Otherwise e.g.,
"use strict";
class C { static f() { super.location = "http://bla.com" }}
C.f.call(this);
will mask location on the hidden prototype of the JSGlobalObject.
BUG=
Review URL: https://codereview.chromium.org/1757933002
Cr-Commit-Position: refs/heads/master@{#34432}
This introduces a new instance type and reorders the JSObject types so any type requiring special LookupIterator support can be identified with a single range check.
In addition, it restructures the Next for better performance, avoiding unnecessary calls.
BUG=
Review URL: https://codereview.chromium.org/1751043002
Cr-Commit-Position: refs/heads/master@{#34429}
This relaxes the constraints of the optimized code map in order to be
able to update existing entries. It also simplifies the interface a
little bit. We can now insert an entry for a newly allocated literals
array together with previously cached context-independent code.
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/1753213002
Cr-Commit-Position: refs/heads/master@{#34427}
Generalize the code that we have for StrictEqualStub to also general a
StrictNotEqualStub and hook that up with TurboFan and Ignition. It's
still falling back to the runtime for every String (in)equality check.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1756793002
Cr-Commit-Position: refs/heads/master@{#34426}
In order to track certain critical code-patters we will start adding
micro-benchmarks that reflect common requests on http://jsperf.com.
In this first CL a number of property enumeration methods are added,
in the hope to get a clearer picture on future regressions.
BUG=
Review URL: https://codereview.chromium.org/1702613002
Cr-Commit-Position: refs/heads/master@{#34425}
The macro is currently used by AllocateHeapNumberStub and AllocateMutableHeapNumberStub, which are now turbofan code stubs.
It can be used to allocate objects in the new or old space, optionally with double alignment.
BUG=588692
LOG=y
Review URL: https://codereview.chromium.org/1735803003
Cr-Commit-Position: refs/heads/master@{#34424}
Initial version of a new StrictEqualStub written as TurboFan code stub,
that implements the full strict equality comparison and is usable for
both TurboFan and Ignition (and soon for the generic CompareIC case
too). The stub is not fully optimized yet, i.e. we still go to the
runtime for string comparisons, but that'll be addressed in a follow-up
CL.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1753173003
Cr-Commit-Position: refs/heads/master@{#34423}
The function literal consists of a list of statements. Each statement
is associated with a statement position including break location. The
only exception to this rule is when the function immediately throws if
scope resolution found an illegal redeclaration. Make sure that we add a
break location for this case as well. The debugger relies on this.
R=bmeurer@chromium.org, vogelheim@chromium.org
BUG=v8:4690
LOG=N
Review URL: https://codereview.chromium.org/1759603002
Cr-Commit-Position: refs/heads/master@{#34422}
port dbf5fffd2d (r34397)
original commit message:
In ia32 PushArgsAndConstruct builtin, we run out of registers and need to
temporarily store the data in the stack. In the earlier implementation,
a location outside the esp was used. This causes a problem if there is a
interrupt/signals which would use the same stack and corrupt the data that
is above the esp. This cl fixes it by pushing it onto the stack so that
the stack pointer is updated and hence the corruption will not happen. We
reuse the slot meant for receiver as a temporary store.
BUG=
Review URL: https://codereview.chromium.org/1756743002
Cr-Commit-Position: refs/heads/master@{#34420}
Rolling v8/tools/clang to a8288b3f25cdc4e3c3f4dd7ea2f7765ae8847459
Rolling v8/tools/swarming_client to df6e95e7669883c8fe9ef956c69a544154701a49
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review URL: https://codereview.chromium.org/1753133002
Cr-Commit-Position: refs/heads/master@{#34418}
Add support to log source position offsets to the profiler. As part of
this change PositionsRecorder is split into two, with the subset needed
by log.cc moved into log.h and the remainder kept in assembler.h as
AssemblerPositionsRecorder. The interpreter's source position table
builder is updated to log positions when the profiler is active.
BUG=v8:4766
LOG=N
Review URL: https://codereview.chromium.org/1737043002
Cr-Commit-Position: refs/heads/master@{#34416}
Fixes a bug in the constant pool padding calculation.
BUG=v8:4680
LOG=N
Review URL: https://codereview.chromium.org/1749853002
Cr-Commit-Position: refs/heads/master@{#34403}
Runtime asserts are were previously a bit annoying to debug, due to
the lack of a useful error message, even in debug mode. This patch
prints out some more information in debug mode for runtime assert
failures while preserving their exception-throwing semantics. While
we're at it, it requires a semicolon after RUNTIME_ASSERT macro
invocations.
