This CL consolidates ownership of parameters used to compile code (which
we always specialize) in 2 places:
- ModuleEnv for compile-time data
- WasmCompiledModule for runtime data
The parameters in question are: memory size and start; globals start;
address of indirect function tables (and their signatures, respectively);
and address to be used for wasm call sites.
Ideally, we'd collapse this down to one place, however, we need
specialization data to survive serialization. We can achieve this we get off
the GC heap and use a different wasm code serializer.
The CL:
- removes aliasing of parts of the specialization data, and moves
to using ModuleEnv as a token of passing around compile-time data, instead
of a mixture of ModuleEnv, WasmInstance, and some other structures. ModuleEnv
is responsible for providing a consistent view of the specialization data,
e.g. valid memory sizes (multiples of page size), and matching sized function
tables and signatures.
- removes WasmInstance, as its data is now contained by ModuleEnv.
- removes ModuleBytesEnv. We now pass the wire bytes explicitly. They can't
always be assumed as present (e.g. streaming compilation), and probably more
refactoring may need to happen once streaming compilation lands and we
better understand our dependencies.
Change-Id: Id7e6f2cf29e51b5756eee8b6f8827fb1f375e5c3
Reviewed-on: https://chromium-review.googlesource.com/592531
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47229}
This avoid introduction of {TypeGuard} nodes during load elimination.
Such type guard could lead to contradicting type information where a
constant {NumberConstant} node was guarded to have {ExternalPointer}
type, which would lead to an impossible constraint on representation
selection.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-752826
BUG=chromium:752826
Change-Id: Ida3815af24ccc8a48474b8d66117b9718f61adda
Reviewed-on: https://chromium-review.googlesource.com/605547
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47218}
Currently only A test operators had output, but since ABReducer and BCReducer
perform in-place replacement of A nodes into B nodes, and then sometimes into
C nodes, we need B and C nodes to have as many outputs. Otherwise, we run into
a situation where a node {x} has a use {y}, but its operators has 0 outputs,
which is inconsistent.
Bug:
Change-Id: I0f73b83d2115dfeda3c9cbc97b9a2fc168f4c31b
Reviewed-on: https://chromium-review.googlesource.com/603716
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Alexandre Talon <alexandret@google.com>
Cr-Commit-Position: refs/heads/master@{#47202}
I want to reuse the PassType helper in another CL, thus move it from
logging.h to template-utils.h, and rename it to pass_value_or_ref to
match other helpers there.
Also, add a boolean template parameter to declare whether array
dimensions should be removed. The default is to do so, which helps to
reduce the number of template instantiations by always passing arrays
as pointers.
Also, fix the usages in logging.h to actually use that helper when
instantiating other template functions. This will reduce the number of
instantiations.
And finally, we now have unit tests for the template utils, to document
what we expect, and test that this works on all architectures.
R=ishell@chromium.org, tebbi@chromium.org
Change-Id: I1ef5d2a489a5cfc7601c5ab13748674e3aa86cd6
Reviewed-on: https://chromium-review.googlesource.com/594247
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47191}
For determining whether unaligned memory accessed is allowed, it is
actually sufficient to pass the MachineRepresentation instead of the
MachineType.
As the MachineRepresentation is an enum, this allows to store the set
of unsupported types as an EnumSet instead of std::vector.
R=mstarzinger@chromium.org
Change-Id: Ibe44717bae3a6034bae683057e80bd40d92e70ae
Reviewed-on: https://chromium-review.googlesource.com/598790
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47123}
Don't hold a pointer to parse_info in compilation_info, and instead explicitly
add the fields needed in compiation_info. The intention is to make ParseInfo
only actually needed for parsing, and eventually make it possible to compile
with only a CompileInfo.
BUG=v8:5203
Change-Id: Iecd39245e44c218874401c3991eeaf3ceef2816f
Reviewed-on: https://chromium-review.googlesource.com/595738
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47119}
The {alignment} parameter in {UnalignedLoadSupported} and
{UnalignedStoreSupported} is never being used.
This CL removes it from several interfaces and users.
R=mstarzinger@chromium.org
Change-Id: Iad5a638b7ed358beeed42f0ea7308dc04f1ed23e
Reviewed-on: https://chromium-review.googlesource.com/598788
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47115}
This removes the obsolete {Crankshaft} factory method as it returns the
same configuration as the {Turbofan} factory by now. We now consistently
use {RegisterConfiguration::Default} everywhere.
R=jkummerow@chromium.org
BUG=v8:6408
Change-Id: I6be25774aa6714ef4dc1ef6856bb6dbc95593a29
Reviewed-on: https://chromium-review.googlesource.com/597858
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47109}
This is a reland of 470a10015d
Original change's description:
> Start migration of try/throw/catch to match proposal.
>
> This CL does the first baby steps on moving the current (experimental)
> exception handling to match that of the WebAssembly proposal.
>
> It does the following:
>
> 1) Use exception tags instead of integers.
>
> 2) Only handle empty exception signatures (i.e. no values associated
> with the exception tag.
>
> 3) Only handle one catch clause.
>
> 4) Be sure to rethrow the exception if the exception tag does not match.
>
> Note: There are many things that need to be fixed, and are too
> numerous to list here. However, the code should have TODO's on each
> missing parts of the implementation.
>
> Also note that the code currently doesn't handle nested catch blocks,
> nor does it change the throw value being an integer. Rather, the
> integer value is still being thrown, and currently is the exception
> tag. Therefore, we don't build an exception object. This is the reason
> why this CL doesn't handle exceptions that pass values.
>
> Also, the current implementation still can't handle multiple modules
> because tag resolution (between) modules has not be implemented yet.
>
> Bug: v8:6577
> Change-Id: Id6d08b641b3c42d1eec7d4db582f2dab35406114
> Reviewed-on: https://chromium-review.googlesource.com/591910
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47087}
Bug: v8:6577
Change-Id: I41c3309827c292cb787681a95aaef7cf9b931835
Reviewed-on: https://chromium-review.googlesource.com/598968
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47100}
This reverts commit 470a10015d.
Reason for revert: GC stress bot failures.
https://uberchromegw.corp.google.com/i/client.v8/builders/V8%20Mac%20GC%20Stress/builds/14522
Original change's description:
> Start migration of try/throw/catch to match proposal.
>
> This CL does the first baby steps on moving the current (experimental)
> exception handling to match that of the WebAssembly proposal.
>
> It does the following:
>
> 1) Use exception tags instead of integers.
>
> 2) Only handle empty exception signatures (i.e. no values associated
> with the exception tag.
>
> 3) Only handle one catch clause.
>
> 4) Be sure to rethrow the exception if the exception tag does not match.
>
> Note: There are many things that need to be fixed, and are too
> numerous to list here. However, the code should have TODO's on each
> missing parts of the implementation.
>
> Also note that the code currently doesn't handle nested catch blocks,
> nor does it change the throw value being an integer. Rather, the
> integer value is still being thrown, and currently is the exception
> tag. Therefore, we don't build an exception object. This is the reason
> why this CL doesn't handle exceptions that pass values.
>
> Also, the current implementation still can't handle multiple modules
> because tag resolution (between) modules has not be implemented yet.
>
> Bug: v8:6577
> Change-Id: Id6d08b641b3c42d1eec7d4db582f2dab35406114
> Reviewed-on: https://chromium-review.googlesource.com/591910
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47087}
TBR=bradnelson@chromium.org,eholk@chromium.org,kschimpf@chromium.org
Change-Id: I01dc8c40cc1057333a988c1d275ce5f457b0cb64
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6577
Reviewed-on: https://chromium-review.googlesource.com/598847
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47090}
This CL does the first baby steps on moving the current (experimental)
exception handling to match that of the WebAssembly proposal.
It does the following:
1) Use exception tags instead of integers.
2) Only handle empty exception signatures (i.e. no values associated
with the exception tag.
3) Only handle one catch clause.
4) Be sure to rethrow the exception if the exception tag does not match.
Note: There are many things that need to be fixed, and are too
numerous to list here. However, the code should have TODO's on each
missing parts of the implementation.
Also note that the code currently doesn't handle nested catch blocks,
nor does it change the throw value being an integer. Rather, the
integer value is still being thrown, and currently is the exception
tag. Therefore, we don't build an exception object. This is the reason
why this CL doesn't handle exceptions that pass values.
Also, the current implementation still can't handle multiple modules
because tag resolution (between) modules has not be implemented yet.
Bug: v8:6577
Change-Id: Id6d08b641b3c42d1eec7d4db582f2dab35406114
Reviewed-on: https://chromium-review.googlesource.com/591910
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47087}
They were only limited to 32 bit when using the internal Hashmap. Since
this has changed alreay some time ago, we can switch to 64 bit ids and
check that we never overflow.
Bug:
Change-Id: Ia6c6d02d6b5e555c6941185a79427dc4aa2a1d62
Reviewed-on: https://chromium-review.googlesource.com/598229
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47085}
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}
This sets the minimum semi-space size to 512K, but does not
change the initial semi-space size.
This reverts commit 774a4c5e24.
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
TBR=mlippautz@chromium.org
Change-Id: I1f5dd05b0851ba2b438bedcc023a5cf5f9242a81
Reviewed-on: https://chromium-review.googlesource.com/594107
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47016}
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}
This reverts commit 176a2b24fb.
Reason for revert: performance regression on the benchmarks.
Original change's description:
> [heap] Reland "[heap] Allow a minimum semi-space size of 512K."
>
> This patch changes the semi-space size to 512K.
>
> > 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
>
> Change-Id: Iabc377cba2911b28d51b98bb5b85134d4e893632
> Reviewed-on: https://chromium-review.googlesource.com/575066
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46763}
TBR=ulan@chromium.org,mlippautz@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I80f8b6699f41e91512f7cec38060c829252ff95e
Reviewed-on: https://chromium-review.googlesource.com/591309
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46982}
Rather than storing the isolate in compiler dispatcher jobs, which gets
weird for jobs that are entirely off-thread, instead pass the isolate
in when stepping on the main thread.
