Change InstructionOperand to use a 64-bit field for encoding the operand
information instead of the 32-bit field that was used before. Ideally we
wouldn't use the Zone-allocated bit field at all, and use an integer
instead of the pointer; but that requires fixing the register allocator
first, which will take some time.
TEST=mjsunit/compiler/regress-3786
BUG=v8:3786
LOG=y
Review URL: https://codereview.chromium.org/826673002
Cr-Commit-Position: refs/heads/master@{#25941}
We have safe fallbacks in all cases, and it's possible to hit those
codepaths, e.g., on Linux when /proc is not mounted
BUG=v8:3544
R=ulan@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/818213002
Cr-Commit-Position: refs/heads/master@{#25940}
Also slightly refactor the NodeCache and CommonNodeCache classes to
reduce inherent overhead of caching.
TEST=cctest
Review URL: https://codereview.chromium.org/822923002
Cr-Commit-Position: refs/heads/master@{#25937}
This is a temporary workaround to ensure that we crash in release mode
instead of running into undefined behavior.
BUG=chromium:444681
LOG=y
R=ishell@chromium.org
Review URL: https://codereview.chromium.org/800713006
Cr-Commit-Position: refs/heads/master@{#25933}
This is not needed anymore since all ICs use weak cells to embed maps.
BUG=v8:3629
LOG=N
Review URL: https://codereview.chromium.org/817223003
Cr-Commit-Position: refs/heads/master@{#25928}
This API is used by Blink to inform V8 about HTML frames being disposed.
Using the optional parameter, Blink can tell V8 whether the disposed
frame was a main frame. In that case, we might want to reset GC
parameters
BUG=none
R=hpayer@chromium.org
LOG=y
Review URL: https://codereview.chromium.org/823583003
Cr-Commit-Position: refs/heads/master@{#25926}
The CommonOperatorReducer currently takes care of redundant Phis,
EffectPhis and Selects. This functionality overlaps with ControlReducer,
but is required to make certain optimizations effective, since the
ControlReducer only runs really early and really late in the pipeline
and therefore other reducers aren't reapplied properly after redundant
phi/select elimination.
TEST=unittests
R=hpayer@chromium.org
Review URL: https://codereview.chromium.org/817243003
Cr-Commit-Position: refs/heads/master@{#25922}
The test driver doesn't know at the moment if optdebug 1 or 2 has been used (the first is used on the bots, the second
locally in quickcheck). It can't know therefore if slow
asserts can be enabled or not. Trying to enable them leads
to a warning if they weren't compiled, which causes webkit
1:1 text comparison to fail.
Review URL: https://codereview.chromium.org/819033002
Cr-Commit-Position: refs/heads/master@{#25921}
This issue is exposed by CL https://codereview.chromium.org/807273003.
The DeoptimizeIf(...) function will generate more Assembler code and the
distance between the link point and the bind point is larger then near
link distance (127) for labels.
BUG=
Review URL: https://codereview.chromium.org/820963002
Cr-Commit-Position: refs/heads/master@{#25914}
Convert all results to floats and log errors on failing
conversions. Otherwise these results bubble up into
buildbot.
TBR=tandrii@chromium.org
BUG=chromium:374740
LOG=n
NOTRY=true
Review URL: https://codereview.chromium.org/811483008
Cr-Commit-Position: refs/heads/master@{#25913}
There might be a number of clients that would like to
setup an interrupt request on the Isolate.
The patch also deprecates ClearInterrupt API. As long as
the interrupt handler is called outside of locks there's no way
to guarantee that the handler will not be called after
ClearInterrupt was invoked as it might have already started execution.
Review URL: https://codereview.chromium.org/796623003
Cr-Commit-Position: refs/heads/master@{#25910}
This avoids touching the Array prototype, which may have been tampered with.
BUG=chromium:443982
LOG=n
Review URL: https://codereview.chromium.org/820503005
Cr-Commit-Position: refs/heads/master@{#25908}
Regular ICs in MONOMORPHIC and POLYMORPHIC state now hold onto maps with
WeakCells. Vector-based ICs should do the same.
R=ulan@chromium.org
Review URL: https://codereview.chromium.org/815953002
Cr-Commit-Position: refs/heads/master@{#25907}
This ensures that we always have a kind of "brace" around the actual compilation
with --trace-opt. Previously this was coupled to --trace-hydrogen for
Crankshaft, and there was no output at the start of the compilation for
TurboFan.
Removed redundant "[completed...]" output: Whenever the compilation was
successful, we have already printed "[optimizing...took...]".
Output total TurboFanning time with --trace-opt, too (basically as graph
building time, this is rather arbitrary).
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/819613002
Cr-Commit-Position: refs/heads/master@{#25900}
Denver supports a coherent cache mechanism. There is no need to clean
the D cache and invalidate I cache. MTS has to check the translation
anytime there is an I cache invalidate and this time can be saved by
making FlushICache a NOP.
The patch improves Octane by roughly 3-4% on Denver.
Review URL: https://codereview.chromium.org/797233002
Cr-Commit-Position: refs/heads/master@{#25898}
