This refactors the OptimizedCompileJob class to be agnostic from the
actual underlying compiler. Instead it represents a base class for all
compilation jobs. The implementation is provided by the backend by just
overriding the phase methods.

Also note that this contains the semantics change of not falling back to
Crankshaft when TurboFan optimization fails. This fallback is no longer
needed and will not be supported going forward.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1872483002

Cr-Commit-Position: refs/heads/master@{#35377}

BUG=

Review URL: https://codereview.chromium.org/1864703003

Cr-Commit-Position: refs/heads/master@{#35376}

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1876723002

Cr-Commit-Position: refs/heads/master@{#35375}

Black allocation discards all old-space free-lists, which may be quite full when we perform memory reducing GCs.

BUG=chromium:599174
LOG=n

Review URL: https://codereview.chromium.org/1869493002

Cr-Commit-Position: refs/heads/master@{#35374}

Fix for multiple test failures occurring since ResumeGeneratorTrampoline
was introduced with the change 974721c6.

BUG=

Review URL: https://codereview.chromium.org/1869343003

Cr-Commit-Position: refs/heads/master@{#35373}

Revert of Use GCC for snapshot_toolchain when is_clang=false. (patchset #1 id:1 of https://codereview.chromium.org/1809643003/ )

Reason for revert:
Blocks roll: https://codereview.chromium.org/1874173002/

Original issue's description:
> Use GCC for snapshot_toolchain when is_clang=false.
>
> Currently, snapshot_toolchain is hardcoded to use a clang host
> toolchain. Use a GCC toolchain if is_clang is false.
>
> Revert this when this is root-caused (see crbug.com/601486)
>
> LOG=Y
> BUG=601486
>
> Committed: https://crrev.com/920370d1a910681bf464bd91aced316058ea2f6c
> Cr-Commit-Position: refs/heads/master@{#35341}

TBR=jochen@chromium.org,alokp@chromium.org,dpranke@chromium.org,slan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=601486
LOG=Y

Review URL: https://codereview.chromium.org/1873113002

Cr-Commit-Position: refs/heads/master@{#35372}

BUG=

Review URL: https://codereview.chromium.org/1873833002

Cr-Commit-Position: refs/heads/master@{#35371}

... instead of doing stack magic.  This is a cleanup in preparation for the new
generators implementation.

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1867263002

Cr-Commit-Position: refs/heads/master@{#35370}

Enabled big endian testing for MIPS32 and MIPS64. The tests are also
adapted for big endian variant.

TEST=cctest/test-assembler-mips[64]
BUG=

Review URL: https://codereview.chromium.org/1867503002

Cr-Commit-Position: refs/heads/master@{#35369}

If we already know that the input to one of the ObjectIs<Type> nodes is
TaggedPointer, we don't need to perform the Smi check at runtime.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1872143002

Cr-Commit-Position: refs/heads/master@{#35368}

Rolling v8/buildtools to a2082cafead67b75c9c8edbdca47a2def6dbab21

Rolling v8/tools/clang to 9dc1904d214a77f081362c1b848b5f28d2192748

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1876583002

Cr-Commit-Position: refs/heads/master@{#35367}

Revert of Fix printf formats (patchset #8 id:140001 of https://codereview.chromium.org/1869433004/ )

Reason for revert:
One small issue easily fixed here: https://codereview.chromium.org/1867333003/

But it looks like MSVS 2013 doesn't like some of the formats and exists with the unhelpful:
Stderr:
f:\dd\vctools\crt\crtw32\stdio\output.c(1125) : Assertion failed: ("Incorrect
format specifier", 0)

It's easier to revert for now, I'll dig more into the docs:
https://msdn.microsoft.com/en-us/library/56e442dc(v=vs.120).aspx
https://msdn.microsoft.com/en-us/library/tcxf1dw6(v=vs.120).aspx

And then resubmit, making sure I run these bots.