This makes it clearer which steps must be executed on the main thread,
as they require the caller to explicitly give them access to the
isolate.
Bug: v8:6537
Change-Id: I02fff7c77fdcdbfb099a38235f94d8c1040699ac
Reviewed-on: https://chromium-review.googlesource.com/589437
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46962}
The approach to creating compiler dispatcher jobs for inner functions after
they had been parsed didn't provide the startup benifits we hoped for due
to the need to hold onto the whole zone memory AST while waiting for the
jobs to complete.
This CL removes the ability to create these compilation jobs (which was never
enabled by default anyway). Going forward we will potentially use the
parser task approach to parse+compile inner functions in their own job.
BUG=v8:5203
Change-Id: I63134746aa23b4aa6e3bfa17c539954890fd9b0f
Reviewed-on: https://chromium-review.googlesource.com/590007
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46948}
Reland of https://chromium-review.googlesource.com/c/558290/
Makes compiler dispatcher jobs an abstract interface, with unoptimized
compile jobs as an implementation of this interface.
Bug: v8:6537
Change-Id: Ia85781f72c7aaca497896ca4efa91ada97e43b1c
Reviewed-on: https://chromium-review.googlesource.com/589154
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46940}
Makes compiler dispatcher jobs an abstract interface, with unoptimized
compile jobs as an implementation of this interface.
Bug: v8:6537
Change-Id: I6569060a89c92d35e4bc7962623f77082a354934
Reviewed-on: https://chromium-review.googlesource.com/558290
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46931}
Moves parser internalization of ast values out of
ParseAny/Program/Function and instead internalizes during compile
finalization. Currently also internalizes during scope analysis if
there is a ScopeInfo to enable variable name lookups. We also
internalize early for FCG / AstGraphBuilder.
BUG=v8:5203
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ia766795947d847517b87cd5ea39797347083174b
Reviewed-on: https://chromium-review.googlesource.com/582407
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46904}
Remove need for shuffling of accumulator and operand registers when
suspending a generator
BUG=v8:6351
TBR=bmeurer@chromium.org
Change-Id: I372509adc03b9781716412b809639554fe16e372
Reviewed-on: https://chromium-review.googlesource.com/578377
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46883}
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}
Move ScopeInfo allocation out of DeclarationScope::Analyse and do it later
in the compile when finalizing unoptimized code generation. This is to enable
scope analysis to be done without heap allocation so it could run off-thread.
BUG=v8:5203
Change-Id: I954aacd4353925bbbd5a940d979027de2c52e1fd
Reviewed-on: https://chromium-review.googlesource.com/581108
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46862}
Add a third parameter to {AsHex} which specifies whether the prefix
"0x" should be printed. Also, add the {AsHexBytes} helper which
outputs the hex number as individual bytes separated by a whitespace.
Also add unit tests for both helpers.
Both helper will be used in an upcoming refactoring of wasm error
messages:
https://chromium-review.googlesource.com/c/565282R=titzer@chromium.org
Change-Id: I42d5ace9841ffb918cb4d6803b6347229e446097
Reviewed-on: https://chromium-review.googlesource.com/583448
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46859}
Properly hook up the (existing) IC slots for the CallWithSpread and
ConstructWithSpread bytecodes, and change the interpreter to collect
feedback (call counts and regular target function feedback) for those.
There's no integration with the Array constructor yet, since that
requires some yak shaving to thread through the AllocationSite to the
Array constructor stub. Once we have a solution for that, we can also
remove the current code duplication in the Call/Construct IC logic.
Also properly hook up the newly available feedback in TurboFan. This
will fix not only the missing target feedback, but more importantly
the tear-up decisions for optimization are correct now in the presence
of spread calls, and even more importantly the inlining heurstic has
proper call frequencies for those.
Some follow-up changes will be necessary to make sure we use the
feedback even for corner cases that aren't handled properly yet. Also
we should consider collecting feedback about the map of the spread
at some point to be able to always inline the spread calls.
Bug: v8:6399, v8:6527, v8:6630
Change-Id: I818dbcb411fd3951d8e9d31f5d7e794f8d60fa00
Reviewed-on: https://chromium-review.googlesource.com/582647
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46832}
Removes the SharedFunctionInfo field from the ParseInfo structure. Instead
require a SharedFunctionInfo to be explicitly passed to ParseFunction.
Also renames GetUnoptimizedCode to CompileUnoptimizedFunction to make it
clear it should only be called for non-top-level code.
BUG=v8:5203
Change-Id: Ibce016e6a5290c3685f7f0a2f5fb1eb2df2ffc3b
Reviewed-on: https://chromium-review.googlesource.com/574589
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46814}
This reverts commit 4851745fe3.
Reason for revert: Top crasher on Canary, see https://crbug.com/746935
Original change's description:
> [literals] Introduce CreateEmptyArrayLiteral Bytecode
>
> 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
> Change-Id: Id5dbdac0ea8e24dd474e679c902c6e4a2957af1d
> Reviewed-on: https://chromium-review.googlesource.com/567079
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46752}
TBR=rmcilroy@chromium.org,mstarzinger@chromium.org,cbruni@chromium.org,ishell@chromium.org,rmcilroy@google.com
Bug: v8:6211, chromium:746935
Change-Id: Ibf19a923688c071d03bad8661a10e08f8414db56
Reviewed-on: https://chromium-review.googlesource.com/580193
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46804}
Inlining heuristics in Turbofan used ast node count. Bytecode size
is a better approximation of the size of the graph than the
ast node count. This cl changes the heuristics to use the bytecode
size instead. Also removing the ast_node_count filed in the shared
function info. It was used only for the inlining heuristics.
Also removed the max_inlined_source_size flag which is no longer used.
Bug:
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I8a2d2509c8e8d2779b33b817bb217de203d54ec3
Reviewed-on: https://chromium-review.googlesource.com/570055
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46771}
There remained a few of regressions and we didn't see any significant
improvement in the real world with this turned on. This CL reverts all the
StringConcat bytecode work which landed.
BUG=v8:6243
Change-Id: I832eb72e880ad41411dbec8fe29f71ef0f2025c8
Reviewed-on: https://chromium-review.googlesource.com/575130
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46769}
This patch changes the semi-space size to 512K.
> 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
Change-Id: Iabc377cba2911b28d51b98bb5b85134d4e893632
Reviewed-on: https://chromium-review.googlesource.com/575066
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46763}
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}
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
Change-Id: Id5dbdac0ea8e24dd474e679c902c6e4a2957af1d
Reviewed-on: https://chromium-review.googlesource.com/567079
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46752}
Nop bytecodes are required only for break locations in debugger. Since nop bytecode doesn't change program state we can remove all of them.
There are at least two changes which this CL produce:
- we don't provide break position when we load local variable (still provide when load variable from global),
- we don't provide break position for statements without actual break positions (e.g. "a;") - these expressions should be super rare and user always can set breakpoint before or after this statement.
More details in one pager: https://docs.google.com/a/google.com/document/d/1JXlQpfMa9vRojbE272b6GMBbrfh6m_00135iAUOJEz8/edit?usp=sharing
Bug: v8:6425
Change-Id: I4aee73d497a84f7b5d89caa6dda6d3060567dfda
Reviewed-on: https://chromium-review.googlesource.com/543161
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46742}
Signature maps should only be updated, but never copied. We had a bug
because we accidentally updated a copy of the map. This refactoring
prevents any such bugs in the future, and fixes more occurences where
we accidentally copied structs containing a signature map (the move-only
constraint also extends to all structs containing a signature map).
Drive-by: Make InstanceBuilder::NeedsWrappers const.
R=titzer@chromium.org
Bug: chromium:741750
Change-Id: Id919203d8c4078e608a1163e5c790c97d06a9753
Reviewed-on: https://chromium-review.googlesource.com/571791
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46728}
There are wasm tests which are supposed to fail, but they fail for the
wrong reason (because blocks do not declare their type).
This CL fixes this, and changes the error output to contain the
expected and observed results for better debuggability.
R=titzer@chromium.org
Change-Id: Ibbd7883e43677a91f858575578586c9e9d1641d5
Reviewed-on: https://chromium-review.googlesource.com/571810
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46698}
SuspendFlags was originally used by the suspend operation to determine
which field to record the bytecode offset of a suspended generator, and
the value the generator was resumed with. For async generators, await
operations would use a separate field, in order to preserve the previous
yield input value. This was important to ensure `function.sent`
continued to function correctly.
As function.sent is being retired, this allows the removal of support
for that. Given that this was the only real need for SuspendFlags in the
first place (with other uses tacked on as a hack), this involves several
other changes as well:
- Modification of MacroAssembler AssertGeneratorObject. No longer
accepts a SuspendFlags parameter to determine which type of check to
perform.
- Removal of `flags` operand from SuspendGenerator bytecode, and the
GeneratorStore js-operator.
- Removal of `flags` parameter from ResumeGeneratorTrampoline builtins.
- Removal of Runtime functions, interpreter intrinsics and
AccessBuilders associated with the [[await_input_or_debug_pos]] field
in JSAsyncGeneratorObject, as this field no longer exists.
- Addition of a new `Yield` AST node (subclass of Suspend) in order to
prevent the need for the other SuspendFlag values.
BUG=v8:5855
TBR=bmeurer@chromium.org
Change-Id: Iff2881e4742497fe5b774915e988c3d9d8fbe487
Reviewed-on: https://chromium-review.googlesource.com/570485
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46683}
Returning a double from ToFloat64 could lead to problems. If value_ has the bit
representation of a signaling NaN (sNaN), then returning it as double can cause
the signaling bit to flip, and value_ is returned as a quiet NaN (qNaN).
The usage of the Double wrapper also, makes the function ToFloat64AsInt
redundant, since the Double wrapper already has the AsUint64() method,
which returns an uint64_t.
R=ahaas@chromium.org
Change-Id: I1e627b97b2fb6110fc702fe58f2b83eb343e9ca2
Reviewed-on: https://chromium-review.googlesource.com/563215
Commit-Queue: Enrico Bacis <enricobacis@google.com>
Reviewed-by: Martyn Capewell <martyn.capewell@arm.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46680}
Currently every VirtualMemory allocation on 64-bit systems
uses a random 46-bit address hint for ASLR.
