The path used by that option only comes into play when default parameters
are allowed but destructuring assignment is disallowed. Removing it
allows the removal of one implementation of ParseExpression, and makes
it clearer which code will be dead once all the destructuring flags
are removed.
Also made the |flags| param strongly typed instead of an int.
Review URL: https://codereview.chromium.org/1691653002
Cr-Commit-Position: refs/heads/master@{#33918}
This allows the helper to avoid write barriers while copying, speeding up Object.keys by 5-10%.
BUG=
Review URL: https://codereview.chromium.org/1690953002
Cr-Commit-Position: refs/heads/master@{#33916}
Several minor cleanups to error handling in expression parsing:
- Remove duplication of binding and assignment error reporting.
- RecordBindingPatternError calls are changed to shorter BindingPatternUnexpectedToken
calls where possible.
- No-op error recording calls are removed.
Review URL: https://codereview.chromium.org/1688833004
Cr-Commit-Position: refs/heads/master@{#33915}
This fact is depended upon by, at least, Parser::ParseLazy, and quite
likely by other code. There was already code in %FunctionSetName
enforcing this invariant. This patch adds similar code to
Factory::NewSharedFunctionInfo().
BUG=v8:4659
LOG=n
Review URL: https://codereview.chromium.org/1686193003
Cr-Commit-Position: refs/heads/master@{#33914}
Fixes a register-clobbering problem. The Branch() instruction can overwrite the 'at' register, so it can't be used as scratch in Allocate(). Added DCHECK to avoid this in the future.
BUG=
Review URL: https://codereview.chromium.org/1687173006
Cr-Commit-Position: refs/heads/master@{#33912}
Instead of doing a full function body traversal we collect return expressions and mark them after function parsing.
And since we rewrite do-expressions so that the result is explicitly assigned to a result variable the statements marking will never hit so I removed it from the AST.
BUG=v8:4698
LOG=N
Review URL: https://codereview.chromium.org/1693523002
Cr-Commit-Position: refs/heads/master@{#33911}
Apparently, this BytecodeArrayIterator method was missed during the
previous refactor. No other (collateral) change was done.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1691433002
Cr-Commit-Position: refs/heads/master@{#33909}
- Remove unused methods that we should never actually use like SetArea() or
set_size().
- Live bytes are now reported with --trace-live-bytes and not gc-verbose.
BUG=chromium:581076
LOG=N
Review URL: https://codereview.chromium.org/1686413002
Cr-Commit-Position: refs/heads/master@{#33908}
This replaces the bytecode in question with a runtime call within the
bytecode stream. The tradeoff is to safe one bytecode opcode for more
expensive encoding of lookup slot deletion.
R=rmcilroy@chromium.org
Review URL: https://codereview.chromium.org/1690913002
Cr-Commit-Position: refs/heads/master@{#33907}
This change correctly sets the {CatchPrediction} field in exception
handler tables for bytecode and optimized code. It also adds tests
independent of promise handling for this prediction, to ensure all our
backends are in sync on their prediction.
R=rmcilroy@chromium.org,yangguo@chromium.org
TEST=mjsunit/compiler/debug-catch-prediction
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1690973002
Cr-Commit-Position: refs/heads/master@{#33906}
By keeping track of the stack of counters we can properly subtract the
subcounter times and properly measure the own-time spent in each runtime
function. This is useful to get more details for builtins like HandleApiCall
which are typical top-level entries for chome which previously prevent
measurements of sub-calls to builtins/runtime functions.
BUG=
Review URL: https://codereview.chromium.org/1681943002
Cr-Commit-Position: refs/heads/master@{#33901}
Reason for revert:
[Sheriff] Breaks the tree:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20builder/builds/13892
Blamelists are wrong because of overloaded master. The trybots on this CL might have been outdated by the time of commit... Please rebase and retry.
Original issue's description:
> [Interpreter] Rename GetCountOperand to GetRegisterCountOperand.
