This switches full-codegen to no longer push and pop StackHandler
markers onto the operand stack, but relies on a range-based handler
table instead. We only use StackHandlers in JSEntryStubs to mark the
transition from C to JS code.
Note that this makes deoptimization and OSR from within any try-block
work out of the box, makes the non-exception paths faster and should
overall be neutral on the memory footprint (pros).
On the other hand it makes the exception paths slower and actually
throwing and exception more expensive (cons).
R=yangguo@chromium.org
TEST=cctest/test-run-jsexceptions/DeoptTry
Review URL: https://codereview.chromium.org/1010883002
Cr-Commit-Position: refs/heads/master@{#27440}
The root cause for the bug is that the positions assigned to desugared
code was inconsistent with the source ranges of block scopes.
Since the fact that the position is assigned causes the debugger to
break at the parser-generated statement, the fix is to remove positions
from those nodes that we do not want to break on.
The CL also teaches Hydrogen to tolerate these cases.
R=adamk@chromium.org,rossberg@chromium.org
BUG=chromium:468661
LOG=Y
Review URL: https://codereview.chromium.org/1032653002
Cr-Commit-Position: refs/heads/master@{#27424}
Gather references to unbound variables where the reference (VariableProxy) is
inside strong mode. Check them against the global object when a script is bound
to a context (during compilation).
This CL only checks unbound variables which are not inside lazy functions - TBD
how do we solve that; alternatives: add developer mode which disables laziness /
do the check whenever lazy functions are really compiled.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1005063002
Cr-Commit-Position: refs/heads/master@{#27422}
The test demonstrates a bad interaction between arguments object
materialization, escape analysis and exception handling.
We can return a wrong arguments object if we materialize arguments
object (using f.arguments) and then throw around f's frame so that f
does not clean up the materialized frame information (see the
MaterializedObjectStore in deoptimizer.h/.cc). If we enter another
function that has the same frame pointer and request an arguments object
of (or lazily deoptimize) that function, we can get the materialized
object of the original function.
We should clean up the materialized object store when we unwind the
stack.
BUG=v8:3985
LOG=n
Review URL: https://codereview.chromium.org/1032623003
Cr-Commit-Position: refs/heads/master@{#27406}
Reason for revert:
Layout test failures. Please update layout test expectations before landing this, in order to not block the roll.
Original issue's description:
> [es6] Object.getPrototypeOf should work with values
>
> The final spec for Object.getPrototypeOf calls ToObject on the
> parameter, which means that it should only throw for null and
> undefined. For other non object values the prototype of the wrapper
> should be used.
>
> BUG=v8:3964
> LOG=N
> R=adamk, rossberg@chromium.org
>
> Committed: https://crrev.com/ea463a916bbe5994b0d2d04e8075058b373b2e2c
> Cr-Commit-Position: refs/heads/master@{#27354}
TBR=adamk@chromium.org,rossberg@chromium.org,arv@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3964
Review URL: https://codereview.chromium.org/1033623002
Cr-Commit-Position: refs/heads/master@{#27389}
Handlers should be in charge of this work. The change uncovered a bug in
vector-ics related to keyed loads into strings. It's important for
StringCharCodeAtGenerator, a helper used in full code and in
LoadIndexedStringStub (a handler) to protect the vector and slot registers
when it makes a runtime call to convert a HeapNumber to a Smi.
It's still possible for the handler to MISS after this call, perhaps due
to out of bounds access. In that case, the vector and slot registers need
to be delivered safely to the MISS handler.
BUG=
Review URL: https://codereview.chromium.org/1028093002
Cr-Commit-Position: refs/heads/master@{#27377}
This method uses in messages.js in GetSourceLine and GetPositionInLine. This methods uses in v8::Message API methods and there is no documentation about it.
Method looks obsolete.
One of the strange side effect is shown by attached issue.