This leads to wired page leak on MacOS discovered by Erik Chen (see
crbug.com/700928 and https://chromium-review.googlesource.com/c/557958/):
"The Darwin kernel [as of macOS 10.12.5] does not clean up page directory
entries [PDE] created from mmap or mach_vm_allocate, even after
the region is destroyed. Using a virtual address space that is too large
causes a leak of about 1 wired [can never be paged out] page per call to
mmap(). The page is only reclaimed when the process is killed."
This patch changes VirtualMemory to accept the hint parameter explicitly.
On MacOS the hints are confined to 4GB contiguous region. Algorithm:
- On startup, set heap.mmap_region_base_ to a random address.
- For each mmap use heap.mmap_region_base_ + (random_offset % (4*GB)).
BUG=chromium:700928
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I2ae6a024e02fbe63f940105d7920b57c19abacc6
Reviewed-on: https://chromium-review.googlesource.com/558876
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46656}
The tail call implementation is hidden behind the --harmony-tailcalls
flag, which is off-by-default (and has been unstaged since February).
It is known to be broken in a variety of cases, including clusterfuzz
security issues (see sample Chromium issues below). To avoid letting
the implementation bitrot further on trunk, this patch removes it.
Bug: v8:4698, chromium:636914, chromium:724746
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I9cb547101456a582374fdf7b1a3f044a9ef33e5c
Reviewed-on: https://chromium-review.googlesource.com/569069
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46651}
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}
There is just one version now, called IsPowerOfTwo. It accepts any
integral type.
There is one slight semantical change: Called with kMinInt, it
previously returned true, because the argument was implicitly casted to
an unsigned. It's now (correctly) returning false, so I had to add
special handlings of kMinInt in machine-operator-reducer before calling
IsPowerOfTwo on that value.
R=mlippautz@chromium.org,mstarzinger@chromium.org,jgruber@chromium.org,ishell@chromium.org,yangguo@chromium.org
Change-Id: Idc112a89034cdc8c03365b778b33b1c29fefb38d
Reviewed-on: https://chromium-review.googlesource.com/568140
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46627}
This CL changes the USE macro to accept more than one parameter.
This is particularly interesting for calling a method on each type in a
parameter pack, as in:
template<typename... T>
void foo(T&&... ts) {
USE(do_something(ts)...);
}
Drive-by fix: Allow to pass arbitrary types to USE, including
references. This might prevent a copy for pass-by-value.
R=ishell@chromium.org, tebbi@chromium.org
Also-by: tebbi@chromium.org
Change-Id: I544e83bb996aaa638e7512295973dd3e742254bc
Reviewed-on: https://chromium-review.googlesource.com/567507
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46626}
This makes it possible for automated tests to distinguish between CHECK
failures and DCHECK failures, the latter of which will continue to run
in release builds after the assertion failure point.
Change-Id: Ie26978c0342d401a8c85f3261749739195087579
Reviewed-on: https://chromium-review.googlesource.com/565515
Commit-Queue: Daniel Clifford <danno@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46596}
This CL moves collected source range information out of AST nodes
and into a side table stored on ParseInfo. The side table is only
created if block coverage is enabled, so there's almost no memory
overhead in the standard case.
Change-Id: I41871b8425ebbc6217d82d3ad26b5fc9e5d68ecb
Reviewed-on: https://chromium-review.googlesource.com/566808
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46590}
Each reducer now has a virtual reducer_name function, returning its name
(the name of the class containing this reducer). This gets displayed when
using the --trace_turbo_reduction flag. Also when using this flags more
messages are displayed.
Actually when a node is replaced in-place (which is called an update
of the node), other reducers can still update it right after the
in-place replacement. When a node is really replaced (not in-place),
then we stop trying to apply reducers to it before we propagate the
reduction through the relevant nodes.
Before a message got printed only for the last reduction it went
through. So in case a node was reduced in-place several times
in a row, only the last update was printed, or none at all if after
being reduced in-place it got reduced by being replaced by another
node: only the non-in-place replacement was showed.
Now each time an in-place reduction is applied to a node, a message
gets printed.
Bug:
Change-Id: Id0f816fecd44c01d0253966c6decc4861be0c2fa
Reviewed-on: https://chromium-review.googlesource.com/563365
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Alexandre Talon <alexandret@google.com>
Cr-Commit-Position: refs/heads/master@{#46552}
Adds missing opcodes for exception handling for the function body decoder.
Also adds error messages if the exception handling construct is not yet
functional.
Note that the previous prototype for catch and throw have been marked
as not yet functional. This was done because it doesn't model
exceptions the way the proposal suggests. Rather, they implement a
hard-coded (c++ model) of exceptions.
Bug: v8:6577
Change-Id: Ife170b9f0cb2be91b11082e43c4795ce81a427dc
Reviewed-on: https://chromium-review.googlesource.com/564138
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46540}
Modifies V8 to be able to parse the exception section (defining
exception types), when the experimental_wasm_eh flag is true.
Bug: v8:6577
Change-Id: I5d8b3fddaf5b0dec6b14ddd0992f9fb883e8dc90
Reviewed-on: https://chromium-review.googlesource.com/561757
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46539}
This will allow for passing more than one variable. This is
particularly interesting for calling a method on each type in a
parameter pack, as in:
template<typename... T>
void foo(T&&... ts) {
USE(do_something(ts)...);
}
Drive-by fix: Allow to pass arbitrary types to USE, including
references. This might prevent a copy for pass-by-value.
R=ishell@chromium.org
Change-Id: I8f894d730bbcd195ed83705f98771994b4bc906f
Reviewed-on: https://chromium-review.googlesource.com/565561
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46527}
An invalid I32V value as index could be used to get a valid
WasmFunction.
R=clemensh@chromium.org
Bug: chromium:735887
Change-Id: I5fbfa01fc3300d86a4a2ba9bcbb86fc02f231ef9
Reviewed-on: https://chromium-review.googlesource.com/561536
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46504}
In the original CL I moved an error check backwards, unfortunately
behind a vector lookup which should not happen when there is an error.
Now I also move the vector lookup backwards.
Original message:
We stored the size of a function body before we check that
these values are valid. This caused a failing DCHECK in the constructor
of WireBytesRef which checked for integer overflows. With this CL we
check the size of the function body before we create the WireBytesRef.
R=clemensh@chromium.org
Bug: chromium:738097
Change-Id: Ie65b3cfcbcd6bdb3f04b0760673d9c7b7a0d1057
Reviewed-on: https://chromium-review.googlesource.com/561519
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46453}
This reverts commit 6c8aed76ff.
Reason for revert: Breaks some debug bots:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug/builds/16754https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20debug/builds/17654
Original change's description:
> [wasm] Check the size of a function body before storing it
>
> We stored the size of a function body before we check that
> these values are valid. This caused a failing DCHECK in the constructor
> of WireBytesRef which checked for integer overflows. With this CL we
> check the size of the function body before we create the WireBytesRef.
>
> R=clemensh@chromium.org
>
> Bug: chromium:738097
> Change-Id: I18f8b628c1499aae9c8e9340ea73c87f19e6f1d7
> Reviewed-on: https://chromium-review.googlesource.com/561000
> Commit-Queue: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46442}
TBR=ahaas@chromium.org,clemensh@chromium.org
Change-Id: Ifd533c0dee369c746bc97fea13275ebc09ed5eff
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:738097
Reviewed-on: https://chromium-review.googlesource.com/561517
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46445}
We stored the size of a function body before we check that
these values are valid. This caused a failing DCHECK in the constructor
of WireBytesRef which checked for integer overflows. With this CL we
check the size of the function body before we create the WireBytesRef.
R=clemensh@chromium.org
Bug: chromium:738097
Change-Id: I18f8b628c1499aae9c8e9340ea73c87f19e6f1d7
Reviewed-on: https://chromium-review.googlesource.com/561000
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46442}
To be used with tuples of heap objects and sizes.
Bug: chromium:738865
Change-Id: I29d9cf98bb2097cc8e1616aaf19a251507ffbd9e
Reviewed-on: https://chromium-review.googlesource.com/559050
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46407}
In case of LAP(lazy accessor pair), the function's creation context
must be equal to the accessor holder's creation context, so this CL
changes the current context to the accessor holder's creation context.
BUG=v8:6156
Review-Url: https://codereview.chromium.org/2770003002
Cr-Commit-Position: refs/heads/master@{#46406}
Instead of having the "next step" state machine logic in the compiler
dispatcher, move it to the compiler dispatcher job. This is a
prerequisite to having more generic jobs with slightly different state
sets, such as an optimizing compile job.
Bug: v8:6537
Change-Id: Ib7319222f26dbc0e2afc95573b06d813825afde3
Reviewed-on: https://chromium-review.googlesource.com/554751
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46396}
On Loongson 3A, MADD/MSUB instructions are actually fused MADD/MSUB and
they can cause failure in some of the tests. Since this optimization is
rarely used, and not used at all on MIPS64R6, MADD/MSUB instructions
are removed from the source base.
TEST=
BUG=
Change-Id: Ifbb5508a62731bb061f332864ffd1e210e97f963
Reviewed-on: https://chromium-review.googlesource.com/558066
Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Cr-Commit-Position: refs/heads/master@{#46387}
With FCG no longer able to deoptimize, we can remove the "push" version
of output frame state combine, as deoptimisation to bytecode is always
the PokeAt variant.
Bug: v8:6409
Change-Id: I9b6d38a7441ca834835615c238228fa8a75a027b
Reviewed-on: https://chromium-review.googlesource.com/557866
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46355}
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: I1f1b08ca6853347c00070f000c309d839ff8a4bb
Reviewed-on: https://chromium-review.googlesource.com/552541
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46349}
Removes from CL https://codereview.chromium.org/2929853003 code to fix
histogram timers in class WasmCompilationUnit. This was done because
the CL was reverted due to errors caused by background compiles that
updated UMA histogram timers.