>
> Apparently, this BytecodeArrayIterator method was missed during the
> previous refactor. No other (collateral) change was done.
>
> BUG=v8:4280
> LOG=N
>
> Committed: https://crrev.com/3781ca79f5c48b55d7f0bf6df370ec11515a1466
> Cr-Commit-Position: refs/heads/master@{#33897}
TBR=oth@chromium.org,rmcilroy@chromium.org,mstarzinger@chromium.org,ssanfilippo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4280
Review URL: https://codereview.chromium.org/1690963002
Cr-Commit-Position: refs/heads/master@{#33900}
This changes "d8" to no longer report exceptions as being "caught" when
it comes to the catch prediction mechanism in our debugger. This treats
scripts as being truly top-level when it comes to exception handling and
will allow us to properly test the catch prediction mechanism using just
mjsunit tests alone.
R=yangguo@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1691723002
Cr-Commit-Position: refs/heads/master@{#33898}
Apparently, this BytecodeArrayIterator method was missed during the
previous refactor. No other (collateral) change was done.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1691433002
Cr-Commit-Position: refs/heads/master@{#33897}
In the case of a simple fast-mode receiver without fancy properties, we
can just walk over the descriptor array to find all its initial property
names. As long as the map stays the same, we can also use that
descriptor array to figure out how to handle the properties.
This speeds up
https://github.com/kpdecker/six-speed/tree/master/tests/object-assign by
~2x.
BUG=
Review URL: https://codereview.chromium.org/1688953004
Cr-Commit-Position: refs/heads/master@{#33895}
Saves and restores the dispatch pointer during calls to enable the debugger to
switch the dispatch table used by a function during it's execution.
Also moves the accumulator and context nodes to be Variables so that they will
be properly merged across branches.
BUG=v8:4280,v8:4690
LOG=N
Review URL: https://codereview.chromium.org/1684073002
Cr-Commit-Position: refs/heads/master@{#33894}
Additionally list C++ builtins as well under --runtime_call_stats.
Let's try to keep all counters in one place, that makes it a bit
easier to maintain and especially discard unused ones.
BUG=
Committed: https://crrev.com/6bc71431995d49d4ca4a2ea9c75e5add5f345225
Cr-Commit-Position: refs/heads/master@{#33847}
Review URL: https://codereview.chromium.org/1678973002
Cr-Commit-Position: refs/heads/master@{#33893}
This removes uses of JSFunction by the (proper) deoptimizer. This will be useful
when we escape analyze JSFunction away. Unfortunately, the debugger still needs
JSFunction, so escape analysis would not work yet.
Review URL: https://codereview.chromium.org/1686183003
Cr-Commit-Position: refs/heads/master@{#33891}
Reason for revert:
failing gc-stress tests
Original issue's description:
> Reland of [counters] moving runtime counters to counter.h (patchset #1 id:1 of https://codereview.chromium.org/1681923003/ )
>
> Reason for revert:
> This CL was not the cause for the TSAN failures, the instruction-selector backend for x64 emitted a wrong compare which accidentally showed up with tsan + code moves.
> The instruction-selectors changes have been reverted with https://codereview.chromium.org/1693433002
>
> Original issue's description:
> > Revert of [counters] moving runtime counters to counter.h (patchset #1 id:1 of https://codereview.chromium.org/1678973002/ )
> >
> > Reason for revert:
> > [Sheriff] Breaks TSAN:
> > https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/7727
> >
> > Original issue's description:
> > > [counters] moving runtime counters to counter.h
> > >
> > > Additionally list C++ builtins as well under --runtime_call_stats.
> > > Let's try to keep all counters in one place, that makes it a bit
> > > easier to maintain and especially discard unused ones.
> > >
> > > BUG=
> > >
> > > Committed: https://crrev.com/6bc71431995d49d4ca4a2ea9c75e5add5f345225
> > > Cr-Commit-Position: refs/heads/master@{#33847}
> >
> > TBR=jarin@chromium.org,cbruni@chromium.org
> > # Skipping CQ checks because original CL landed less than 1 days ago.