BUG=chromium:468781
R=yangguo@chromium.org
LOG=Y
Review URL: https://codereview.chromium.org/1022333004
Cr-Commit-Position: refs/heads/master@{#27374}
15.5.4.6 5.b requires each part to be converted using ToString(). This also needs to occur in the single argument fast-case.
BUG=v8:3981
R=arv@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1029103002
Cr-Commit-Position: refs/heads/master@{#27372}
The final spec for Object.getPrototypeOf calls ToObject on the
parameter, which means that it should only throw for null and
undefined. For other non object values the prototype of the wrapper
should be used.
BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org
Review URL: https://codereview.chromium.org/1014813003
Cr-Commit-Position: refs/heads/master@{#27354}
The problem manifests itself when parsing manages to return something
meaningful in the presence of a stack overflow. This happens because
calling ParserBase::Next() will still return one valid token on stack
overflow, before starting to return invalid tokens.
Take the following input as example:
a.map(v => v + 1);
| |
already next token
parsed (which will be an invalid token
(identifier) because of a stack overflow)
The "v" may have been already parsed into a VariableProxy, then if a
stack overflow occurs, next token will be an invalid token (instead
of Token::ARROW), but the parser will return the VariableProxy.
This always happens when lazy-parsing arrow functions, so the position
in the input stream where the the arrow function code ends is known.
This fix adds a check that ensures that parsing ended at the end
position of the arrow function.
BUG=465671
LOG=N
Review URL: https://codereview.chromium.org/1023483003
Cr-Commit-Position: refs/heads/master@{#27325}
With this change, we remember the types of frame state inputs (in a new
operator, called TypedStateValues). Instead of inferring the value types
when building translations, we used the recorded types.
The original approach was not reliable because the passes after
simplified lowering can change node types, and this in turn confuses
the translation builder.
BUG=chromium:468727
LOG=n
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1015423002
Cr-Commit-Position: refs/heads/master@{#27310}
When the debugger is active, a host of connected functions get an associated
DebugInfo structure, and their code is copied. The debugger uses the original
code to occasionally patch ICs with their initial value. Although IC learning
can occur, it's thrown away often, depending on the constellation of
breakpoints active or deactivating. Finally, feedback is discarded when the
debugger is turned off.
The type feedback vector needs to be brought into line with this behavior, so
now the debugger clears it's IC slots at appropriate bottlenecks in debug.cc.
R=yangguo@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1014373002
Cr-Commit-Position: refs/heads/master@{#27289}
Updated excludes to remove SKIPs where possible. Either
removing if no longer needed or replacing with SLOW where
tests just need more time to run
modified: test/cctest/cctest.status
modified: test/mjsunit/mjsunit.status
R=danno@chromium.org, svenpanne@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1017073003
Cr-Commit-Position: refs/heads/master@{#27287}
The change introduces a second frame state (for the state before
the operation) for the StoreProperty nodes. If the store writes
into a typed array, the frame state is used for lazy deopt from
the to-number conversion that is performed by the store.
BUG=v8:3963
LOG=n
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/997983004
Cr-Commit-Position: refs/heads/master@{#27285}
In constructing the transfer between loop copies, we need to merge the backedges from all the previous copies of the given loop. The control reduction will work out which ones are really reachable.
R=mstarzinger@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1004993004
Cr-Commit-Position: refs/heads/master@{#27246}
This ensures that there is only one stub that deals with unwinding the
stack. Having more than one place containing that logic is brittle and
error prone, especially when it is a corner case only for RangeErrors.
R=titzer@chromium.org
TEST=mjsunit/regress/regress-crbug-467047
BUG=chromium:467047
LOG=N
Review URL: https://codereview.chromium.org/1012103002
Cr-Commit-Position: refs/heads/master@{#27243}
The evaluation order of receiver versus arguments is not properly
defined by C++. This caused issues with Clang where the environment
changed after the receiveing environment was already loaded.