The goal of this CL is to reland the remaining portion of the reverted
CL.
Bug:v8:6361
Change-Id: Ic03ceb118734bd55c463a843521bcd5b09342afe
Reviewed-on: https://chromium-review.googlesource.com/550196
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Karl Schimpf <kschimpf@google.com>
Cr-Commit-Position: refs/heads/master@{#46268}
This is a fix to https://codereview.chromium.org/2929853003 that got
reverted. The DCHECK checked to see that it was not in a background
thread. While this is a property we want for v8, it is also used
by blink, and blink violates this property.
Therefore, this CL removes the DCHECK for now.
BUG=v8:6361
Review-Url: https://codereview.chromium.org/2961443002
Cr-Commit-Position: refs/heads/master@{#46190}
Move bytecode array writing logic into the array builder, allowing us to
remove the bytecode array writer and bytecode node, and convert runtime
operand writing to compile-time bytecode operand writing using the
information statically known at compile time.
Bug: v8:6474
Change-Id: I210cd9897fd41293745614e4a253c7c251dfffc9
Reviewed-on: https://chromium-review.googlesource.com/533055
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46183}
HistoryTimer's can't run in the background because they use a timer
with a simple api of Start() and Stop(). This CL fixes this problem
by building a base class TimedHistogram that doesn't have a timer.
The class HistoryTimer is modified to use this base class so that
uses that run on the foreground thread do not need to be modified.
It also adds a new class TimedHistogramScope that defines the timer
in this class. This allows the corresopnding TimedHistogram class to
be type safe.
BUG=v8:6361
Review-Url: https://codereview.chromium.org/2929853003
Cr-Commit-Position: refs/heads/master@{#46150}
In edge cases such as the following, sloppy-mode block-scoped function
hoisting is expected to occur:
eval(`
with({a: 1}) {
function a() {}
}
`)
In this case, there should be the equivalent of a var declaration
outside of the eval, which gets set to the value of the local function
a when the body of the with is executed.
Previously, the way that var declarations are hoisted out of eval
meant that the assignment to that var was an ordinary DYNAMIC_GLOBAL
assignment. However, such a lookup mode meant that the object in the
with scope received the assignment!
This patch fixes that error by marking the assignments produced by
the sloppy mode block scoped function hoisting desugaring so as to
generate a different runtime call which skips with scopes.
Bug: chromium:720247, v8:5135
Change-Id: Ie36322ddc9ca848bf680163e8c016f50d4597748
Reviewed-on: https://chromium-review.googlesource.com/529230
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46116}
This CL also reduces the minimum semi-space size to 512K.
BUG=chromium:716032
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_rel_ng
Review-Url: https://codereview.chromium.org/2942543002
Cr-Commit-Position: refs/heads/master@{#45992}
Use ICU to check ID_Start, ID_Continue and WhiteSpace even for BMP
when V8_INTL_SUPPORT is on (which is default).
Change LineTerminator::Is() to check 4 code points from
ES#sec-line-terminators instead of using tables and Lookup function.
Remove Lowercase::Is(). It's not used anywhere.
Update webkit/{ToNumber,parseFloat}.js to have the correct expectation
for U+180E and the corresponding expected files. This is a follow-up to
an earlier change ( https://codereview.chromium.org/2720953003 ).
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_win_dbg,v8_mac_dbg;master.tryserver.chromium.android:android_arm64_dbg_recipe
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_noi18n_rel_ng
BUG=v8:5370,v8:5155
TEST=unittests --gtest_filter=CharP*
TEST=webkit: ToNumber, parseFloat
TEST=test262: built-ins/Number/S9.3*, built-ins/parse{Int,Float}/S15*
TEST=test262: language/white-space/mong*
TEST=test262: built-ins/String/prototype/trim/u180e
TEST=mjsunit: whitespaces
Review-Url: https://codereview.chromium.org/2331303002
Cr-Commit-Position: refs/heads/master@{#45957}
This removes support for reconstructing stack frames for full-codegen
from the deoptimizer. We no longer deoptimize to such code. This also
allows us to remove the {DeoptimizationOutputData} data structure.
R=jarin@chromium.org
BUG=v8:6409
Change-Id: Id28ef05aa985b6877b5c91926a7d7d0d6d6e661d
Reviewed-on: https://chromium-review.googlesource.com/535537
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45943}
- Eliminates S32x4Shuffle, S16x8Shuffle opcodes. All shuffles are subsumed
by S8x16Shuffle. This aligns us with the latest WASM SIMD spec.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2923103003
Cr-Commit-Position: refs/heads/master@{#45929}
The AST-based graph builder is by now only used for asm.js code. This
change hard-codes this assumption into the compilation pipeline and
hence allows us to remove support pertaining to deoptimization from
optimized code that was not derived from bytecode.
R=jarin@chromium.org
BUG=v8:6409
Change-Id: I1138f16f663db5b9ee34e3110184067b8fcffc8b
Reviewed-on: https://chromium-review.googlesource.com/531026
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45887}
Distinguish the compilation caches instead by the shape of the key (cow fixed
array map meaning eval or script cache). This allows us to remove the odd "key"
argument from Shrink, EnsureCapacity and Rehash.
Bug: v8:6474
Change-Id: Ibcad22813063c3a9050da13dc51359f5b59e1254
Reviewed-on: https://chromium-review.googlesource.com/531184
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45873}
The fence ensures that the concurrent marker observes consistent state
of mark-bits for newly allocated objects.
The patch also moves Bitmap functions to cc file and removes non-atomic
versions of SetRange and ClearRange.
BUG=chromium:694255
Change-Id: I466bef654f3d4a21b7aaebdfd6d5a39ddb5f2a0a
Reviewed-on: https://chromium-review.googlesource.com/530367
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45868}
The EnableFlagScope is useful also for non-boolean flags. With the
template we can use if for example in the wasm fuzzers to reduce the
maximum memory size of a wasm module.
In addition I put the EnableFlagScope into the v8::internal namespace,
and I fixed a small typo.
BUG=v8:6474
R=clemensh@chromium.org
Change-Id: Iae5d5c058c334cd0f9e09d20adfd229fc2d6c585
Reviewed-on: https://chromium-review.googlesource.com/531005
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45862}
In many places in WasmModule and contained structs we store references
into the wire bytes as pairs of offset and length.
This CL introduces a WireBytesRef struct which encapsulates these two
connected fields. This makes it easier to pass them and assign them as
one unit.
R=ahaas@chromium.org, mtrofin@chromium.org
BUG=v8:6474
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I4f2a40d848a51dc6f6f599f9253c3c6ed6e51627
Reviewed-on: https://chromium-review.googlesource.com/530687
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45859}
This CL removes most occurences of "WASM" from outputs and comments in
the code. They are replaced either by "WebAssembly" or (especially in
comments) "wasm". These are the spellings officially proposed on
http://webassembly.org/.
R=ahaas@chromium.org
BUG=v8:6474
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Id39fa5e25591678263745a4eab266db546e65983
Reviewed-on: https://chromium-review.googlesource.com/529085
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45824}
This CL takes advantage of the fact that StatsCounter is now local to
the Counters class. This includes:
1) Method StatsTable::SetCreateHistogramFunction() was only called in
one spot (in api.cc), which also called Counters::ResetHistograms()
and Counters::InitializeHistorgram(). InitializeHistogram can be
folded into Histogram.Reset().
2) Since Histogram::Reset() now regenerats the histogram, we no longer
need the field lookup_done_. Therefore there is no longer a race
between updating ptr_ and lookup_done_, making the Histogram class
thread safe.
3) Made the constructors of several classes private (except for class
Counters), minimizing the scope that they are used. When the couldn't
be moved, add comment that they were public only for test cases.
4) Removed the need for a mutex lock on StatsCounter::Reset(), since
it is now guaranteed to only be called when
StatsTable::SetCounterFunction() is called.
BUG=v8:6361
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_rel_ng
Review-Url: https://codereview.chromium.org/2918703002
Cr-Commit-Position: refs/heads/master@{#45791}
Adds support for lowering of ToPrimitiveToString and StringConcat bytecodes
to the corresponding builtins. As part of this, moves the interpreter
implementation of these operations into the appropriate builtin generators
and add builtin support for them.
Also adds TailCallRuntimeN operator to code-assembler which enables tail calling
a runtime function when the arguments have already been pushed onto the stack.
BUG=v8:6243
Change-Id: Id5c851bc42e4ff490d9a23a8990ae331c7eac73e
Reviewed-on: https://chromium-review.googlesource.com/515362
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45756}
This CL implements general infrastructure for block coverage together with
initial support for if-statements.
Coverage output can be generated in lcov format by d8 as follows:
$ d8 --block-coverage --lcov=$(echo ~/simple-if.lcov) ~/simple-if.js
$ genhtml ~/simple-if.lcov -o ~/simple-if
$ chrome ~/simple-if/index.html
A high level overview of the implementation follows:
The parser now collects source ranges unconditionally for relevant AST nodes.
Memory overhead is very low and this seemed like the cleanest and simplest
alternative.
Bytecode generation uses these ranges to allocate coverage slots and insert
IncBlockCounter instructions (e.g. at the beginning of then- and else blocks
for if-statements). The slot-range mapping is generated here and passed on
through CompilationInfo, and is later accessible through the
SharedFunctionInfo.
The IncBlockCounter bytecode fetches the slot-range mapping (called
CoverageInfo) from the shared function info and simply increments the counter.
We don't collect native-context-specific counts as they are irrelevant to our
use-cases.
Coverage information is finally generated on-demand through Coverage::Collect.
The only current consumer is a d8 front-end with lcov-style output, but the
short-term goal is to expose this through the inspector protocol.
BUG=v8:6000
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_rel_ng
Review-Url: https://codereview.chromium.org/2882973002
Cr-Commit-Position: refs/heads/master@{#45737}
The boundary cells of the mark-bitmap can be access concurrently,
so they need to be updated with atomic CAS.
