Adds support for following operators
-Logical and
-Logical or
-Comma
Adds the above bytecodes, support to BytecodeGenerator and BytecodeArrayBuilder
to enable it's use, it's implementation and tests.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1399773002
Cr-Commit-Position: refs/heads/master@{#31281}
https://codereview.chromium.org/1343113003 introduced a separate InternalPackedArray constructor to the extras utils object, distinct from the one used by natives. However, it omitted the code to set up the methods for that InternalPackedArray. This makes all the basic manipulation methods available.
BUG=v8:4276
LOG=Y
R=jochen@chromium.org,yangguo@chromium.org
Review URL: https://codereview.chromium.org/1401243003
Cr-Commit-Position: refs/heads/master@{#31272}
The AccessorsTable has a non-deterministic iteration order depending on the
random seed. This means that the order of the accessor defines could vary
and the test which tried to set accessors on two different properties
could flakly fail due to the order not being as expected. To fix this I make
the test only do a setter on one property (the test-interpreter.cc test
does the check on multiple property accessors
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1404793002
Cr-Commit-Position: refs/heads/master@{#31264}
Replaces the use of KeyedStoreICGeneric with a vector based KeyedStoreIC for
array literal computed stores now that there is a feedback vector slot for
these expressions. Removes KeyedStoreICGeneric bytecode since this is no
longer necessary.
BUG=v8:4280
LOG=N
TBR=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1400353002
Cr-Commit-Position: refs/heads/master@{#31262}
Adds Object literal support to the interpreter. Adds the following bytecodes:
- ToName
- CreateObjectLiteral.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1386313005
Cr-Commit-Position: refs/heads/master@{#31253}
Adds array literal support to the interpreter. Currently constructed
array elements don't have type feedback slots, so also adds support for
generic keyed store operations.
Adds the following bytecodes:
- CreateArrayLiteral
- KeyedStoreICGeneric
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1400753003
Cr-Commit-Position: refs/heads/master@{#31240}
Adds support for creation of new local function contexts (or script context for
top-level code). As part of this, also adds support for context push/pop
operations using a ContextScope object in BytecodeGenerator. Adds the following
bytecodes:
- PushContext
- PopContext
Support for inner contexts and loading from / storing to context allocated
variables will come in a future CL.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1379793004
Cr-Commit-Position: refs/heads/master@{#31238}
- Fairly (round-robin) divide available memory upon compaction tasks.
- Ensure an upper limit (of memory) since dividing is O(n) for n free-space
nodes.
- Refill from free lists managed by sweeper once a compaction space becomes
empty.
Assumption for dividing memory: Memory in the free lists is sparse upon starting
compaction (which means that only few nodes are available), except for memory
reducer GCs, which happen in idle time though (so it's less of a problem).
BUG=chromium:524425
LOG=N
Review URL: https://codereview.chromium.org/1382003002
Cr-Commit-Position: refs/heads/master@{#31234}
Adds function literal support and add support for OTHER_CALLS which can be
made when calling a function literal.
Adds the CreateClosure bytecode.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1396693003
Cr-Commit-Position: refs/heads/master@{#31231}
-Bitwise Or
-Bitwise Xor
-Bitwise And
Adds the above bytecodes, support to BytecodeGenerator and BytecodeArrayBuilder to enable it's use, it's implementation and tests.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1386133002
Cr-Commit-Position: refs/heads/master@{#31210}
Adds support for following operators
-Shift left
-Shift right
-Shift right logical
Adds the above bytecodes, support to BytecodeGenerator and BytecodeArrayBuilder
to enable it's use, it's implementation and tests.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1392913002
Cr-Commit-Position: refs/heads/master@{#31205}
Not all register codes are safe for use on all architectures.
Using RegisterConfiguration when picking a calling convention
in test-multiple-return.
BUG=None
TEST=test-multiple-return
R=titzer@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1401453002
Cr-Commit-Position: refs/heads/master@{#31188}
Without that, it has a few false positives about out-of-bounds array accesses.
Also makes the clang static-analyzer happy.
Original code review from Sven Panne:
https://codereview.chromium.org/790723002/
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_arm_dbg,v8_linux_arm64_dbg,v8_mac64_dbg,v8_win_compile_dbg,v8_linux_gcc_rel
Review URL: https://codereview.chromium.org/1393023003
Cr-Commit-Position: refs/heads/master@{#31185}
This will allow exploration of possibilities like passing around buffer base and length.
BUG=None
TEST=test-multiple-return
LOG=N
R=mtrofin@chromium.org,titzer@chromium.org
Review URL: https://codereview.chromium.org/1391333003
Cr-Commit-Position: refs/heads/master@{#31184}
This fixes several warnings when cross-building using GCC (since r31087,
5cf1c0b).
In particular, CPURegister::code() now returns 'int', matching the other
platforms (and the coding style guide). The rest of the patch consists
of similar changes to make this work.
BUG=
Review URL: https://codereview.chromium.org/1393043003
Cr-Commit-Position: refs/heads/master@{#31176}
Reason for revert:
Breaks Arm debug.
Original issue's description:
> Reland: Introduce a V8_NORETURN macro and use it to make GCC 4.9.2 happy again.
>
> Without that, it has a few false positives about out-of-bounds array accesses.
> Also makes the clang static-analyzer happy.
>
> Original code review from Sven Panne:
> https://codereview.chromium.org/790723002/
>
> CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_arm_dbg,v8_linux_arm64_dbg,v8_mac64_dbg,v8_win_compile_dbg
>
> Committed: https://crrev.com/93ae81101af68d81b7af84ea4046ea849e605116
> Cr-Commit-Position: refs/heads/master@{#31163}
TBR=jochen@chromium.org,karl@skomski.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1398643002
Cr-Commit-Position: refs/heads/master@{#31167}
Implements support for declaring global variables. Also adds support for loading
from and storing to both global and unallocated global variables. Adds the
following bytecodes:
- StoreGlobal
- LoadContextSlot
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1378523005
Cr-Commit-Position: refs/heads/master@{#31166}
Without that, it has a few false positives about out-of-bounds array accesses.
Also makes the clang static-analyzer happy.
Original code review from Sven Panne:
https://codereview.chromium.org/790723002/
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_arm_dbg,v8_linux_arm64_dbg,v8_mac64_dbg,v8_win_compile_dbg
Review URL: https://codereview.chromium.org/1383053005
Cr-Commit-Position: refs/heads/master@{#31163}
Previously, arrow function scopes had a separate ScopeType. However,
Scope::DeserializeScopeChain() erroneously deserialized ARROW_SCOPE
ScopeInfos as FUNCTION_SCOPE. This could lead to bugs such as the
attached one, where "super" was disallowed where it should have
been allowed.
This patch utilizes the Scope's FunctionKind to distinguish arrow
functions from others. Besides fixing the above bug, this also
simplifies code in various places that had to deal with two different
ScopeTypes both of which meant "function".
BUG=v8:4466
LOG=n
Review URL: https://codereview.chromium.org/1386253002
Cr-Commit-Position: refs/heads/master@{#31154}
Allow access to Array Iterator through the API, in order to simplify
setting up interfaces which use these methods. This applies to
WebIDL interfaces with "length" attributes returning integer types and
a getter taking an unsigned long type.
BUG=
LOG=N
R=adamk@chromium.org
Review URL: https://codereview.chromium.org/1378403004
Cr-Commit-Position: refs/heads/master@{#31152}
Untangles committed memory from capacity in a given space and unifies accounting
for all spaces.
Pre-work for parallel compaction.
R=hpayer@chromium.org
BUG=chromium:524425
LOG=N
Review URL: https://codereview.chromium.org/1388383002
Cr-Commit-Position: refs/heads/master@{#31149}
Introduce a new JSGlobalSpecialization advanced reducer that runs
during the initial inlining and context specialization, and specializes
the graph to the globals of the native context. Currently we assume
that we do not inline cross native context, but long-term we will grab
the global object from the JSLoadGlobal/JSStoreGlobal feedback (with the
new global load/store ICs that are currently in the workings), and then
this whole specialization will be fully compositional even across
cross-context inlining.
Note that we cannot really handle most of the stores to global object
property cells because TurboFan doesn't have a mechanism to enforce
certain representations. Also note that we cannot yet fully benefit
from the type feedback collected on the global object property cells,
because the type system cannot deal with maps in a reasonable way.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_rel
R=jarin@chromium.org
BUG=v8:4470
LOG=n
Committed: https://crrev.com/6fbf7903f94924ea066af481719898bd9667b6eb
Cr-Commit-Position: refs/heads/master@{#31139}
Review URL: https://codereview.chromium.org/1387393002
Cr-Commit-Position: refs/heads/master@{#31148}
Reason for revert:
Breaks GC stress: http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/1984/steps/Bisect%20c5528ac1.Retry/logs/regress-crbug-450960
Original issue's description:
> [turbofan] Add initial support for global specialization.
>
> Introduce a new JSGlobalSpecialization advanced reducer that runs
> during the initial inlining and context specialization, and specializes
> the graph to the globals of the native context. Currently we assume
> that we do not inline cross native context, but long-term we will grab
> the global object from the JSLoadGlobal/JSStoreGlobal feedback (with the
> new global load/store ICs that are currently in the workings), and then
> this whole specialization will be fully compositional even across
> cross-context inlining.
>
> Note that we cannot really handle most of the stores to global object
> property cells because TurboFan doesn't have a mechanism to enforce
> certain representations. Also note that we cannot yet fully benefit
> from the type feedback collected on the global object property cells,
> because the type system cannot deal with maps in a reasonable way.
>
> CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_rel
> R=jarin@chromium.org
> BUG=v8:4470
> LOG=n
>
> Committed: https://crrev.com/6fbf7903f94924ea066af481719898bd9667b6eb
> Cr-Commit-Position: refs/heads/master@{#31139}
TBR=jarin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4470
Review URL: https://codereview.chromium.org/1390073004
Cr-Commit-Position: refs/heads/master@{#31144}
Thus TypeFeedbackMetadata can now be shared between different native contexts.
Review URL: https://codereview.chromium.org/1384673002
Cr-Commit-Position: refs/heads/master@{#31143}
Introduce a new JSGlobalSpecialization advanced reducer that runs
during the initial inlining and context specialization, and specializes
the graph to the globals of the native context. Currently we assume
that we do not inline cross native context, but long-term we will grab
the global object from the JSLoadGlobal/JSStoreGlobal feedback (with the
new global load/store ICs that are currently in the workings), and then
this whole specialization will be fully compositional even across
cross-context inlining.
Note that we cannot really handle most of the stores to global object
property cells because TurboFan doesn't have a mechanism to enforce
certain representations. Also note that we cannot yet fully benefit
from the type feedback collected on the global object property cells,
because the type system cannot deal with maps in a reasonable way.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_rel
R=jarin@chromium.org
BUG=v8:4470
LOG=n
Review URL: https://codereview.chromium.org/1387393002
Cr-Commit-Position: refs/heads/master@{#31139}
Adds support for strict mode load / store ICs and cleans up BinaryOp and
CompareOp to only trigger an UNIMPLEMENTED abort if called with STRONG
mode (which is the only language mode which has different compare/binary ops.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1385623002
Cr-Commit-Position: refs/heads/master@{#31134}
Symbols marked as "well-known" now return an undefined value when loaded with a failed access check, instead of throwing.
Currently, only @@isConcatSpreadable is marked as well-known, until the correct behaviour is properly specified.
BUG=v8:4289, 507553
LOG=N
R=adamk@chromium.org, jochen@chromium.org, verwaest@chromium.org
Review URL: https://codereview.chromium.org/1230793002
Cr-Commit-Position: refs/heads/master@{#31131}
Reason for revert:
[Sheriff] Speculative revert due to crbug.com/539814
Original issue's description:
> Changed scavenge GC to collect unmodified references
>
> Added a scavenge GC pass that collects unmodified references instead of
> processing object groups. This mode can be controlled by setting
> FLAG_scavenge_remove_unmodified_objects. By default this is turned off.
> Also, modified a test case to suit the handle the new GC pass.
>
> BUG=v8:4421
> LOG=N
>
> Committed: https://crrev.com/6254019238a853c9f3c09d615ba153043f6957c7
> Cr-Commit-Position: refs/heads/master@{#31102}
TBR=jochen@chromium.org,rmcilroy@chromium.org,mythria@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4421,chromium:539814
Review URL: https://codereview.chromium.org/1388133002
Cr-Commit-Position: refs/heads/master@{#31130}
Previously, cases like
var [foo]
led to a parser crash because the parser tried to do something with
the initializer, which was not syntactically present.
This patch fixes the parser issue (implicitly creating an undefined
initializer) and inserts a check for array destructuring that the
right-hand side is coercible to an object, so it can have iterator
methods called on it safely.
BUG=v8:4462
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1384413002
Cr-Commit-Position: refs/heads/master@{#31128}
Implementations and tests for typeof, void, and logical not.
Add missing string type to Object::TypeOf.
BUG=v8:4280
LOG=NO
Review URL: https://codereview.chromium.org/1390483002
Cr-Commit-Position: refs/heads/master@{#31124}
This patch prohibits lexical bindings from being called 'let', even in
sloppy mode, following the ES2015 specification. The change affects
multiple cases of lexical bindings, including simple let/const declarations
and both kinds of for loops. var and legacy const bindings still permit
the name to be let, including in destructuring cases. Tests are added to
verify, though some cases are commented out since they led to (pre-existing)
crashes.
BUG=v8:4403
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1371263003
Cr-Commit-Position: refs/heads/master@{#31115}
Port 5cf1c0bcf6
Original commit message:
Previous to this patch, both the lithium and TurboFan register
allocators tracked allocated registers by "indices", rather than
the register codes used elsewhere in the runtime. This patch
ensures that codes are used everywhere, and in the process cleans
up a bunch of redundant code and adds more structure to how the
set of allocatable registers is defined.
Some highlights of changes:
* TurboFan's RegisterConfiguration class moved to V8's top level
so that it can be shared with Crankshaft.
* Various "ToAllocationIndex" and related methods removed.
* Code that can be easily shared between Register classes on
different platforms is now shared.
* The list of allocatable registers on each platform is declared
as a list rather than implicitly via the register index <->
code mapping.
R=danno@chromium.org, bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=
Review URL: https://codereview.chromium.org/1381383002
Cr-Commit-Position: refs/heads/master@{#31114}
The --abort-on-uncaught-exception command line switch makes
Isolate::Throw abort if the error being thrown cannot be caught by a
try/catch block.
