Commit Graph

121 Commits

Author SHA1 Message Date
bmeurer
b98d64f909 [turbofan] Extend LoadElimination to introduce TypeGuards.
If the type of a tracked field or element value is less precise than the
advertised type of the field or element load, then we replace the load
operation with a TypeGuard that guards the advertised type.

R=jarin@chromium.org
BUG=v8:5267

Review-Url: https://codereview.chromium.org/2295643002
Cr-Commit-Position: refs/heads/master@{#39032}
2016-08-31 05:48:28 +00:00
ahaas
552601bb5f [turbofan] Lower "-0.0 - x" in the MachineOperatorReducer.
Up until now "-0.0 - x" was lowered in the instruction selector. I moved
the lowering now to the MachineOperatorReducer.

I did not remove the lowering from the instruction selector yet, I would
prefer to do that in a separate CL.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2226663002
Cr-Commit-Position: refs/heads/master@{#38417}
2016-08-08 08:40:36 +00:00
bmeurer
2c8b51448c [turbofan] Add NumberOperationHint for speculative number operations.
Introduce a dedicated NumberOperationHint enum that represents the
feedback we can use for speculative number operations.

BUG=v8:4930

Review-Url: https://codereview.chromium.org/2220573002
Cr-Commit-Position: refs/heads/master@{#38411}
2016-08-08 06:10:45 +00:00
epertoso
524abd76b7 [turbofan] Adds speculative operator for bitwise and, or and xor.
BUG=

Review-Url: https://codereview.chromium.org/2201073002
Cr-Commit-Position: refs/heads/master@{#38246}
2016-08-02 13:43:58 +00:00
jyan
77c9cb8341 [compiler] [wasm] Introduce Word32/64ReverseBytes as TF Optional Opcode
This commit fixes wasm little-endian load issue on big-endian platform
by introducing reverse byte operation immediately after a load.

R=bmeurer@chromium.org, titzer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2045943002
Cr-Commit-Position: refs/heads/master@{#38183}
2016-07-29 19:33:28 +00:00
epertoso
79ebd37d65 [turbofan] Adds speculative opcodes for shift right.
Drive-by fix: actually match the hint in the IsSpeculativeBinopMatcher.

Review-Url: https://codereview.chromium.org/2191883002
Cr-Commit-Position: refs/heads/master@{#38176}
2016-07-29 11:04:24 +00:00
ivica.bogosavljevic
580fdf3c05 Implement UnaligedLoad and UnaligedStore turbofan operators.
Implement UnalignedLoad and UnalignedStore optional
turbofan operators and use them in WasmCompiler for unaligned
memory access.

BUG=

Review-Url: https://codereview.chromium.org/2122853002
Cr-Commit-Position: refs/heads/master@{#37988}
2016-07-22 20:56:24 +00:00
bmeurer
ba092fb09a [turbofan] Change Float64Max/Float64Min to JavaScript semantics.
So far we don't have a useful way to inline Math.max or Math.min in
TurboFan optimized code. This adds new operators NumberMax and NumberMin
and changes the Float64Max/Float64Min operators to have JavaScript
semantics instead of the C++ semantics that it had previously.

This also removes support for recognizing the tenary case in the
CommonOperatorReducer, since that doesn't seem to have any positive
impact (and actually doesn't show up in regular JavaScript, where
people use Math.max/Math.min instead).

Drive-by-fix: Also nuke the unused Float32Max/Float32Min operators.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2170343002
Cr-Commit-Position: refs/heads/master@{#37971}
2016-07-22 08:25:11 +00:00
epertoso
d93fd41aaa [turbofan] Introduces the SpeculativeNumberShiftLeft opcode.
Typed lowering now produces SpeculativeNumberShiftLeft for JSShiftLeft if the type feedback is kSignedSmall or kSigned32.

BUG=v8:4583
LOG=n

Review-Url: https://codereview.chromium.org/2150553002
Cr-Commit-Position: refs/heads/master@{#37762}
2016-07-14 12:49:32 +00:00
bmeurer
d9cb130d0b [turbofan] Strength reduction for Int32MulWithOverflow.
Add simple strength reduction for Int32MulWithOverflow to the
MachineOperatorReducer.