BUG=chromium:694255
Change-Id: Ibe85f00c8b4ccc61edc43b400c5b08a6d0ba620e
Reviewed-on: https://chromium-review.googlesource.com/521103
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45731}
Introduces ThrowReferenceErrorIfHole / ThrowSuperNotCalledIfHole
/ ThrowSuperAlreadyCalledIfNotHole bytecodes to handle hole checks.
In the bytecode-graph builder they are handled by introducing a deopt point
instead of adding explicit control flow. JumpIfNotHole / JumpIfNotHoleConstant
bytecodes are removed since they are no longer required.
Bug: v8:4280, v8:6383
Change-Id: I58b70c556b0ffa30e41a0cd44016874c3e9c5fe1
Reviewed-on: https://chromium-review.googlesource.com/509613
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@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@{#45720}
Unfortunately, even for an empty generator, we still use 8 register for various things (try-finally, copies of generator object, parser-introduced temporaries). I will try to get rid of these in separate CLs.
Changes:
- SuspendGenerator bytecode now takes register list to save.
- ResumeGenerator was split into two bytecodes:
* Resume generator reads the state out and marks the generator as
'executing'.
* RestoreGeneratorRegisters reloads the registers from
the generator.
+ this required adding support for output register list.
- Introduced generator_object_ register in the bytecode generator.
* in subsequent CLs, I will make better use of it, the goal is
to get rid if the .generator_object local variable.
- Taught register optimizer to flush unassigned registers.
BUG=v8:6379
Review-Url: https://codereview.chromium.org/2894293003
Cr-Commit-Position: refs/heads/master@{#45675}
Most prototype implementations are not fully supported in the
interpreter. This is the case at least for exception handling, simd, and
atomics. Any function can be redirected to the interpreter though,
either by passing --wasm-interpret-all, or by dynamically redirecting to
the interpreter for debugging.
Making the flags experimental keeps the fuzzer from playing around with
these flags.
Drive-by: Refactor tests which explicitly set the prototype flag to use
a new scope for that.
R=ahaas@chromium.org
BUG=chromium:727584
Change-Id: I67da79f579f1ac93c67189afef40c6524bdd4430
Reviewed-on: https://chromium-review.googlesource.com/519402
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45639}
Compilation failure is result to overloaded-virtual warning
treated as error.
BUG=
Review-Url: https://codereview.chromium.org/2895923002
Cr-Commit-Position: refs/heads/master@{#45525}
Rather than trying to pre-calculate the number of contexts required during
scope analysis, instead just allocate context registers in the register
allocator. This reduces frame size a bit due to reusing of registers when
the context isn't pushed.
BUG=v8:6322, chromium:716265
Change-Id: I145e38fcb3797a3b86c91e90ea9326a6e55b9b89
Reviewed-on: https://chromium-review.googlesource.com/514087
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45522}
Perf Sheriffs: This CL may change performance on various benchmarks.
BUG=chromium:716032
Review-Url: https://codereview.chromium.org/2895473003
Cr-Commit-Position: refs/heads/master@{#45495}
Special cases addition expressions where one of the sides is known to be a
string to enable chains of string additions to be transformed into a series
of ToPrimitiveToString operations followed by a single string concatenation
at the end of the chain of additions. This should avoid creating temporary
strings for each of the string additions (in essence this is an automated
string builder).
BUG=v8:6243
Change-Id: I44977d6dad00ee906f251c4bd9cab27e160c09d1
Reviewed-on: https://chromium-review.googlesource.com/493966
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45453}
Bug:v8:6055
Change-Id: Ifeac048e5bee2d1782cdaaabe9f5257129b7be0e
Reviewed-on: https://chromium-review.googlesource.com/508528
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Loo Rong Jie <loorongjie@gmail.com>
Cr-Commit-Position: refs/heads/master@{#45437}
All targets (at least on sanitizer builds) unconditionally depend
on //build/config/sanitizers:deps.
It is necessary for bug 593874 that all targets now also depend
on //buildtools/third_party/libc++:libcxx_proxy. This requires
adding a new "global dependency": //build/config:exe_and_shlib_deps.
This CL updates references to sanitizers:deps to instead refer to
//build/config:exe_and_shlib_deps.
BUG=chromium:723069
R=bradnelson@chromium.org
Review-Url: https://codereview.chromium.org/2894013003
Cr-Commit-Position: refs/heads/master@{#45435}
Adds a generic job that is based on items and tasks.
Bug: chromium:651354
Change-Id: I378e04741c5761ea6c4a74816b9af8ea22867f53
Reviewed-on: https://chromium-review.googlesource.com/506075
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45353}
Reland d8bfdb7a99
Original commit message:
If alignment parameter is set, the memory returned by the
StackSlot operator will be aligned according to the parameter.
The implementation goes like this. If alignment parameter is set
we allocate a bit more memory than actually needed and so we
can move the beginning of the StackSlot in order to have it aligned.
BUG=
Review-Url: https://codereview.chromium.org/2874713003
Cr-Commit-Position: refs/heads/master@{#45339}
Introduce a new SwitchSmiTable bytecode for generators, which does a
table lookup for the accumulator value in a jump table stored in the
constant array pool. This removes the if-else chains at resumable
function/loop headers.
As a drive-by, add a scoped environment saving struct to the bytecode
graph builder.
Bug: v8:6351
Bug: v8:6366
Change-Id: I63be15a8b599d6684c7df19dedb8860562678fb0
Reviewed-on: https://chromium-review.googlesource.com/500271
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45314}
The current implementation failed when comparing an integral type to a
reference to an integral type of different signedness (see updated
unittest).
This CL fixes the checks to actually test the std::decay<T>::type,
i.e. with all references, const or volatile modifiers stripped.
R=jochen@chromium.org, ishell@chromium.org
TEST=unittests/LoggingTest.CompareWithReferenceType
Change-Id: Ib0ac077a91e0409ada7a80b68150cb98cbdd32f1
Reviewed-on: https://chromium-review.googlesource.com/502814
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45271}
This CL implements a streaming decoder which takes the bytes
of a wasm module as an input, potentially split into multiple
chunks, and decodes them into segments. Each segment either
contains the payload of a whole section, or the code of a
single function. The goal is that the streaming decoder is
used for streaming compilation. That's where the interface
comes from, see
(https://cs.chromium.org/chromium/src/v8/include/v8.h?q=OnBytesReceived&sq=package:chromium&l=4060)
Error positions are not reported correctly at the moment. I
plan to do this in a separate CL.
Change-Id: I6e3df6a91945c7baec2dc4f5de2e5f47636083df
Reviewed-on: https://chromium-review.googlesource.com/471350
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45250}
One of the serializer fuzzers passes in random data to the deserializer,
which can then be used to deserialize a JSRegExp instance with random flag
contents. This can cause issues since the JSRegExp::Flag enum statically
contains kDotAll - but it is only valid to set kDotAll iff
FLAG_harmony_regexp_dotall is set.
This CL verifies deserialized flags before constructing the JSRegExp
and bails out if they are invalid.
R=jbroman@chromium.org,yangguo@chromium.org
BUG=chromium:719280
Review-Url: https://codereview.chromium.org/2870743004
Cr-Commit-Position: refs/heads/master@{#45222}
That's cleaner than having every target depending on v8 include icu
itself.
BUG=none
R=machenbach@chromium.org
Change-Id: Icaa9e8670718664041a6efe2622366c89b733f81
Reviewed-on: https://chromium-review.googlesource.com/500127
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45196}
Intrinsic and generic lowering for generator object creation. In a follow-on, create lowering will be addressed.
BUG=v8:6352
Review-Url: https://codereview.chromium.org/2862213002
Cr-Commit-Position: refs/heads/master@{#45171}
Make ModuleResult and FunctionResult return Result<std::unique_ptr<X>>.
This makes memory ownership and transfer of ownership more clear and
avoids a lot of manual releases of the referenced native heap object.
R=ahaas@chromium.org
Change-Id: I7a3f5bd7761b6ae1ebdc7d17ff1b96a8df599871
Reviewed-on: https://chromium-review.googlesource.com/498352
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45160}
This adaptation will allow build v8 when the component is defined as
shared library. Without this, at linking phase of the unittests will be
displayed error messages for undefined references.
TEST=
BUG=
Review-Url: https://codereview.chromium.org/2853483002
Cr-Commit-Position: refs/heads/master@{#45126}
- Removes primitive shuffle opcodes.
- Adds Shuffle opcode for S32x4, S16x8, S8x16.
- Adds code to ARM instruction selector to pick best opcodes for some
common shuffle patterns.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2847663005
Cr-Commit-Position: refs/heads/master@{#45104}
AllocateGuarded previously fell back on Allocate and then called Guard
to set the protection to PROT_NONE. Linux commits RW memory, but the
important thing here is to reserve the address space without committing
it. This change adds a new variant of Allocate that takes explicit
permission bits so that AllocateGuarded allocates non-RW memory from the
beginning.
Bug: v8:6320
Change-Id: I7962acbed09938951bf3bb4af2d1f302adba2547
Reviewed-on: https://chromium-review.googlesource.com/491928
Commit-Queue: Eric Holk <eholk@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45075}
In the spirit of the full MC, we evacuate and update pointers in parallel for
the young generation.
The collectors are connected during incremental marking when mark bits are
transferred from the young generation bitmap to the old generation bitmap.
The evacuation phase cannot (yet) move pages and relies completely on copying
objects.
BUG=chromium:651354
Review-Url: https://codereview.chromium.org/2796233003
Cr-Commit-Position: refs/heads/master@{#45074}
During computation of the side table, ignore stack effects of
instructions following any unconditional jump in the same block
(|unreachable|, |br|, |br_table| or |return| jump out of the block).
Without this fix, the current stack height might underflow, or we compute an
unnecessarily large max_stack_height_. Note that those instruction will
never get executed anyway.
Hence, we don't need to store any side table information for such
unreachable code.
R=rossberg@chromium.org
BUG=chromium:716936, chromium:715990
Change-Id: I282f7f18ba1b972a112210e692f6cd05cf32308c
Reviewed-on: https://chromium-review.googlesource.com/493266
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45059}
This patch adds a concurrent marking deque that exposes the same interface
for the main thread as the existing marking deque.
