Reason for revert:
MIPS compilation error.
Original issue's description:
> Refactor CpuProfiler.
>
> Currently CpuProfiler is a subclass of CodeEventListener, it listens code events
> from Logger, constructs and stores CodeEventsContainer. This patch is part of
> the effort to split the logic of CodeEventListener as ProfilerListener out of
> the profiling functionality logic in CpuProfiler. A ProfilerListener will listen
> to code events, construct code event to CodeEventsContainer and pass it to code
> event handler.
>
> The reason we refactor CpuProfiler is that eventually we want to move
> CpuProfiler as part of sampler library and code event listener should stay
> inside V8.
>
> Main changes:
> 1. Refactored CpuProfiler into two parts, the CpuProfiler with profling
> functionality and the ProfilerListener listening to code events from Logger.
> 2. Created CodeEventObserver and made CpuProfiler inherit from it.
> ProfilerListener will have a list of observers and call CodeEventHandler once a
> code event is created.
> 3. Moved code entry list from CodeEntry to ProfilerListener.
>
> Minor changes:
> 1. Moved static code entry as part of CodeEntry.
> 2. Added ProfilerListener to Logger.
>
> BUG=v8:4789
>
> Committed: https://crrev.com/cb59fc1facc9b390e2c7544b4da56a4e0a9b3222
> Cr-Commit-Position: refs/heads/master@{#37112}
TBR=alph@chromium.org,jochen@chromium.org,yangguo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789
Review-Url: https://codereview.chromium.org/2079273003
Cr-Commit-Position: refs/heads/master@{#37113}
Currently CpuProfiler is a subclass of CodeEventListener, it listens code events
from Logger, constructs and stores CodeEventsContainer. This patch is part of
the effort to split the logic of CodeEventListener as ProfilerListener out of
the profiling functionality logic in CpuProfiler. A ProfilerListener will listen
to code events, construct code event to CodeEventsContainer and pass it to code
event handler.
The reason we refactor CpuProfiler is that eventually we want to move
CpuProfiler as part of sampler library and code event listener should stay
inside V8.
Main changes:
1. Refactored CpuProfiler into two parts, the CpuProfiler with profling
functionality and the ProfilerListener listening to code events from Logger.
2. Created CodeEventObserver and made CpuProfiler inherit from it.
ProfilerListener will have a list of observers and call CodeEventHandler once a
code event is created.
3. Moved code entry list from CodeEntry to ProfilerListener.
Minor changes:
1. Moved static code entry as part of CodeEntry.
2. Added ProfilerListener to Logger.
BUG=v8:4789
Review-Url: https://codereview.chromium.org/2053523003
Cr-Commit-Position: refs/heads/master@{#37112}
Runtime_DeclareLookupSlot is used when generating code for var and function declarations
originating in an eval. Over time, it's accumulated quite a bit of cruft, which this CL removes:
- With legacy const gone, lookup slots never have any property attributes.
- There was a bit signaling that the variable was from an eval, but that was redundant since
DeclareLookupSlot is only used for eval.
- Some Proxy-related code didn't make sense here.
Its name was also not terribly clear: while "LookupSlot" is used in several places, this
particular function is only used for declaring variables and functions inside sloppy eval.
Renamed (and split into two) to make this clear for future archeologists.
Also added various DCHECKs to check the assumptions being made.
Review-Url: https://codereview.chromium.org/2061173002
Cr-Commit-Position: refs/heads/master@{#37111}
Previously we would elide debug slots if the statement position it
belongs to has just already been written. The motivation is that since
we should only break once per statement, we can elide debug slots that
has the same statement position as the previous debug slot.
This is an unnecessary optimization, since the debugger has yet another
check against breaking twice at the same statement at runtime, in
Debug::Break.
This optimization can also be wrong, if there is control flow involved,
for example if we can jump to the elided debug slot without executing
the previous debug slot.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
R=jgruber@chromium.org
Review-Url: https://codereview.chromium.org/2080173002
Cr-Commit-Position: refs/heads/master@{#37107}
Port 481502dad9
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does not preserve NaN payload according to Wasm spec. Implemented macro-assembler methods that check for NaN operands, and return the qNaN value with preserved payload and sign bits.