Embedders may want to use other mechanisms than try/catch blocks to
handle uncaught exceptions. For instance, Node.js has "domain" objects
that have error handlers that can handle uncaught exception like
following:
var d = domain.create();
d.on('error', function onError(err) {
console.log('Handling error');
});
d.run(function() {
throw new Error("boom");
});
These error handlers are called by isolates' message listeners.
If --abort-on-uncaught-exception is *not* used, the isolate's
message listener will be called, which will in turn call the domain's
error handler. The process will output 'Handling error' and will exit
successfully (not due to an uncaught exception). This is the behavior
that Node.js users expect.
However, if --abort-on-uncaught-exception is used and when throwing an
error within a domain that has an error handler, the process will abort
and the domain's error handler will not be called. This is not the
behavior that Node.js users expect.
Having a SetAbortOnUncaughtExceptionCallback API allows embedders to
determine when it's not appropriate to abort and instead handle the
exception via the isolate's message listener.
In the example above, Node.js would set a custom callback with
SetAbortOnUncaughtExceptionCallback that would be implemented as
following (the sample code has been simplified to remove what's not
relevant to this change):
bool ShouldAbortOnUncaughtException(Isolate* isolate) {
return !IsDomainActive();
}
Now when --abort-on-uncaught-exception is used, Isolate::Throw would
call that callback and determine that it should not abort if a domain
with an error handler is active. Instead, the isolate's message listener
would be called and the error would be handled by the domain's error
handler.
I believe this can also be useful for other embedders.
BUG=
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1375933003
Cr-Commit-Position: refs/heads/master@{#31111}
Without that, it has a few false positives about out-of-bounds array accesses.
Also makes the clang static-analyzer happy.
Original code review from Sven Panne:
https://codereview.chromium.org/790723002/
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_arm_dbg,v8_linux_arm64_dbg,v8_mac64_dbg,v8_win_compile_dbg
Review URL: https://codereview.chromium.org/1384873002
Cr-Commit-Position: refs/heads/master@{#31105}
Added a scavenge GC pass that collects unmodified references instead of
processing object groups. This mode can be controlled by setting
FLAG_scavenge_remove_unmodified_objects. By default this is turned off.
Also, modified a test case to suit the handle the new GC pass.
BUG=v8:4421
LOG=N
Review URL: https://codereview.chromium.org/1358703003
Cr-Commit-Position: refs/heads/master@{#31102}
Fixes:
../../test/cctest/compiler/test-js-typed-lowering.cc:224:14:
error: ‘kJSTypes’ defined but not used [-Werror=unused-variable]
static Type* kJSTypes[] = {Type::Undefined(), Type::Null(), Type::Boolean(),
../../src/bignum.cc: In member function
‘void v8::internal::Bignum::AssignDecimalString(Vector<const char>)’:
../../src/bignum.cc:80:6: error: assuming signed overflow does not occur when
assuming that (X + c) < X is always false [-Werror=strict-overflow]
../../src/compiler/ia32/code-generator-ia32.cc:1366:3:
required from here ../../src/base/logging.h:123:26:
error: comparison between signed and unsigned integer expressions
[-Werror=sign-compare] DEFINE_CHECK_OP_IMPL(EQ, ==)
BUG=
Review URL: https://codereview.chromium.org/1371823002
Cr-Commit-Position: refs/heads/master@{#31095}
Adds support for calling runtime functions from the interpreter. Adds the
CallRuntime bytecode which takes a Runtime::FunctionId of the function to call
and the arguments in sequential registers. Adds a InterpreterCEntry builtin
to enable the interpreter to enter C++ code based on the functionId.
Also renames Builtin::PushArgsAndCall to Builtin::InterpreterPushArgsAndCall
and groups all the interpreter builtins together.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1362383002
Cr-Commit-Position: refs/heads/master@{#31089}
Previous to this patch, both the lithium and TurboFan register
allocators tracked allocated registers by "indices", rather than
the register codes used elsewhere in the runtime. This patch
ensures that codes are used everywhere, and in the process cleans
up a bunch of redundant code and adds more structure to how the
set of allocatable registers is defined.
Some highlights of changes:
* TurboFan's RegisterConfiguration class moved to V8's top level
so that it can be shared with Crankshaft.
* Various "ToAllocationIndex" and related methods removed.
* Code that can be easily shared between Register classes on
different platforms is now shared.
* The list of allocatable registers on each platform is declared
as a list rather than implicitly via the register index <->
code mapping.
Committed: https://crrev.com/80bc6f6e11f79524e3f1ad05579583adfd5f18b2
Cr-Commit-Position: refs/heads/master@{#30913}
Committed: https://crrev.com/7b7a8205d9a00c678fb7a6e032a55fecbc1509cf
Cr-Commit-Position: refs/heads/master@{#31075}
Review URL: https://codereview.chromium.org/1287383003
Cr-Commit-Position: refs/heads/master@{#31087}
Reason for revert:
Prime suspect in breakage of V8 Linux -- no snap
Original issue's description:
> [swarming] Isolate v8 testing.
>
> Add gyp support and isolates for default test suites.
> Add two default isolates, one (default) for using the
> test suite collection we call "default" on the bots. One
> (developer_default) for also supporting the way developers
> call the driver (i.e. without argument, which includes
> the unittests).
>
> BUG=chromium:535160
> LOG=n
>
> Committed: https://crrev.com/9bd83f58f29ab0c7c5b71b00bcb1df3a9e641f05
> Cr-Commit-Position: refs/heads/master@{#31081}
TBR=tandrii@chromium.org,jochen@chromium.org,maruel@chromium.org,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:535160
Review URL: https://codereview.chromium.org/1370993008
Cr-Commit-Position: refs/heads/master@{#31084}
Reason for revert:
Failures on MIPS
Original issue's description:
> Remove register index/code indirection
>
> Previous to this patch, both the lithium and TurboFan register
> allocators tracked allocated registers by "indices", rather than
> the register codes used elsewhere in the runtime. This patch
> ensures that codes are used everywhere, and in the process cleans
> up a bunch of redundant code and adds more structure to how the
> set of allocatable registers is defined.
>
> Some highlights of changes:
>
> * TurboFan's RegisterConfiguration class moved to V8's top level
> so that it can be shared with Crankshaft.
> * Various "ToAllocationIndex" and related methods removed.
> * Code that can be easily shared between Register classes on
> different platforms is now shared.
> * The list of allocatable registers on each platform is declared
> as a list rather than implicitly via the register index <->
> code mapping.
>
> Committed: https://crrev.com/80bc6f6e11f79524e3f1ad05579583adfd5f18b2
> Cr-Commit-Position: refs/heads/master@{#30913}
>
> Committed: https://crrev.com/7b7a8205d9a00c678fb7a6e032a55fecbc1509cf
> Cr-Commit-Position: refs/heads/master@{#31075}
TBR=akos.palfi@imgtec.com,bmeurer@chromium.org,jarin@chromium.org,paul.lind@imgtec.com,titzer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1380863004
Cr-Commit-Position: refs/heads/master@{#31083}
Add gyp support and isolates for default test suites.
Add two default isolates, one (default) for using the
test suite collection we call "default" on the bots. One
(developer_default) for also supporting the way developers
call the driver (i.e. without argument, which includes
the unittests).
BUG=chromium:535160
LOG=n
Review URL: https://codereview.chromium.org/1380593002
Cr-Commit-Position: refs/heads/master@{#31081}
Reason for revert:
Now breaking arm32 debug bot (worked locally even with --debug-code, so I'll need to figure out what's different on the bot)
Original issue's description:
> [Interpreter] Add CallRuntime support to the interpreter.
>
> Adds support for calling runtime functions from the interpreter. Adds the
> CallRuntime bytecode which takes a Runtime::FunctionId of the function to call
> and the arguments in sequential registers. Adds a InterpreterCEntry builtin
> to enable the interpreter to enter C++ code based on the functionId.
>
> Also renames Builtin::PushArgsAndCall to Builtin::InterpreterPushArgsAndCall
> and groups all the interpreter builtins together.
>
> BUG=v8:4280
> LOG=N
>
TBR=bmeurer@chromium.org,oth@chromium.org,mstarzinger@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4280
Review URL: https://codereview.chromium.org/1379933003
Cr-Commit-Position: refs/heads/master@{#31078}
Adds support for calling runtime functions from the interpreter. Adds the
CallRuntime bytecode which takes a Runtime::FunctionId of the function to call
and the arguments in sequential registers. Adds a InterpreterCEntry builtin
to enable the interpreter to enter C++ code based on the functionId.
Also renames Builtin::PushArgsAndCall to Builtin::InterpreterPushArgsAndCall
and groups all the interpreter builtins together.
BUG=v8:4280
LOG=N
Committed: https://crrev.com/40e8424b744f8b6e3e1d93e20f23487419911dfc
Cr-Commit-Position: refs/heads/master@{#31064}
Review URL: https://codereview.chromium.org/1362383002
Cr-Commit-Position: refs/heads/master@{#31076}
Previous to this patch, both the lithium and TurboFan register
allocators tracked allocated registers by "indices", rather than
the register codes used elsewhere in the runtime. This patch
ensures that codes are used everywhere, and in the process cleans
up a bunch of redundant code and adds more structure to how the
set of allocatable registers is defined.
Some highlights of changes:
* TurboFan's RegisterConfiguration class moved to V8's top level
so that it can be shared with Crankshaft.
* Various "ToAllocationIndex" and related methods removed.
* Code that can be easily shared between Register classes on
different platforms is now shared.
* The list of allocatable registers on each platform is declared
as a list rather than implicitly via the register index <->
code mapping.
Committed: https://crrev.com/80bc6f6e11f79524e3f1ad05579583adfd5f18b2
Cr-Commit-Position: refs/heads/master@{#30913}
Review URL: https://codereview.chromium.org/1287383003
Cr-Commit-Position: refs/heads/master@{#31075}
Reason for revert:
Broke Arm64 bot (CEntry stub is trying to pop arguments off stack when argv_in_reg, so I need to fix this).
Original issue's description:
> [Interpreter] Add CallRuntime support to the interpreter.
>
> Adds support for calling runtime functions from the interpreter. Adds the
> CallRuntime bytecode which takes a Runtime::FunctionId of the function to call
> and the arguments in sequential registers. Adds a InterpreterCEntry builtin
> to enable the interpreter to enter C++ code based on the functionId.
>
> Also renames Builtin::PushArgsAndCall to Builtin::InterpreterPushArgsAndCall
> and groups all the interpreter builtins together.
>
> BUG=v8:4280
> LOG=N
>
> Committed: https://crrev.com/40e8424b744f8b6e3e1d93e20f23487419911dfc
> Cr-Commit-Position: refs/heads/master@{#31064}
TBR=bmeurer@chromium.org,oth@chromium.org,mstarzinger@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4280
Review URL: https://codereview.chromium.org/1387543002
Cr-Commit-Position: refs/heads/master@{#31066}
Adds support for calling runtime functions from the interpreter. Adds the
CallRuntime bytecode which takes a Runtime::FunctionId of the function to call
and the arguments in sequential registers. Adds a InterpreterCEntry builtin
to enable the interpreter to enter C++ code based on the functionId.
Also renames Builtin::PushArgsAndCall to Builtin::InterpreterPushArgsAndCall
and groups all the interpreter builtins together.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1362383002
Cr-Commit-Position: refs/heads/master@{#31064}
Swarming won't support an incremental data file. By just
sorting the lowest hanging fruits to the beginning we
already get a big bang for the buck (>80% of the improvement
we get otherwise).
This will require semi-regular manual updates of the
slowest tests.
BUG=chromium:535160
LOG=n
Review URL: https://codereview.chromium.org/1385443002
Cr-Commit-Position: refs/heads/master@{#31061}
Adds support for short operands, starting with kIdx16. Introduces
BytecodeTraits to enable compile time determination of various traits for a
bytecode, such as size, operands, etc. Reworks BytecodeIterator,
BytecodeArrayBuilder and Bytecodes::Decode to support 16 bit operands. Adds
support to Interpreter to load 16 bit operands.
Also fixes a bug with ToBoolean where it wouldn't get emitted at the start
of a block, and added a test.
BytecodeTraits template magic inspired by oth@chromium.org.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1370893002
Cr-Commit-Position: refs/heads/master@{#31058}
Introduce %_ToNumber intrinsic, which just calls to the existing
ToNumberStub, and remove all uses of our custom JavaScript plus
intrinsics based ToNumber and friends.
Also replace the TO_NUMBER_INLINE macro with TO_NUMBER,
which is currently a wrapper for %_ToNumber. Newly written JS
code should use TO_NUMBER (similar to TO_STRING, TO_INT32,
and friends).
Also finally remove the DefaultString/DefaultNumber builtins, which
are basically the ES5 version of ToPrimitive. Now all code uses the
ES6 version, which is implemented in Object::ToPrimitive and
JSReceiver::ToPrimitive in C++.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg,v8_linux_nosnap_dbg
R=jarin@chromium.org
BUG=v8:4307
LOG=n
Review URL: https://codereview.chromium.org/1384443002
Cr-Commit-Position: refs/heads/master@{#31054}
Improve bytecode generation for if when there's no else clause.
Display target addresses for jump instructions in
Bytecode::Disassemble().
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1373903005
Cr-Commit-Position: refs/heads/master@{#31052}
This CL also allows to use arbitrary number of feedback vector elements for particular slot kind.
Review URL: https://codereview.chromium.org/1370303004
Cr-Commit-Position: refs/heads/master@{#31050}
Arrow functions have been enabled by default since the 4.5 branch.
Review URL: https://codereview.chromium.org/1373633002
Cr-Commit-Position: refs/heads/master@{#31031}
This enables linter checking for "readability/namespace" violations
during presubmit and instead marks the few known exceptions that we
allow explicitly.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1371083003
Cr-Commit-Position: refs/heads/master@{#31019}
This prevents the internal incremental-marking.h to be usable outisde
of the "heap" directory. The logic inside that component is only useful
within the GC and is now properly encapsulated.
R=hpayer@chromium.org
Review URL: https://codereview.chromium.org/1374203002
Cr-Commit-Position: refs/heads/master@{#31010}
This is necessary because these operators can read heap (equality can actually write heap when flattening strings).
BUG=v8:4446
LOG=n
Review URL: https://codereview.chromium.org/1374683002
Cr-Commit-Position: refs/heads/master@{#31005}
The LiteralsArray will soon hold a type feedback vector. Code treats it as an
ordinary fixed array, and needs to stop that.