The matching interface makes the concurrent marking deque a drop-in
replacement for the sequential marking deque without any change in
mark-compactor and incremental marker.
BUG=chromium:694255
Review-Url: https://codereview.chromium.org/2810893002
Cr-Commit-Position: refs/heads/master@{#45042}
BytecodeRegisterOptimizer had special handling for the case when parameters
is 0. This is not possible from valid javascript. It exists because some
tests do not take this into account. Fixed tests and removed the special
handling.
Also removed a TODO, which is already done here:
https://codereview.chromium.org/2227203002/
Bug: v8:4280,v8:6325
Change-Id: Idc17af12ad9292c13a6677aa4c8b88d21f4adf81
Reviewed-on: https://chromium-review.googlesource.com/490308
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45036}
Remains to port these fixes over to gyp.
R=machenbach@chromium.org, jkummerow@chromium.org, mstarzinger@chromium.org
BUG=v8:6325
Change-Id: I3bebbc6d0ec52fcb60e3d51acd27e616f51d3dbb
Reviewed-on: https://chromium-review.googlesource.com/490108
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45026}
This avoids generating redundant code for different template
instantiations.
I also introduce getters instead of accessing the fields directly.
R=ahaas@chromium.org
BUG=v8:6325
Change-Id: I3e0eca9ef6a01e0a3ebb73f4f357bcb59e120f43
Reviewed-on: https://chromium-review.googlesource.com/490166
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44976}
With fix for architectures where x<<32 != x.
Original change's description:
> [base] Introduce RoundUpToPowerOfTwo64
>
> And fix RoundUpToPowerOfTwo32 to return 1 for the input 0.
> 0 is no power of two.
> Beside being the correct value, this also avoids a special case in the
> (new) fast path using the number of leading zeros.
>
> R=jochen@chromium.org, ahaas@chromium.org
>
> Change-Id: I87173495e13b334954bcebbb55724fb666dfa809
> Reviewed-on: https://chromium-review.googlesource.com/488143
> Reviewed-by: Jochen Eisinger <jochen@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#44925}
TBR=ahaas@chromium.org,jochen@chromium.org,clemensh@chromium.org,v8-reviews@googlegroups.com
Change-Id: I7b4719d84a419bb7b38e3b5c9d6d183275087ace
Reviewed-on: https://chromium-review.googlesource.com/488981
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44951}
This reverts commit 9ceaf21272.
Reason for revert: Fails on arm: http://build.chromium.org/p/client.v8.ports/builders/V8%20Arm%20-%20debug/builds/2950/steps/Check/logs/Bits.RoundUpToPowerOf..
Original change's description:
> [base] Introduce RoundUpToPowerOfTwo64
>
> And fix RoundUpToPowerOfTwo32 to return 1 for the input 0.
> 0 is no power of two.
> Beside being the correct value, this also avoids a special case in the
> (new) fast path using the number of leading zeros.
>
> R=jochen@chromium.org, ahaas@chromium.org
>
> Change-Id: I87173495e13b334954bcebbb55724fb666dfa809
> Reviewed-on: https://chromium-review.googlesource.com/488143
> Reviewed-by: Jochen Eisinger <jochen@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#44925}
TBR=ahaas@chromium.org,jochen@chromium.org,clemensh@chromium.org,v8-reviews@googlegroups.com,wasm-v8@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: Ib353ee0a944316da6f919bac3bb88d4f95d98ea0
Reviewed-on: https://chromium-review.googlesource.com/488365
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44935}
And fix RoundUpToPowerOfTwo32 to return 1 for the input 0.
0 is no power of two.
Beside being the correct value, this also avoids a special case in the
(new) fast path using the number of leading zeros.
R=jochen@chromium.org, ahaas@chromium.org
Change-Id: I87173495e13b334954bcebbb55724fb666dfa809
Reviewed-on: https://chromium-review.googlesource.com/488143
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44925}
This fixes the bounds checking of "unsigned" numeric literals (those
that do not contains dots) by the parser. In particular this fixes a
bogus truncation to 32-bit in the scanner. It also makes the scanner
more robust by limiting the range of those numeric literals, hence
completely avoiding rounding loss or truncation errors.
R=clemensh@chromium.org
TEST=unittests/AsmJsScannerTest.UnsignedNumbers
BUG=v8:6298
Change-Id: Id31ab3c652e99fa8d3d6663315768e1bfaf3b773
Reviewed-on: https://chromium-review.googlesource.com/486881
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44890}
The only users of the LoadStoreOpcodeOf function were a number of
macros in wasm-macro-gen.h, and three test functions using it directly.
This CL refactors those functions to also use the macros.
In one case, this requires storing the value in a local variable first.
R=ahaas@chromium.org
Change-Id: Ia2fbf67a3831fafc9345e155eb240cf1bf6feb5d
Reviewed-on: https://chromium-review.googlesource.com/486842
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44885}
This header file is only used from tests.
Also, move the LoadStoreOpcodeOf method (only used in tests) from
wasm-opcodes.h to wasm-macro-gen.h.
R=ahaas@chromium.org
Change-Id: I8d4691be494b5c1fbe3084441329850930bad647
Reviewed-on: https://chromium-review.googlesource.com/486861
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44845}
wasm-macro-gen.h is mainly used from tests, but LocalDeclEncoder is
also used from various other places.
This CL moves the LocalDeclEncoder to an own compilation unit. We want
to later move wasm-macro-gen.h to the tests folder.
It also refactors the LocalDeclEncoder to reuse the
LEBHelper::write_u32v and LEBHelper::sizeof_u32v methods instead of
reimplementing it.
R=ahaas@chromium.org
Change-Id: Ia4651436f0544578da7c1c43596d343571942e97
Reviewed-on: https://chromium-review.googlesource.com/486724
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44838}
Instead of dynamically tracking the block nesting, precompute the
information statically.
The interpreter was already using a side table to store the pc diff for
each break, conditional break and others. The information needed to
adjust the stack was tracked dynamically, however. This CL also
precomputes this information, as it is statically known.
Instead of just storing the pc diff in the side table, we now store the
pc diff, the stack height diff and the arity of the target block.
Local measurements show speedups of 5-6% on average, sometimes >10%.
R=ahaas@chromium.org
BUG=v8:5822
Change-Id: I986cfa989aabe1488f2ff79ddbfbb28aeffe1452
Reviewed-on: https://chromium-review.googlesource.com/485482
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44837}
VC++ 2017's STL doesn't suppress warnings as aggressively as prior
versions did. This causes warnings on code which mixes signed and
unsigned types. In this case a deque of unsigned integers was being
queried to see how many signed integers it contains. This could be
fixed by passing in unsigned 0, 1, and 2 to std::count but changing
the deque from unsigned to int is simpler.
R=adamk@chromium.org
BUG=chromium:683729
Review-Url: https://codereview.chromium.org/2834293002
Cr-Commit-Position: refs/heads/master@{#44814}
- Split out code for Intl objects into src/objects/
- Rename i18n to intl (except for the name of the build flag)
- Use build system more broadly to turn on/off Intl code
- Delete a little bit of dead code
Bug: v8:5751
Change-Id: I41bf2825a5cb0df20824922b17c24cae637984da
Reviewed-on: https://chromium-review.googlesource.com/481284
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44801}
Add missing kEnd opcode after each body. Also, avoid the macro.
This fix is needed for follow-up changes to the control transfer
computation.
R=ahaas@chromium.org
BUG=v8:5822
Change-Id: If2b4dbea831ec40939a2045701f3d13479331773
Reviewed-on: https://chromium-review.googlesource.com/485481
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44794}
There's no reason to keep track, for a preparsed function itself,
whether that function calls eval. All that matters is that the ancestor
scopes are marked as having an inner scope which calls eval. The function
will have its "calls eval" bit persisted if/when it's fully parsed.
The only "behavioral" change in this patch is the removal of a DCHECK.
Bug: v8:6092
Change-Id: I17e396c8a265030fe0ad941707e4a97972e6650b
Reviewed-on: https://chromium-review.googlesource.com/481223
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44732}
This switches the parser to use token positions (i.e. {Position})
instead of stream positions (i.e. {GetPosition}) everywhere. Access to
the latter is being removed as it is unsupported when the scanner is in
rewind state anyways. This prevents "skipping" a token when seeking.
R=bradnelson@chromium.org
BUG=v8:6127
Change-Id: I9c13dd20a981061a2bccc4fb57e5c57d2a64ac5c
Reviewed-on: https://chromium-review.googlesource.com/480300
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44699}
When the incoming value to ChangeFloat64ToTagged is in Smi range, we
represent it as Smi instead of a HeapNumber. This addresses a range of
problems where TurboFan unnecessarily deoptimizes because an operation
learned Smi feedback in Ignition, but was then confronted with a tagged
HeapNumber in TurboFan, just because the value was also represented as
unboxed double somewhere in the meantime.
BUG=v8:6256
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2815283002
Cr-Commit-Position: refs/heads/master@{#44631}
The BytecodePipeline is no longer used by any optimizers, so remove it and
connect the BytecodeArrayBuilder directly to the BytecodeWriter.
Also remove some functions from BytecodeNode which are no longer used.
BUG=v8:6194
Change-Id: Id2ec94ff1d4db41b108a778100459283fbb2256c
Reviewed-on: https://chromium-review.googlesource.com/471528
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44619}
Adds a collection of call bytecodes which have an implicit undefined
receiver argument, for cases such as global calls where we know that the
receiver has to be undefined. This way we can skip an LdaUndefined,
decrease bytecode register pressure, and set a more accurate
ConvertReceiverMode on the interpreter and TurboFan call.
As a side effect, the "normal" Call bytecode now becomes a rare case
(only with calls and super property calls), so we get rid of its 0-2
argument special cases and modify CallProperty[N] to use the
NotNullOrUndefined ConvertReceiverMode.
Reland of https://chromium-review.googlesource.com/c/463287 after fixing
tests in https://codereview.chromium.org/2813873002.
