Commit Graph

258 Commits

Author SHA1 Message Date
rmcilroy
5c602c6fcc [Interpreter] Make lazy compilation the default.
BUG=v8:4280,v8:5038
LOG=N

Review-Url: https://codereview.chromium.org/2007453002
Cr-Commit-Position: refs/heads/master@{#36476}
2016-05-24 12:52:50 +00:00
mvstanton
a6ddbef064 Collect call counts for constructor calls, too.
The TurboFan inliner makes use of these counts.

BUG=

Review-Url: https://codereview.chromium.org/1969783002
Cr-Commit-Position: refs/heads/master@{#36472}
2016-05-24 11:53:45 +00:00
neis
1292721f92 [turbofan] Intrinsic-lowering for GeneratorGetInput and GeneratorGetResumeMode.
Also use the inlined version of CreateIterResultObject in Ignition's VisitYield.

BUG=v8:4907
TBR=littledan@chromium.org

Review-Url: https://codereview.chromium.org/2006613002
Cr-Commit-Position: refs/heads/master@{#36444}
2016-05-23 14:22:54 +00:00
oth
e43fbde72b [Interpreter] Preserve source positions in peephole optimizer.
The original peephole optimizer logic in the BytecodeArrayBuilder did
not respect source positions as it was written before there were
bytecode source positions. This led to some minor differences to
FCG and was problematic when combined with pending bytecode
optimizations. This change makes the new peephole optimizer fully
respect source positions.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1998203002
Cr-Commit-Position: refs/heads/master@{#36439}
2016-05-23 13:33:20 +00:00
neis
b3bfc0bd58 [interpreter] Fix source position of yield-exceptions in generators.
R=rmcilroy@chromium.org
BUG=v8:4907,v8:5027

Review-Url: https://codereview.chromium.org/1995303002
Cr-Commit-Position: refs/heads/master@{#36421}
2016-05-20 17:50:50 +00:00
neis
b3ae02e8e4 [turbofan] Implement intrinsic lowering of %_GeneratorClose.
Also change parser to insert %_GeneratorClose instead of %GeneratorClose.
Full-codegen generators will fall back to the runtime function.

BUG=v8:4907

Review-Url: https://codereview.chromium.org/1993073003
Cr-Commit-Position: refs/heads/master@{#36401}
2016-05-20 09:41:23 +00:00
neis
3560d9bd58 [runtime] Fix effect of setting .prototype on generator functions.
When setting a generator function's  "prototype" property to a non-object, the
prototype of new generator instances should be %GeneratorPrototype%, not
%ObjectPrototype%.

R=verwaest@chromium.org
BUG=v8:5011

Review-Url: https://codereview.chromium.org/1982203003
Cr-Commit-Position: refs/heads/master@{#36313}
2016-05-18 09:18:12 +00:00
rmcilroy
8352ad50e6 [Interpreter] Change LogicalNot to ToBooleanLogicalNot and add non-ToBoolean version.
Makes LogicalNot bytecode not do the ToBoolean operation, and add support in the
peephole optimizer to choose between the appropriate bytecode depending upon
whether the previous bytecode emitted a boolean or not.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1985033002
Cr-Commit-Position: refs/heads/master@{#36295}
2016-05-17 20:41:04 +00:00
neis
2123afff52 Remove more unused bailout reasons.
There's a script for finding them (tools/check-unused-bailouts.sh), but make
sure you don't have an old .bailout-reason.h.swp or such around when using it...

R=mstarzinger@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1986173004
Cr-Commit-Position: refs/heads/master@{#36287}
2016-05-17 16:13:33 +00:00
neis
b9bfbcb558 Remove now-unused kIllegalBytecode bailout reason.
R=mstarzinger@chromium.org, oth@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1988573003
Cr-Commit-Position: refs/heads/master@{#36281}
2016-05-17 13:36:18 +00:00
bmeurer
551e0aa11b [es6] Reintroduce the instanceof operator in the backends.
This adds back the instanceof operator support in the backends and
introduces a @@hasInstance protector cell on the isolate that guards the
fast path for the InstanceOfStub. This way we recover the ~10%
regression on Octane EarleyBoyer in Crankshaft and greatly improve
TurboFan and Ignition performance of instanceof.