BUG=
Review URL: https://codereview.chromium.org/1374723002
Cr-Commit-Position: refs/heads/master@{#31000}
[run-tests.py]
- adding more detailed information about the flags
- show more detailed error message on failing Popen commands
BUG=
Review URL: https://codereview.chromium.org/1369343002
Cr-Commit-Position: refs/heads/master@{#30997}
This is mostly removing dead code and also dropping MUST_USE_RESULT
annotations from methods that cannot throw an exception anyways.
R=hpayer@chromium.org
Review URL: https://codereview.chromium.org/1370153002
Cr-Commit-Position: refs/heads/master@{#30995}
The comparison operators and ToBoolean are implemented by calling into
the runtime. There are new runtime methods are prefixed with Interpreter
to make use case clear.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1369123002
Cr-Commit-Position: refs/heads/master@{#30983}
This is a second step towards merging FeedbackVectorSlot and FeedbackVectorICSlot.
Review URL: https://codereview.chromium.org/1376443002
Cr-Commit-Position: refs/heads/master@{#30971}
This is a first step towards merging FeedbackVectorSlot and FeedbackVectorICSlot.
Review URL: https://codereview.chromium.org/1369973002
Cr-Commit-Position: refs/heads/master@{#30964}
Reason for revert:
failing again: https://chromegw.corp.google.com/i/client.v8/builders/V8%20Mac/builds/4505/steps/Mozilla%20%28flakes%29/logs/regress-416628
Original issue's description:
> Reland of "[heap] Add more tasks for parallel compaction"
>
> - We now compute the number of parallel compaction tasks, depending on the
> evacuation candidate list, the number of cores, and some hard limit.
> - Free memory is moved over to compaction tasks (up to some limit)
> - Moving over memory is done by dividing the free list of a given space up among
> other free lists. Since this is potentially slow we limit the maximum amount
> of moved memory.
>
> This reverts commit bfccd5187c.
>
> BUG=chromium:524425
> LOG=N
>
> Committed: https://crrev.com/7e283d746a194ceaaca114e2ba17504653d6a109
> Cr-Commit-Position: refs/heads/master@{#30945}
TBR=hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:524425
Review URL: https://codereview.chromium.org/1371653002
Cr-Commit-Position: refs/heads/master@{#30947}
- We now compute the number of parallel compaction tasks, depending on the
evacuation candidate list, the number of cores, and some hard limit.
- Free memory is moved over to compaction tasks (up to some limit)
- Moving over memory is done by dividing the free list of a given space up among
other free lists. Since this is potentially slow we limit the maximum amount
of moved memory.
This reverts commit bfccd5187c.
BUG=chromium:524425
LOG=N
Review URL: https://codereview.chromium.org/1365743003
Cr-Commit-Position: refs/heads/master@{#30945}
This name makes it clear that the flag (also the variant in the Compiler)
is talking about specializing to the function context instead of i.e. the
native context.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1372513003
Cr-Commit-Position: refs/heads/master@{#30934}
Verifies consistency of node inputs and uses:
- node inputs should agree with the input count computed from the node's operator.
- effect inputs should have effect outputs (or be a sentinel).
- control inputs should have control outputs (or be a sentinel).
- frame state inputs should be frame states (or be a sentinel).
- if the node has control uses, it should produce control.
- if the node has effect uses, it should produce effect.
- if the node has frame state uses, it must be a frame state.
I also removed some tests, either because they did not seem to be useful (scheduler) or they tested dead functionality (diamond effect phi).
Review URL: https://codereview.chromium.org/1368913002
Cr-Commit-Position: refs/heads/master@{#30927}
The actual Function.prototype.toMethod was removed some time already,
but there were some stuff (esp. %ToMethod) left in the tree, including
tests for %ToMethod. This code (and esp. the tests) cause trouble in
the process of moving bound functions away from JSFunction; so since
the code is unused anyway, we can as well remove it.
The original removal of Function.prototype.toMethod was in February
2015 in 68e4897586.
R=jarin@chromium.org
BUG=v8:3330
LOG=n
Review URL: https://codereview.chromium.org/1366063002
Cr-Commit-Position: refs/heads/master@{#30925}
+ Add bytecodes for conditional and unconditional jumps.
+ Add bytecodes for test/compare operations.
+ Expose jumps in bytecode-array-builder and add BytecodeLabel class for
identifying jump targets.
+ Add support for if..then...else in the bytecode-generator.
+ Implement jump bytecodes in the interpreter. Test/compare operations
dependent on runtime call for comparisons.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1343363002
Cr-Commit-Position: refs/heads/master@{#30918}
Reason for revert:
Failures on greedy RegAlloc, Fuzzer
Original issue's description:
> Remove register index/code indirection
>
> Previous to this patch, both the lithium and TurboFan register
> allocators tracked allocated registers by "indices", rather than
> the register codes used elsewhere in the runtime. This patch
> ensures that codes are used everywhere, and in the process cleans
> up a bunch of redundant code and adds more structure to how the
> set of allocatable registers is defined.
>
> Some highlights of changes:
>
> * TurboFan's RegisterConfiguration class moved to V8's top level
> so that it can be shared with Crankshaft.
> * Various "ToAllocationIndex" and related methods removed.
> * Code that can be easily shared between Register classes on
> different platforms is now shared.
> * The list of allocatable registers on each platform is declared
> as a list rather than implicitly via the register index <->
> code mapping.
>
> Committed: https://crrev.com/80bc6f6e11f79524e3f1ad05579583adfd5f18b2
> Cr-Commit-Position: refs/heads/master@{#30913}
TBR=akos.palfi@imgtec.com,bmeurer@chromium.org,jarin@chromium.org,paul.lind@imgtec.com,titzer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1365073002
Cr-Commit-Position: refs/heads/master@{#30914}
Previous to this patch, both the lithium and TurboFan register
allocators tracked allocated registers by "indices", rather than
the register codes used elsewhere in the runtime. This patch
ensures that codes are used everywhere, and in the process cleans
up a bunch of redundant code and adds more structure to how the
set of allocatable registers is defined.
Some highlights of changes:
* TurboFan's RegisterConfiguration class moved to V8's top level
so that it can be shared with Crankshaft.
* Various "ToAllocationIndex" and related methods removed.
* Code that can be easily shared between Register classes on
different platforms is now shared.
* The list of allocatable registers on each platform is declared
as a list rather than implicitly via the register index <->
code mapping.
Review URL: https://codereview.chromium.org/1287383003
Cr-Commit-Position: refs/heads/master@{#30913}
Adds LdaGlobal bytecode and augments BytecodeGenerator to load globals for
global variables and function calls.
Modified TestBytecodeGenerator to add the ability to specify that a bytecode
operand has an unknown value (used so we don't need to figure out the slot
index of a global). Also added a helper which checks equality of BytecodeArray
with the expected snipptets.
Modified TestInterpreter to allow it to take snippets of JS and have the
BytecodeGenerator generate the bytecode rather than having to build a
BytecodeArray manually. This is used to enable the global tests.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1361113002
Cr-Commit-Position: refs/heads/master@{#30910}
Introduce a new macro TO_STRING that maps to %_ToString and use that
instead of calling into any of the ToString/NonStringToString JavaScript
builtins. Also remove the TO_STRING_INLINE macro, which is basically
obsolete with %_ToString. We still have a few uses of ToString left (via
the utils export mechanism), where we need to investigate whether we
will tank badly if we replace them with TO_STRING as well.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg,v8_linux_nosnap_dbg
R=yangguo@chromium.org
BUG=v8:4307
LOG=n
Review URL: https://codereview.chromium.org/1323543002
Cr-Commit-Position: refs/heads/master@{#30895}
Reason for revert:
[Sheriff] May have caused this new flake:
http://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/5412
Original issue's description:
> [heap] Add more tasks for parallel compaction
>
> - We now compute the number of parallel compaction tasks, depending on the
> evacuation candidate list, the number of cores, and some hard limit.
> - Free memory is moved over to compaction tasks (up to some limit)
> - Moving over memory is done by dividing the free list of a given space up among
> other free lists. Since this is potentially slow we limit the maximum amount
> of moved memory.
>
> BUG=chromium:524425
> LOG=N
>
> Committed: https://crrev.com/0e842418835eea85886a06cf37052895bc8a17db
> Cr-Commit-Position: refs/heads/master@{#30886}
TBR=hpayer@chromium.org,mlippautz@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:524425
Review URL: https://codereview.chromium.org/1356363005
Cr-Commit-Position: refs/heads/master@{#30888}
- We now compute the number of parallel compaction tasks, depending on the
evacuation candidate list, the number of cores, and some hard limit.
- Free memory is moved over to compaction tasks (up to some limit)
- Moving over memory is done by dividing the free list of a given space up among
other free lists. Since this is potentially slow we limit the maximum amount
of moved memory.
BUG=chromium:524425
LOG=N
Review URL: https://codereview.chromium.org/1354383002
Cr-Commit-Position: refs/heads/master@{#30886}
Currently Execution::Call (and friends) still duplicate a lot of the
Call sequence logic that should be encapsulated in the Call and
CallFunction builtins. So the plan now is to switch Execution::Call
to accept any Callable and just pass that through to the Call builtin.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_dbg
R=jarin@chromium.org
BUG=v8:4413
LOG=n
Committed: https://crrev.com/359645f48156e15f235e9a9ede7910e0bcd9ae45
Cr-Commit-Position: refs/heads/master@{#30791}
Review URL: https://codereview.chromium.org/1353723002
Cr-Commit-Position: refs/heads/master@{#30808}
Currently Execution::Call (and friends) still duplicate a lot of the
Call sequence logic that should be encapsulated in the Call and
CallFunction builtins. So the plan now is to switch Execution::Call
to accept any Callable and just pass that through to the Call builtin.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_dbg
R=jarin@chromium.org
BUG=v8:4413
LOG=n
Review URL: https://codereview.chromium.org/1353723002
Cr-Commit-Position: refs/heads/master@{#30791}
We already disallowed observing the global proxy; now we also
disallow any observation of access-checked objects (regardless
of whether the access check would succeed or fail, since there's
not a good way to tell the embedder what kind of access is being
requested).
Also disallow Object.getNotifier for the same reasons.
BUG=chromium:531891
LOG=y
Review URL: https://codereview.chromium.org/1346813002
Cr-Commit-Position: refs/heads/master@{#30774}
This adds a utils object meant specifically for V8 extras, presenting a limited
API surface for doing things that would otherwise require %-functions.
BUG=v8:4276
LOG=Y
R=jochen@chromium.org,yangguo@chromium.org
Review URL: https://codereview.chromium.org/1343113003
Cr-Commit-Position: refs/heads/master@{#30773}
Add support for `get` and `set` as shorthand properties. Also
supports them for CoverInitializedName in BindingPatterns and (once implemented)
AssignmentPatterns.
BUG=v8:4412, v8:3584
LOG=N
R=adamk, aperez, wingo, rossberg
Review URL: https://codereview.chromium.org/1328083002
Cr-Commit-Position: refs/heads/master@{#30769}
There isn't a plan to turn it on soon, so we'll take it out in favor of cleaner code.
BUG=
Review URL: https://codereview.chromium.org/1202173002
Cr-Commit-Position: refs/heads/master@{#30767}
This makes sure that the arguments object materialization in the method
prologue is composable with respect to inlining. The generic runtime
functions materializing those objects now respect the deoptimization
information when reconstructing the original arguments.
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/1340313003
Cr-Commit-Position: refs/heads/master@{#30766}
This models the materialization of arguments objects in the prologue
within the IR graph. It will in turn allow us to optimize access to
these objects and also correctly handle them with inlining.
R=bmeurer@chromium.org,mvstanton@chromium.org
TEST=cctest/test-run-jsobjects/Arguments*
Review URL: https://codereview.chromium.org/1344553003
Cr-Commit-Position: refs/heads/master@{#30735}
Remove incorrect usage of callee-saved FPU regs (f20 and above).
Also remove unnecessary push/pop which were occasionally unpaired,
and caused crash.
TEST=cctest/test-assembler-mips[64]
BUG=
Review URL: https://codereview.chromium.org/1338713004
Cr-Commit-Position: refs/heads/master@{#30729}
Adds support for JS calls to the interpreter. In order to support
calls from the interpreter, the PushArgsAndCall builtin is added
which pushes a sequence of arguments onto the stack and calls
builtin::Call.
Adds the Call bytecode.
MIPS port contributed by akos.palfi@imgtec.com in https://codereview.chromium.org/1334873002/
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1323463005
Cr-Commit-Position: refs/heads/master@{#30710}
Correctly save and restore FP registers in cctest/ConvertDToI to
avoid accidental register overwriting by the generated code.
Note: This failure is manifested only in R6 mode.
TEST=test/cctest/interpreter/test-interpreter
BUG=
Review URL: https://codereview.chromium.org/1337023002
Cr-Commit-Position: refs/heads/master@{#30700}
Inner functions must be eagerly parsed for scope analysis, but the full AST is
also kept around even though it's not needed.
This CL mitigates this problem by allocating some AstNodes of the inner function
to a temporary Zone which is deallocated once the scope information has been
built. The remaining nodes (such as VariableProxy) must persist until scope
analysis actually happens, and have to be allocated to a parser-persistent Zone.
BUG=417697
LOG=N
Review URL: https://codereview.chromium.org/1304923004
Cr-Commit-Position: refs/heads/master@{#30685}
Replace the ADD, SUB, etc. builtins with proper runtime implementations,
and expose them as runtime calls that can be used by the code stubs and
the interpreter (for now).
Also remove all the support runtime functions for ADD, SUB and friends,
namely %NumberAdd, %NumberSub, and so on.
R=mstarzinger@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg,v8_linux_nosnap_dbg
Review URL: https://codereview.chromium.org/1333843002
Cr-Commit-Position: refs/heads/master@{#30680}
This removes the aforementioned flag which has been on by default for a
while now. Note that this does not control optimization decisions, only
the last-resort bailout in the graph builder.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1335543002
Cr-Commit-Position: refs/heads/master@{#30673}
Adds support for property store operations via Store/KeyedStore ICs. Adds the
following bytecodes:
- StoreIC
- KeyedStoreIC
The --vector_store flag is now required for --ignition.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1319833004
Cr-Commit-Position: refs/heads/master@{#30660}
This moves incremental marking steps from gc-idle-time-handler and heap to the new incremental marking task.