R=jarin@chromium.org
BUG=chromium:467531
TEST=mjsunit/regress/regress-crbug-467531
LOG=N
Review URL: https://codereview.chromium.org/1015683002
Cr-Commit-Position: refs/heads/master@{#27238}
ES6 specs the function length property (it was not part of ES5) and
it makes it configurable.
BUG=v8:3045
LOG=N
R=mstarzinger@chromium.org, adamk@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/993073002
Cr-Commit-Position: refs/heads/master@{#27190}
Error.stack contains function.name if its type is string.
Otherwise if function have inferred name then .stack contains it.
For functions from eval .stack property contains "eval".
LOG=N
BUG=chromium:17356
R=yurys@chromium.org
Review URL: https://codereview.chromium.org/919653002
Cr-Commit-Position: refs/heads/master@{#27186}
Cleanup: Better helpers, unified line splitting. Also asserting that without
strong mode, the snippets don't produce errors.
Fix: The eval related tests were wrong (we didn't make sure that the error
thrown comes from strong scoping and is not a normal runtime error).
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/993393002
Cr-Commit-Position: refs/heads/master@{#27153}
The test/cctest/cctest.status and test/mjsunit/mjsunit.status
tests now pass under the simulator so removing these
excludes
modified: test/cctest/cctest.status
modified: test/mjsunit/mjsunit.status
R=danno@chromium.org, svenpanne@chromium.org
BUG=
Review URL: https://codereview.chromium.org/995393003
Cr-Commit-Position: refs/heads/master@{#27145}
Contribution of PowerPC port (continuation of 422063005,
817143002,866843003, and 901083004). This patch updates
the ppc directories to make them current with changes in
common code as of today.
We had to exclude the test test-serialize/SerializeInternalReference
until we agree on the right way to add those changes for PPC as
outlined in the description in the google doc provided earlier.
We also had to exclude a couple of other tests due to new
failures seen since the last uplevel. We excluded as opposed
to waiting until we could investigate to maximize the chance
of getting PPC compiling in the google repos before new
breaking changes are made.
I'll note that before applying any of our changes the
mozilla part of quickcheck was already broken when using
the lastest repo content so I had to run without that
modified: src/compiler/ppc/code-generator-ppc.cc
modified: src/compiler/ppc/instruction-codes-ppc.h
modified: src/compiler/ppc/instruction-selector-ppc.cc
modified: src/ic/ppc/handler-compiler-ppc.cc
modified: src/ic/ppc/ic-compiler-ppc.cc
modified: src/ppc/assembler-ppc-inl.h
modified: src/ppc/assembler-ppc.cc
modified: src/ppc/assembler-ppc.h
modified: src/ppc/builtins-ppc.cc
modified: src/ppc/code-stubs-ppc.cc
modified: src/ppc/codegen-ppc.cc
modified: src/ppc/full-codegen-ppc.cc
modified: src/ppc/lithium-codegen-ppc.cc
modified: src/ppc/macro-assembler-ppc.cc
modified: src/ppc/macro-assembler-ppc.h
modified: test/cctest/cctest.status
R=danno@chromium.org, svenpanne@chromium.org
BUG=
Review URL: https://codereview.chromium.org/994533004
Cr-Commit-Position: refs/heads/master@{#27125}
The prototype of a class constructor function is read only. When we set
computed property names we were ignoring this and we were overriding the
property.
Since the prototype is the only possible own read only property on the
constructor function object we special case this so we do not have to
check this for every property in the class literal.
BUG=v8:3945
LOG=N
R=mstarzinger@chromium.org, dslomov@chromium.org
Review URL: https://codereview.chromium.org/985643003
Cr-Commit-Position: refs/heads/master@{#27106}
This makes sure only the %_DeoptimizeNow intrinsic is inlined, and
not the %DeoptimizeNow one. It hence re-establishes the invariant
that JSIntrinsicLowering only deals with inline intrinsics.