R=ishell@chromium.org
TBR=hpayer@chromium.org,rossberg@chromium.org
BUG=chromium:597249, v8:4447
LOG=n

Review-Url: https://codereview.chromium.org/1980483003
Cr-Commit-Position: refs/heads/master@{#36275}
2016-05-17 11:25:59 +00:00
caitpotter88
d08c0304c5 [esnext] prototype runtime implementation for async functions
BUG=v8:4483
LOG=N
R=littledan@chromium.org, adamk@chromium.org

Review-Url: https://codereview.chromium.org/1895603002
Cr-Commit-Position: refs/heads/master@{#36263}
2016-05-17 00:27:51 +00:00
gsathya
d33aedb7b9 Revert "Fix TypedArray Property optimizations", add regression test and eliminate dead code
This reverts commit 41d571dfe8.

Reason for revert: This patch breaks the correctness of the typedarray
properties such as length, byteOffset, byteLength.

The accessor check optimization code is dead code eliminated. A follow
up patch will fix this optimization correctly.

BUG=chromium:593634

Review-Url: https://codereview.chromium.org/1977983002
Cr-Commit-Position: refs/heads/master@{#36254}
2016-05-13 22:31:07 +00:00
oth
1818a2f278 [interpreter] Remove BytecodeArrayBuilder::Illegal().
BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1979523002
Cr-Commit-Position: refs/heads/master@{#36249}
2016-05-13 16:01:49 +00:00
oth
02b7373ab1 [interpreter] Introduce bytecode generation pipeline.
This change introduces a pipeline for the final stages of
bytecode generation.

The peephole optimizer is made distinct from the BytecodeArrayBuilder.

A new BytecodeArrayWriter is responsible for writing bytecode. It
also keeps track of the maximum register seen and offers a potentially
smaller frame size.

R=rmcilroy@chromium.org
LOG=N
BUG=v8:4280

Review-Url: https://codereview.chromium.org/1947403002
Cr-Commit-Position: refs/heads/master@{#36220}
2016-05-12 19:20:04 +00:00
oth
52600c6b1c [interpreter] Add checks for source position to test-bytecode-generator.
Prints source position information alongside bytecode.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1963663002
Cr-Commit-Position: refs/heads/master@{#36171}
2016-05-11 12:22:17 +00:00
mstarzinger
3cc12b4a96 [runtime] Deprecate Runtime_FinalizeClassDefinition entry.
By now the runtime entry function in question is a duplicate of the
existing Runtime_ToFastProperties function. This just gets rid of the
duplication.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1963973003
Cr-Commit-Position: refs/heads/master@{#36161}
2016-05-11 08:31:17 +00:00
gsathya
41d571dfe8 Fix TypedArray Property optimizations
This patch installs %TypedArray% and its prototype on the native
context, and wires them up to each TypedArray subclass. This is later
used to check the holder of length, byteLength and byteOffset is
%Typedarray% and apply the appropriate optimizations.

BUG=chromium:593634
LOG=Y

Review-Url: https://codereview.chromium.org/1949863002
Cr-Commit-Position: refs/heads/master@{#36116}
2016-05-09 19:07:27 +00:00
neis
ca5aa3c86a [interpreter] Always 'continue' loops by jumping forward to end of body.
We sometimes used to continue by jumping _back_ to the condition check at the
top of the loop. After my recent generator-related changes, that check is no
longer at the loop header, so a continue could create an additional loop. In
order to avoid this, we now always set the continue target to be the first
instruction following the loop body.

BUG=

Review-Url: https://codereview.chromium.org/1943383003
Cr-Commit-Position: refs/heads/master@{#36029}
2016-05-04 15:57:40 +00:00
rmcilroy
ac2a17abcb [Interpreter] Use FastCloneShallowObjectStub in CreateObjectLiteral bytecode.
Adapts FastCloneShallowObjectStub to enable it to be used by the
CreateObjectLiteral bytecode.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1922523002
Cr-Commit-Position: refs/heads/master@{#35909}
2016-04-29 14:21:33 +00:00
littledan
3d66e5d1d7 Add checks for detached ArrayBuffers to ArrayBuffer.prototype.slice
These checks ensure that a TypeError is thrown, per spec, rather than
a runtime assert failure.