TEST=cctest/test-run-wasm/Run_WasmFloat32SubMinusZero, cctest/test-run-wasm/Run_WasmFloat64SubMinusZero
BUG=
patch from issue 2019693002 at patchset 140001 (http://crrev.com/2019693002#ps140001)
R=ahaas@chromium.org
Review-Url: https://codereview.chromium.org/2066483008
Cr-Commit-Position: refs/heads/master@{#37105}
Adds an evacuation mode that allows moving pages within new space without
copying objects.
Basic idea:
a) Move page within new space
b) Sweep page to make iterable and process ArrayBuffers
c) Finish sweep till next scavenge
Threshold is currently 70% live bytes, i.e., the same threshold we use
to determine fragmented pages.
This reverts commit 2263ee9bf4.
BUG=chromium:581412
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
Review-Url: https://codereview.chromium.org/2078863002
Cr-Commit-Position: refs/heads/master@{#37104}
We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.
Review-Url: https://codereview.chromium.org/2078423002
Cr-Commit-Position: refs/heads/master@{#37102}
All function which potentially do heap allocations now take a Handle
on a WasmDebugInfo. This unfortunately requires to make some function
static, since otherwise the "this" pointer would not be handlified.
R=ahaas@chromium.org, titzer@chromium.org
BUG=chromium:613110
Review-Url: https://codereview.chromium.org/2074933005
Cr-Commit-Position: refs/heads/master@{#37099}
The simplified SpeculativeNumber operators shouldn't be in the control
chain at all. They are part of the effect chain to ensure that we can
find a frame state for eager deoptimization.
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2083503002
Cr-Commit-Position: refs/heads/master@{#37098}
When updating source positions, we recompute reloc info. Under the
assumption that reloc info is appended to the code, we may or may not
need to allocate a new code object. That assumption is no longer valid
since 2010 (see r5020).
R=mstarzinger@chromium.org
Review-Url: https://codereview.chromium.org/2077363002
Cr-Commit-Position: refs/heads/master@{#37097}
These are used to check for Smi or HeapObject, and we use them
appropriately in JSNativeContextSpecialization, so we don't need
to introduce dependencies on concrete control flow and/or concrete
frame states.
They will be optimized by a proper check elimination reducer,
which will be added in a separate CL.
R=jarin@chromium.org
BUG=v8:4470
Review-Url: https://codereview.chromium.org/2082523002
Cr-Commit-Position: refs/heads/master@{#37096}
This makes sure we use ninja everywhere if not stated
otherwise explicitly.
BUG=chromium:474921
Review-Url: https://codereview.chromium.org/2078393002
Cr-Commit-Position: refs/heads/master@{#37095}
Reason for revert:
[Sheriff] Speculative revert for crashes on chrubuntu chromebooks:
https://build.chromium.org/p/client.v8.ports/builders/V8%20Arm/builds/320
Original issue's description:
> Implement WASM big-endian support.
>
> Implement WASM support on big-endian platforms. WASM has
> an implicit requirement that it is running on little-endian
> machine. We achieve WASM support on BE by keeping data
> in memory in little-endian order, and changing data
> endianness before storing to memory and after loading from
> memory.
>
> BUG=
>
> Committed: https://crrev.com/d3f3f6c8186b2a53f0c539f7bba0c3708c4d83f9
> Cr-Commit-Position: refs/heads/master@{#37065}
TBR=titzer@chromium.org,akos.palfi@imgtec.com,balazs.kilvady@imgtec.com,jyan@ca.ibm.com,ivica.bogosavljevic@imgtec.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=
Review-Url: https://codereview.chromium.org/2080153002
Cr-Commit-Position: refs/heads/master@{#37091}
Reason for revert:
[Sheriff] Speculative revert: Seems to lead to devtools crashes:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Win/builds/5259
Original issue's description:
> [turbofan] Introduce CheckUnless.
>
> Similarly to CheckIf, CheckUnless is a deoptimization without a specific
> frame state. A frame state is assigned during effect-control linearization
> (and CheckUnless is turned into DeoptimizeUnless).