R=mvstanton@chromium.org

Review-Url: https://codereview.chromium.org/2139733003
Cr-Commit-Position: refs/heads/master@{#37751}
2016-07-14 09:25:34 +00:00
bmeurer
0a0fe8fb8b [builtins] Unify most of the remaining Math builtins.
Import fdlibm versions of acos, acosh, asin and asinh, which are more
precise and produce the same result across platforms (we were using
libm versions for asin and acos so far, where both speed and precision
depended on the operating system so far). Introduce appropriate TurboFan
operators for these functions and use them both for inlining and for the
generic builtin.

Also migrate the Math.imul and Math.fround builtins to TurboFan builtins
to ensure that their behavior is always exactly the same as the inlined
TurboFan version (i.e. C++ truncation semantics for double to float
don't necessarily meet the JavaScript semantics).

For completeness, also migrate Math.sign, which can even get some nice
love in TurboFan.

Drive-by-fix: Some alpha-sorting on the Math related functions, and
cleanup the list of Math intrinsics that we have to export via the
native context currently.

BUG=v8:3266,v8:3496,v8:3509,v8:3952,v8:5169,v8:5170,v8:5171,v8:5172
TBR=rossberg@chromium.org
R=franzih@chromium.org

Review-Url: https://codereview.chromium.org/2116753002
Cr-Commit-Position: refs/heads/master@{#37476}
2016-07-01 11:13:02 +00:00
mvstanton
cede9ce5e1 [builtins] Unify Cosh, Sinh and Tanh as exports from flibm
BUG=v8:5086

Review-Url: https://codereview.chromium.org/2083573002
Cr-Commit-Position: refs/heads/master@{#37424}
2016-06-30 08:44:46 +00:00
bmeurer
be32c055f1 [turbofan] Drop the obsolete TypeGuard operator.
The only real use case left for TypeGuard was the renaming inside the
LoadElimination, but this case only occurs in dead code (guarded by a
previous Check), so it's not relevant, and we can drop the TypeGuard
operator completely.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2108793003
Cr-Commit-Position: refs/heads/master@{#37361}
2016-06-29 06:36:05 +00:00
bmeurer
e607e12ea0 [turbofan] Introduce Float64Pow and NumberPow operators.
Introduce a new machine operator Float64Pow that for now is backed by
the existing MathPowStub to start the unification of Math.pow, and at
the same time address the main performance issue that TurboFan still has
with the imaging-darkroom benchmark in Kraken.

Also migrate the Math.pow builtin itself to a TurboFan builtin and
remove a few hundred lines of hand-written platform code for special
handling of the fullcodegen Math.pow version.

BUG=v8:3599,v8:5086,v8:5157

Review-Url: https://codereview.chromium.org/2103733003
Cr-Commit-Position: refs/heads/master@{#37323}
2016-06-28 10:26:10 +00:00
bmeurer
f50a601ffa [turbofan] Introduce simplified operator NumberAbs.
Add NumberAbs operator to implement an inline version of Math.abs, that
can be optimized and eliminated. We don't use any speculation here, but
for now stick to the information we can infer (this way we avoid the
inherent deopt loops that Crankshaft has around Math.abs).

CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
R=jarin@chromium.org
BUG=v8:5086

Review-Url: https://codereview.chromium.org/2096403002
Cr-Commit-Position: refs/heads/master@{#37306}
2016-06-28 04:37:02 +00:00
bmeurer
c87168bc8c [builtins] Introduce proper Float64Tan operator.
Import base::ieee754::tan() from fdlibm and introduce Float64Tan TurboFan
operator based on that, similar to what we do for Float64Cos and Float64Sin.
Rewrite Math.tan() as TurboFan builtin and use those operators to also
inline Math.tan() into optimized TurboFan functions.

Drive-by-fix: Kill the %_ConstructDouble intrinsics, and provide only
the %ConstructDouble runtime entry for writing tests.

