chromium-review.googlesource.com/771751
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49498}
Test suite contract changes:
- support * only at the end of the rule.
- loading status file is mandatory before filtering by status file.
Bug: v8:6917
Change-Id: Ia345ebfa7827c50f13f20e5cb7489e62c53f3357
Reviewed-on: https://chromium-review.googlesource.com/779185
Commit-Queue: Michał Majewski <majeski@google.com>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49496}
Streaming compilation started the compilation of a module at the
beginning of the code section. However, there exist valid modules which
do not contain a code section. In this CL we check for the existence of
a code section when we finish the stream. We do this by checking if the
module compiler in the AsyncCompileJob exists, because the module
compiler gets initialized at the beginning of the code section.
If we detect that compilation has not been started because there was no
code section, then we start compilation when the stream finishes.
R=clemensh@chromium.org
Bug: chromium:771973
Change-Id: I7c95a7a791d02254f086961e7cd81885eec27382
Reviewed-on: https://chromium-review.googlesource.com/778541
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49494}
We should only ever call value() on a variable while we are inside a block.
This CL adds a DEBUG check to this effect.
Bug:
Change-Id: Ic85fae70e2c3543ff79e3234ba26e1daa234f7e3
Reviewed-on: https://chromium-review.googlesource.com/772233
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49492}
This reverts commit b6658adee0.
Reason for revert: TSAN detects data race when running mksnapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/18354
Original change's description:
> [heap] Concurrently free ArrayBuffer allocations.
>
> Free ArrayBuffer backing stores on a background thread, rather than
> blocking the main thread after processing. Could potentially cause
> contention with the array buffer allocator once JS execution resumes.
>
> The new ArrayBufferCollector class tracks these dead allocations.
>
> Later, the processing of array buffers can happen in parallel.
>
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
>
> Bug: v8:6992
> Change-Id: I49ae4db12ed62d8400ba2bbafeda05a11479d904
> Reviewed-on: https://chromium-review.googlesource.com/739829
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49485}
TBR=hpayer@chromium.org,mlippautz@chromium.org,petermarshall@chromium.org
Change-Id: I293440b5f2602ca1c8ad120003f551bc8db6b75f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6992
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/779199
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49489}
This reverts commit b6658adee0.
Reason for revert: Breaks TSAN :(
Original change's description:
> [heap] Concurrently free ArrayBuffer allocations.
>
> Free ArrayBuffer backing stores on a background thread, rather than
> blocking the main thread after processing. Could potentially cause
> contention with the array buffer allocator once JS execution resumes.
>
> The new ArrayBufferCollector class tracks these dead allocations.
>
> Later, the processing of array buffers can happen in parallel.
>
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
>
> Bug: v8:6992
> Change-Id: I49ae4db12ed62d8400ba2bbafeda05a11479d904
> Reviewed-on: https://chromium-review.googlesource.com/739829
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49485}
TBR=hpayer@chromium.org,mlippautz@chromium.org,petermarshall@chromium.org
Change-Id: If6743b83f871c0fd0d6e83a3083dce0eecd99021
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6992
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/779159
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49488}
This updates the V8 side MB fork with all upstream changes until:
https://chromium.googlesource.com/chromium/src/+/f4d92a15f/tools/mb/mb.py
This includes a required feature for mapping isolate targets to
runtime deps.
Bug: chromium:669910
Change-Id: I22244455b22737cfbfc45adef93581ef44cf4151
Reviewed-on: https://chromium-review.googlesource.com/778879
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49487}
Avoid the stupid newline when the name is a String, which is
automatically appended by the Object::Print() method. Just use
the Name::NamePrint() method instead.
Bug: v8:5267
Change-Id: I12ec878325b6f6ecdd8633a5ac8129b2398ddf9a
Reviewed-on: https://chromium-review.googlesource.com/778823
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49486}
Free ArrayBuffer backing stores on a background thread, rather than
blocking the main thread after processing. Could potentially cause
contention with the array buffer allocator once JS execution resumes.