>
> At the moment, the new operator is only used at one place in native context
> specialization, but we should use it everywhere. The advantage of
> CHeckUnless is that it avoids non-truncating uses of values by frame
> states. This particular change is aimed at Octane's crypto, where this
> enables to turn one NumberMultiply into Int32Mul, and thus improve
> the score by more than 10% (it also needs minus zero truncation and
> typing to be improved, but those CLs are already in flight).
>
> BUG=v8:4470
> R=bmeurer@chromium.org
>
> Committed: https://crrev.com/85fde59d538e0dcaf461108086c2f7cf904f567a
> Cr-Commit-Position: refs/heads/master@{#37085}
TBR=bmeurer@chromium.org,jarin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4470
Review-Url: https://codereview.chromium.org/2078333002
Cr-Commit-Position: refs/heads/master@{#37090}
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}
Compilation of wasm functions happens before instantiation. Imports are linked afterwards, at instantiation time. Globals and memory are also
allocated and then tied in via relocation at instantiation time.
This paves the way for implementing Wasm.compile, a prerequisite to
offering the compiled code serialization feature.
Currently, the WasmModule::Compile method just returns a fixed array
containing the code objects. More appropriate modeling of the compiled module to come.
Opportunistically centralized the logic on how to update memory
references, size, and globals, since that logic is the exact same on each
architecture, except for the actual storing of values back in the
instruction stream.
BUG=v8:5072
Review-Url: https://codereview.chromium.org/2056633002
Cr-Commit-Position: refs/heads/master@{#37086}
Similarly to CheckIf, CheckUnless is a deoptimization without a specific
frame state. A frame state is assigned during effect-control linearization
(and CheckUnless is turned into DeoptimizeUnless).
At the moment, the new operator is only used at one place in native context
specialization, but we should use it everywhere. The advantage of
CHeckUnless is that it avoids non-truncating uses of values by frame
states. This particular change is aimed at Octane's crypto, where this
enables to turn one NumberMultiply into Int32Mul, and thus improve
the score by more than 10% (it also needs minus zero truncation and
typing to be improved, but those CLs are already in flight).
BUG=v8:4470
R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/2080113002
Cr-Commit-Position: refs/heads/master@{#37085}
This introduces handling number feedback for multiplication, division
and modulus. At the moment, the only effect is using deoptimizing
number conversion instead of ToNumber call.
Review-Url: https://codereview.chromium.org/2074903002
Cr-Commit-Position: refs/heads/master@{#37081}
Rolling v8/build to dfed34c541415c22c3d6037e7e62224a2511f1e4
Rolling v8/tools/mb to 69858344b036b3694334ffe53829fe4cfad89822
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review-Url: https://codereview.chromium.org/2076393003
Cr-Commit-Position: refs/heads/master@{#37079}
Reason for revert:
[Sheriff] Speculative revert. Looks like this lets a few ignition+turbofan tests time out under tsan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/10171
Original issue's description:
> [Turbofan] Clean up register allocator and verifier code.
>
> - Improves RegisterName display in register allocator.
> - Removes GetFixedRegisters method in preparation for having multiple fp
> reg types.
> - Clean up some verifier code.
>
> LOG=N
> BUG=v8:4124
>
> Committed: https://crrev.com/d99e1ab60557e86b62ccc6c91514e817c0df370d
> Cr-Commit-Position: refs/heads/master@{#37076}
TBR=mtrofin@chromium.org,bbudge@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2078243002
Cr-Commit-Position: refs/heads/master@{#37077}
Rolling v8/build to d45e523e2428a9500e5d4c9e64d9345e75ac315a
Rolling v8/tools/gyp to c61b0b35c8396bfd59efc6cfc11401d912b0f510
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review-Url: https://codereview.chromium.org/2078163002
Cr-Commit-Position: refs/heads/master@{#37074}
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}
Implement WASM support on big-endian platforms. WASM has
an implicit requirement that it is running on little-endian
machine. We achieve WASM support on BE by keeping data
in memory in little-endian order, and changing data
endianness before storing to memory and after loading from
memory.
BUG=
Review-Url: https://codereview.chromium.org/2034093002
Cr-Commit-Position: refs/heads/master@{#37065}
It still seems to break things in the wild, see attached Chromium
bug for details.
BUG=v8:4247, chromium:615873
Review-Url: https://codereview.chromium.org/2076763003
Cr-Commit-Position: refs/heads/master@{#37064}