BUG=chromium:490559
LOG=NO
Review URL: https://codereview.chromium.org/1265423002
Cr-Commit-Position: refs/heads/master@{#30641}
When there is no explicit return we need to generate an implicit
return undefined.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1308693014
Cr-Commit-Position: refs/heads/master@{#30639}
Similar to DELETE, the IN builtin is just a thin wrapper for %HasElement
and %HasProperty anyway, and cannot be optimized, plus it had a weird
special fast case (which also involved at least one LOAD_IC plus some
intrinsic magic).
R=yangguo@chromium.org,jarin@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_win_nosnap_shared_rel
Committed: https://crrev.com/72d60a1e80e81e2e68ca402665e2acbc46c5e471
Cr-Commit-Position: refs/heads/master@{#30154}
Review URL: https://codereview.chromium.org/1295433002
Cr-Commit-Position: refs/heads/master@{#30582}
The last changes for vector store functionality, they are in 3 areas:
1) The new vector [keyed] store code stubs - implementation.
2) IC and handler compiler adjustments
3) Odds and ends. A change in ast.cc, a test update, a small Oracle fix.
TBR=bmeurer@chromium.org, jkummerow@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1319123004
Cr-Commit-Position: refs/heads/master@{#30581}
Reason for revert:
[Sheriff] Breaks compile on arm:
http://build.chromium.org/p/client.v8/builders/V8%20Arm%20-%20builder/builds/6590
Original issue's description:
> Vector ICs: platform support for vector-based stores.
>
> The last changes for vector store functionality, they are in 3 areas:
>
> 1) The new vector [keyed] store code stubs - implementation.
> 2) IC and handler compiler adjustments
> 3) Odds and ends. A change in ast.cc, a test update, a small Oracle fix.
>
> BUG=
>
> Committed: https://crrev.com/63af1b3aec6547e7cdf502666ff79c562de8b679
> Cr-Commit-Position: refs/heads/master@{#30570}
TBR=bmeurer@chromium.org,jkummerow@chromium.org,mvstanton@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1303053004
Cr-Commit-Position: refs/heads/master@{#30571}
The last changes for vector store functionality, they are in 3 areas:
1) The new vector [keyed] store code stubs - implementation.
2) IC and handler compiler adjustments
3) Odds and ends. A change in ast.cc, a test update, a small Oracle fix.
BUG=
Review URL: https://codereview.chromium.org/1328603003
Cr-Commit-Position: refs/heads/master@{#30570}
This is to support WebAssembly 64-bit ints in the short term, since it
currently uses CheckedLoad/CheckedStore for accesses to the memory. In the
long run, we'll change this to be explicit bounds checks that throw on out
of bounds.
R=bmeurer@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1310323006
Cr-Commit-Position: refs/heads/master@{#30555}
This turns the has_instance_call_handler bit on Map into an is_callable
bit, that matches the spec definition of IsCallable (i.e. instances have
[[Call]] internal methods).
Also fix the typeof operator to properly say "function" for everything
that is callable.
Also remove the (unused) premature %_GetPrototype optimization from
Crankshaft, which just complicated the Map bit swap.
R=mstarzinger@chromium.org, rossberg@chromium.org, yangguo@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg
Review URL: https://codereview.chromium.org/1316933002
Cr-Commit-Position: refs/heads/master@{#30552}
Adds support for property load operations via Load/KeyedLoad ICs. Adds the
following bytecodes:
- LoadIC
- KeyedLoadIC
Also adds support to the interpreter assembler for loading the type feedback
vector from the function on the stack, and calling ICs.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1309843007
Cr-Commit-Position: refs/heads/master@{#30543}
We're moving away from using CompilationInfo as a big bag o' stuff.
Passing in just what we need to several AstVisitors to avoid
increasing the problem.
BUG=None
TEST=trybots
R=titzer@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1318823010
Cr-Commit-Position: refs/heads/master@{#30529}
Walk asm.js module ASTs, attach concrete type information
in preparation for generating a WASM module.
cctest test coverage (mjsunit coming in later CL).
Expressions, function tables, and foreign functions have coverage.
Statement coverage to be expanded in a later CL.
BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=test-asm-validator
R=rossberg@chromium.org,titzer@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1322773002
Cr-Commit-Position: refs/heads/master@{#30520}
Since the constructor is also the class object itself, allowing it to
retroactively become a strong object would have unintuitive consequences
wrt the strength of the other functions of the class, and whether instances
would be considered instances of a strong class.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1314203002
Cr-Commit-Position: refs/heads/master@{#30519}
Use the correct sNaN value on mips32r6 also.
TEST=test-api/QuietSignalingNaNs,test-api/Threading1
BUG=
Review URL: https://codereview.chromium.org/1311473007
Cr-Commit-Position: refs/heads/master@{#30510}
This CL us a pure refactoring that makes an empty compilation unit
including just "isolate.h" or "contexts.h" but not "objects-inl.h"
compile without warnings or errors. This is needed to further reduce
the header dependency tangle.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1322883002
Cr-Commit-Position: refs/heads/master@{#30500}
The interrupts are already postponed in message handlers [1]. This CL aligns debug event listener (the mechanism that is actually used in Chrome DevTools) implementation with that. Handling interrupts on events like v8::AfterCompile leads to crashes like the one in the lined bug. This happens because in the interrupt handler we may change debugger state.
[1] https://codereview.chromium.org/309533009/diff/40001/src/debug.cc
BUG=chromium:520702
LOG=Y
Review URL: https://codereview.chromium.org/1321263002
Cr-Commit-Position: refs/heads/master@{#30488}
Unbounded is defined in terms of None any Any,
which don't require an explicit zone.
Switching Unbounded to be the same.
BUG= None
TEST= trybots
R= titzer@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1322003002
Cr-Commit-Position: refs/heads/master@{#30482}
Reason for revert:
Breaks http://build.chromium.org/p/client.v8/builders/V8%20Arm%20-%20debug%20-%202/builds/2372
Original issue's description:
> [heap] GC flag cleanup/restructuring.
>
> * GC's flags are now proper flags and not int.
> * Callback flags are not threaded through but only set once like gc flags
> * Callers of methods that trigger GCs need to pass a reason when not using
> the default parameters.
>
> Furthermore, each GC invocation can be passed the GC and GCCallback flags. We
> usually override the currently set flags upon finishing a GC cylce, but are able
> to restore the previously set if desired. This is useful for explicitely
> triggered scavenges or external requests that interrupt the current behaviour.
>
> BUG=
>
> Committed: https://crrev.com/f4f3b431b9ce0778d926acf03c0d36dae5c0cba4
> Cr-Commit-Position: refs/heads/master@{#30457}
TBR=hpayer@chromium.org,yangguo@chromium.org,mlippautz@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1303393004
Cr-Commit-Position: refs/heads/master@{#30463}
The usage of Unique<T> throughout the TurboFan IR does not have any
advantage. There is no single point in time when they are initialized
and most use-sites looked through to the underlying Handle<T> anyways.
Also there already was a mixture of Handle<T> versus Unique<T> in the
graph and this unifies the situation to use Handle<T> everywhere.
R=bmeurer@chromium.org,titzer@chromium.org
Review URL: https://codereview.chromium.org/1314473007
Cr-Commit-Position: refs/heads/master@{#30458}
* GC's flags are now proper flags and not int.
* Callback flags are not threaded through but only set once like gc flags
* Callers of methods that trigger GCs need to pass a reason when not using
the default parameters.
Furthermore, each GC invocation can be passed the GC and GCCallback flags. We
usually override the currently set flags upon finishing a GC cylce, but are able
to restore the previously set if desired. This is useful for explicitely
triggered scavenges or external requests that interrupt the current behaviour.
BUG=
Review URL: https://codereview.chromium.org/1314863003
Cr-Commit-Position: refs/heads/master@{#30457}
This patch changes the switch scope desugaring to create blocks which
propagate their 'return value' for eval.
BUG=v8:4399
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1309303006
Cr-Commit-Position: refs/heads/master@{#30454}
This patch makes 'let' a contextual keyword in both strict and sloppy mode.
It behaves as a keyword when used at the beginning of a StatementListItem
or lexical declaration at the beginning of a for statement, if it is followed
by an identifier, [ or {. Implementing this change requires an extra token
look-ahead by the parser which is only invoked in certain cases (so as to
avoid parsing RegExps as ECMAScript tokens). This might result in a slowdown
of the scanner, but performance testing of this patch hasn't yet found much
of a regression.
BUG=v8:3305
LOG=Y
R=adamk,vogelheim
Review URL: https://codereview.chromium.org/1315673009
Cr-Commit-Position: refs/heads/master@{#30451}
Adds support to the interpreter for loading literals from the constant pool.
Adds the LoadConstant bytecode and makes use of it for loading large Smis and
HeapObject literals.
Also removes unused HandleVector from utils.h.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1321663003
Cr-Commit-Position: refs/heads/master@{#30450}
This data structure uses the public heap API only and is not specific
to any heap internals. It should be usable throughout V8 and inclusion
of the header file should not be restricted.
R=titzer@chromium.org
Review URL: https://codereview.chromium.org/1320503004
Cr-Commit-Position: refs/heads/master@{#30443}
This is the first step towards a spec compliant ToPrimitive
implementation (and therefore spec compliant ToNumber, ToString,
ToName, and friends). It adds support for the @@toPrimitive
symbol that was introduced with ES2015, and also adds the new
Symbol.prototype[@@toPrimitive] and Date.prototype[@@toPrimitive]
initial properties.
There are now runtime functions for %ToPrimitive, %ToNumber and
%ToString, which do the right thing and should be used as fallbacks
instead of the hairy runtime.js implementations. I will do the
same for the other conversion operations mentioned by the spec in
follow up CLs. Once everything is in place we can look into
optimizing things further, so that we don't always call into the
runtime.
Also fixed Date.prototype.toJSON to be spec compliant.
R=mstarzinger@chromium.org, yangguo@chromium.org
BUG=v8:4307
LOG=y
Review URL: https://codereview.chromium.org/1306303003
Cr-Commit-Position: refs/heads/master@{#30434}
The CompactionSpace is temporarily used during compaction to hold migrated
objects. The payload is merged back into the corresponding space after
compaction.
Note the this is not the complete implementation and it is currently only used in a test.
BUG=chromium:524425
LOG=N
Review URL: https://codereview.chromium.org/1314493007
Cr-Commit-Position: refs/heads/master@{#30407}
Adds a (currently unused) constant_pool() field to BytecodeArray objects.
This field points to a FixedArray object which will be used to hold constants.
The BytecodeArray is now a mixed values object type, with the
kConstantPoolOffset object holding a tagged pointer, but the remainder of the
object holding raw bytes (which could look like tagged pointers but are not).
Modify the BytecodeArray GC visitors to deal with this and test that the
field is migrated properly when evacuated.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1314953004
Cr-Commit-Position: refs/heads/master@{#30404}
Adds support for parameters to the BytecodeArrayBuilder and BytecodeGenerator.
Parameters are accessed as negative interpreter registers.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1303403004
Cr-Commit-Position: refs/heads/master@{#30403}
TC39 agreed to disallow "use strict" directives in function body when
non-simple parameter lists are used.
This is a continuation of caitp's CL https://codereview.chromium.org/1281163002/
with some refactorings removed for now.
Still TODO: there is a lot of duplication between the is_simple field of
FormalParametersBase and the NonSimpleParameter property ExpressionClassifier
keeps track of. It should be possible to remove the former with a minor
refactoring of arrow function parsing. This will be attempted in a follow-up CL.
BUG=
LOG=N
Review URL: https://codereview.chromium.org/1300103005
Cr-Commit-Position: refs/heads/master@{#30388}
%_IsObject(foo) is equivalent to typeof foo === 'object' and has
exactly the same optimizations, so there's zero need for %_IsObject
in our code base.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1313903003
Cr-Commit-Position: refs/heads/master@{#30380}
Adds implementations and tests for the following bytecodes:
- Add
- Sub
- Mul
- Div
- Mod
Also adds the Mod bytecode and adds support to BytecodeGenerator and
BytecodeArrayBuilder to enable it's use.
The current bytecodes always call through to the JS builtins. This also adds
LoadObjectField and CallJSBuiltin operators to the InterpreterAssembler.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1300813005
Cr-Commit-Position: refs/heads/master@{#30352}
Moves the GCCallbackflags where they belong, i.e., {Heap}, and gets rid of
IncrementalMarking::Start() callsites.
BUG=
Review URL: https://codereview.chromium.org/1314853002
Cr-Commit-Position: refs/heads/master@{#30349}
Adding an AstExpressionVisitor to touch each expression node in
an AST.
Adding TypingReseter to clear the slate after a failed asm.js
validation that has set partial typing information.
Adding a ExpressionTypeCollector to walk the expressions
in an AST and emit them as a string for testing.
Adding tests of the above.
LOG=N
BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=test-typing-reset,test-ast-expression-visitor
R=rossberg@chromium.org,titzer@chromium.org
Review URL: https://codereview.chromium.org/1288773007
Cr-Commit-Position: refs/heads/master@{#30336}
Replaces all instances of the code which computed the debug
name of a stub or function with calls to CompileInfo::GetDebugName instead.
Also:
- Removes useless parameter on CodeStub::GetMajorName
- Removes FakeStubForTesting since it is no longer required
- Adds CompileInfo::ShouldEnsureSpaceForLazyDeopt() to replace unclear calls to IsStub().
Review URL: https://codereview.chromium.org/1297203002
Cr-Commit-Position: refs/heads/master@{#30324}
Adds Uint32x4, Uint16x8, and Uint8x16 types.
Adds all functions in the current spec, except for loads and stores.
LOG=Y
BUG=v8:4124
Review URL: https://codereview.chromium.org/1294513004
Cr-Commit-Position: refs/heads/master@{#30322}
These two test cases introduced by 8525136b require that the double register is >=2.
But currently on x87 turbofan implementation only 1 double register is supported.
BUG=
Review URL: https://codereview.chromium.org/1308763003
Cr-Commit-Position: refs/heads/master@{#30321}
FutexEmulation::Wait can potentially block forever on a condition variable. We
want to allow this to be interrupted (for a debugger, or to terminate the
thread, for example).
The previous implementation would periodically wake up the waiter to check for
interrupts. This CL modifies the StackGuard so it wakes the blocked futex if
the thread should be interrupted.
