The motivation for this is that CompilationInfo really shouldn't
explicitly know anything about CodeStubs. This is evident in
the TurboFan stubs pipeline, which only needs to pass down
information about Code::Flags to the code generator and not
any of the CallInterfaceDescriptor silliness that Hydrogen has
to push around, since TF has the Linkage class that
encapsulates everything that is needed for the stub ABI. So,
instead of threading CodeStub machinery through the TF stub
pipeline, it is now removed from CompilationInfo and replaced
by only the explicit bits needed both by the Crankshaft and
TF pipelines in code generation.
Review URL: https://codereview.chromium.org/1604543002
Cr-Commit-Position: refs/heads/master@{#33410}
This is to fix some of the failing test262 tests with ignition flag.
In few test262 tests, there is a throw from the script scope. Rewriter::Rewrite
pass converts expression statements into assignment statements in script scope.
This causes interpreter to fail because assignment expression expects a result
in accumulator but throw statement does not return a value. To fix this, we
now mark that accumulator contains a value when visiting throw statement.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1523423003
Cr-Commit-Position: refs/heads/master@{#33408}
* Treat Select nodes as escaping
* Correctly void virtual field information
after a store to a non-const index
* Add a shortcut if all allocates escape
* Add a shortcut if no allocates are discovered
* Only reduce FrameState/StateValues nodes if they
have virtual allocates as input (transitively)
* Fix bug in FrameState/StateValues duplication
* Add check to verifier: First 3 inputs of FrameState
must be StateValues
R=mstarzinger@chromium.org
BUG=v8:4586
LOG=n
Review URL: https://codereview.chromium.org/1583213003
Cr-Commit-Position: refs/heads/master@{#33406}
Currently we fail to properly handle shadowed properties. If the
receiver defines a non-enumerable property that reappears on the
prototype as enumerable it incorrectly shows up in [[Enumerate]].
By extending the KeyAccumulator to track non-enumerable properties
we can now properly filter them out when seeing them further up in
the prototype-chain.
BUG=v8:705
LOG=y
Review URL: https://codereview.chromium.org/1608523002
Cr-Commit-Position: refs/heads/master@{#33405}
Reason for revert:
Predecessor CL suspect for roll breakage: https://codereview.chromium.org/1610563002
Original issue's description:
> [runtime] Introduce maps for the likely cases of FromPropertyDescriptor.
>
> This change improves performance for the common case of
> Object.getOwnPropertyDescriptor by up 3x-4x, where we just
> return a property descriptor object for a regular data or
> accessor property.
>
> R=yangguo@chromium.org
>
> Committed: https://crrev.com/ffa9e82235b20c523ebb1151c6196bc6232296b9
> Cr-Commit-Position: refs/heads/master@{#33398}
TBR=yangguo@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1604243002
Cr-Commit-Position: refs/heads/master@{#33403}
This removes the above flag definition. The flag is no longer needed as
the default implementation is more than capable of faking presence of
handling of try-catch and try-finally constructs by now.
R=rmcilroy@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1603063003
Cr-Commit-Position: refs/heads/master@{#33402}
This implements a first version of exception handler table construction
within the interpreter. Note that the local control flow for try-catch
and try-finally statements is still off, and also stack unwinding does
not yet respect interpreter frames. But generated handler tables should
be populated correctly already.
R=oth@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1607433005
Cr-Commit-Position: refs/heads/master@{#33400}
Reason for revert:
Breaks roll: https://codereview.chromium.org/1603953002/
Original issue's description:
> [runtime] Migrate Object.getOwnPropertyNames to C++.
>
> The Object.getOwnPropertyNames method always calls into C++ anyway,
> so there's no point in having the JavaScript wrapper around at all.
>
> Drive-by-fix: Inline GetOwnEnumerablePropertyNames into its single
> call site.
>
> R=yangguo@chromium.org
>
> Committed: https://crrev.com/bf027fe756f62b4abcac8aa08134c8c5ed055620
> Cr-Commit-Position: refs/heads/master@{#33380}
TBR=yangguo@chromium.org,bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
Review URL: https://codereview.chromium.org/1609173002
Cr-Commit-Position: refs/heads/master@{#33399}
This change improves performance for the common case of
Object.getOwnPropertyDescriptor by up 3x-4x, where we just
return a property descriptor object for a regular data or
accessor property.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1607943003
Cr-Commit-Position: refs/heads/master@{#33398}
The old handling of escaped keywords erroneously treated escaped versions
of "let" and "static" as ESCAPED_KEYWORD, leading to erroneous errors in
sloppy mode. Moreover, though the class literal parsing code attempted
to fix up the parsing of escaped versions of "static" to allow it in the
right places, that code wasn't complete.
Fixing the scanner to mark escaped "static" as ESCAPED_STRICT_RESERVED_WORD
allows simplifying the class literal parsing code. A little extra code
was needed to properly handle the new treatment of escaped "let".
Note that "yield" is still broken (that is, we're overly restrictive of
escaped "yield" in sloppy mode).
Review URL: https://codereview.chromium.org/1602013007
Cr-Commit-Position: refs/heads/master@{#33396}
This patch implements one aspect of ES2015 RegExp subclassing:
String.prototype.replace is separated into two parts, a method on
RegExp.prototype in case the first argument is a RegExp, and the
String.prototype.replace method, which handles the string pattern
case. This separation is described in the ES2015 specification.
Most of the patch is simply moving code from string.js to regexp.js.