Change-Id: I314d69c7643ceec6a5750ffdab60dad38dad09e5
Reviewed-on: https://chromium-review.googlesource.com/474752
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44582}
This a step towards using CompilerDispatcher in parallel
parsing.
BUG=v8:6093
Change-Id: I7c0dc0a5f5b25652a8aa98c94b1e069c1f081a5b
Reviewed-on: https://chromium-review.googlesource.com/473106
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Wiktor Garbacz <wiktorg@google.com>
Cr-Commit-Position: refs/heads/master@{#44570}
Move dead bytecode elimination from a seperate bytecode pipeline optimizer
into the BytecodeArrayWriter. This removes the last bytecode pipeline
optimizer, which means we can remove the Bytecode pipeline which,
which should increase compile speed.
BUG=v8:6194
Change-Id: I47fb3c3463b2b8a92e02cf7a6b608683fcfa5261
Reviewed-on: https://chromium-review.googlesource.com/471407
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44568}
All the optimizations have now been moved to either the BytecodeGenerator
or the BytecodeArrayWriter/Builder.
BUG=v8:6194
Change-Id: Ie5c5d55e824c94ffb503af376c72bc64ad1f6f81
Reviewed-on: https://chromium-review.googlesource.com/469349
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44564}
Moves the logic for eliding non-effectful accumulator load elision from the
peephole optimizer to the BytecodeArrayWriter.
BUG=v8:6194
Change-Id: I05fbe4ee8ac340e5c355285d0b47e4a9d52fd0a8
Reviewed-on: https://chromium-review.googlesource.com/469828
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44560}
According to the spec, section names must be valid UTF-8. This CL adds
a check for that.
Imported and exported names were already checked before.
In order to use the {consume_string} function from the
WasmSectionIterator, it moved it out of the ModuleDecoder into the
anonymous namespace. It now also gets a name for the string to be
parsed, for better error messages.
R=rossberg@chromium.org
Change-Id: I20b1ddb0bd1c7ada237d8303951073310fe1c714
Reviewed-on: https://chromium-review.googlesource.com/470207
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44550}
This reverts commit 751e893591.
Reason for revert: Breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/14885
See:
https://github.com/v8/v8/wiki/Blink-layout-tests
Original change's description:
> [ignition] Add call bytecodes for undefined receiver
>
> Adds a collection of call bytecodes which have an implicit undefined
> receiver argument, for cases such as global calls where we know that the
> receiver has to be undefined. This way we can skip an LdaUndefined,
> decrease bytecode register pressure, and set a more accurate
> ConvertReceiverMode on the interpreter and TurboFan call.
>
> As a side effect, the "normal" Call bytecode now becomes a rare case
> (only with calls and super property calls), so we get rid of its 0-2
> argument special cases and modify CallProperty[N] to use the
> NotNullOrUndefined ConvertReceiverMode.
>
> Change-Id: I9374a32fefd66fc0251b5193bae7a6b7dc31eefc
> Reviewed-on: https://chromium-review.googlesource.com/463287
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#44530}
TBR=rmcilroy@chromium.org,mstarzinger@chromium.org,leszeks@chromium.org,v8-reviews@googlegroups.com,v8-mips-ports@googlegroups.com,v8-ppc-ports@googlegroups.com,v8-x87-ports@googlegroups.com,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: I7629dec609d0ec938ce7105d6c1c74884e5f9272
Reviewed-on: https://chromium-review.googlesource.com/474744
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44548}
Adds a collection of call bytecodes which have an implicit undefined
receiver argument, for cases such as global calls where we know that the
receiver has to be undefined. This way we can skip an LdaUndefined,
decrease bytecode register pressure, and set a more accurate
ConvertReceiverMode on the interpreter and TurboFan call.
As a side effect, the "normal" Call bytecode now becomes a rare case
(only with calls and super property calls), so we get rid of its 0-2
argument special cases and modify CallProperty[N] to use the
NotNullOrUndefined ConvertReceiverMode.
Change-Id: I9374a32fefd66fc0251b5193bae7a6b7dc31eefc
Reviewed-on: https://chromium-review.googlesource.com/463287
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44530}
The decoder has the assumption that it always holds that pc <= end.
However, in the FunctionBodyDecoder, end was set to start to terminate
the decoding loop. Thereby the assumption was violated, which caused a
crash. I set end to pc now to end the decoding loop, which preserves
the assumption and terminates the loop.
BUG=chromium:709741
TEST=unittests/FunctionBodyDecoderTest.Regression709741
R=clemensh@chromium.org
Change-Id: I5bfd61bdc4809fc16f12ca8611876c66a79aaa36
Reviewed-on: https://chromium-review.googlesource.com/472723
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44524}
- Store std::string instead of std::unique_ptr<char[]> for the error
message.
- Remove ErrorCode, which was just kSuccess and kError anyway. Error is
now detected on whether error_msg_ is empty or not.
- Refactor constructors for perfect forwarding; this will allow us to
implement Result<std::unique_ptr<X*>>.
- Refactor Decoder::toResult for perfect forwarding.
- Remove output operators (operator<<) for Result; it was only used in
the error case anyway. Print error message directly instead.
The operator was problematic since it assumed the existence of an
output operator for every T which is used in Result<T>.
- Remove ModuleError and FunctionError, introduce general static
Result<T>::Error method instead.
R=ahaas@chromium.org
Change-Id: I1e0f602a61ee9780fee2a3ed33147d431fb092ba
Reviewed-on: https://chromium-review.googlesource.com/472748
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44518}
This relands commit d3e9aade0f. The original CL was reverted speculatively but didn't cause the buildbot failure.
Original change's description:
> [Interpreter] Move BinaryOp Smi transformation into BytecodeGenerator.
>
> Perform the transformation to <BinaryOp>Smi for Binary ops which take Smi
> literals in the BytecodeGenerator. This enables us to perform the
> transformation for literals on either side for commutative operations, and
> Avoids having to do the check on every bytecode in the peephole optimizer.
>
> In the process, adds Smi bytecode variants for all binary operations, adding
> - MulSmi
> - DivSmi
> - ModSmi
> - BitwiseXorSmi
> - ShiftRightLogical
>
> BUG=v8:6194
>
> Change-Id: If1484252f5385c16957004b9cac8bfbb1f209219
> Reviewed-on: https://chromium-review.googlesource.com/466246
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#44477}
TBR=rmcilroy@chromium.org,machenbach@chromium.org,yangguo@chromium.org,mstarzinger@chromium.org,mythria@chromium.org,v8-reviews@googlegroups.com,ishell@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
BUG=v8:6194
Change-Id: I2ccaefa1ce58d3885f5c2648755985c06f25c1d8
Reviewed-on: https://chromium-review.googlesource.com/472746
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44511}
Instead of storing {start} and {error_pc} we now store the
{error_offset}, which is anyways the only value we use.
R=clemensh@chromium.org
Change-Id: Ifd9791eff5c9efce2e7e2a1989bf3b5eaa464a02
Reviewed-on: https://chromium-review.googlesource.com/471527
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44510}
This is inital work in order to utilize CompilerDispatcher in parallel
parsing.
BUG=v8:6093
Change-Id: I6aae4f32ddb2314585d09039c1c5d7e658dc896f
Reviewed-on: https://chromium-review.googlesource.com/469709
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Wiktor Garbacz <wiktorg@google.com>
Cr-Commit-Position: refs/heads/master@{#44509}
and out of the main library. This saves about 5% of binary size
(800KB on x64, 373KB on android_arm).
Only the GN build is supported; the GYP build is maintained working
but does not support the feature.
Previously landed as 4782bc0df8 / r44412.
BUG=v8:6055
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_nosnap_rel;
Review-Url: https://codereview.chromium.org/2760233005
Cr-Commit-Position: refs/heads/master@{#44489}
This reverts commit d3e9aade0f.
Reason for revert: Speculative for:
https://build.chromium.org/p/client.v8.ports/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug/builds/4449
Bisect points to this CL.
Original change's description:
> [Interpreter] Move BinaryOp Smi transformation into BytecodeGenerator.
>
> Perform the transformation to <BinaryOp>Smi for Binary ops which take Smi
> literals in the BytecodeGenerator. This enables us to perform the
> transformation for literals on either side for commutative operations, and
> Avoids having to do the check on every bytecode in the peephole optimizer.
>
> In the process, adds Smi bytecode variants for all binary operations, adding
> - MulSmi
> - DivSmi
> - ModSmi
> - BitwiseXorSmi
> - ShiftRightLogical
>
> BUG=v8:6194
>
> Change-Id: If1484252f5385c16957004b9cac8bfbb1f209219
> Reviewed-on: https://chromium-review.googlesource.com/466246
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#44477}
TBR=rmcilroy@chromium.org,yangguo@chromium.org,mstarzinger@chromium.org,mythria@chromium.org,ishell@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:6194
Change-Id: If57dbdbe40be77804bf437463b855d3167e2d473
Reviewed-on: https://chromium-review.googlesource.com/471308
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44488}
Rather than doing nop elision in the peephole optimizer, be smarter about
emitting nops for elided register transfers in the bytecode optimizer.
BUG=v8:6194
Change-Id: Ib1a7168a0d143e4f2da7c6d43080998793c30822
Reviewed-on: https://chromium-review.googlesource.com/468929
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44479}
Perform the transformation to <BinaryOp>Smi for Binary ops which take Smi
literals in the BytecodeGenerator. This enables us to perform the
transformation for literals on either side for commutative operations, and
Avoids having to do the check on every bytecode in the peephole optimizer.
In the process, adds Smi bytecode variants for all binary operations, adding
- MulSmi
- DivSmi
- ModSmi
- BitwiseXorSmi
- ShiftRightLogical
BUG=v8:6194
Change-Id: If1484252f5385c16957004b9cac8bfbb1f209219
Reviewed-on: https://chromium-review.googlesource.com/466246
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44477}
This gives us more precise type information, so we can avoid some type
guards to refine the type information back.
The motivation for this is to help escape analysis by not introducing
redundant type guards (which escape analysis cannot handle yet even
though it could and should do).