BUG=chromium:497295
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1230303005
Cr-Commit-Position: refs/heads/master@{#30311}
- Introduce a proper bit for SIMD primitive values.
- Introduce constructors for individual SIMD types. These are currently just classes, which seems good enough for now, given that we always have exactly one global map per SIMD type.
The only problem with using class types for SIMD is that a SIMD constant won't be a subtype of its specific type, only of the general SIMD type. But until we actually introduce SIMD constants into the compiler that shouldn't matter.
R=jarin@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1303863002
Cr-Commit-Position: refs/heads/master@{#30294}
Not all parenthesized AssignmentExpressions whose components are valid
binding patterns are valid arrow function formal parameters. In
particular (a,b,c)() is not valid, and in general the existing code
wasn't catching the tail productions of ConditionalExpression,
BinaryExpression, PostfixExpression, LeftHandSideExpression,
and MemberExpression.
Thanks to Adrian Perez for the test case.
BUG=v8:4211
LOG=Y
R=rossberg@chromium.org
Review URL: https://codereview.chromium.org/1306583002
Cr-Commit-Position: refs/heads/master@{#30286}
GC flags are now part of the {Heap} and should be respected by all
sub-components.
Also add a infrastructure to write tests accessing private methods.
Review URL: https://codereview.chromium.org/1301183002
Cr-Commit-Position: refs/heads/master@{#30281}
This prevents leakage of the gc-tracer.h declarations inside of the
heap and prevents it from being exposed to the world. Protects private
state from being inadvertently mocked with.
R=mlippautz@chromium.org
Review URL: https://codereview.chromium.org/1294763004
Cr-Commit-Position: refs/heads/master@{#30276}
Embedders would use these for features which must be able to be turned
off at runtime, despite being compiled into V8. They can be turned on
and off by the embedder using the --experimental_extras flag, e.g. via
v8::SetFlagsFromString.
R=yangguo@chromium.org, mlippautz@chromium.org, hpayer@chromium.org
BUG=chromium:507137
LOG=Y
Review URL: https://codereview.chromium.org/1284413002
Cr-Commit-Position: refs/heads/master@{#30260}
Bytecode generator for local assignment and basic binary operations.
Command-line flag for printing bytecodes.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1294543002
Cr-Commit-Position: refs/heads/master@{#30221}
Makes the following modifications to the interpreter builtins and
InterpreterAssembler:
- Adds an accumulator register and initializes it to undefined()
- Adds a register file pointer register and use it instead of FramePointer to
access registers
- Modifies builtin to support functions with 0 regiters in the register file
- Modifies builtin to Call rather than TailCall to first bytecode handler.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1289863003
Cr-Commit-Position: refs/heads/master@{#30219}
- Make the API look like v8::V8::InitializeICU.
(That is: A static method call, not an object to be created on the stack.)
- Fix path separator on Windows, by calling base::OS::isPathSeparator.
- Move into API, so that it can be called by hello-world & friends.
- Actually call it from hello-world and friends.
R=jochen@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1292053002
Cr-Commit-Position: refs/heads/master@{#30174}
Reason for revert:
Breaks win32 nosnap
Original issue's description:
> [runtime] Remove useless IN builtin.
>
> Similar to DELETE, the IN builtin is just a thin wrapper for %HasElement
> and %HasProperty anyway, and cannot be optimized, plus it had a weird
> special fast case (which also involved at least one LOAD_IC plus some
> intrinsic magic).
>
> R=yangguo@chromium.org,jarin@chromium.org
>
> Committed: https://crrev.com/72d60a1e80e81e2e68ca402665e2acbc46c5e471
> Cr-Commit-Position: refs/heads/master@{#30154}
TBR=yangguo@chromium.org,jarin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1288923002
Cr-Commit-Position: refs/heads/master@{#30155}
Similar to DELETE, the IN builtin is just a thin wrapper for %HasElement
and %HasProperty anyway, and cannot be optimized, plus it had a weird
special fast case (which also involved at least one LOAD_IC plus some
intrinsic magic).
R=yangguo@chromium.org,jarin@chromium.org
Review URL: https://codereview.chromium.org/1295433002
Cr-Commit-Position: refs/heads/master@{#30154}
Modifies the BytecodeArrayBuilder to create register operands which are
negative. This reduces the number of instructions to access registers
by the interpreter and allows us to use positive register operands to
access parameter values.
Adds a Register class to keep register usage typesafe and simplify the
convertion to bytecode operand values.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1283313003
Cr-Commit-Position: refs/heads/master@{#30151}
The DELETE builtin calls through to %DeleteProperty anyway, so we
can as well skip the builtin completely and always call into the
runtime directly. Also add different entries depending on whether
calling code is in sloppy or strict/strong mode.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1291973002
Cr-Commit-Position: refs/heads/master@{#30148}
The operations were available on ARM64 and x86-32 but were unused.
It has been conjectured that nontemporals can be used for rowhammer-like bitflips more easily than regular load/store operations. It is therefore desirable to avoid generating these instructions in the future.
R= titzer, jochen, jln, Mark Seaborn, ruiq
Review URL: https://codereview.chromium.org/1276113002
Cr-Commit-Position: refs/heads/master@{#30139}
This tries to remove includes of "-inl.h" headers from normal ".h"
headers, thereby reducing the chance of any cyclic dependencies and
decreasing the average size of our compilation units.
Note that this change still leaves 7 violations of that rule in the
code. However there now is the "tools/check-inline-includes.sh" tool
detecting such violations.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1283033003
Cr-Commit-Position: refs/heads/master@{#30125}
This way we can greatly simplify the different variants of ToObject in
our codebase and make them more uniform and robust. Adding a new
primitive doesn't require finding and changing all those places again,
but it is sufficient to setup the constructor function index when
allocating the map.
We use the inobject properties field of Map, which is invalid primitive
maps anyway.
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/1276533003
Cr-Commit-Position: refs/heads/master@{#30119}
Also remove unused max_capcity_ field in old spaces.
BUG=chromium:518028,chromium:504854
LOG=n
Review URL: https://codereview.chromium.org/1284853003
Cr-Commit-Position: refs/heads/master@{#30114}
There's no need to have one InstanceType per SIMD primitive type (this
will not scale long-term). Also reduce the amount of code duplication
and make it more robust wrt adding new SIMD types.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1273353003
Cr-Commit-Position: refs/heads/master@{#30107}
The following errors come up when compiling v8
with clang 3.7 on FreeBSD/amd64:
src/runtime/runtime-i18n.cc:629:37: error: reinterpret_cast from
'nullptr_t' to 'v8::internal::Smi *' is not allowed
local_object->SetInternalField(1, reinterpret_cast<Smi*>(NULL));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
test/cctest/test-heap.cc:131:20: error: reinterpret_cast from
'nullptr_t' to 'v8::internal::Object *' is not allowed
Handle<Object> n(reinterpret_cast<Object*>(NULL), isolate);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test/cctest/test-heap.cc:1989:18: error: reinterpret_cast from
'nullptr_t' to 'Address' (aka 'unsigned char *') is not
allowed
Address base = reinterpret_cast<Address>(NULL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+add myself to the AUTHORS file.
BUG=
Review URL: https://codereview.chromium.org/1277353002
Cr-Commit-Position: refs/heads/master@{#30103}
Moves the creation of the interpreter table early on during initialization
to ensure that even on nosnap builds it still gets allocated in the
first page.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1278413002
Cr-Commit-Position: refs/heads/master@{#30096}
TurboFan is now a requirement and supported by all backends, so we don't
need those macros (plus all the machinery on top) anymore.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1282763002
Cr-Commit-Position: refs/heads/master@{#30082}
When a (prototype) map registers as a user of its own prototype, it now remembers the index in that prototype's registry where it is listed.
This remembered index is used on un-registration to find the right slot to clear without walking the entire registry.
Compaction of the registry must update all entries' remembered indices.
BUG=chromium:517778,chromium:517406
LOG=n
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1276353004
Cr-Commit-Position: refs/heads/master@{#30079}
Also clean up variable naming in min_max and other tests. Fix class_fmt in mips64 assembler test for proper NaN checking
Review URL: https://codereview.chromium.org/1276813004
Cr-Commit-Position: refs/heads/master@{#30073}
Note that this tests performed unnecessary many iterations which led to
long runtimes in debug mode and also caused flaky GCs during that would
cause the optimized code map to be flushed and violated assumptions.
R=yangguo@chromium.org
BUG=v8:4363
LOG=N
Review URL: https://codereview.chromium.org/1280973002
Cr-Commit-Position: refs/heads/master@{#30070}
This fixes a corner-case where extending an optimized code map left
stale entries in the abandoned copy. This can cause havoc not only in
the heap verifier but also in the GC, because stale entries have not
been recorded when being trated weakly.
Note that this also pre-tenures all optimized code maps into old-space
because their lifetime is coupled to the SharedFunctionInfo anyways.
R=hpayer@chromium.org
TEST=cctest/test-heap/Regress514122
BUG=chromium:514122
LOG=N
Review URL: https://codereview.chromium.org/1277873002
Cr-Commit-Position: refs/heads/master@{#30047}
We missed a check whether we can actually do incremental marking when starting
it on reaching the external allocation limit.
BUG=chromium:517195
LOG=N
Review URL: https://codereview.chromium.org/1274983002
Cr-Commit-Position: refs/heads/master@{#30043}
These flags weren't doing any real work, since the decision of whether some
source code is a script or module is made outside the parser (currently,
by the V8 API).
The only behavior change in this patch is to always parse 'import' and
'export' as their Token values, which changes the error message from
"Unexpected reserved word" to "Unexpected token import" (which doesn't
seem particularly harmful).
Review URL: https://codereview.chromium.org/1262913003
Cr-Commit-Position: refs/heads/master@{#30034}
This is only an estimate since it counts objects that could be shared,
for example strings, cow arrays, heap numbers, etc.
It however ignores objects that could be shared, but may only be used
by the context to be measured, for example shared function infos,
script objects, scope infos, etc.
R=jochen@chromium.org
Review URL: https://codereview.chromium.org/1268333004
Cr-Commit-Position: refs/heads/master@{#30029}
This introduces a CopyFixedArrayAndGrow method on Factory that takes
the "grow amount" instead of the "new size" as an argument. The new
interface is safer because it allows for mutations by the GC that
potentially trim the source array.
This also fixes a bug in SharedFunctionInfo::AddToOptimizedCodeMap
where the aformentioned scenario led to unused entries within the
optimized code map.
Note that FixedArray::CopySize is hereby deprecated because it is
considered unsafe and should no longer be used.
R=hpayer@chromium.org
TEST=mjsunit/regress/regress-crbug-513507
BUG=chromium:513507
LOG=n
Review URL: https://codereview.chromium.org/1255173006
Cr-Commit-Position: refs/heads/master@{#30012}
Store arity in FormalParameters; store name (instead of var) and is_rest flag in individual parameters. Ensure that the arity is always maintained consistently.
This is preparation for more parameter destructuring adjustments. In particular, a follow-up CL will separate parameter recording from declaring the variables.
R=adamk@chromium.org, littledan@chromium.org
BUG=v8:811
LOG=N
Review URL: https://codereview.chromium.org/1259013003
Cr-Commit-Position: refs/heads/master@{#30002}
Change minimum BytecodeArray frame size to zero now return value is in
the accumulator.
Fix inconsistent checks in bytecode-array-builder.cc.
Simplify bytecode disassembly by adding Bytecodes::Decode to
disassemble one bytecode and operands.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1259193004
Cr-Commit-Position: refs/heads/master@{#29988}
There is only one use case for it: String.prototype.search converts a
string argument into a RegExp. The cache is used to avoid repeating that
conversion. However, this does not make the added complexity worthwhile.
Review URL: https://codereview.chromium.org/1267493006
Cr-Commit-Position: refs/heads/master@{#29985}
The BytecodeArrayBuilder has responsibility for emitting the BytecodeArray. It will be used by the AST walker.
Bytecode now uses an accumulator plus registers rather being pure register based.
Update BytecodeArray::Disassemble to print operand information.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1266713004
Cr-Commit-Position: refs/heads/master@{#29970}
Since we need the notion of a dummy vector ic, we can use that to avoid
a special case of the IC constructor. Also, consolidate the two dummy
ICs into one.
BUG=
Review URL: https://codereview.chromium.org/1268783004
Cr-Commit-Position: refs/heads/master@{#29956}
The idle time handler should never return DONE or DO_SCAVENGE for
background tabs. Upon receiving DONE chrome will stop sending idle notifications.
BUG=chromium:515174
LOG=NO
Review URL: https://codereview.chromium.org/1269583002
Cr-Commit-Position: refs/heads/master@{#29926}
When a Property or a VariableProxy is used as the left hand side of an
assignment statement, there is no need to allocate a LOAD_IC feedback
vector slot for it. Alter the numbering phase to support this.
BUG=
Review URL: https://codereview.chromium.org/1262803002
Cr-Commit-Position: refs/heads/master@{#29924}
Scoping rules are different on recompile vis-a-vis global loads.
BUG=chromium:514526
LOG=y
NOTREECHECKS=true
Review URL: https://codereview.chromium.org/1256413005
Cr-Commit-Position: refs/heads/master@{#29896}
--harmony_sloppy includes behavior to turn on sloppy mode lexical
bindings. Before this patch, it also included a way to parse let
which is likely web-incompatible (let is disallowed as an
identifier). This patch splits off the let parsing from the more
general block scoping code, so that block scoping can be developed
independently.
R=adamk
LOG=N
BUG=v8:3305
Review URL: https://codereview.chromium.org/1255013002
Cr-Commit-Position: refs/heads/master@{#29855}
- Ensure frame_size is always set during allocation.
- Add DCHECKs that frame_size is a valid value
- Remove locals_count, which we don't need yet (possibly every)
- Add a newline at the end of BytecodeArray::Dissassemble
for each bytecode.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1254873002
Cr-Commit-Position: refs/heads/master@{#29852}
While at it, remove the notion of INTERNAL variables.
@caitp: Took some parts from your CL, since I was blocked on the temp scope bug.
R=mstarzinger@chromium.org
BUG=512574
LOG=N
Review URL: https://codereview.chromium.org/1250513004
Cr-Commit-Position: refs/heads/master@{#29812}
Using the GraphBuilder base class forces each node creation to go
through a virtual function dispatch just for the sake of saving the
duplication of the NewNode helper methods. In total that added up to
saving minus (sic!) six lines of code.