BUG=v8:4964
R=adamk
LOG=Y

Review-Url: https://codereview.chromium.org/1929123002
Cr-Commit-Position: refs/heads/master@{#35885}
2016-04-28 22:50:56 +00:00
neis
42c0e2ec7c [generators] Perform state dispatch in loop header.
This is necessary to eventually build a turbofan graph.

BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1901713003

Cr-Commit-Position: refs/heads/master@{#35820}
2016-04-27 12:42:10 +00:00
neis
0ff89ea75b Migrate Object.definePropert{ies,y} from v8natives to builtins.
R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1919763002

Cr-Commit-Position: refs/heads/master@{#35761}
2016-04-25 12:24:48 +00:00
neis
17024be077 Migrate Object.getPrototypeOf from v8natives to builtins.
More v8natives cleanup to come...

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1922453002

Cr-Commit-Position: refs/heads/master@{#35759}
2016-04-25 11:45:40 +00:00
rmcilroy
c005029aa4 [Interpreter] Use FastNewSloppyArguments when possible.
Use the FastNewSloppyArgumentsStub in the interpreter when function doesn't have
duplicate parameters.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1909903003

Cr-Commit-Position: refs/heads/master@{#35754}
2016-04-25 09:25:06 +00:00
rmcilroy
c58f328581 [Interpreter] Introduce IncStub and DecStub.
Adds IncStub and DecStub TurboFan code stubs and hooks them up to the
interpreter's Inc and Dec bytecodes (which are used for count
operations, e.g. i++).

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1901083002

Cr-Commit-Position: refs/heads/master@{#35720}
2016-04-22 10:36:33 +00:00
neis
b090715250 Introduce bytecodes for assisting generator suspend and resume.
The new bytecodes replace two runtime functions. They are still unsupported by the bytecode graphbuilder, though.

BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1904933002

Cr-Commit-Position: refs/heads/master@{#35716}
2016-04-22 09:19:00 +00:00
adamk
6a370a6f01 Remove support for Object.observe
The feature was deprecated in M49 and flagged off in M50.
This patch removes it entirely from the codebase.

Review URL: https://codereview.chromium.org/1909433003

Cr-Commit-Position: refs/heads/master@{#35714}
2016-04-22 09:02:41 +00:00
rmcilroy
04927031d0 [Interpreter] Fix typo in generate-bytecode-expectations.
BUG=v8:4681
LOG=N

Review URL: https://codereview.chromium.org/1894073007

Cr-Commit-Position: refs/heads/master@{#35679}
2016-04-20 21:05:42 +00:00
adamk
59546149c6 Remove all non-function-name uses of CONST_LEGACY
Now that all 'const' declarations are of the ES2015 variety, the only
use of CONST_LEGACY is for function name bindings in sloppy mode
named function expressions.

This patch aims to delete all code meant to handle other cases, which
mostly had to do with hole initialization/hole checks. Since function
name bindings are initialized at entry to a function, it's impossible
to ever observe one in an uninitialized state.

To simplify the patch further, it removes the `IMPORT` VariableMode,
as it's not likely to be needed (IMPORT is identical to CONST for
the purpose of VariableMode).

Review URL: https://codereview.chromium.org/1895973002

Cr-Commit-Position: refs/heads/master@{#35632}
2016-04-19 17:04:36 +00:00
rmcilroy
623ad7de88 [Interpreter] Remove register file register and replace with LoadParentFramePointer.
Removes the register file machine register from the interpreter and
replaces it will loads from the parent frame pointer. As part of this
change the raw operand values for register values changes to enable the
interpreter to keep using the operand value as the offset from the
parent frame pointer.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1894063002

Cr-Commit-Position: refs/heads/master@{#35618}
2016-04-19 12:48:41 +00:00
neis
d0ccddd032 First version of the new generators implementation.
Behind --ignition-generators. Does not yet support Turbofan.