Motivating example:
In the example below, the out-of-object property array for properties
fld5 and fld6 gets type Any when it is created by "o.fld5 = 5" (for
object literals, we store 4 properties in-objeca, the rest goes out
of object).
When we run load elimination for the load the out-of-object property
array (to store 6 into o.fld6), load elimination inserts TypeGuard to
enforce the Type::Internal() type. This makes escape analysis bail out
on this object, and we do not eliminate the object creation.
function f() {
var o = {};
o.fld1 = 1;
o.fld2 = 2;
o.fld3 = 3;
o.fld4 = 4;
o.fld5 = 5;
o.fld6 = 6;
}
f();
f();
%OptimizeFunctionOnNextCall(f);
f();
Review-Url: https://codereview.chromium.org/2797993006
Cr-Commit-Position: refs/heads/master@{#44470}
Make Ignition collect BinaryOperationFeedback on ToNumber, using the
shared type feedback slot with the following Inc/Dec bytecode, and use
this feedback in TurboFan to turn the ToNumber(x) operation into a
SpeculativeNumberMultiply(x,1) with the feedback hint.
R=jarin@chromium.org, mstarzinger@chromium.org, rmcilroy@chromium.org
BUG=v8:6214,v8:5267
Review-Url: https://codereview.chromium.org/2804813003
Cr-Commit-Position: refs/heads/master@{#44440}
Moves the ToName elision out of the peephole optimizer and into the
BytecodeGenerator.
BUG=v8:6194
Change-Id: Ic355adbe21f967dc5d52babdd37100a260c62c26
Reviewed-on: https://chromium-review.googlesource.com/467466
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44427}
Reason for revert:
I think that this CL breaks chromium compilation on windows with clang (). All other CLs in the list looks trivial and don't change test/unittest/BUILD.gn.
[42456/47924] CXX obj/v8/test/unittests/unittests/value-serializer-unittest.obj
[42457/47924] LINK unittests.exe unittests.exe.pdb
FAILED: unittests.exe unittests.exe.pdb
E:/b/depot_tools/python276_bin/python.exe ../../build/toolchain/win/tool_wrapper.py link-wrapper environment.x64 False link.exe /nologo /OUT:./unittests.exe /PDB:./unittests.exe.pdb @./unittests.exe.rsp
bitmap-unittest.obj : error LNK2019: unresolved external symbol "public: void __cdecl v8::internal::List<class v8::internal::AllocationObserver *,class v8::internal::FreeStoreAllocationPolicy>::Add(class v8::internal::AllocationObserver * const &,class v8::internal::FreeStoreAllocationPolicy)" (?Add@?$List@PEAVAllocationObserver@internal@v8@@VFreeStoreAllocationPolicy@23@@internal@v8@@QEAAXAEBQEAVAllocationObserver@23@VFreeStoreAllocationPolicy@23@@Z) referenced in function "public: virtual void __cdecl v8::internal::Space::AddAllocationObserver(class v8::internal::AllocationObserver *)" (?AddAllocationObserver@Space@internal@v8@@UEAAXPEAVAllocationObserver@23@@Z)
slot-set-unittest.obj : error LNK2001: unresolved external symbol "public: void __cdecl v8::internal::List<class v8::internal::AllocationObserver *,class v8::internal::FreeStoreAllocationPolicy>::Add(class v8::internal::AllocationObserver * const &,class v8::internal::FreeStoreAllocationPolicy)" (?Add@?$List@PEAVAllocationObserver@internal@v8@@VFreeStoreAllocationPolicy@23@@internal@v8@@QEAAXAEBQEAVAllocationObserver@23@VFreeStoreAllocationPolicy@23@@Z)
bitmap-unittest.obj : error LNK2019: unresolved external symbol "public: bool __cdecl v8::internal::List<class v8::internal::AllocationObserver *,class v8::internal::FreeStoreAllocationPolicy>::RemoveElement(class v8::internal::AllocationObserver * const &)" (?RemoveElement@?$List@PEAVAllocationObserver@internal@v8@@VFreeStoreAllocationPolicy@23@@internal@v8@@QEAA_NAEBQEAVAllocationObserver@23@@Z) referenced in function "public: virtual void __cdecl v8::internal::Space::RemoveAllocationObserver(class v8::internal::AllocationObserver *)" (?RemoveAllocationObserver@Space@internal@v8@@UEAAXPEAVAllocationObserver@23@@Z)
slot-set-unittest.obj : error LNK2001: unresolved external symbol "public: bool __cdecl v8::internal::List<class v8::internal::AllocationObserver *,class v8::internal::FreeStoreAllocationPolicy>::RemoveElement(class v8::internal::AllocationObserver * const &)" (?RemoveElement@?$List@PEAVAllocationObserver@internal@v8@@VFreeStoreAllocationPolicy@23@@internal@v8@@QEAA_NAEBQEAVAllocationObserver@23@@Z)
./unittests.exe : fatal error LNK1120: 2 unresolved externals
Original issue's description:
> [snapshot] Move builtins generation into mksnapshot
>
> and out of the main library. This saves about 5% of binary size
> (800KB on x64, 373KB on android_arm).
>
> Only the GN build is supported; the GYP build is maintained working
> but does not support the feature.
>
> BUG=v8:6055
> CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_nosnap_rel;
>
> Review-Url: https://codereview.chromium.org/2760233005
> Cr-Commit-Position: refs/heads/master@{#44412}
> Committed: 4782bc0df8TBR=jgruber@chromium.org,rmcilroy@chromium.org,machenbach@chromium.org,jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:6055
Review-Url: https://codereview.chromium.org/2803903002
Cr-Commit-Position: refs/heads/master@{#44422}
Move the ToBoolean elision in the BytecodeGenerator instead of the
peephole optimizer. Adds a TypeHint mechanism to the ExpressionResult
to enable passing of type hints through the ast visitor.
BUG=v8:6194
Change-Id: Ic55506ba11b213f7459250004d3f18cab04ee9b3
Reviewed-on: https://chromium-review.googlesource.com/467208
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44415}
and out of the main library. This saves about 5% of binary size
(800KB on x64, 373KB on android_arm).
Only the GN build is supported; the GYP build is maintained working
but does not support the feature.
BUG=v8:6055
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_nosnap_rel;
Review-Url: https://codereview.chromium.org/2760233005
Cr-Commit-Position: refs/heads/master@{#44412}
In the C++ wasm interpreter, we decode LEB encoded immediates each time
we execute the respective instruction. The whole instruction sequence
was validated before, thus we know that all integers are valid.
This CL refactors several Decoder methods to allow for either checked
or unchecked decoding. In the checked case, an error is set if a check
fails, in the unchecked case, a DCHECK will fail.
This improves performance of the interpreter by 20.5%.
R=ahaas@chromium.org
BUG=v8:5822
Change-Id: If69efd4f6fbe19d84bfc2f4aa000f429a8e22bf5
Reviewed-on: https://chromium-review.googlesource.com/468786
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44406}
Both methods decoded a LEB128 encoded integer, but only consume_leb
incremented the pc pointer accordingly.
This CL implements consume_leb by using checked_read_leb.
It also refactors a few things:
1) It removes error_pt, which was only avaible in checked_read_leb.
2) It renames the error method to errorf, since it receives a format
string. This also avoids a name clash.
3) It implements sign extension directly in checked_read_leb instead of
doing this in the caller.
R=ahaas@chromium.org
BUG=v8:5822
Change-Id: I8058f57418493861e5df26d4949041f6766d5138
Reviewed-on: https://chromium-review.googlesource.com/467150
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44405}
Translates code of the form 'if (x === undefined)' into the JumpIfUndefined
bytecode, and similarly for comparisons with null. Also adds bytecodes for
JumpIfNotUndefined / Null.
Moves the peephole optimization for CompareUndefined out of the peephole
optimizer and into the BytecodeGenerator, having the side-effect of enabling
it for comparisons with undefined on both side of the compare operation.
BUG=v8:6107
Review-Url: https://codereview.chromium.org/2793923002
Cr-Commit-Position: refs/heads/master@{#44341}
The parameter indices are shifted by 1 in BytecodeArrayBuilder
because the receiver is variable at index 0 and not -1.
Split BytecodeArrayBuilder::Parameter(index) method into
Receiver() (same as Parameter(-1)) and
Parameter(index).
This way we avoid confusing (index+1) counting in BytecodeGenerator().
BUG=
Change-Id: Id87ec7c708cecfc3108011994f3177f483772bcc
Reviewed-on: https://chromium-review.googlesource.com/461904
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44262}
- Introduce new struct AsyncGeneratorRequest, which holds
information pertinent to resuming execution of an
AsyncGenerator, such as the Promise associated with the async
generator request. It is intended to be used as a singly
linked list, and holds a pointer to the next item in te queue.
- Introduce JSAsyncGeneratorObject (subclass of
JSGeneratorObject), which includes several new internal fields
(`queue` which contains a singly linked list of
AsyncGeneratorRequest objects, and `await_input` which
contains the sent value from an Await expression (This is
necessary to prevent function.sent (used by yield*) from
having the sent value observably overwritten during
execution).
- Modify SuspendGenerator to accept a set of Flags, which
indicate whether the suspend is for a Yield or Await, and
whether it takes place on an async generator or ES6
generator.
- Introduce interpreter intrinsics and TF intrinsic lowering for
accessing the await input of an async generator
- Modify the JSGeneratorStore operator to understand whether or
not it's suspending for a normal yield, or an AsyncGenerator
Await. This ensures appropriate registers are stored.
- Add versions of ResumeGeneratorTrampoline which store the
input value in a different field depending on wether it's an
AsyncGenerator Await resume, or an ordinary resume. Also modifies
whether debug code will assert that the generator object is a
JSGeneratorObject or a JSAsyncGeneratorObject depending on the
resume type.
BUG=v8:5855
R=bmeurer@chromium.org, rmcilroy@chromium.org, jgruber@chromium.org,
littledan@chromium.org, neis@chromium.orgTBR=marja@chromium.org
Change-Id: I9d58df1d344465fc937fe7eed322424204497187
Reviewed-on: https://chromium-review.googlesource.com/446961
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44240}
