Reason for revert:
Breaks wasm benchmark (http://crbug.com/v8/5798).
Original issue's description:
> [turbofan] Improve codegen for 8- and 16-bit memory comparisons on Intel platforms
>
> Recognize and emit in-memory comparisons of 8-bit and 16-bit values with
> immediate values that fit.
>
> LOG=N
> R=epertoso@chromium.org
>
> Review-Url: https://codereview.chromium.org/2605863002
> Cr-Commit-Position: refs/heads/master@{#41971}
> Committed: be11812c53TBR=danno@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
Review-Url: https://codereview.chromium.org/2618443003
Cr-Commit-Position: refs/heads/master@{#42092}
Add a more efficient encoding for state values that have a large number of
optimized-out inputs.
Review-Url: https://codereview.chromium.org/2509623002
Cr-Commit-Position: refs/heads/master@{#42088}
This makes the context allocation less pessimistic in case of name
clash.
This is also required for being able to skip inner functions.
BUG=v8:5501, v8:5516
Review-Url: https://codereview.chromium.org/2610823003
Cr-Commit-Position: refs/heads/master@{#42087}
We need to check both sides for abstract equality of receivers in optimized
code, otherwise we don't handle implicit conversions and undetectable
objects correctly.
R=jarin@chromium.org
BUG=v8:5802
Review-Url: https://codereview.chromium.org/2612213002
Cr-Commit-Position: refs/heads/master@{#42085}
Add a feedback vector slot for computed property names in object
and class literals. Introduce new slot kind for storing
computed property names.
Change StaDataPropertyInLiteral to use the accumulator (again), so
we don't exceed Bytecodes::kMaxOperands.
We assume that most computed property names are
symbols. Therefore we should see performance
improvements, even if we deal with monomorphic ICs only.
This CL only collects feedback but does not use
it in Reduce() yet.
BUG=v8:5624
Review-Url: https://codereview.chromium.org/2587393006
Cr-Commit-Position: refs/heads/master@{#42082}
port 72c370767226cf573d316655b1d3e3d3d699cc9b(r42034)
original commit message:
Currently the CompileLazy builtin checks the SFI expliciltly for FCG code. This means
if the SFI has bytecode we have to go through to the runtime to install the
interpreter entry trampoline into the JSFunction object.
Modify the builtin to always put the SFI code object into the JSFunction unless it's
the lazy compile stub on the SFI as well.
BUG=
Review-Url: https://codereview.chromium.org/2614533003
Cr-Commit-Position: refs/heads/master@{#42081}
port d3ed71ed87426046afe8938592588eeaa92ec7a9(r42021)
original commit message:
Don't fallback to the %StrictEqual / %Equal runtime functions for the
generic CompareIC slow path, but use the (new) StrictEqual and Equal
builtins instead. This avoids a performance cliff when mixing input
types for strict equality sites.
BUG=
Review-Url: https://codereview.chromium.org/2612693002
Cr-Commit-Position: refs/heads/master@{#42080}
For benchmarks with multiple measurements (e.g. runtime, compile
time, generated code size), in case of error, we'd get only the
last portion of the name ("Compile"), which is ambiguous and makes
debugging dificult. This change includes the full name, e.g.
"Unity/Physics/Compile".
BUG=
Review-Url: https://codereview.chromium.org/2615623003
Cr-Commit-Position: refs/heads/master@{#42078}
Add a more low level BranchIfFastPath to take the native_context and
promise_fun as args and change the existing one to use this.
BUG=v8:5343
Review-Url: https://codereview.chromium.org/2592933004
Cr-Commit-Position: refs/heads/master@{#42075}
This moves the initialization of [[HomeObject]] for constructors from
the %DefineClass runtime function into the bytecode generator, and
makes it conditional (resolving an old TODO). As part of this refactor,
avoid a load of "prototype" by returning the class prototype from
%DefineClass.
This is one of many steps in moving more of class definition into
bytecode.
R=rmcilroy@chromium.org
Review-Url: https://codereview.chromium.org/2610683003
Cr-Commit-Position: refs/heads/master@{#42072}
Remove a bunch of unnecessary v8:: prefixes in include/v8.h.
Some are still necessary for disambiguation purposes (e.g., between
bool Value() and v8::Value, or between v8::Isolate and
v8::internal::Isolate), but many aren't.
BUG=None
Review-Url: https://codereview.chromium.org/2605103003
Cr-Commit-Position: refs/heads/master@{#42071}
This removes all the promise allocation related methods from the CSA
and moves them PromiseBuiltinsAssembler with some edits.
BUG=v8:5343
Review-Url: https://codereview.chromium.org/2604273003
Cr-Commit-Position: refs/heads/master@{#42070}
Recognize the special
NumberFloor(NumberDivide(lhs, rhs))
subgraph in TypedOptimization, where both lhs and rhs are in the
Unsigned32 range, and the result is a PlainNumber, and replace the
NumberFloor with a NumberToUint32 truncation.
This could be done in a cleaner way if we have a dedicated type for all
double values in the Unsigned32 range, but that would complicate the
type system quite a bit.
R=jarin@chromium.org
BUG=v8:5267
Review-Url: https://codereview.chromium.org/2614663002
Cr-Commit-Position: refs/heads/master@{#42063}
mjsunit/big-object-literal will exhaust the stack in debug builds,
due to different compiler settings. It will work in optdebug.
This disables for both. Adding an 'optdebug' test to .status files
is easy, but I don't want to contribute to the 'mode x variant explosion'.
R=jochen@chromium.orgCC=franzih@chromium.org, machenbach@chromium.org
Review-Url: https://codereview.chromium.org/2609193002
Cr-Commit-Position: refs/heads/master@{#42061}
This CL simplifies the relation between the wasm graph builder, the
wasm decoder, and the wasm module they work on.
BUG=
Review-Url: https://codereview.chromium.org/2612643002
Cr-Commit-Position: refs/heads/master@{#42056}
-- Removes remaning debug from promise.js and moves it to c++
-- Changes debug_id to be a smi in PromiseReactionJobInfo and
PromiseResolveThenableJobInfo.
-- Changes debug_name to be a smi in PromiseReactionJobInfo and
PromiseResolveThenableJobInfo.
-- Adds PromiseDebugActionName and PromiseDebugActionType enums
-- Adds PromiseDebugActionNameToString and
PromiseDebugActionTypeToString helper methods
-- Changes variable `status` to be int in runtime functions.
-- Changes debug_id to start from 1, not 0 for easier bookkeeping.
BUG=v8:5343
Review-Url: https://codereview.chromium.org/2606093002
Cr-Commit-Position: refs/heads/master@{#42052}
These maps contain exactly the same information as the strict maps, so
this frees up a few pointers of native context space, gets rid of some
branches in FastNewClosure, and adds missing poisoned properties tests
for async functions.
BUG=v8:2355, v8:4483
R=adamk@chromium.org, bmeurer@chromium.org, littledan@chromium.org
Review-Url: https://codereview.chromium.org/2608333002
Cr-Commit-Position: refs/heads/master@{#42051}