TBR=bmeurer@chromium.org
BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1884183002

Cr-Commit-Position: refs/heads/master@{#35584}
2016-04-18 14:13:30 +00:00
yangguo
89d7bfda0d Correctly annotate eval origin.
There were a couple of issues with it:
- interpreter is not supported
- the source position was just accidentally correct for full-codegen
- the eval origin could have been cached

Also fixes a few other places to use AbstractCode.

R=mstarzinger@chromium.org

Committed: https://crrev.com/2f3a171adc9e620c2235bf0562145b9d4eaba66d
Cr-Commit-Position: refs/heads/master@{#35257}

Committed: https://crrev.com/ad4e8a27963b704bb70ec8bac0991c57296b1d16
Cr-Commit-Position: refs/heads/master@{#35481}

Review URL: https://codereview.chromium.org/1854713002

Cr-Commit-Position: refs/heads/master@{#35581}
2016-04-18 13:21:07 +00:00
yangguo
5af0a68442 Revert of Correctly annotate eval origin. (patchset #5 id:80001 of https://codereview.chromium.org/1854713002/ )
Reason for revert:
performance impact

Original issue's description:
> Correctly annotate eval origin.
>
> There were a couple of issues with it:
> - interpreter is not supported
> - the source position was just accidentally correct for full-codegen
> - the eval origin could have been cached
>
> Also fixes a few other places to use AbstractCode.
>
> R=mstarzinger@chromium.org
>
> Committed: https://crrev.com/2f3a171adc9e620c2235bf0562145b9d4eaba66d
> Cr-Commit-Position: refs/heads/master@{#35257}
>
> Committed: https://crrev.com/ad4e8a27963b704bb70ec8bac0991c57296b1d16
> Cr-Commit-Position: refs/heads/master@{#35481}

TBR=mstarzinger@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/1888013002

Cr-Commit-Position: refs/heads/master@{#35491}
2016-04-14 12:46:00 +00:00
yangguo
ad4e8a2796 Correctly annotate eval origin.
There were a couple of issues with it:
- interpreter is not supported
- the source position was just accidentally correct for full-codegen
- the eval origin could have been cached

Also fixes a few other places to use AbstractCode.

R=mstarzinger@chromium.org

Committed: https://crrev.com/2f3a171adc9e620c2235bf0562145b9d4eaba66d
Cr-Commit-Position: refs/heads/master@{#35257}

Review URL: https://codereview.chromium.org/1854713002

Cr-Commit-Position: refs/heads/master@{#35481}
2016-04-14 10:08:15 +00:00
oth
fa2fbcfc2d [interpreter] Update bytecode expectations for ES6 instanceof.
Fixes updating golden files following instanceof change.

BUG=v8:4280
LOG=N
R=rmcilroy@chromium.org,ssanfilippo@chromium.org

Review URL: https://codereview.chromium.org/1858593002

Cr-Commit-Position: refs/heads/master@{#35406}
2016-04-12 08:42:36 +00:00
machenbach
cf951dfb37 Revert of Correctly annotate eval origin. (patchset #4 id:60001 of https://codereview.chromium.org/1854713002/ )
Reason for revert:
[Sheriff] Crashes a layout test:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/5855

Original issue's description:
> Correctly annotate eval origin.
>
> There were a couple of issues with it:
> - interpreter is not supported
> - the source position was just accidentally correct for full-codegen
> - the eval origin could have been cached
>
> Also fixes a few other places to use AbstractCode.
>
> R=mstarzinger@chromium.org
>
> Committed: https://crrev.com/2f3a171adc9e620c2235bf0562145b9d4eaba66d
> Cr-Commit-Position: refs/heads/master@{#35257}

TBR=mstarzinger@chromium.org,yangguo@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/1858773004

Cr-Commit-Position: refs/heads/master@{#35260}
2016-04-05 13:01:17 +00:00
yangguo
2f3a171adc Correctly annotate eval origin.
There were a couple of issues with it:
- interpreter is not supported
- the source position was just accidentally correct for full-codegen
- the eval origin could have been cached

Also fixes a few other places to use AbstractCode.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1854713002

Cr-Commit-Position: refs/heads/master@{#35257}
2016-04-05 11:31:44 +00:00
neis
4edf16ddd9 Fix treatment of rest pattern in array destructuring.
When seeing a rest pattern, we used to get the remaining elements from the
iterator by calling %concat_iterable_to_array on it.  This was wrong because it
caused an observable [[Get]] for @@iterator (which the iterator may not even
provide).