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=
> >
> > Committed: https://crrev.com/2d669b96639517cfc33e6fc6d4c3814587bc7366
> > Cr-Commit-Position: refs/heads/master@{#33848}
>
> TBR=jarin@chromium.org,machenbach@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=
>
> Committed: https://crrev.com/ad943fe44ede22b90b871e1233334dff5ff545c3
> Cr-Commit-Position: refs/heads/master@{#33887}
TBR=jarin@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1687313002
Cr-Commit-Position: refs/heads/master@{#33889}
This is a follow-up to https://crrev.com/1671863002, adding the
capability to print the contents of the constant pool. The expected
type of the pool is taken from command line, and it's either:
* string/int/double: assume all constants have the specified type.
This way, we can emit a meaningful representation, e.g. a quoted
string for type string and so on. All the constants in the pool must
have the same type, otherwise one or more CHECK() will fail and the
program will eventually crash.
* mixed: print the InstanceType tag instead of the actual value.
This is the choice for those tests where the type of the constants in
the pool is not uniform, however only a type tag is printed, not the
actual value of the entries. SMIs are an exception, since they do not
have an InstanceType tag, so kInstanceTypeDontCare is printed instead.
In addition to that, functions Print{ExpectedSnippet,BytecodeSequence}
have been extracted with no functional change. It's just for improving
readability, since the code is becoming quite long.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1686963002
Cr-Commit-Position: refs/heads/master@{#33888}
Reason for revert:
This CL was not the cause for the TSAN failures, the instruction-selector backend for x64 emitted a wrong compare which accidentally showed up with tsan + code moves.
The instruction-selectors changes have been reverted with https://codereview.chromium.org/1693433002
Original issue's description:
> Revert of [counters] moving runtime counters to counter.h (patchset #1 id:1 of https://codereview.chromium.org/1678973002/ )
>
> Reason for revert:
> [Sheriff] Breaks TSAN:
> https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/7727
>
> Original issue's description:
> > [counters] moving runtime counters to counter.h
> >
> > Additionally list C++ builtins as well under --runtime_call_stats.
> > Let's try to keep all counters in one place, that makes it a bit
> > easier to maintain and especially discard unused ones.
> >
> > BUG=
> >
> > Committed: https://crrev.com/6bc71431995d49d4ca4a2ea9c75e5add5f345225
> > Cr-Commit-Position: refs/heads/master@{#33847}
>
> TBR=jarin@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/2d669b96639517cfc33e6fc6d4c3814587bc7366
> Cr-Commit-Position: refs/heads/master@{#33848}
TBR=jarin@chromium.org,machenbach@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=
Review URL: https://codereview.chromium.org/1688783005
Cr-Commit-Position: refs/heads/master@{#33887}
1) Update profiling counters in Full codegen.
2) Call Runtime::kTraceTailCall when tracing is on
test/mjsunit/es6/tail-call-simple.js is disabled for now, because Turbofan does not fully support TCO yet.
BUG=v8:4698
LOG=N
Review URL: https://codereview.chromium.org/1670133002
Cr-Commit-Position: refs/heads/master@{#33886}
This CL also removes tail call support made so far from Crankshaft.
BUG=v8:4698
LOG=N
Review URL: https://codereview.chromium.org/1683793004
Cr-Commit-Position: refs/heads/master@{#33885}
Reason for revert:
Code like the example given in the CL description was produced, for example, by code-stub-assembler.cc.
Reverting this, and try to fix the root cause instead.
Original issue's description:
> [turbofan] Fixes the code generation for branches on x64 when the condition is Word64Equal.