The new ArrayBufferCollector class tracks these dead allocations.
Later, the processing of array buffers can happen in parallel.
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Bug: v8:6992
Change-Id: I49ae4db12ed62d8400ba2bbafeda05a11479d904
Reviewed-on: https://chromium-review.googlesource.com/739829
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49485}
When collecting source ranges for conditionals (`a ? b : c`), include
the '?' and ':' tokens in the then- and else ranges, respectively.
Bug: v8:7098
Change-Id: I22315e2040c96c977e0b49e1fafe4228a6558471
Reviewed-on: https://chromium-review.googlesource.com/778321
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49484}
This moves the logging of the RCS event for background parsing tasks out
of the parser and performs it at the end of the background parsing task.
This is necessary in order to log background compile RCS events which happen
after parsing.
BUG=v8:5203
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ie216eeade0279d8243818a8eb59309969775823c
Reviewed-on: https://chromium-review.googlesource.com/776669
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49483}
For the fast case we can avoid the instance type check, since the map
check covers that. We also don't need to call out to the ToBoolean
builtin in general, but just use the BranchIfToBooleanIsTrue logic.
Plus in the fast case, we don't know that the JSIteratorResult::done is
a boolean, since the map doesn't guard this assumption, so we also need
to do a proper BranchIfToBooleanIsTrue in that case.
Bug: v8:5269
Change-Id: I36f0d0841472c02f8030f9ce067d20326c9388bd
Reviewed-on: https://chromium-review.googlesource.com/778882
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49482}
We can just use the same trick here that we use with TurboFan and load
the (signaling) NaN value out of the canonical tagged root. This
improves the loop for initializing double backing stores by hoisting the
load of the constant value out of the loop.
Bug: v8:5267
Change-Id: Idcf07c0e910ecc085a8b89225613f0a8fb50a414
Reviewed-on: https://chromium-review.googlesource.com/778979
Reviewed-by: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49480}
When using ninja to build without specifying explicit targets,
all existing targets in any BUILD.gn file are built/executed.
We now hide the snapshot targets behind the snapshot condition
to prevent them from being built and executed in nosnap builds.
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_nosnap_rel
Bug: v8:7089
Change-Id: I4cd8ebadc377fd20b3887e9628990a75732ab74c
Reviewed-on: https://chromium-review.googlesource.com/778320
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49477}
Now that Crankshaft is gone we no longer need to worry about parameter
mismatch for safepoints and we can just tail-call to %GrowArrayElements
from the GrowArrayElementsStub.
Bug: chromium:608675, v8:5269, v8:6408
Change-Id: I1b11d7d00cad02749a0ebc0a7de5e608de6d91c9
Reviewed-on: https://chromium-review.googlesource.com/778861
Reviewed-by: Daniel Clifford <danno@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49474}
For simple replacement strings without $ characters, we can do the
replacement in CSA for a global regexp. This is a common case because
this is currently the most widely used way to 'replaceAll' in a string.
This CL speeds up the test case in the linked bug by 13%.
Bug: v8:7053
Change-Id: I0d1d7c25fed07dfd7927191a3ef3138302e10c8f
Reviewed-on: https://chromium-review.googlesource.com/774440
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49472}
The "array protector" now guards the Object.prototype, the
Array.prototype and the String.prototype, so the name was a
bit misleading nowadays. So the new name "no elements protector"
was chosen.
Bug: v8:6936, v8:7014, v8:7027
Change-Id: I9a9d7caa2caf0ac9e78cc6658de2f0506970dfa2
Reviewed-on: https://chromium-review.googlesource.com/778162
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49471}
The ToBooleanHints were used to represent the ToBoolean feedback
collected by Fullcodegen. But Ignition doesn't collect this feedback
and also TurboFan doesn't make use of the hints, so we should remove
this for now.
Bug: v8:7101
Change-Id: Ifc97d3ebb7494029b33ad79fc8bafdf3c08fb871
Reviewed-on: https://chromium-review.googlesource.com/778163
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49470}