This CL gets rid of the call to %concat_iterable_to_array and does the iteration
manually in a simple while-loop.  It also gets rid of %concat_iterable_to_array
itself because there aren't any other uses of it.

BUG=v8:4759
LOG=n
R=adamk@chromium.org

Review URL: https://codereview.chromium.org/1852703002

Cr-Commit-Position: refs/heads/master@{#35251}
2016-04-05 08:56:51 +00:00
neis
f70b3d3b2c Preserve exception message in iterator finalization.
The parser uses a try-catch in order to record when the client of an iterator
throws.  The exception then used to get rethrown via 'throw', which
unfortunately resulted in the original exception message object getting
overwritten.

This CL solves this as follows:
- add a clear_pending_message flag to TryCatchStatement (set to true in normal
  cases),
- set clear_pending_message to false for the TryCatchStatement used in iterator
  finalization
- change full-codegen, turbofan, and the interpreter to emit the ClearPendingMessage call
  only when the flag is set,
- replace 'throw' with '%ReThrow' in the iterator finalization code, thus
  reusing the (not-cleared) pending message

R=littledan@chromium.org, mstarzinger@chromium.org, yangguo@chromium.org
BUG=v8:4875
LOG=n

Review URL: https://codereview.chromium.org/1842953003

Cr-Commit-Position: refs/heads/master@{#35226}
2016-04-04 08:15:25 +00:00
oth
0c32e98eab [interpreter] A few code coverage improvements.
Improves code coverage of bytecode array builder and constant
array builder.

Fixes initial index for constant pool slice for kQuad operands.

BUG=v8:4280,chromium:599000
LOG=N
TBR=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/1845313002

Cr-Commit-Position: refs/heads/master@{#35201}
2016-04-01 12:09:10 +00:00
jochen
cb7aa79b12 Expose a lower bound of malloc'd memory via heap statistics
We expect that the majority of malloc'd memory held by V8 is allocated
in Zone objects. Introduce an Allocator class that is used by Zones to
manage memory, and allows for querying the current usage.

BUG=none
R=titzer@chromium.org,bmeurer@chromium.org,jarin@chromium.org
LOG=n
TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/1847543002

Cr-Commit-Position: refs/heads/master@{#35196}
2016-04-01 10:01:56 +00:00
littledan
97fce6214e Check for proper types from error handling code
A bug in error printing meant that we failed to do proper type checks
before calling into C++ code, which could lead to RUNTIME_ASSERT
failures if methods are called on alternative receivers. This patch
adds the right type checks.

BUG=chromium:596718
LOG=Y
R=adamk

Review URL: https://codereview.chromium.org/1831053003

Cr-Commit-Position: refs/heads/master@{#35069}
2016-03-25 02:10:02 +00:00
littledan
92a571e546 Add ES2015 RegExp full subclassing semantics behind a flag
This patch implements ES2015 RegExp subclassing semantics, namely the
hardest part where RegExp.prototype.exec and certain flag getters can
be overridden in order to provide different behavior. This change is
hidden behind a new flag, --harmony-regexp-exec. The flag guards the
behavior by installing entirely different implementations of the
methods which follow the new semantics.

Preliminary performance tests show a 3-4x regression in the Octane
RegExp benchmark. The new code doesn't call out into several fast
paths that the old code supported, so this is expected.