>
> Before:
>
> REX.W cmpq r9,r8
> setzl r8l
> movzxbl r8,r8
> REX.W cmpq r8,0x0
> jz 185
>
> After:
>
> REX.W cmpq r9,r8
> jnz 149
>
> Committed: https://crrev.com/75cc8352d06aada2e9131fdae793299ef73fb639
> Cr-Commit-Position: refs/heads/master@{#33784}
TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
Review URL: https://codereview.chromium.org/1693433002
Cr-Commit-Position: refs/heads/master@{#33884}
JS_FRAME_FUNCTION can be expressed using the STACK_SLOT translation.
Review URL: https://codereview.chromium.org/1688023003
Cr-Commit-Position: refs/heads/master@{#33882}
There are a bunch of places in our builtins where we use %_Arguments and
%_ArgumentsLength for no good reason, as arguments object and/or rest
parameter is as good and performant in these cases. Now the only uses
of %_Arguments and %_ArgumentsLength left are in string.js, which
requires dedicated investigation.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_dbg
R=yangguo@chromium.org
Committed: https://crrev.com/2160429fd458e3c095475e718c97f77ac90d906f
Cr-Commit-Position: refs/heads/master@{#33834}
Review URL: https://codereview.chromium.org/1678953004
Cr-Commit-Position: refs/heads/master@{#33881}
Add dedicated %LoadLookupSlot, %LoadLookupSlotInsideTypeof,
%LoadLookupSlotForCall, %StoreLookupSlot_Sloppy and
%StoreLookupSlot_Strict runtime entry points and use them
appropriately in the various compilers. This way we can
finally drop the machine operators from the JS graph level
completely in TurboFan.
Also drop the funky JSLoadDynamic operator from TurboFan,
which was by now just a small wrapper around the runtime
call to %LoadLookupSlot.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1683103002
Cr-Commit-Position: refs/heads/master@{#33880}
Port cfbd25617c
Original commit message:
Preparing the young generation for (real) non-contiguous backing memory, this
change removes object masks that are used to compute containment in semi and new
space. The masks are replaced by lookups for object tags and page headers, where
possible.
Details:
- Use the fast checks (page header lookups) for containment in regular code.
- Use the slow version that masks out the page start adress and iterates all
pages of a space for debugging/verification.
- The slow version works for off-heap/unmapped memory.
- Encapsulate all checks for the old->new barrier in Heap::RecordWrite().
R=mlippautz@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=chromium:581412
LOG=N
Review URL: https://codereview.chromium.org/1687113002
Cr-Commit-Position: refs/heads/master@{#33877}
Black allocation during scavenges will push objects on the marking deque that point to to-space. They should not be cleared.
BUG=chromium:561449
LOG=n
Review URL: https://codereview.chromium.org/1683983003
Cr-Commit-Position: refs/heads/master@{#33875}
The previous implementation used GetRawOperand(), which allows a nicely
unified handling of all scalar types, but returns an unsigned type.
Because of this, generate-bytecode-expectations couldn't properly handle
negative numbers.
This commit differentiate between different types of scalar operands and
uses the appropriate getter from i::interpreter::BytecodeArrayIterator,
thus correctly handling signed types where needed.
Two new helpers have been added to i::interpreter::Bytecodes:
* IsImmediateOperandType()
* IsIndexOperandType()
with the intuitive semantic.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1684113002
Cr-Commit-Position: refs/heads/master@{#33874}
Moves InterpreterAssembler out of the compiler directory and into the
interpreter directory. Makes InterpreterAssembler as subclass of
CodeStubAssembler.
As part of this change, the special bytecode dispatch linkage type
is removed and instead we use a InterfaceDispatchDescriptor and
a normal CodeStub linkage type.
Removes a bunch of duplicated logic in InterpreterAssembler and
instead uses the CodeStubAssembler logic. Refactors Interpreter
with these changes.
Modifies CodeStubAssembler to add the extra operations required
by the Interpreter (extra call types, raw memory access and some extra
binary ops). Also adds the ability for subclasses to add extra
prologue and epilogue operations around calls, which is required
for the Interpreter.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1673333004
Cr-Commit-Position: refs/heads/master@{#33873}