R=titzer@chromium.org
Review URL: https://codereview.chromium.org/1252093002
Cr-Commit-Position: refs/heads/master@{#29799}
In simulator data trace, DSLL did not print result and
BAL/BGEZAL omitted result from an instruction executed
in delay slot.
TEST=cctest/test-assembler-mips[64]
BUG=
Review URL: https://codereview.chromium.org/1245173002
Cr-Commit-Position: refs/heads/master@{#29796}
This allows the optimized code map to contain no context-dependent
entries, but still hold one context-independent entry. This is a
precursor to extending the lifetime of the context-independent entry.
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/1249543005
Cr-Commit-Position: refs/heads/master@{#29788}
The background parser checks for debugger state in its constructor. This
is not good enough, since the debugger state may change afterwards, but
before compiling takes place. As the background parser can only parse
lazily, this could mean that due to debugging, we try to eagerly compile
an inner function we have not eagerly parsed.
R=jochen@chromium.org
Review URL: https://codereview.chromium.org/1247743002
Cr-Commit-Position: refs/heads/master@{#29784}
This reverts commit 80b3f16951.
Revert "Record code slots that may point to evacuation candidate objects after deoptimizing them."
This reverts commit 4621210cfe.
BUG=chromium:507840
LOG=n
Review URL: https://codereview.chromium.org/1239383004
Cr-Commit-Position: refs/heads/master@{#29778}
The InterpreterAssembler needs to specify a specific CallDescriptor type
instead of using the SimplifiedCDescriptor type. This CL makes it possible
to specify the CallDescriptor used by the RawMachineAssembler instead of
specifying a MachineSignature.
Also removes instruction-selector-tester.h which was erroneously resurrected
at some point.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1235313002
Cr-Commit-Position: refs/heads/master@{#29777}
Prior to this patch, we enter a global debug mode whenever a break point
is set. By entering this mode, all code is deoptimized and activated
frames are recompiled and redirected to newly compiled debug code.
After this patch, we only deoptimize/redirect for functions we want to
debug. Trigger for this is Debug::EnsureDebugInfo, and having DebugInfo
object attached to the SFI prevents optimization/inlining.
The result is that we can have optimized code for functions without break
points alongside functions that do have break points, which are not
optimized.
R=mstarzinger@chromium.org, ulan@chromium.org
BUG=v8:4132
LOG=Y
Review URL: https://codereview.chromium.org/1233073005
Cr-Commit-Position: refs/heads/master@{#29758}
Additionally, push the allocation site or undefined independently of creating a memento to preserve a fixed size for the construct frames.
BUG=
Review URL: https://codereview.chromium.org/1239593003
Cr-Commit-Position: refs/heads/master@{#29719}
This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
LOG=Y
BUG=v8:4124
Committed: https://crrev.com/e5ed3bee99807c502fa7d7a367ec401e16d3f773
Cr-Commit-Position: refs/heads/master@{#29689}
Review URL: https://codereview.chromium.org/1219943002
Cr-Commit-Position: refs/heads/master@{#29712}
Improved checking target ranges for J and JAL instructions.
Adapted disassembler test for J and JAL instructions.
TEST=cctest/test-disasm-mips[64]
BUG=
Review URL: https://codereview.chromium.org/1237083003
Cr-Commit-Position: refs/heads/master@{#29693}
These were added when I thought they would be useful in Blink, but as
it turned out they were not. They could likely be deleted immediately,
but to play it safe I'll go through the usual deprecation process.
Review URL: https://codereview.chromium.org/1236263004
Cr-Commit-Position: refs/heads/master@{#29690}
This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
LOG=Y
BUG=v8:4124
Review URL: https://codereview.chromium.org/1219943002
Cr-Commit-Position: refs/heads/master@{#29689}
By not having to patch the return sequence (we patch the debug
break slot right before it), we don't overwrite it and therefore
don't have to keep the original copy of the code around.
R=ulan@chromium.org
BUG=v8:4269
LOG=N
Review URL: https://codereview.chromium.org/1234833003
Cr-Commit-Position: refs/heads/master@{#29672}
For destructuring bind, the parser needs to complain about things
which are inappropriate to have on the left-hand side.
Previously, regexp literals and template literals were let through
the parser inappropriately. This patch turns those into errors.
This patch also fixes off-by-one errors in reporting the location
of this type of error for strings and numbers. Before the patch,
the error would look like:
d8> var {x: 3} = {x: 4}
(d8):1: SyntaxError: Unexpected number
var {x: 3} = {x: 4}
^
SyntaxError: Unexpected number
And with the patch, the error is
d8> var {x: 3} = {x: 4}
(d8):1: SyntaxError: Unexpected number
var {x: 3} = {x: 4}
^
SyntaxError: Unexpected number
R=rossberg
Review URL: https://codereview.chromium.org/1236803003
Cr-Commit-Position: refs/heads/master@{#29661}
The CL addes convenienve method that allows to write code like the following
v8::Local<v8::Object> local = v8::Local<v8::Object>::New(global, isolate);
in a more readable way:
v8::Local<v8::Object> local = global.Get(isolate);
There is already v8::Eternal::Get that does similar thing.
BUG=None
LOG=Y
Review URL: https://codereview.chromium.org/1237603003
Cr-Commit-Position: refs/heads/master@{#29616}
Until now, TF-generated code stubs piggy-backed off of the builtin
context. Since generation of code stubs is lazy, stubs generated at
different times in different native contexts would contain embedded
pointers different builtin contexts, leading to cross-context references
and memory leaks.
After this CL, all TF-generated code stubs are generated inside a
internal thinned-out, native context that lives solely for the
purpose of hosting generated code stubs.
Review URL: https://codereview.chromium.org/1213203007
Cr-Commit-Position: refs/heads/master@{#29593}
Note that there are currently no objects that require a pre-allocated
properties backing store, all such slots are in-object properties from
the begining. Hence {unused + pre_allocated - inobject == 0} holds.
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/1226203011
Cr-Commit-Position: refs/heads/master@{#29590}
For now it uses a pretty slow path for accessing strings by wrapping it into a new temporary wrapper.
BUG=v8:4042, v8:3088
LOG=y
Review URL: https://codereview.chromium.org/1221303019
Cr-Commit-Position: refs/heads/master@{#29576}
EnumtSet has been deprecated for quite some time, and replaced with the
more general and type safe base::Flags template class.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1229233002
Cr-Commit-Position: refs/heads/master@{#29564}
Break point at calls are currently set via IC. To change this, we
need to set debug break slots instead. We also need to distinguish
those debug break slots as calls to support step-in.
To implement this, we add a data field to debug break reloc info to
indicate non-call debug breaks or in case of call debug breaks, the
number of arguments. We can later use this to find the callee on the
evaluation stack in Debug::PrepareStep.
BUG=v8:4269
R=ulan@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1222093007
Cr-Commit-Position: refs/heads/master@{#29561}
This basically means that we must not use the b(Label*) version here,
but the b(int) version instead to jump over the constant pool.
BUG=v8:4292
LOG=y
Review URL: https://codereview.chromium.org/1224243002
Cr-Commit-Position: refs/heads/master@{#29552}
The b, bl and blx methods that take labels basically ignore the constant
pool check and just block the constant pool for the next instruction.
This way a long enough sequence of those instructions will block can
potentially block the constant pool emission for too long.
BUG=v8:4292
LOG=y
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1223093004
Cr-Commit-Position: refs/heads/master@{#29550}
- Add a TurboFanIC class, derived from TurboFanCodeStub, that
automatically distinguishes between versions of the IC called from
optimized and unoptimized code.
- Add appropriate InterfaceDescriptors for both the versions of the
stub called from unoptimized and optimized code
- Change the MathFloor TF stub generator to output either the
for-optimized or for-unoptimized version based on the minor_key
parameter.
Committed: https://crrev.com/8f13b655b8a10dae2116dd18b32f09337bb2d410
Cr-Commit-Position: refs/heads/master@{#29534}
Review URL: https://codereview.chromium.org/1225943002
Cr-Commit-Position: refs/heads/master@{#29539}
Reason for revert:
Failure on compiling runtime.js on windows
Original issue's description:
> Add unoptimized/optimized variants of MathFloor TF code stub
>
> - Add a TurboFanIC class, derived from TurboFanCodeStub, that
> automatically distinguishes between versions of the IC called from
> optimized and unoptimized code.
> - Add appropriate InterfaceDescriptors for both the versions of the
> stub called from unoptimized and optimized code
> - Change the MathFloor TF stub generator to output either the
> for-optimized or for-unoptimized version based on the minor_key
> parameter.
>
> Committed: https://crrev.com/8f13b655b8a10dae2116dd18b32f09337bb2d410
> Cr-Commit-Position: refs/heads/master@{#29534}
TBR=mvstanton@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1220783006
Cr-Commit-Position: refs/heads/master@{#29535}
- Add a TurboFanIC class, derived from TurboFanCodeStub, that
automatically distinguishes between versions of the IC called from
optimized and unoptimized code.
- Add appropriate InterfaceDescriptors for both the versions of the
stub called from unoptimized and optimized code
- Change the MathFloor TF stub generator to output either the
for-optimized or for-unoptimized version based on the minor_key
parameter.
Review URL: https://codereview.chromium.org/1225943002
Cr-Commit-Position: refs/heads/master@{#29534}
We actually need round to zero truncation to implement the counterpart
of LDoubleToI in TurboFan, which tries to convert a double to an integer
as required for keyed load/store optimizations.
Drive-by-cleanup: Reduce some code duplication in the InstructionSelector
implementations.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1225993002
Cr-Commit-Position: refs/heads/master@{#29527}
The RawMachineAssembler will be used to build the interpreter, so it needs
to move back to src/compiler.
This reverts commit b5b00cc031.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1221303014
Cr-Commit-Position: refs/heads/master@{#29519}
Remove the context specialization hack from the AstGraphBuilder, and
properly specialize to the function context in the context specialization.
And replace the correct context in the JSInliner.
R=mstarzinger@chromium.org
BUG=v8:4273
LOG=n
Review URL: https://codereview.chromium.org/1218873005
Cr-Commit-Position: refs/heads/master@{#29493}
We have to reland these two commits at once, because the first breaks
some asm.js benchmarks without the second. The change was reverted
because of bogus checks in the verifier, which will not work in the
presence of OSR (and where hidden because of the type back propagation
hack in OSR so far). Original messages are below:
[turbofan] Add new JSFrameSpecialization reducer.
The JSFrameSpecialization specializes an OSR graph to the current
unoptimized frame on which we will perform the on-stack replacement.
This is used for asm.js functions, where we cannot reuse the OSR
code object anyway because of context specialization, and so we could as
well specialize to the max instead.
It works by replacing all OsrValues in the graph with their values
in the JavaScriptFrame.
The idea is that using this trick we get better performance without
doing the unsound backpropagation of types to OsrValues later. This
is the first step towards fixing OSR for TurboFan.
[turbofan] Perform OSR deconstruction early and remove type propagation.
This way we don't have to deal with dead pre-OSR code in the graph
and risk optimizing the wrong code, especially we don't make
optimistic assumptions in the dead code that leaks into the OSR code
(i.e. deopt guards are in dead code, but the types propagate to OSR
code via the OsrValue type back propagation).
BUG=v8:4273
LOG=n
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1226673005
Cr-Commit-Position: refs/heads/master@{#29486}
`WriteUtf16Slow` should not assume that the output buffer has enough
bytes to hold both words of surrogate pair. It should pass the number of
remaining bytes to the `Utf8::ValueOf` instead, just as we already do in
`Utf8DecoderBase::Reset`. Otherwise it will attempt to write the trail
uint16_t past the buffer boundary, leading to memory corruption and
possible crash.
Originally reported by: Kris Reeves <kris.re@bbhmedia.com>
BUG=v8:4274
R=danno
R=svenpanne
LOG=y
Review URL: https://codereview.chromium.org/1226493003
Cr-Commit-Position: refs/heads/master@{#29485}
This way we don't have to deal with dead pre-OSR code in the graph and
risk optimizing the wrong code, especially we don't make optimistic
assumptions in the dead code that leaks into the OSR code (i.e. deopt
guards are in dead code, but the types propagate to OSR code via the
OsrValue type back propagation).
BUG=v8:4273
LOG=n
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1215333005
Cr-Commit-Position: refs/heads/master@{#29478}
Currently we lower shifts directly to machine operators, and add an
appropriate Word32And to implement the & 0x1F operation on the right
hand side required by the specification. However for Word32And we assume
Int32 in simplified lowering, which is basically changes the right hand
side bit interpretation for the shifts from Uint32 to Int32, which is
obviously wrong. So now we represent that explicitly by proper
simplified operators for the shifts, which are lowered to machine in
simplified lowering.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1213803008
Cr-Commit-Position: refs/heads/master@{#29465}
This is an adaptation of test-profile-generator/BailoutReason to when
try-catch statements are optimizable. They will no longer cause any
bailout reason to be reported.
R=yangguo@chromium.org
TEST=cctest/test-profile-generator/BailoutReason
Review URL: https://codereview.chromium.org/1213113007
Cr-Commit-Position: refs/heads/master@{#29440}
The only right way to enable access checks is to install access check callbacks on an object template via v8::ObjectTemplate::SetAccessCheckCallbacks(). It does not make sense to enable access checks on an arbitrary object.
Review URL: https://codereview.chromium.org/1217893012
Cr-Commit-Position: refs/heads/master@{#29439}
Disabling rsqrt and recip for mips32r1 in assembler, disassembler and simulator
Review URL: https://codereview.chromium.org/1221663006
Cr-Commit-Position: refs/heads/master@{#29425}
This change changes bootstrapping semantics for intercepted global objects. Unlike before, we'll now also call into the interceptor during bootstrapping. This affects properties loaded from within the runtime, such as global.Array and global.Symbol. The embedder will need to make sure that those values are the expected values during bootstrapping.
BUG=chromium:505998
LOG=n
Review URL: https://codereview.chromium.org/1220813005
Cr-Commit-Position: refs/heads/master@{#29414}
This change makes possible to save and restore the FP registers
in the Prologue and Return parts for the CallAddress kind functions.
TEST=test-simplified-lowering/RunNumberDivide_2_TruncatingToUint32,
test-simplified-lowering/RunNumberMultiply_TruncatingToUint32
Review URL: https://codereview.chromium.org/1191513003
Cr-Commit-Position: refs/heads/master@{#29378}
The deoptimizer (and probably various other places) cannot deal properly
with recursive function inlining, so we disallow it in TurboFan as well.