R=yangguo
LOG=Y
BUG=v8:4343
Review URL: https://codereview.chromium.org/1590673002
Cr-Commit-Position: refs/heads/master@{#33393}
o Adds wide variants of bytecodes that have operands describing ranges
of registers. The upcoming wide register support does not suppport
re-mapping ranges.
o Adds kRegPair16 and kRegTriple16 operands required for new wide
bytecodes and renames Count8/Count16 operands to RegCount8/RegCount16.
o Removes Exchange bytecodes
BUG=v8:4675
LOG=NO
Review URL: https://codereview.chromium.org/1595103006
Cr-Commit-Position: refs/heads/master@{#33389}
Fixes a bug where the context would be popped before labeled block break target
location.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1601153002
Cr-Commit-Position: refs/heads/master@{#33388}
Newly added tests cctest/test-run-wasm-js/Run_JSSelect_0...6 cause failures
on MIPS bigendian and are skipped until a solution is found.
BUG=
Review URL: https://codereview.chromium.org/1608813003
Cr-Commit-Position: refs/heads/master@{#33387}
After 1564083002, spread expressions are desugared and should not
survive in the AST after parsing. This patch removes dead code
related to this. It also eliminates the kSpread bailout reason
and the concat_iterable_to_array_builtin.
R=bmeurer@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1592713002
Cr-Commit-Position: refs/heads/master@{#33385}
Now that we support eval in Ignition, remove the fallback for eval checks
and make the flag only fallback on catch blocks.
BUG=v8:4280,v8:4676
LOG=N
Review URL: https://codereview.chromium.org/1595223004
Cr-Commit-Position: refs/heads/master@{#33384}
The Object.getOwnPropertyNames method always calls into C++ anyway,
so there's no point in having the JavaScript wrapper around at all.
Drive-by-fix: Inline GetOwnEnumerablePropertyNames into its single
call site.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1605803002
Cr-Commit-Position: refs/heads/master@{#33380}
The implementation of Object.getOwnPropertyDescriptor always called into
C++ anyway, so there's no need to have this JavaScript wrapper around at
all.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1606783002
Cr-Commit-Position: refs/heads/master@{#33379}
The old mechanism was a left-over from a previous time where the runtime
would rely on the presence or absence of the setter to figure out
whether or not the property is mutable. This is unnecessary by now.
Review URL: https://codereview.chromium.org/1600923002
Cr-Commit-Position: refs/heads/master@{#33377}
Previously MakeModuleExport invalidly set "all-can-*" to true. Also module export setters need to throw (in strict-mode) according to ES6 9.4.6.6 and 9.4.6.9.
BUG=
Review URL: https://codereview.chromium.org/1602753002
Cr-Commit-Position: refs/heads/master@{#33376}
This adds a handler table field to the header of our BytecodeArray
objects. The field will eventually hold a range-based handler table
similar to full-codegen code, to support exception handlong within
interpreted code.
R=oth@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1606493002
Cr-Commit-Position: refs/heads/master@{#33373}
VisitObjectLiteral has two parts. First it creates a literal and then
sets properties or accessor properties. Setting properties requires a
runtime call and it expects the literal object which was created in the
first part is contiguous with other registers it allocates. Since these
are allocated in a different scope they are not always contiguous.
This causes problems with mjsunit/setter-on-constructor-prototype.js.
This cl fixes by allocating contiguous registers in the inner scope.
Literal value is copied into the newly allocated register so that all
the required registers are always contiguous.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1588903002
Cr-Commit-Position: refs/heads/master@{#33371}
Reason for revert:
Code is incorrect for -0.
Original issue's description:
> [turbofan] Implement rounding of floats on x64 and ia32 without sse4.1.
>
> The implementation sets the rounding mode flag and then uses the
> cvtsd2si and cvtsi2sd instructions (convert between float and int) to do
> the rounding. Input values outside int range either don't have to be
> rounded anyways, or are rounded by calculating input + 2^52 - 2^52 for
> positive inputs, or input -2^52 + 2^52 for negative inputs. The original
> rounding mode is restored afterwards.
>
> R=titzer@chromium.org
>
> B=575379
>
> Committed: https://crrev.com/fa5d09e547abe79a8c82f780deb980c53ad78beb
> Cr-Commit-Position: refs/heads/master@{#33367}
TBR=titzer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1593313010
Cr-Commit-Position: refs/heads/master@{#33369}
The implementation sets the rounding mode flag and then uses the
cvtsd2si and cvtsi2sd instructions (convert between float and int) to do
the rounding. Input values outside int range either don't have to be
rounded anyways, or are rounded by calculating input + 2^52 - 2^52 for
positive inputs, or input -2^52 + 2^52 for negative inputs. The original
rounding mode is restored afterwards.
R=titzer@chromium.org
B=575379
Review URL: https://codereview.chromium.org/1584663007
Cr-Commit-Position: refs/heads/master@{#33367}
This became temporarily a big issue, because spreads are desugared
into do-expressions. This patch fixes the problem with having
spreads as parameter initializers in arrow expressions, e.g., this
line would crash:
[], ((x = [...[42]]) => x)();
R=rossberg@chromium.org
BUG=chromium:578038
LOG=N
Review URL: https://codereview.chromium.org/1581403007
Cr-Commit-Position: refs/heads/master@{#33365}
In many places we over-specify runtime-calls by explicitly mentioning
again the argument count. Except for var-args runtime-functions we can
easily deduce this from the parameters in runtime.h.
BUG=
Review URL: https://codereview.chromium.org/1596293003
Cr-Commit-Position: refs/heads/master@{#33363}
