Adds support for calling runtime functions which return a pair of
values. Adds the bytecode CallRuntimePair. Also adds support to TurboFan
for calling stubs which return multiple values.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1568493002
Cr-Commit-Position: refs/heads/master@{#33181}
Requesting reservation of a wasm section for experimentation with
storing source code meta information, such as source code comments,
and also extra inform on presentation of the AST such an `if-block`
pattern being presented as a `when` operation.
The wasm design already defines unrecognized sections to be ignored,
and this reserved section is ignored. This section is only intended to
hold source code meta information and to have no effect on code
execution.
With wasm going live (behind a flag) on v8, I would also like to be
able to give people something to play with in terms of the deployed
binary code being a useful source code. It's all experimental, but I
understand the entire binary format that V8 is currently using is
basically a throwaway, and that the working strategy is to get
something running and then revisit format decisions.
I would like a fixed reserved section number to avoid potential
clashes with other projects - although I am not aware of any other
calls for addition sections beyond the need for debug info. If a fixed
number is not acceptable, then could this patch alternatively ignore
all unrecognized sections and perhaps add the section size to them
all - something which is already noted todo in the design document?
BUG=
Review URL: https://codereview.chromium.org/1565693002
Cr-Commit-Position: refs/heads/master@{#33165}
This increases the size of addressable constant pool entries for jumps
to match other bytecodes using operands indexing the constant pool.
This change also introduces reservations for constant pool entries.
Reservations are used for forward jumps to ensure a constant pool entry
will be available when the jump target (label) is bound and the jump is
patched up in the bytecode array.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1546683002
Cr-Commit-Position: refs/heads/master@{#33125}
Deopt support is added on two levels. On the IR level,
a new ObjectState node is added, which represenents an
object to be materialized. ObjectState nodes appear as
inputs of FrameState and StateValues nodes. On the
instruction select/code-generation level, the
FrameStateDescriptor class handles the nesting
introduced by ObjectState, and ensures that deopt code
with CAPTURED_OBJECT/DUPLICATED_OBJECT entries are
generated similarly to what crankshaft's escape
analysis does.
Two unittests test correctness of the IR level implementation.
Correctness for instruction selection / code generation
is tested by mjsunit tests.
R=jarin@chromium.org,mstarzinger@chromium.org
BUG=v8:4586
LOG=n
Review URL: https://codereview.chromium.org/1485183002
Cr-Commit-Position: refs/heads/master@{#33115}
New bytecodes for making registers with indicies wider than 1-byte
accessible.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1555713002
Cr-Commit-Position: refs/heads/master@{#33091}
According to the ES2015 specification, bound functions are exotic
objects, and thus don't need to be implemented as JSFunctions. So
we introduce a new JSBoundFunction type to represent bound functions
and make them optimizable. This already improves the performance of
calling or constructing bound functions by 10-100x depending on the
use case because we avoid the crazy dance between JavaScript and C++
that was implemented in v8natives.js previously.
There's still room for improvement in the performance of actually
creating bound functions, which is also relevant in practice, but
we already have a plan how to accomplish that later.
The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=chromium:535408, chromium:571299, v8:4629
LOG=n
Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
Cr-Commit-Position: refs/heads/master@{#33042}
Review URL: https://codereview.chromium.org/1542963002
Cr-Commit-Position: refs/heads/master@{#33044}
Reason for revert:
Breaks arm64 sim nosnap: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug/builds/805/steps/Check/logs/function-bind
Original issue's description:
> [runtime] Introduce dedicated JSBoundFunction to represent bound functions.
>
> According to the ES2015 specification, bound functions are exotic
> objects, and thus don't need to be implemented as JSFunctions. So
> we introduce a new JSBoundFunction type to represent bound functions
> and make them optimizable. This already improves the performance of
> calling or constructing bound functions by 10-100x depending on the
> use case because we avoid the crazy dance between JavaScript and C++
> that was implemented in v8natives.js previously.
>
> There's still room for improvement in the performance of actually
> creating bound functions, which is also relevant in practice, but
> we already have a plan how to accomplish that later.
>
> The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
>
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
> BUG=chromium:535408, chromium:571299, v8:4629
> LOG=n
>
> Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
> Cr-Commit-Position: refs/heads/master@{#33042}
TBR=cbruni@chromium.org,hpayer@chromium.org,yangguo@chromium.org,akos.palfi@imgtec.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:535408, chromium:571299, v8:4629
Review URL: https://codereview.chromium.org/1552473002
Cr-Commit-Position: refs/heads/master@{#33043}
According to the ES2015 specification, bound functions are exotic
objects, and thus don't need to be implemented as JSFunctions. So
we introduce a new JSBoundFunction type to represent bound functions
and make them optimizable. This already improves the performance of
calling or constructing bound functions by 10-100x depending on the
use case because we avoid the crazy dance between JavaScript and C++
that was implemented in v8natives.js previously.
There's still room for improvement in the performance of actually
creating bound functions, which is also relevant in practice, but
we already have a plan how to accomplish that later.
The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=chromium:535408, chromium:571299, v8:4629
LOG=n
Review URL: https://codereview.chromium.org/1542963002
Cr-Commit-Position: refs/heads/master@{#33042}
Changes LoadGlobal, StoreGlobal, LoadNamedProperty, and StoreNamedProperty to accept
the name of variable instead of index into the constant pool entry. Also made
GetConstantPoolEntry as a private function since it is no longer used outside of
BytecodeArrayBuilder.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1546643002
Cr-Commit-Position: refs/heads/master@{#33020}
Adds support for deleting a variable in a lookup slot. Adds a new bytecode,
its implementation and tests. Also adds support for this bytecode to the
bytecode graph builder.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1542083002
Cr-Commit-Position: refs/heads/master@{#33019}
A pre-requisite for this change was changing the interpreter to use
Runtime::ForInStep to bring the interpreter implementation closer
to the turbofan implementation. Also required to flatten out the
cache parameters into the interpreter frame for de-opt.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1531693002
Cr-Commit-Position: refs/heads/master@{#32986}
Make WasmModule free it's own memory, avoid mixing stack and
heap allocations in tests. This fixes several memory leaks.