We might want to reconsider that decision at some point in the future.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1211243007
Cr-Commit-Position: refs/heads/master@{#29374}
This has become necessary as we have more experimental natives
that run after deserializing from the snapshot.
R=hpayer@chromium.org
BUG=v8:4200
LOG=N
Review URL: https://codereview.chromium.org/1218973002
Cr-Commit-Position: refs/heads/master@{#29367}
This optimization never triggers currently, and is inherently native
context dependent for no real reason (for example it will not properly
detect those constructors in the case of cross native context inlining),
plus it is slow and awkward. In case we really need this functionality
at some point, we should find a way to make it work with the builtin
function id mechanism that is already in place to match other builtins.
R=jarin@chromium.org,rossberg@chromium.org
Review URL: https://codereview.chromium.org/1221683006
Cr-Commit-Position: refs/heads/master@{#29365}
The failure was been triggered by turning on --harmony-arrays,
maybe because code size was increased or code was added later
in the bootstrap process. Because it doesn't look like a bug
in anything guarded by --harmony-arrays directly, I'd suggest
shipping the flag and disabling the test on the architectures
where it's been observed to fail. It's already disabled on arm64
and this patch disables it on mips64 as well.
BUG=v8:4200
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/1212963004
Cr-Commit-Position: refs/heads/master@{#29361}
This allows context-independent code generated by TurboFan to be cached
in the optimized code map and reused across native contexts. Note that
currently this cache is still flushed at GC time.
R=bmeurer@chromium.org,mvstanton@chromium.org
TEST=cctest/test-compiler/OptimizedCodeSharing
Review URL: https://codereview.chromium.org/1208013002
Cr-Commit-Position: refs/heads/master@{#29313}
If we do not clear next links during serialization, the
serializer would simply follow those links and serialize
arbitrary objects held by weak cells. This breaks the
invariant in the code serializer, which crashes if it
sees context-dependent objects.
R=ulan@chromium.org
BUG=chromium:503552
LOG=Y
Review URL: https://codereview.chromium.org/1203973002
Cr-Commit-Position: refs/heads/master@{#29255}
This fixes a slight inconsistency in the InstructionSelector that
basically disabled the optimization for things like ObjectIsSmi.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1206773002
Cr-Commit-Position: refs/heads/master@{#29250}
- Thread Type::FunctionType through stubs and the TF pipeline.
- Augment Typer to decorate parameter nodes with types from
a Type::FunctionType associated with interface descriptors.
- Factor interface descriptors into platform-specific and
platform-independent components so that all descriptors share
a common Type::FunctionType for all platforms.
Review URL: https://codereview.chromium.org/1197703002
Cr-Commit-Position: refs/heads/master@{#29248}
Speculative revert in the hopes of fixing serializer crashes seen in canary.
This reverts commit c166945083, as well as
followup change "Do not look for existing shared function info when compiling a new script."
(commit 7c43967bb7).
BUG=chromium:503552,v8:4132
TBR=yangguo@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1207583002
Cr-Commit-Position: refs/heads/master@{#29241}
Map: get, set, has, delete, clear
Set: add, has, delete, clear
All except clear are implemented as calls into collection.js.
Note that some of these shadow methods of v8::Object. It's unclear
how confusing that's going to be: on the one hand, it seems likely
that most operations you would want to do on a Map or Set are these.
On the other, generic code could get confused if it somehow gets
ahold of a variable that happens to be C++-typed as a v8::Map or v8::Set.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1204623002
Cr-Commit-Position: refs/heads/master@{#29237}
This is a precursor to using specialized LoadIC and StoreIC stubs for
global variable access. It also removes the need to keep track of the
global object in the type system, hence freeing up one bit.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1205473004
Cr-Commit-Position: refs/heads/master@{#29231}
This makes usage of the MachineOperatorBuilder more robust, as it will be
an error to request an unsupported operator.
Along the way, I noticed that all 7 platforms support Float32Abs and
Float64Abs. Should make them non-optional in another CL?
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1128133003
Cr-Commit-Position: refs/heads/master@{#29223}
This also threads through the parameter count and local count to the instruction selector. This will be later used to allow merging of various StateValues vector (and prepare for differential encoding which will not distinguish between parameters, locals and expression stack).
BUG=
Review URL: https://codereview.chromium.org/1191243003
Cr-Commit-Position: refs/heads/master@{#29214}
Turning the --harmony-array flag on has been delayed behind
unrelated test failures. Now that those tests are disabled,
land the changes.
This patch fixes WebKit tests based on the new change.
R=adamk
LOG=Y
BUG=v8:3578
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1199113003
Cr-Commit-Position: refs/heads/master@{#29209}
Reason:
Regressions in various benchmarks.
Revert "Revert of Revert of [strong] Implement strong mode restrictions on property access (patchset #1 id:1 of https://codereview.chromium.org/1189153002/)"
This reverts commit 41405c0470.
Revert "X87: Revert of Revert of [strong] Implement strong mode restrictions on property access."
This reverts commit 48de5f4d6b.
Revert "Fix overlapping KeyedLoadIC bitfield."
This reverts commit 4e6c956abf.
Revert "MIPS64: Fix 'Revert of Revert of [strong] Implement strong mode restrictions on property access'."
This reverts commit 74f97b0d2a.
BUG=
Review URL: https://codereview.chromium.org/1199493002
Cr-Commit-Position: refs/heads/master@{#29166}
Each Script object now keeps a WeakFixedArray of SharedFunctionInfo
objects created from this script.
This way, when compiling a function, we do not create duplicate shared
function info objects when recompiling with either compiler.
This fixes a class of issues in the debugger, where we set break points
on one shared function info, but functions from duplicate shared function
infos are not affected.
LOG=N
BUG=v8:4132
Review URL: https://codereview.chromium.org/1183733006
Cr-Commit-Position: refs/heads/master@{#29151}
The three different concerns that the ControlReducer used to deal with
are now properly separated into
a.) DeadCodeElimination, which is a regular AdvancedReducer, that
propagates Dead via control edges,
b.) CommonOperatorReducer, which does strength reduction on common
operators (i.e. Branch, Phi, and friends), and
c.) GraphTrimming, which removes dead->live edges from the graph.
This will make it possible to run the DeadCodeElimination together with
other passes that actually introduce Dead nodes, i.e. typed lowering;
and it opens the door for general inlining without two stage fix point
iteration.
To make the DeadCodeElimination easier and more uniform, we basically
reverted the introduction of DeadValue and DeadEffect, and changed the
Dead operator to produce control, value and effect. Note however that
this is not a requirement, but merely a way to make dead propagation
easier and more uniform. We could always go back and decide to have
different Dead operators if some other change requires that.
Note that there are several additional opportunities for cleanup now,
i.e. OSR deconstruction could be a regular reducer now, and we don't
need to use TheHole as dead value marker in the GraphReducer. And we can
actually run the dead code elimination together with the other passes
instead of using separate passes over the graph. We will do this in
follow up CLs.
R=jarin@chromium.org, mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1193833002
Cr-Commit-Position: refs/heads/master@{#29146}
Implements the strong mode proposal's restrictions on property access.
To be fully explored in a followup: proxies, interceptors, access checks, load from super
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1168093002
Cr-Commit-Position: refs/heads/master@{#29109}
This turns the CommonOperatorReducer into an AdvancedReducer and makes
it independent of JSGraph (which was used only because it was convienent),
and let's the CommonOperatorReducer run together with the ControlReducer.
The ControlReducer is still not able to run together with other reducers,
but we're getting closer. The plan is to split the ControlReducer into
two parts: The dead code elimination part and the common operator
reduction part. This separation will help to avoid tricky bugs in the
future and should make testing a *lot* easier.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1192063002
Cr-Commit-Position: refs/heads/master@{#29105}
The condition of a Branch or Select can never be a NumberConstant,
because the resulting graph would be invalid, so we don't need to
optimize this case. It can only ever be a tagged boolean or an untagged
bit.
Drive-by-fix: Test the interesting cases in the unit tests instead.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1195443004
Cr-Commit-Position: refs/heads/master@{#29089}
Up until now that was still mixed with control reduction in the
ControlReducer. This separation allows us to remove the horrible
Reducer::Finish hack and also do graph trimming at more appropriate
places in the pipeline (i.e. trim dead nodes after generic lowering,
which can also make nodes dead).
R=jarin@chromium.org,mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1188433010
Cr-Commit-Position: refs/heads/master@{#29077}
The remaining uses need some non-mechanical work:
* non-standard-layout type, probably due to mixed access control
* extended field designators
Review URL: https://codereview.chromium.org/1173343006
Cr-Commit-Position: refs/heads/master@{#29071}
This ensures there is a lazy bailout point at the entry of every
exception handler so that deoptimized code is not re-entered through
caught exceptions.
R=jarin@chromium.org
TEST=cctest/test-run-deopt/DeoptExceptionHandler
Review URL: https://codereview.chromium.org/1173253004
Cr-Commit-Position: refs/heads/master@{#29061}
This patch includes the following changes.
1, Enable the turbofan backend support for X87 platform. It depends on previous CL: 3fdfebd26.
2, Enable the test cases which are disabled because turbofan for X87 was not enabled.
BUG=v8:4135
LOG=N
Review URL: https://codereview.chromium.org/1179763004
Cr-Commit-Position: refs/heads/master@{#29049}
frame->GetExpression always returns the same function. We should iterate through expression stack when we use Function.call.apply for finding actual target.
LOG=N
BUG=chromium:499479
R=yurys@chromium.org,yangguo@chromium.org
Review URL: https://codereview.chromium.org/1182703003
Cr-Commit-Position: refs/heads/master@{#29048}
This invariant will save us some head ache.
The changes to test-debug/DebugStub is due to the fact that it abuses
the ability to set break points in code that has no debug break slots.
This is now no longer possible.
R=ulan@chromium.org
BUG=v8:4132
LOG=N
Review URL: https://codereview.chromium.org/1181013007
Cr-Commit-Position: refs/heads/master@{#29038}
Reasons:
- It is not used.
- It complicates code in GC.
BUG=chromium:499713
LOG=NO
Review URL: https://codereview.chromium.org/1184723002
Cr-Commit-Position: refs/heads/master@{#29027}
Up until now we used int32_t for NodeId, but that was not ideal because
negative values are invalid for NodeId and we use it as an array index
for example in the NodeMarker class, where C++ compilers on x64 have to
generate code that does proper sign extension for the indices, which is
completely unnecessary.
R=svenpanne@chromium.org
Review URL: https://codereview.chromium.org/1178403004
Cr-Commit-Position: refs/heads/master@{#28997}
Port cdc43bc5fd
Original commit message:
Enable clang's shorten-64-to-32 warning flag on ARM64, and fix the warnings
that arise.
BUG=
Review URL: https://codereview.chromium.org/1133163005
Cr-Commit-Position: refs/heads/master@{#28990}
Reason for revert:
Blocks revert of https://codereview.chromium.org/1175973002
Original issue's description:
> Replace SetObjectProperty / DefineObjectProperty with less powerful alternatives where relevant.
>
> @yangguo: please look at the debugger part of the CL.
> @ishell: please look at the rest.
>
> Additionally:
> - Ensure the LookupIterator for named properties does not accidentally get indexes in.
> - Fix the return value for typed array assignments to be the incoming value.
>
> BUG=v8:4137
> LOG=n
>
> Committed: https://crrev.com/15aa811f8fe2708a757c3b53ca89db736aa8b222
> Cr-Commit-Position: refs/heads/master@{#28954}
TBR=yangguo@chromium.org,verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4137
Review URL: https://codereview.chromium.org/1181733002
Cr-Commit-Position: refs/heads/master@{#28957}
@yangguo: please look at the debugger part of the CL.
@ishell: please look at the rest.
Additionally:
- Ensure the LookupIterator for named properties does not accidentally get indexes in.
- Fix the return value for typed array assignments to be the incoming value.
BUG=v8:4137
LOG=n
Review URL: https://codereview.chromium.org/1178503004
Cr-Commit-Position: refs/heads/master@{#28954}
The alternative of passing an object template at context creation is
unfeasible because we need a context to instantiate the template.
At the time we create the context from snapshot or bootstrap from
scratch, we would already need that template instance, leading to a
chicken-and-egg problem.
This is an alternative that is simpler and less intrusive.
R=domenic@chromium.org, jochen@chromium.org
Review URL: https://codereview.chromium.org/1182443002
Cr-Commit-Position: refs/heads/master@{#28938}
After https://codereview.chromium.org/1180433003 the code-size exceeeds
the limit for MIPS. We have some optimizations in place for MIPS64 that
will be ported back to MIPS, and will investigate other code-size
improvements so we can re-enable this test.
BUG=
Review URL: https://codereview.chromium.org/1166353005
Cr-Commit-Position: refs/heads/master@{#28913}
Frame Elider requires a sane CFG which should have such dummy end block.
BUG=
Review URL: https://codereview.chromium.org/1166293004
Cr-Commit-Position: refs/heads/master@{#28911}
On Mac for the requested minimal version (10.5) only old stl (from gcc 4.2.1) can be used so unfortunately we can't use numeric_limits<>::lowest() which were added in 874c54e05e
BUG=
TEST=cctest/test-assembler-mips64, cctest/test-assembler-mips
Review URL: https://codereview.chromium.org/1175463003
Cr-Commit-Position: refs/heads/master@{#28907}
Up until now we can only inline based on JSFunction, because of the way
the deoptimization works. With this change we will be able to inline
based on the SharedFunctionInfo and materialize the JSFunction from a
literal or a stack slot when necessary.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1169103004
Cr-Commit-Position: refs/heads/master@{#28906}
This change rewrites regexps like (ab|ac|z|ad|ae|af) into (a[b-f]|z). We can only reorder disjunctions like this for case-dependent regexps. For case-independent regexps, the disjunctions should be pre-sorted for best results.
R=yangguo@chromium.org
BUG=chromium:482998
LOG=n
Review URL: https://codereview.chromium.org/1180433003
Cr-Commit-Position: refs/heads/master@{#28902}
This adds some basic tests of the interaction between try-catch and
try-finally statements and OSR in TurboFan. The try-osr test suite
follows the structure of try-deopt closely.
R=titzer@chromium.org
TEST=mjsunit/compiler/try-osr
Review URL: https://codereview.chromium.org/1165103003
Cr-Commit-Position: refs/heads/master@{#28855}
This allows try-catch and try-finally constructs to be separately
enabled and disabled. We plan to stage try-catch support soon.