R=jarin@chromium.org
TEST=mjsunit/compiler/eager-deopt-simple
Review URL: https://codereview.chromium.org/988333003
Cr-Commit-Position: refs/heads/master@{#27070}
This involved renaming apart a few more intrinsics. In the long run,
we want to clean up redundant intrinsics which just delegate.
BUG=v8:3947
LOG=n
Review URL: https://codereview.chromium.org/984963002
Cr-Commit-Position: refs/heads/master@{#27043}
Internal references are absolute addresses into the instruction
stream. Turn them into relative addresses when serializing and
back when deserializing to keep them valid.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/976623002
Cr-Commit-Position: refs/heads/master@{#27020}
This adds support for the double bits intrinsics to TurboFan, and is
a first step towards fast Math functions inlined into TurboFan code
or even compiled by themselves with TurboFan.
Review URL: https://codereview.chromium.org/974313002
Cr-Commit-Position: refs/heads/master@{#27006}
Function name property is now standardized in ES6. It was a Mozilla proprietary
extension before. With ES6, the property was made configurable, so that it can
be used instead of another proprietary property, displayName.
This is a revert of revert c791d84112.
Last time this broke a Chrome browser test which has since been updated:
5f75a3be4c
BUG=v8:3333
LOG=N
R=mstarzinger@chromium.org,verwaest@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/977003004
Cr-Commit-Position: refs/heads/master@{#26996}
This just contains test, no fixes. Note that some of the tests are
still disabled because they either fail or we don't want ClusterFuzz
to pick up the flag yet.
R=jarin@chromium.org
TEST=cctest/test-run-jsexceptions/Deopt,mjsunit/compiler/try-deopt
Review URL: https://codereview.chromium.org/972943004
Cr-Commit-Position: refs/heads/master@{#26968}
Contribution of PowerPC port (continuation of 422063005, 817143002,
866843003, and 901083004. This patch updates the ppc directories
to make them current with changes in common code, removes the
optimization to use the ool constant pool, and excludes tests that
don't pass under the ppc simulator given a 240s timeout.
Subsequent patches will cover:
- remaining optimizations for PPC
- remaining AIX changes not resolved by 4.8 compiler (4.8 is only recently available for AIX)
- incremental updates required to ppc directories due to platform specific changes made
in google repos while we complete the above steps.
modified: src/compiler/ppc/code-generator-ppc.cc
modified: src/ic/ppc/handler-compiler-ppc.cc
modified: src/ppc/assembler-ppc-inl.h
modified: src/ppc/assembler-ppc.cc
modified: src/ppc/assembler-ppc.h
modified: src/ppc/builtins-ppc.cc
modified: src/ppc/code-stubs-ppc.cc
modified: src/ppc/debug-ppc.cc
modified: src/ppc/deoptimizer-ppc.cc
modified: src/ppc/frames-ppc.cc
modified: src/ppc/frames-ppc.h
modified: src/ppc/full-codegen-ppc.cc
modified: src/ppc/lithium-codegen-ppc.cc
modified: src/ppc/lithium-ppc.cc
modified: src/ppc/lithium-ppc.h
modified: src/ppc/macro-assembler-ppc.cc
modified: src/ppc/macro-assembler-ppc.h
modified: test/cctest/cctest.status
modified: test/mjsunit/mjsunit.status
R=danno@chromium.org, svenpanne@chromium.org
BUG=
Review URL: https://codereview.chromium.org/965823002
Cr-Commit-Position: refs/heads/master@{#26951}
This is partially based on r21609 but that CL was incomplete.
Function name is still non writable so one has to use defineProperty
to change the actual value.
BUG=v8:3333
LOG=N
R=adamk, mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/960343002
Cr-Commit-Position: refs/heads/master@{#26924}
This reverts commit b57be748b1 and
disables the test/mjsunit/debug-clearbreakpointgroup.js because
BreakLocationIterator::ClearBreakPoint is already broken for unrelated reasons (see v8:3924).