BUG=v8:5086,v8:5126
R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2083453002
Cr-Commit-Position: refs/heads/master@{#37087}
2016-06-20 05:51:52 +00:00
bmeurer
c781e83194 [builtins] Introduce proper Float64Cos and Float64Sin.
Import base::ieee754::cos() and base::ieee754::sin() from fdlibm and
introduce Float64Cos and Float64Sin TurboFan operator based on that,
similar to what we do for Float64Log. Rewrite Math.cos() and Math.sin()
as TurboFan builtins and use those operators to also inline Math.cos()
and Math.sin() into optimized TurboFan functions.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
R=mvstanton@chromium.org
BUG=v8:5086,v8:5118

Review-Url: https://codereview.chromium.org/2073123002
Cr-Commit-Position: refs/heads/master@{#37072}
2016-06-17 15:24:15 +00:00
mvstanton
4d4eb61111 [builtins] Unify Atanh, Cbrt and Expm1 as exports from flibm.
BUG=v8:5103

Review-Url: https://codereview.chromium.org/2068743002
Cr-Commit-Position: refs/heads/master@{#37058}
2016-06-17 09:14:38 +00:00
bmeurer
d5f2ac5e33 [builtins] Introduce proper Float64Exp operator.
Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
TurboFan operator based on that, similar to what we do for Float64Log.
Rewrite Math.exp() as TurboFan builtin and use that operator to also
inline Math.exp() into optimized TurboFan functions.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108,chromium:620786
R=mvstanton@chromium.org

Committed: https://crrev.com/93e26314afc9da9b5b8bd998688262444ed73260
Review-Url: https://codereview.chromium.org/2077533002
Cr-Original-Commit-Position: refs/heads/master@{#37037}
Cr-Commit-Position: refs/heads/master@{#37047}
2016-06-17 05:20:59 +00:00
machenbach
789b0ad77a Revert of [builtins] Introduce proper Float64Exp operator. (patchset #5 id:80001 of https://codereview.chromium.org/2077533002/ )
Reason for revert:
[Sheriff] Leads to some different rounding as it seems in some audio layout tests. Please rebase upstream first if intended:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/7508

Original issue's description:
> [builtins] Introduce proper Float64Exp operator.
>
> Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
> TurboFan operator based on that, similar to what we do for Float64Log.
> Rewrite Math.exp() as TurboFan builtin and use that operator to also
> inline Math.exp() into optimized TurboFan functions.
>
> BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108
> R=mvstanton@chromium.org
>
> Committed: https://crrev.com/93e26314afc9da9b5b8bd998688262444ed73260
> Cr-Commit-Position: refs/heads/master@{#37037}

TBR=mvstanton@chromium.org,ahaas@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108

Review-Url: https://codereview.chromium.org/2070813002
Cr-Commit-Position: refs/heads/master@{#37039}
2016-06-16 12:49:53 +00:00
bmeurer
93e26314af [builtins] Introduce proper Float64Exp operator.
Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
TurboFan operator based on that, similar to what we do for Float64Log.
Rewrite Math.exp() as TurboFan builtin and use that operator to also
inline Math.exp() into optimized TurboFan functions.

BUG=v8:3266,v8:3468,v8:3493,v8:5086,v8:5108
R=mvstanton@chromium.org

Review-Url: https://codereview.chromium.org/2077533002
Cr-Commit-Position: refs/heads/master@{#37037}
2016-06-16 12:10:27 +00:00
mvstanton
d9bf520a22 [builtins] Introduce proper Float64Log2 and Float64Log10 operators.
BUG=v8:5095

Review-Url: https://codereview.chromium.org/2063693002
Cr-Commit-Position: refs/heads/master@{#37035}
2016-06-16 11:25:06 +00:00
bmeurer
ed0039a72e [turbofan] Unify the PlainPrimitive as Number treatment.
Now that we have the PlainPrimitiveToNumber operator(s), we can unify
all the places where we expect a number, but can also safely handle any
plain-primitive (via ToNumber truncation).

Drive-by-fix: Also handle Math.min consistently with Math.max.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2064953004
Cr-Commit-Position: refs/heads/master@{#36984}
2016-06-15 05:45:53 +00:00
bmeurer
89d8c57b9c [builtins] Introduce proper Float64Atan and Float64Atan2 operators.
Import base::ieee754::atan() and base::ieee754::atan2() from fdlibm and
introduce Float64Atan and Float64Atan2 TurboFan operators based on those,
similar to what we already did for Float64Log and Float64Log1p. Rewrite
Math.atan() and Math.atan2() as TurboFan builtin and use the operators
to also inline Math.atan() and Math.atan2() into optimized TurboFan functions.