R=titzer@chromium.org
Review URL: https://codereview.chromium.org/1157863015
Cr-Commit-Position: refs/heads/master@{#28848}
Boolean "is_strong" parameters have begun to proliferate across areas where
strong mode semantics are different. This CL repurposes the existing
ObjectStrength enum as a replacement for them.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1144183004
Cr-Commit-Position: refs/heads/master@{#28839}
This allows any AdvancedReducer to remove exception projections from
graphs. This is the common case when JS-operators are being replaced
with pure values. The old NodeProperties::ReplaceWithValue is being
deprecated in favor of AdvancedReducer::ReplaceWithValue.
R=titzer@chromium.org
TEST=unittests/AdvancedReducerTest
Review URL: https://codereview.chromium.org/1168693002
Cr-Commit-Position: refs/heads/master@{#28810}
We used to only store the uses_super_property in the preparse data
logger. Let the logger use NeedsHomeObject instead.
BUG=v8:3768
LOG=N
R=wingo, adamk
Review URL: https://codereview.chromium.org/1164073003
Cr-Commit-Position: refs/heads/master@{#28806}
Before this we had 3 super related lexical bindings that got injected
into method bodies: .home_object, .this_function, and new.target.
With this change we get rid of the .home_object one in favor of using
.this_function[home_object_symbol] which allows some simplifications
throughout the code base.
BUG=v8:3768
LOG=N
R=adamk@chromium.org, wingo@igalia.com
Review URL: https://codereview.chromium.org/1154103005
Cr-Commit-Position: refs/heads/master@{#28802}
Embed constant pools within their corresponding Code
objects.
This removes support for out-of-line constant pools in favor
of the new approach -- the main advantage being that it
eliminates the need to allocate and manage separate constant
pool array objects.
Currently supported on PPC and ARM. Enabled by default on
PPC only.
This yields a 6% improvment in Octane on PPC64.
R=bmeurer@chromium.org, rmcilroy@chromium.org, michael_dawson@ca.ibm.com
BUG=chromium:478811
LOG=Y
Review URL: https://codereview.chromium.org/1162993006
Cr-Commit-Position: refs/heads/master@{#28801}
This will significantly simplify the serialization code, as well
as speeding it up (by triggering only a single allocation instead of O(size)
allocations).
BUG=chromium:478263
LOG=y
Review URL: https://codereview.chromium.org/1157843006
Cr-Commit-Position: refs/heads/master@{#28793}
Adds SIMD 128 alignment sizes and masks.
Adds support in Heap for SIMD alignments and fills.
Reworks cctest so that each test independently aligns its allocation address, rather than depending on the previous tests ending state. Adds test cases for SIMD.
LOG=N
BUG=v8:4124
Committed: https://crrev.com/4347d56a6919ae06a70e4a4a8b2f1179cf47bc7e
Cr-Commit-Position: refs/heads/master@{#28767}
Review URL: https://codereview.chromium.org/1159453004
Cr-Commit-Position: refs/heads/master@{#28771}
Reason for revert:
Breaks Linux - arm64 - sim - MSAN
TBR=jochen
Original issue's description:
> Add SIMD 128 alignment support to Heap.
> Adds SIMD 128 alignment sizes and masks.
> Adds support in Heap for SIMD alignments and fills.
> Reworks cctest so that each test independently aligns its allocation address, rather than depending on the previous tests ending state. Adds test cases for SIMD.
>
> LOG=N
> BUG=v8:4124
TBR=hpayer@chromium.org,jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
Review URL: https://codereview.chromium.org/1169453003
Cr-Commit-Position: refs/heads/master@{#28768}
Adds SIMD 128 alignment sizes and masks.
Adds support in Heap for SIMD alignments and fills.
Reworks cctest so that each test independently aligns its allocation address, rather than depending on the previous tests ending state. Adds test cases for SIMD.
LOG=N
BUG=v8:4124
Review URL: https://codereview.chromium.org/1159453004
Cr-Commit-Position: refs/heads/master@{#28767}
This also fixes issues with
- kMaxUint32 being a valid length but not index cornercases
- exotic integer objects masking "exotic indexes" even though its in the prototype chain
- concating of holey sloppy arguments
BUG=v8:4137
LOG=n
Review URL: https://codereview.chromium.org/1159433003
Cr-Commit-Position: refs/heads/master@{#28754}
Unfortunately StringAdd is not pure in V8 because we might throw an
exception if the resulting string length is outside the valid bounds, so
there's no point in having a simplified StringAdd operator.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1164743002
Cr-Commit-Position: refs/heads/master@{#28747}
The Map and Set maps get overwritten when collection.js executes, so in
a nosnap build we have to wait until it runs before we grab the maps.
To facilitate that, store the functions in the native context as well.
Review URL: https://codereview.chromium.org/1161363002
Cr-Commit-Position: refs/heads/master@{#28743}
When compiling on a laptop I like to concatenate the small test files.
This makes a big difference to compile times. These changes make that
easier.
R=ulan@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1163803002
Cr-Commit-Position: refs/heads/master@{#28742}
Implements the strong mode proposal's restrictions on the behaviour of the
delete operator for strong objects.
Setting the strong bit is still wip, so this change will only affect those
objects that have the bit correctly set. The tests reflect this, and will be
expanded as more objects can be marked as strong.
Attempt 2, last version did not work with API.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1156573002
Cr-Commit-Position: refs/heads/master@{#28724}
Moves alignment fill calculations into two static Heap methods.
Adds a Heap method to handle the complex case where filler is potentially needed before and after a heap object.
Makes DoubleAlignForDeserialization explicitly fill after an already
aligned object.
LOG=N
BUG=v8:4124
Committed: https://crrev.com/fcfb080eb9a637f0ae066bed4c45095e60df8a84
Cr-Commit-Position: refs/heads/master@{#28687}
Review URL: https://codereview.chromium.org/1150593003
Cr-Commit-Position: refs/heads/master@{#28702}
Reason for revert:
Breaks mjsunit, webkit, mozilla, benchmarks.
TBR=hpayer@chromium.org
Original issue's description:
> Clean up aligned allocation code in preparation for SIMD alignments.
>
> Moves alignment fill calculations into two static Heap methods.
> Adds a Heap method to handle the complex case where filler is potentially needed before and after a heap object.
> Makes DoubleAlignForDeserialization explicitly fill after an already
> aligned object.
>
> LOG=N
> BUG=v8:4124
>
> Committed: https://crrev.com/fcfb080eb9a637f0ae066bed4c45095e60df8a84
> Cr-Commit-Position: refs/heads/master@{#28687}
TBR=hpayer@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
Review URL: https://codereview.chromium.org/1159123002
Cr-Commit-Position: refs/heads/master@{#28688}
Moves alignment fill calculations into two static Heap methods.
Adds a Heap method to handle the complex case where filler is potentially needed before and after a heap object.
Makes DoubleAlignForDeserialization explicitly fill after an already
aligned object.
LOG=N
BUG=v8:4124
Review URL: https://codereview.chromium.org/1150593003
Cr-Commit-Position: refs/heads/master@{#28687}
This simplifies inlining, in that we only need to update uses of Start
and inputs of End instead of walking the whole inlinee to update all
outer frame states.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1146403008
Cr-Commit-Position: refs/heads/master@{#28649}
When we enter a method that needs access to the [[HomeObject]]
we allocate a local variable `.home_object` and assign it the
value from the [[HomeObject]] private symbol. Something along
the lines of:
method() {
var .home_object = %ThisFunction()[home_object_symbol];
...
}
BUG=v8:3867, v8:4031
LOG=N
Review URL: https://codereview.chromium.org/1135243004
Cr-Commit-Position: refs/heads/master@{#28644}
These are similar to the Map/Set constructors when called with an array,
except that they are guaranteed to be side-effect free if called with
a packed array.
This will be useful in implementing structured clone which, as
specified in HTML, speaks in terms of the internal [[MapData]]
and [[SetData]] slots without going through the exposed iteration
ES semantics.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1155893003
Cr-Commit-Position: refs/heads/master@{#28642}
These return arrays representing the current contents of the given
Map/Set. They are similar to what would be returned by the JS code:
Array.from(collection)
except that they are guaranteed side-effect free.
This will be useful in implementing structured clone which, as
specified in HTML, speaks in terms of the internal [[MapData]]
and [[SetData]] slots without going through the exposed iteration
ES semantics.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1148383007
Cr-Commit-Position: refs/heads/master@{#28640}
Only supports constructing new objects and returning size.
Followup patch will need to add ability to retrieve and
set contents in order to support structured clone.
Also removes a bunch of outdated "experimental" markers from v8.h.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1157453002
Cr-Commit-Position: refs/heads/master@{#28637}
This way we don't need to connect (potentially) non-terminating loops
later during control reduction, which saves one forward pass over the
control graph. Long term we will move the trimming functionality of
the control reducer to the GraphReducer, and get rid of the Finish
method again.
As a bonus, this change also properly rewires Terminate, Throw and
Deoptimize during inlining.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1155683004
Cr-Commit-Position: refs/heads/master@{#28625}
* Hash code is now just done with a private own symbol instead of the hidden string, which predates symbols.
* In the long run we should do all hidden properties this way and get rid of the
hidden magic 0-length string with the zero hash code. The advantages include
less complexity and being able to do things from JS in a natural way.
* Initially, the performance of weak set regressed, because it's a little harder
to do the lookup in C++. Instead of heroics in C++ to make things faster I
moved some functionality into JS and got the performance back. JS is supposed to be good at looking up named properties on objects.
* This also changes hash codes of Smis so that they are always Smis.
Performance figures are in the comments to the code review. Summary: Most of js-perf-test/Collections is neutral. Set and Map with object keys are 40-50% better. WeakMap is -5% and WeakSet is +9%. After the measurements, I fixed global proxies, which cost 1% on most tests and 5% on the weak ones :-(.
In the code review comments is a patch with an example of the heroics we could do in C++ to make lookup faster (I hope we don't have to do this. Instead of checking for the property, then doing a new lookup to insert it, we could do one lookup and handle the addition immediately). With the current benchmarks above this buys us nothing, but if we go back to doing more lookups in C++ instead of in stubs and JS then it's a win.
In a similar vein we could give the magic zero hash code to the hash code
symbol. Then when we look up the hash code we would sometimes see the table
with all the hidden properties. This dual use of the field for either the hash
code or the table with all hidden properties and the hash code is rather ugly,
and this CL gets rid of it. I'd be loath to bring it back. On the benchmarks quoted above it's slightly slower than moving the hash code lookup to JS like in this CL.
One worry is that the benchmark results above are more monomorphic than real
world code, so may be overstating the performance benefits of moving to JS. I
think this is part of a general issue we have with handling polymorphic code in
JS and any solutions there will benefit this solution, which boils down to
regular property access. Any improvement there will lift all boats.
R=adamk@chromium.org, verwaest@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1149863005
Cr-Commit-Position: refs/heads/master@{#28622}
This simplifies the handling of the End node. Based on this CL we will
finally fix terminating every loop from the beginning (via Terminate
nodes) and fix inlining of Throw, Deoptimize and Terminate.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1157023002
Cr-Commit-Position: refs/heads/master@{#28620}
Implement assembler, disassembler tests for all instructions for mips32 and mips64. Additionally, add missing single precision float instructions for r2 and r6 architecture variants in assembler, simulator and disassembler with corresponding tests.
Review URL: https://codereview.chromium.org/1145223002
Cr-Commit-Position: refs/heads/master@{#28595}
This adds a new external type (v8::SharedArrayBuffer) that uses a JSArrayBuffer
under the hood. It can be distinguished from an ArrayBuffer by the newly-added
is_shared() bit.
Currently there is no difference in functionality between a SharedArrayBuffer
and an ArrayBuffer. However, a future CL will add the Atomics API, which is
only available on an SharedArrayBuffer. All non-atomic accesses are identical
to ArrayBuffer accesses.
LOG=N
BUG=
Review URL: https://codereview.chromium.org/1136553006
Cr-Commit-Position: refs/heads/master@{#28594}
Deleting an in-bounds character index from a String object should always return
false.
BUG=
LOG=N
Review URL: https://codereview.chromium.org/1153673003
Cr-Commit-Position: refs/heads/master@{#28592}
Reason for revert:
breaks build
Original issue's description:
> Implement SharedArrayBuffer.
>
> This adds a new external type (v8::SharedArrayBuffer) that uses a JSArrayBuffer under the hood. It can be distinguished from an ArrayBuffer by the newly-added is_shared() bit.
>
> Currently there is no difference in functionality between a SharedArrayBuffer and an ArrayBuffer. However, a future CL will add the Atomics API, which is only available on an SharedArrayBuffer. All non-atomic accesses are identical to ArrayBuffer accesses.
>
> BUG=
>
> Committed: https://crrev.com/57170bff7baf341c666252a7f6a49e9c08d51263
> Cr-Commit-Position: refs/heads/master@{#28588}
TBR=jarin@chromium.org,jochen@chromium.org,binji@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1149203003
Cr-Commit-Position: refs/heads/master@{#28589}
This adds a new external type (v8::SharedArrayBuffer) that uses a JSArrayBuffer under the hood. It can be distinguished from an ArrayBuffer by the newly-added is_shared() bit.
Currently there is no difference in functionality between a SharedArrayBuffer and an ArrayBuffer. However, a future CL will add the Atomics API, which is only available on an SharedArrayBuffer. All non-atomic accesses are identical to ArrayBuffer accesses.
BUG=
Review URL: https://codereview.chromium.org/1136553006
Cr-Commit-Position: refs/heads/master@{#28588}
This reduces the storage per-Node storage from 7 words to 6 and per-edge
storage from 6 words to 4.
On average this is about 10%-15% space savings over the whole graph.
Remove the use of std::deque as the out-of-line storage for inputs.
Reduce size of Use links and use pointer arithmetic to find Node
from Use.
R=mstarzinger@chromium.org,jarin@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1150923003
Cr-Commit-Position: refs/heads/master@{#28583}
This just delegates to SharedFunctionInfo::optimization_disabled and
was primarily used for assertions. Removing it due to misleading name
because already optimized functions reported being "non-optimizable".
This relands commit 181d7b8597.
R=titzer@chromium.org
Review URL: https://codereview.chromium.org/1146423002
Cr-Commit-Position: refs/heads/master@{#28577}