BUG=v8:3877
LOG=N
TEST=cctest/test-heap/Regress3877
Review URL: https://codereview.chromium.org/957373002
Cr-Commit-Position: refs/heads/master@{#26893}
We cannot yet detect use-before-declaration in general, because for that we'd
need to analyze the context when compiling. But we can detect an error case
where we first see a use, then a declaration.
For this, I also added end position tracking (needed for error messages) to
VariableProxy.
Note: the position naming is completely inconsistent: start_position &
end_position, position & end_position, pos & end_pos, beg_pos & end_pos, to name
a few. This doesn't fix all of it, but tries to unify towards start_position &
end_position whenever possible w/ minimal changes.
BUG=
Review URL: https://codereview.chromium.org/943543002
Cr-Commit-Position: refs/heads/master@{#26880}
This implements a special case of block cloning to recognize constructs like
if (a ? b : c) { ... }
that happen to be generated by Emscripten quite often.
Review URL: https://codereview.chromium.org/947963002
Cr-Commit-Position: refs/heads/master@{#26808}
This is done using desugaring. Before this we had:
result = iterator.next()
with this we instead do:
!%_IsSpecObject(result = iterator.next()) &&
%ThrowIteratorResultNotAnObject(result)
BUG=v8:3916
LOG=N
Review URL: https://codereview.chromium.org/929733003
Cr-Commit-Position: refs/heads/master@{#26805}
The adder should be gotten before the iterator.
Motivation: Once this is done we should be able to use a for-of loop
instead which leads to cleaner code and correct behavior once the
for-of loop correctly supports abrupt completion.
BUG=None
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/949933002
Cr-Commit-Position: refs/heads/master@{#26803}
Because we generated a different hash code for 0 and -0 we ended up
not even getting to the SameValueZero check.
BUG=v8:3906
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/947443005
Cr-Commit-Position: refs/heads/master@{#26787}
After further spec reading it turns out that we should not do ToObject
on the iterable.
BUG=None
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/941313003
Cr-Commit-Position: refs/heads/master@{#26786}
When the property is not found on the [[HomeObject]] prototype chain
then we should do a [[DefineOwnProperty]] on the instance.
BUG=v8:3330
LOG=N
Review URL: https://codereview.chromium.org/934463003
Cr-Commit-Position: refs/heads/master@{#26754}
It would force us to make mjsunit.js strong-compatible, and that's too much for
now (for the upcoming features) and would have a ripple effect on other
tests. Especially debug-script.js which unships harmony features would break.
R=rossberg@chromium.org
BUG=
Review URL: https://codereview.chromium.org/930293002
Cr-Commit-Position: refs/heads/master@{#26694}
This adds a new ControlFlowOptimizer that - for now - recognizes chains
of Branches generated by the SwitchBuilder for a subset of javascript
switches into Switch nodes. Those Switch nodes are then lowered to
either table or lookup switches.
Also rename Case to IfValue (and introduce IfDefault) for consistency.
BUG=v8:3872
LOG=n
Review URL: https://codereview.chromium.org/931623002
Cr-Commit-Position: refs/heads/master@{#26691}
1) Mutually recursive functions
2) Strong code using non-strong var before declaration.
These test cases ensure that we don't accidentally kill these wanted behaviors
when adding restrictions to strong mode.
BUG=
Review URL: https://codereview.chromium.org/927143002
Cr-Commit-Position: refs/heads/master@{#26671}
The preparser needs to log the usage of super properties and then update
the scope when we create the function later.
BUG=v8:3888
LOG=N
R=dslomov@chromium.org, marja
Review URL: https://codereview.chromium.org/923683002
Cr-Commit-Position: refs/heads/master@{#26642}
This CL fixes tests that no longer valid and also fixes two issues:
1. 'super()' in non derived constructors.
2. Failure to step into derived constructors.
R=arv@chromium.org, yurys@chromium.org
BUG=v8:3834
LOG=Y
Review URL: https://codereview.chromium.org/923443003
Cr-Commit-Position: refs/heads/master@{#26628}
