Currently, we are using the following sequence for load/store with large offset (offset > 16b):
lui at, 0x1234
ori at, at, 0x5678
add at, s0, at
lw a0, 0(at)
This sequence can be optimized in the following way:
lui at, 0x1234
add at, s0, at
lw a0, 0x5678(at)
BUG=
Review-Url: https://codereview.chromium.org/2486283003
Cr-Commit-Position: refs/heads/master@{#40953}
Changes include:
- Adding V8_EXPORT macro for SnapshotCreator
- Removing outdated DCHECKs.
- Allow nullptr as external reference. This required a...
- Refactoring of hashmaps used by the serializer.
- Remove external references for counters. These are not used
anywhere for isolates that are being serialized.
- Put template infos into the partial snapshot cache.
- Remove unnecessary presubmit check for external references.
mksnapshot crashes if external references are missing.
R=jochen@chromium.org, vogelheim@chromium.org
BUG=chromium:617892
Review-Url: https://codereview.chromium.org/2490783004
Cr-Commit-Position: refs/heads/master@{#40949}
Port 1915762cc8
Original commit message:
These JavaScript operators were special hacks to ensure that we always
operate on Smis for the magic for-in index variable, but this never
really worked in the OSR case, because the OsrValue for the index
variable didn't have the proper information (that we have for the
JSForInPrepare in the non-OSR case).
Now that we have loop induction variable analysis and binary operation
hints, we can just use JSLessThan and JSAdd instead with appropriate
Smi hints, which handle the OSR case by inserting Smi checks (that are
always true). Thanks to OSR deconstruction and loop peeling these Smi
checks will be hoisted so they don't hurt the OSR case too much.
Drive-by-change: Rename the ForInDone bytecode to ForInContinue, since
we have to lower it to JSLessThan to get the loop induction variable
goodness.
R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N
Review-Url: https://codereview.chromium.org/2502503002
Cr-Commit-Position: refs/heads/master@{#40947}
Several weeks have now passed since it was deprecated; Chromium does not
call it.
BUG=chromium:148757
Review-Url: https://codereview.chromium.org/2478863002
Cr-Commit-Position: refs/heads/master@{#40945}
- Creates a new promise-utils.{h, cc} which refactors out the
logic to create resolving functions. This is shared between the
runtime functions and builtins.
- Changes PromiseResolveThenableJobInfo to store the context
since we no longer create the resolving functions in JS.
- Changes EnqueuPromiseResolveThenableJob to take in the promise and
not the callbacks.
BUG=v8:5343
Review-Url: https://codereview.chromium.org/2487053002
Cr-Commit-Position: refs/heads/master@{#40941}
- Adds VmovExtended, VswpExtended methods to MacroAssembler. These methods
use only VFP registers to perform s-register moves.
LOG=N
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2497483002
Cr-Commit-Position: refs/heads/master@{#40939}
GetSharedFunctionInfo will compile inner functions if we get the
compile-eager hint, even if the shared function info already exists, and
the function already has been compiled. This breaks suspended generator
objects.
R=mstarzinger@chromium.org, neis@chromium.org
BUG=v8:5575
Review-Url: https://codereview.chromium.org/2494043002
Cr-Commit-Position: refs/heads/master@{#40936}
Methods in the runtime that enumerate over properties should never deal with private symbols. Most commonly such methods only loop over enumerable properties. This fix avoids accidentally handling private symbols in methods that only deal with enumerable properties. Methods that need to look at non-enumerable properties as well still have to manually filter private symbols (e.g., the KeyAccumulator).
BUG=chromium:664411
Review-Url: https://codereview.chromium.org/2499593002
Cr-Commit-Position: refs/heads/master@{#40932}
Fixes incorrect checks for handle validity when checking the compiled
code, as well as incorrect uses of tst in arm and ppc flag checking
code. Also adds a test that the tier-up works correctly.
Reland of https://codereview.chromium.org/2448933002
BUG=v8:5512
Review-Url: https://codereview.chromium.org/2497573003
Cr-Commit-Position: refs/heads/master@{#40930}
Reason for revert:
Revert because it depends on https://codereview.chromium.org/2478323002/ which has been reverted.
Original issue's description:
> [compiler] Enable shared function marking by default
>
> BUG=v8:5512
TBR=bmeurer@chromium.org,leszeks@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5512
Review-Url: https://codereview.chromium.org/2491643006
Cr-Commit-Position: refs/heads/master@{#40926}
ToName conversion, i.e., ToPropertykey() is the
identify for strings and symbols.