R=yangguo@chromium.org
BUG=v8:5086,v8:5095

Review-Url: https://codereview.chromium.org/2065503002
Cr-Commit-Position: refs/heads/master@{#36916}
2016-06-13 07:08:17 +00:00
bmeurer
7ceed92ac0 [builtins] Introduce proper Float64Log1p operator.
Import base::ieee754::log1p() from fdlibm and introduce a Float64Log1p
TurboFan operator based on that, similar to what we do for Float64Log.
Rewrite Math.log1p() as TurboFan builtin and use that operator to also
inline Math.log1p() into optimized TurboFan functions.

Also unify the handling of the special IEEE 754 functions somewhat in
the TurboFan backends. At some point we can hopefully express this
completely in the InstructionSelector (once we have an idea what to do
with the ST(0) return issue on IA-32/X87).

Drive-by-fix: Add some more test coverage for the log function.

R=yangguo@chromium.org
BUG=v8:5086,v8:5092

Review-Url: https://codereview.chromium.org/2060743002
Cr-Commit-Position: refs/heads/master@{#36914}
2016-06-13 05:48:02 +00:00
jarin
2890137bdc [turbofan] Introduce PlainPrimitiveToNumber.
This should solve the problem with missing checkpoints after JSToNumber
(PlainPrimitiveToNumber is marked no-write, so the frame-state
propagation should see through it.)

Unfortunately, this also duplicates the word32- and float64-truncation
magic that we have for JSToNumber in "simplified lowering".

Review-Url: https://codereview.chromium.org/2059653002
Cr-Commit-Position: refs/heads/master@{#36881}
2016-06-10 07:45:23 +00:00
mstarzinger
28e6753acc [turbofan] Remove frame state input from speculative ops.
These speculative binary operators are simplified operators and should
not need a frame state themselves. These eager bailout points can by now
be found via checkpoints in the graph, whereas frame states attached to
nodes directly should always represent lazy bailout points.

R=jarin@chromium.org
BUG=v8:5021

Review-Url: https://codereview.chromium.org/2037673002
Cr-Commit-Position: refs/heads/master@{#36705}
2016-06-03 10:02:04 +00:00
jarin
216bcf9fb3 [turbofan] Initial version of number type feedback.
This introduces optimized number operations based on type feedback.

Summary of changes:

1. Typed lowering produces SpeculativeNumberAdd/Subtract for JSAdd/Subtract if
   there is suitable feedback. The speculative nodes are connected to both the
   effect chain and the control chain and they retain the eager frame state.

2. Simplified lowering now executes in three phases:
  a. Propagation phase computes truncations by traversing the graph from uses to
     definitions until checkpoint is reached. It also records type-check decisions
     for later typing phase, and computes representation.
  b. The typing phase computes more precise types base on the speculative types (and recomputes
     representation for affected nodes).
  c. The lowering phase performs lowering and inserts representation changes and/or checks.

3. Effect-control linearization lowers the checks to machine graphs.

Notes:

- SimplifiedLowering will be refactored to have handling of each operation one place and
  with clearer input/output protocol for each sub-phase. I would prefer to do this once
  we have more operations implemented, and the pattern is clearer.

- The check operations (Checked<A>To<B>) should have some flags that would affect
  the kind of truncations that they can handle. E.g., if we know that a node produces
  a number, we can omit the oddball check in the CheckedTaggedToFloat64 lowering.

- In future, we want the typer to reuse the logic from OperationTyper.

BUG=v8:4583
LOG=n

Review-Url: https://codereview.chromium.org/1921563002
Cr-Commit-Position: refs/heads/master@{#36674}
2016-06-02 09:23:13 +00:00
bmeurer
5a3a6dafae [turbofan] Add new StringFromCharCode simplified operator.
We use StringFromCharCode to optimize calls to String.fromCharCode with
a single Number argument for now. We will use it to also implement the
charAt method on the String prototype.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2037453003
Cr-Commit-Position: refs/heads/master@{#36668}
2016-06-02 08:01:48 +00:00
bmeurer
c5a71f029f [turbofan] Turn common Guard operator into simplified TypeGuard.
The type guard should never be used after the effect/control
linearization pass, so making it a simplified operator better
expresses the intended use. Also this way none of the common
operators actually has any dependency on the type system.