The patch is tested mostly by test262, where most RegExp tests are fixed,
with the exception of deliberate spec violations for web compatibility,
and for the 'sticky' flag, which is not dynamically read by this patch
in all cases but rather statically compiled into the RegExp. The latter
will require a follow-on patch to implement. A small additional set of
tests verifies one particular case, mostly to check whether the flag
mechanism works.

R=adamk,yangguo@chromium.org
LOG=Y
BUG=v8:4602

Review URL: https://codereview.chromium.org/1596483005

Cr-Commit-Position: refs/heads/master@{#35068}
2016-03-24 22:27:21 +00:00
rmcilroy
838cea4e4e [Interpreter] Make ignition compiler eagerly.
Makes --ignition cause eager compilation if we aren't building the startup
snapshot.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1811553003

Cr-Commit-Position: refs/heads/master@{#35066}
2016-03-24 18:38:24 +00:00
rmcilroy
bdf953b5cc Revert of [Interpreter] Remove separate Ignition snapshot. (patchset #2 id:20001 of https://codereview.chromium.org/1833643002/ )
Reason for revert:
Makes nosnap bots timeout due to having to rebuild bytecode handlers.

Original issue's description:
> [Interpreter] Remove separate Ignition snapshot.
>
> Removes the seperate Ignition snapshot and build the Ignition bytecode
> handlers in the default snapshot.
>
> BUG=v8:4280
> LOG=N
>
> Committed: https://crrev.com/1798f3fe84faff32ba44e09f6aed79245dd98d80
> Cr-Commit-Position: refs/heads/master@{#35058}

TBR=machenbach@google.com,yangguo@chromium.org,mstarzinger@chromium.org,machenbach@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/1827143002

Cr-Commit-Position: refs/heads/master@{#35059}
2016-03-24 17:13:10 +00:00
rmcilroy
1798f3fe84 [Interpreter] Remove separate Ignition snapshot.
Removes the seperate Ignition snapshot and build the Ignition bytecode
handlers in the default snapshot.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1833643002

Cr-Commit-Position: refs/heads/master@{#35058}
2016-03-24 13:42:12 +00:00
adamk
ed18aa65ea Remove support for legacy const, part 1
Now that ES2015 const has shipped, in Chrome 49, legacy const declarations
are no more. This lets us remove a bunch of code from many parts of the
codebase.

In this patch, I remove parser support for generating legacy const variables
from const declarations. This also removes the special "illegal declaration"
bit from Scope, which has ripples into all compiler backends.

Also gone are any tests which relied on legacy const declarations.

Note that we do still generate a Variable in mode CONST_LEGACY in one case:
function name bindings in sloppy mode. The likely fix there is to add a new
Variable::Kind for this case and handle it appropriately for stores in each
backend, but I leave that for a later patch to make this one completely
subtractive.

Review URL: https://codereview.chromium.org/1819123002

Cr-Commit-Position: refs/heads/master@{#35002}
2016-03-22 17:52:13 +00:00
epertoso
d158bf14b3 [Interpreter] TurboFan implementation of intrinsics.
Introduces a bytecode whose handler executes the equivalent of %_IsArray and %_IsJSReceiver without a runtime call.

BUG=v8:4822
LOG=y

Review URL: https://codereview.chromium.org/1645763003

Cr-Commit-Position: refs/heads/master@{#34983}
2016-03-22 11:36:05 +00:00
oth
48d082af38 [interpreter] Add support for scalable operands.
This change introduces wide prefix bytecodes to support wide (16-bit)
and extra-wide (32-bit) operands. It retires the previous
wide-bytecodes and reduces the number of operand types.

Operands are now either scalable or fixed size. Scalable operands
increase in width when a bytecode is prefixed with wide or extra-wide.

The bytecode handler table is extended to 256*3 entries. The
first 256 entries are used for bytecodes with 8-bit operands,
the second 256 entries are used for bytecodes with operands that
scale to 16-bits, and the third group of 256 entries are used for
bytecodes with operands that scale to 32-bits.

LOG=N
BUG=v8:4747,v8:4280

Review URL: https://codereview.chromium.org/1783483002

Cr-Commit-Position: refs/heads/master@{#34955}
2016-03-21 17:09:49 +00:00