```
$ rlwrap out/Debug/d8 --allow-natives-syntax
V8 version 5.1.0 (candidate)
d8> %ArrayBufferNeuter(1)
#
# Runtime error in ../../src/runtime/runtime-typedarray.cc, line 52
#
# args[0]->IsJSArrayBuffer()
==== C stack trace ===============================
1: 0xf70ab5
2: 0xadeebf
3: 0xadedd4
4: 0x2ef17630693b
(d8):1: illegal access
%ArrayBufferNeuter(1)
^
d8>
```
Also give the other 'illegal access' case (a special SyntaxError type) a more
descriptive error message for its sole usage.
R=adamk
Review URL: https://codereview.chromium.org/1748183002
Cr-Commit-Position: refs/heads/master@{#34401}
Initial implementation of S390 specific debug and IC functions.
R=danno@chromium.org,jkummerow@chromium.org,jochen@chromium.org,jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=
Review URL: https://codereview.chromium.org/1743263003
Cr-Commit-Position: refs/heads/master@{#34400}
In ia32 PushArgsAndConstruct builtin, we run out of registers and need to
temporarily store the data in the stack. In the earlier implementation,
a location outside the esp was used. This causes a problem if there is a
interrupt/signals which would use the same stack and corrupt the data that
is above the esp. This cl fixes it by pushing it onto the stack so that
the stack pointer is updated and hence the corruption will not happen. We
reuse the slot meant for receiver as a temporary store.
TBR=rmcilroy@chromium.org
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1750373002
Cr-Commit-Position: refs/heads/master@{#34397}
When we try to optimize a function with Crankshaft, but compilation
bails out, don't disable optimization for that function entirely,
just disable Crankshaft, so TurboFan will be used for the next attempt.
Thereby this widens the TurboFan intake valve.
Review URL: https://codereview.chromium.org/1751873002
Cr-Commit-Position: refs/heads/master@{#34396}
Adds the translation from optimized frame to bytecode offset
in FrameSummary. For interpreter, the bailout id represents the bytecode
array offset. So we can directly use the bailout id as the code offset
in the FrameSummary. Also updates mjsunit.status with more information
about failing tests.
BUG=v8:4280, v8:4689
LOG=N
Review URL: https://codereview.chromium.org/1740753002
Cr-Commit-Position: refs/heads/master@{#34393}
The preparser should ignore "use strong" if the --strong_mode flag
is not turned on, but this should not stop processing subsequent
directives.
R=rossberg@chromium.org
BUG=
LOG=N
Review URL: https://codereview.chromium.org/1752753002
Cr-Commit-Position: refs/heads/master@{#34392}
Similar to fullcodegen, Ignition now also marks a for-in statement as
slow (via the TypeFeedbackVector) when we have to call %ForInFilter,
i.e. we either have no enumeration cache or the receiver map changes
during an iteration of the for-in map.
R=mstarzinger@chromium.org
BUG=v8:3650
LOG=n
Review URL: https://codereview.chromium.org/1755563002
Cr-Commit-Position: refs/heads/master@{#34391}
We used to emit debug break location on block entry. This cannot be
ported to the interpreted as we do not emit bytecode for block entry.
This made no sense to begin with though, but accidentally added
break locations for var declarations.
With this change, the debugger no longer breaks at var declarations
without initialization. This is in accordance with the fact that the
interpreter does not emit bytecode for uninitialized var declarations.
Also fix the bytecode to match full-codegen's behavior wrt return
positions:
- there is a break location before the return statement, with the source
position of the return statement.
- right before the actual return, there is another break location. The
source position points to the end of the function.
R=rmcilroy@chromium.org, vogelheim@chromium.orgTBR=rossberg@chromium.org
BUG=v8:4690
LOG=N
Review URL: https://codereview.chromium.org/1744123003
Cr-Commit-Position: refs/heads/master@{#34388}
ArrayIteratorPrototype must not provide Symbol.iterator.
R=rossberg
BUG=
Review URL: https://codereview.chromium.org/1749093002
Cr-Commit-Position: refs/heads/master@{#34386}
Runtime errors will be suppressed in --rebaseline mode, unless the
--verbose flag is passed.
The reasoning behind (rebaseline && !verbose) and not just (verbose)
is to suppress harmless noise while updating the expectation for
existing, known good snippets, without hiding actually relevant
errors when the tool is used to write new expectation files.
In fact, some tests are supposed to produce a runtime error, which
might nevertheless alarm a developer who is just --rebaseline'ing.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1742723003
Cr-Commit-Position: refs/heads/master@{#34385}
The for-of-finalization CL incorrectly removed the input argument from
BuildIteratorClose. I'm reverting this, adding a regression test, and fixing an
existing test that was wrong.
BUG=
R=rossberg
Review URL: https://codereview.chromium.org/1750543002
Cr-Commit-Position: refs/heads/master@{#34384}
The code used to [[Get]] the first element twice instead of once, which can be
observed (one of the kangax tests does so).
R=rossberg
BUG=
Review URL: https://codereview.chromium.org/1747933002
Cr-Commit-Position: refs/heads/master@{#34383}