Drive-by-fix: Properly print the type parameter to a TypeGuard operator.

BUG=chromium:612142
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/1994503002
Cr-Commit-Position: refs/heads/master@{#36304}
2016-05-18 06:19:30 +00:00
bmeurer
fa7460adbc [turbofan] Fix optimized lowering of Math.imul.
We eagerly inserted Int32Mul for Math.imul during builtin lowering and
messed up with the types, which confused the representation selection.
This adds a proper NumberImul operator, and fixes the builtin reducer to
do the right thing according to the spec.

R=mstarzinger@chromium.org
BUG=v8:5006
LOG=n

Review-Url: https://codereview.chromium.org/1971163002
Cr-Commit-Position: refs/heads/master@{#36219}
2016-05-12 18:43:32 +00:00
bmeurer
8e5e6333cf [turbofan] Remove obsolete EffectSet common operator.
This operator was initially designed to handle arbitrary effect merging
for effect relaxation, but we don't do that (at least currently). So no
need to keep the dead operator around.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/1954983002
Cr-Commit-Position: refs/heads/master@{#36063}
2016-05-06 07:46:44 +00:00
bmeurer
0231a7efa2 [turbofan] Introduce TruncateTaggedToWord32 simplified operator.
This allows us to get rid of the "push TruncateFloat64ToInt32 into Phi"
trick that was used in the MachineOperatorReducer to combine the
ChangeTaggedToFloat64 and TruncateFloat64ToInt32 operations. Instead of
doing that later, we can just introduce the proper operator during the
representation selection directly.

Also separate the TruncateFloat64ToInt32 machine operator, which had two
different meanings depending on a flag (either JavaScript truncation or
C++ style round to zero). Now there's a TruncateFloat64ToWord32 which
represents the JavaScript truncation (implemented via TruncateDoubleToI
macro + code stub) and the RoundFloat64ToInt32, which implements the C++
round towards zero operation (in the same style as the other WebAssembly
driven Round* machine operators).

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1919513002

Cr-Commit-Position: refs/heads/master@{#35743}
2016-04-24 11:41:20 +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
ahaas
40bdbef975 [wasm] Int64Lowering of Int64Mul on ia32 and arm.
Int64Mul is lowered to a new turbofan operator, Int32MulPair. The new
operator takes 4 inputs an generates 2 outputs. The inputs are the low
word of the left input, high word of the left input, the low word of the
right input, and high word of the right input. The ouputs are the low
and high word of the result of the multiplication.

R=titzer@chromium.org, v8-arm-ports@googlegroups.com

Review URL: https://codereview.chromium.org/1807273002

Cr-Commit-Position: refs/heads/master@{#35131}
2016-03-30 10:40:06 +00:00
jarin
e1bd9af173 [turbofan] Add more sanity checks to representation inference.
The CL also add guard nodes to places where we assume that certain
values are numbers.

Review URL: https://codereview.chromium.org/1821133002

Cr-Commit-Position: refs/heads/master@{#34977}
2016-03-22 06:50:52 +00:00
ahaas
7f19628a5b [wasm] Int64Lowering of Word64Ctz.
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1806593003

Cr-Commit-Position: refs/heads/master@{#34811}
2016-03-16 12:16:00 +00:00
ahaas
33c08596e1 [wasm] Int64Lowering of Int64Sub on ia32 and arm.
Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
operator takes 4 inputs an generates 2 outputs. The inputs are the low
word of the left input, high word of the left input, the low word of the
right input, and high word of the right input. The ouputs are the low
and high word of the result of the subtraction.

The implementation is very similar to the implementation of Int64Add.

@v8-arm-ports: please take a careful look at the implementation of sbc
in the simulator.