Fix several signed compare issues.
Fix several floating point warnings.
Don't setup heap as external, as then the GC can't collect it.
Disable some tests that fail under ASAN.
R=ahaas@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1538543002
Cr-Commit-Position: refs/heads/master@{#32948}
Fixing several memory leaks in wasm unittests.
Avoiding std::vector::data() as it isn't supported on all
compilers on the bots.
Use EXCEPT_TRUE / EXPECT_FALSE to avoid warnings on some compilers when testing boolean equality.
R=ahaas@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1536603003
Cr-Commit-Position: refs/heads/master@{#32940}
Adds support for loading and storing lookup variables.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1524803003
Cr-Commit-Position: refs/heads/master@{#32913}
Move replacements out of virtual object. Replacements are
global to the graph and are not dependent on the virtual
state (after they are discovered).
R=mstarzinger@chromium.org
BUG=v8:4586
LOG=n
Review URL: https://codereview.chromium.org/1527533002
Cr-Commit-Position: refs/heads/master@{#32838}
As discussed in person, this adds the code from v8-native-prototype into
V8 proper, guarded by GYP flags that do not build the code by default.
Passing wasm=on to 'make' or setting v8_wasm as a GYP flag activates
building of this code.
An additional header file is added to and exported from the compiler
directory, src/compiler/wasm-compiler.h. This exposes a limited interface
with opaque Node and Graph types to the decoder to build TF graphs, as
well as functions to compile WASM graphs.
The mjsunit tests added are blacklisted because they fail without the
WASM object exposed to JS, which is also disabled by the build config
option.
This corresponds closely to 5981e06ebc, with some formatting fixes and moving some files into src/compiler.
R=mstarzinger@chromium.org, bradnelson@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1504713014
Cr-Commit-Position: refs/heads/master@{#32794}
Removes the dummy control and effect edges from the RMA Call nodes. This
requires a change to the node matchers to allow them to cope with nodes
which don't have control or effect matchers.
Review URL: https://codereview.chromium.org/1518673002
Cr-Commit-Position: refs/heads/master@{#32752}
Nowadays, representation inference and simplified lowering can insert the
right truncations based on the use.
Review URL: https://codereview.chromium.org/1512243002
Cr-Commit-Position: refs/heads/master@{#32747}
MachineType is now a class with two enum fields:
- MachineRepresentation
- MachineSemantic
Both enums are usable on their own, and this change switches some places from using MachineType to use just MachineRepresentation. Most notably:
- register allocator now uses just the representation.
- Phi and Select nodes only refer to representations.
Review URL: https://codereview.chromium.org/1513543003
Cr-Commit-Position: refs/heads/master@{#32738}
Adds implementation and tests for CreateObjectLiteral, CreateArrayLiteral and CreateRegExpLiteral
to bytecode graph builder. Also changes these bytecodes to expect three operands instead of using
accumulator to pass one of the operands. This is done to avoid looking into the earlier nodes to
fetch operands in the bytecode graph builder. Also adds support for wide variant of these
bytecodes to bytecode generator and bytecode graph builder.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1503963002
Cr-Commit-Position: refs/heads/master@{#32710}
Extract ToBoolean hints from the fullcodegen code object and put them
into the ToBoolean nodes created by the AstGraphBuilder. We currently
do not yet consume this feedback, that will be done in a followup CL.
R=mstarzinger@chromium.org
BUG=v8:4583
LOG=n
Review URL: https://codereview.chromium.org/1494973002
Cr-Commit-Position: refs/heads/master@{#32576}
This moves the proper handling for the end node withing the constructed
graph into the RawMachineAssembler. This simplifies all assemblers and
makes the handling of {Start} and {End} symmetrical.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1493963003
Cr-Commit-Position: refs/heads/master@{#32563}
Also remove the ResultMode from ToBooleanStub and always return true or
false and use the same mechanism in fullcodegen. This is in preparation
for adding ToBoolean hints to TurboFan.
Drive-by-fix: We can use the power of the ToBooleanIC in TurboFan now
that the ResultMode is gone (and the runtime always returns true or
false from the miss handler).
R=mstarzinger@chromium.org
BUG=v8:4583
LOG=n
Review URL: https://codereview.chromium.org/1491223002
Cr-Commit-Position: refs/heads/master@{#32524}
We can constant fold %_IsJSReceiver(x) based on whether x is always a
receiver or can never be a receiver. This is important as
%_IsJSReceiver is inserted by the JSInliner.
R=jarin@chromium.org
BUG=v8:4544
LOG=n
Review URL: https://codereview.chromium.org/1486383003
Cr-Commit-Position: refs/heads/master@{#32519}
This is the first part of escape analysis for turbofan.
At the moment, there is no deopt support, and support
for loops is partial (only binary Phis are handled).
The CL includes 4 unittests.
There are also 8 new mjsunit tests, some of which are
skiped as they require features not yet implemented.
BUG=v8:4586
LOG=n
Review URL: https://codereview.chromium.org/1457683003
Cr-Commit-Position: refs/heads/master@{#32498}