BUG=v8:5623
Review-Url: https://codereview.chromium.org/2494073002
Cr-Commit-Position: refs/heads/master@{#40924}
This adds a new ExternalPointer type, which is an Internal type that is
used for ExternalReferences and other pointer values, like the pointers
into the asm.js heap. It also adds a PointerConstant operator, which we
use to represents these raw constants (we can probably remove that
particular operator again once WebAssembly ships with the validator).
R=mvstanton@chromium.org
BUG=v8:5267,v8:5270
Review-Url: https://codereview.chromium.org/2494753003
Cr-Commit-Position: refs/heads/master@{#40923}
According to the spec data segments are allowed even if the memory size
is zero. However, if one of the data segments has a length greater than
0, then module instantiation should fail.
I also changed the exception type in LoadDataSegments to TypeError,
because that's the exception type for all exceptions which can happen
during instantiation.
R=titzer@chromium.org, rossberg@chromium.org
TEST=cctest/test-run-wasm-module/EmptyMemoryEmptyDataSegment, cctest/test-run-wasm-module/EmptyMemoryNonEmptyDataSegment
Review-Url: https://codereview.chromium.org/2483053005
Cr-Commit-Position: refs/heads/master@{#40922}
A SmiUntag() was missing when loading the old backing store's length.
BUG=chromium:664469
Review-Url: https://codereview.chromium.org/2492783004
Cr-Commit-Position: refs/heads/master@{#40921}
This CL adds support for:
* conditional breaks in setBreakpoint,
* locals in frame.local{Count,Name,Value},
* evaluation on a frame in frame.evaluate,
* and more detailed scope information in scopeObject.
Uses of several functions that are not covered by the
inspector protocol and are only used in tests have been removed.
Local handling has been modified to also include arguments as locals.
Inspector differs in this regard from our FrameDetails in that
arguments are always shown as locals. Argument-related functions
were removed.
BUG=v8:5530
Review-Url: https://codereview.chromium.org/2491543002
Cr-Commit-Position: refs/heads/master@{#40917}
Fixes incorrect checks for handle validity when checking the compiled
code, as well as incorrect uses of tst in arm and ppc flag checking
code. Also adds a test that the tier-up works correctly.
Review-Url: https://codereview.chromium.org/2478323002
Cr-Commit-Position: refs/heads/master@{#40915}
This CL moves all heap-allocated WASM data structures, both ones
that are bonafide JSObjects and ones that are FixedArrays only, into a
consistent place with consistent layout. Note that not all accessors are complete, and I haven't fully spread the new static typing goodness
to all places in the code.
R=ahaas@chromium.org,rossberg@chromium.org
CC=gdeepti@chromium.org,mtrofin@chromium.org,clemensh@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2490663002
Cr-Commit-Position: refs/heads/master@{#40913}
And decouple hydrogen-instructions.h from code-stubs.h. This avoids
all of Crankshaft being recompiled when code-stub-assembler.h changes.
Review-Url: https://codereview.chromium.org/2498563002
Cr-Commit-Position: refs/heads/master@{#40912}
This enables the on-stack replacement mechanism from Ignition bytecode
to TurboFan optimized code by default. The runtime profiler is now
allowed to arm OSR points in bytecode.
R=rmcilroy@chromium.org
Review-Url: https://codereview.chromium.org/2432413004
Cr-Commit-Position: refs/heads/master@{#40911}
Fast case the monomorphic case, by marking the additional checks as deferred
blocks. This increases the code size by about 50 bytes, but the monmorphic
case requires one fewer jump and the all the code is contiguous, so may help
caching.
Also cleanup call and new bytecode handlers by changing some of the Branches
to GotoIf/Unless for better readability.
BUG=v8:4280
Review-Url: https://codereview.chromium.org/2487573005
Cr-Commit-Position: refs/heads/master@{#40910}
Utilize the string length protector to deoptimize if the resulting
string length for string addition overflows. This way we generate
less code here and avoid holding on to the lazy frame state, and
thus potentially reduce the number live ranges.
BUG=v8:5267,v8:5404
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2491943004
Cr-Commit-Position: refs/heads/master@{#40909}
The contract for TurboFan is that we use NumberConstants for any kind
of number value until the representation selection picks concrete
representations, i.e. Int32Constant or Float64Constant. We will soon
be able to also guard this contract with DCHECKs.
BUG=v8:5267
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2499573002
Cr-Commit-Position: refs/heads/master@{#40908}
Record feedback for moved pages. Aligns the behavior of the copying and moving
evacuator.
BUG=chromium:651354
Review-Url: https://codereview.chromium.org/2494723002
Cr-Commit-Position: refs/heads/master@{#40905}