R=titzer@chromium.org, v8-arm-ports@googlegroups.com

Review URL: https://codereview.chromium.org/1778893005

Cr-Commit-Position: refs/heads/master@{#34808}
2016-03-16 10:58:05 +00:00
ahaas
b484cc12f3 [wasm] Int64Lowering of I64ReinterpretF64.
The implementation is done by storing to and loading from memory.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1804953002

Cr-Commit-Position: refs/heads/master@{#34784}
2016-03-15 12:18:12 +00:00
ahaas
2e6f3e8607 [wasm] Int64Lowering of Word64Popcnt.
Word64Popcnt is lowered to Word32Popcnt(low-word) + Word32Popcnt(high_word).
Since the optional Word64Popcnt operator does not exist on 32 bit platforms,
I introduced a new operator "Word64PopcntPlaceholder" which is generated
in the WasmCompiler and then lowered in the Int64Lowering.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1803453003

Cr-Commit-Position: refs/heads/master@{#34777}
2016-03-15 10:42:08 +00:00
ahaas
1b23079936 [wasm] Int64Lowering of Int64Add on ia32 and arm.
Int64Add is lowered to a new turbofan operator, Int32AddPair. The new
operator takes 4 inputs an generates 2 outputs. The inputs are the low
word of the left input, high word of the left input, the low word of the
right input, and high word of the right input. The ouputs are the low
and high word of the result of the addition.

R=titzer@chromium.org, v8-arm-ports@googlegroups.com

Review URL: https://codereview.chromium.org/1778493004

Cr-Commit-Position: refs/heads/master@{#34747}
2016-03-14 15:34:19 +00:00
ahaas
240b7db9c7 [wasm] Int64Lowering of I64ShrU and I64ShrS on ia32.
I implemented I64ShrU and I64ShrS the same as I64Shl in https://codereview.chromium.org/1756863002

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1768233002

Cr-Commit-Position: refs/heads/master@{#34630}
2016-03-09 16:38:43 +00:00
ahaas
ddc626e1cf [wasm] Int64Lowering of I64Shl on ia32.
I64Shl is lowered to a new turbofan operator, WasmWord64Shl. The new
operator takes 3 inputs, the low-word input, the high-word input, and
the shift, and produces 2 output, the low-word output and the high-word
output.

At the moment I implemented the lowering only for ia32, but I think the
CL is already big enough. I will add the other platforms in separate
CLs.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1756863002

Cr-Commit-Position: refs/heads/master@{#34546}
2016-03-07 15:19:44 +00:00
ahaas
a8d5d17659 [wasm] Added I64Xor to the Int64Lowering.
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1723613002

Cr-Commit-Position: refs/heads/master@{#34241}
2016-02-24 09:52:52 +00:00
ahaas
4ddf252e85 [wasm] Unittest for Int64Lowering.
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1714793003

Cr-Commit-Position: refs/heads/master@{#34213}
2016-02-23 15:33:13 +00:00
bmeurer
6b2001b6b7 [turbofan] Introduce proper ObjectIsReceiver operator.
Avoid the hacking in JSIntrinsicLowering and provide a proper simplified
operator ObjectIsReceiver instead that is used to implement %_IsJSReceiver
which is used by our JavaScript builtins and the JSInliner.

R=jarin@chromium.org
BUG=v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1657863004

Cr-Commit-Position: refs/heads/master@{#33675}
2016-02-02 11:43:02 +00:00
rmcilroy
42718a4c88 Remove dummy control / effect edges from RMA Load / Store / Div nodes.
Review URL: https://codereview.chromium.org/1510173004

Cr-Commit-Position: refs/heads/master@{#32762}
2015-12-10 17:07:41 +00:00
rmcilroy
c4745aa187 Remove dummy control / effect edges from RMA Call nodes.
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}
2015-12-10 13:36:28 +00:00
jarin
bb2a830deb [turbofan] Make MachineType a pair of enums.
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}
2015-12-10 09:03:53 +00:00
mythria
b587aa2bc7 [Interpreter] Add support for cast operators to bytecode graph builder and
an optomization to remove redundant cast operations.

1. Adds an optimization to remove redundant ToBoolean and ToName operations.
2. Adds implementation and tests for cast operatorts to bytecode graph builder.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1468003002

Cr-Commit-Position: refs/heads/master@{#32408}
2015-11-30 13:50:20 +00:00