Original issue's description:
> Fix printf formats
>
> The usage of __attribute__((format(x, y)) was either wrong or missing from multiple functions, leading to erroneous formats. This CL:
>
>  - Imports PRINTF_FORMAT macro from Chrome's src/base/compiler-specific.h.
>  - Uses it appropriately.
>  - Imports Chrome's base/format_macros.h mainly to fix size_t formats (further cleanup could be done).
>  - Fixes a bunch of incorrect formats.
>
> R= jochen@chromium.org, bmeurer@chromium.org, yangguo@chromium.org, ahaas@chromium.org
>
> Committed: https://crrev.com/6ebf9fbb93d31f9be41156a3325d58704ed4933d
> Cr-Commit-Position: refs/heads/master@{#35365}

TBR=jochen@chromium.org,bmeurer@chromium.org,yangguo@chromium.org,ahaas@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1867383002

Cr-Commit-Position: refs/heads/master@{#35366}

The usage of __attribute__((format(x, y)) was either wrong or missing from multiple functions, leading to erroneous formats. This CL:

 - Imports PRINTF_FORMAT macro from Chrome's src/base/compiler-specific.h.
 - Uses it appropriately.
 - Imports Chrome's base/format_macros.h mainly to fix size_t formats (further cleanup could be done).
 - Fixes a bunch of incorrect formats.

R= jochen@chromium.org, bmeurer@chromium.org, yangguo@chromium.org, ahaas@chromium.org

Review URL: https://codereview.chromium.org/1869433004

Cr-Commit-Position: refs/heads/master@{#35365}

Adds a DivideStub for the division operator and hooks it up with TurboFan and Ignition.

Review URL: https://codereview.chromium.org/1865293003

Cr-Commit-Position: refs/heads/master@{#35364}

R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/1803373002

Cr-Commit-Position: refs/heads/master@{#35363}

Aside from v8_imminent_deprecation_warnings, all of these existed
already but were not configurable as GN args.

BUG=chromium:542853
LOG=n

Review URL: https://codereview.chromium.org/1867963002

Cr-Commit-Position: refs/heads/master@{#35362}

TBR=jyan@ca.ibm.com
NOTRY=true

Review URL: https://codereview.chromium.org/1871893002

Cr-Commit-Position: refs/heads/master@{#35361}

The builder + triggered tester replace the old compile-only
bot. Ran now as experiment for a few days.

BUG=535160
TBR=sergiyb@chromium.org, kjellander@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1872783002

Cr-Commit-Position: refs/heads/master@{#35360}

Removes the seperate Ignition snapshot and build the Ignition bytecode
handlers in the default snapshot.

BUG=v8:4280
LOG=N

Committed: https://crrev.com/1798f3fe84faff32ba44e09f6aed79245dd98d80
Cr-Commit-Position: refs/heads/master@{#35058}

Review URL: https://codereview.chromium.org/1833643002

Cr-Commit-Position: refs/heads/master@{#35359}

The parser should never need to look at the underlying closure object,
hence the field can be moved from ParseInfo into CompilationInfo.

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/1863083002

Cr-Commit-Position: refs/heads/master@{#35358}

R=hpayer@chromium.org
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1872633003

Cr-Commit-Position: refs/heads/master@{#35357}

This will allow the infrastructure to warn about new very
slow tests which are not marked as slow. If not marked, they
might be scheduled late in the test run and prolong the
overall running time uselessly.

BUG=chromium:601468
LOG=n

Review URL: https://codereview.chromium.org/1863793005

Cr-Commit-Position: refs/heads/master@{#35356}

The slow_archs list had only an effect when no timeout was
passed. Now it will also increase the timeout on the bots.

Also simplified the code a bit.

Review URL: https://codereview.chromium.org/1866953002

Cr-Commit-Position: refs/heads/master@{#35355}

R=hpayer@chromium.org
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1869353002 .

Cr-Commit-Position: refs/heads/master@{#35354}

Revert of Migrate FastCloneShallowObjectStub to TurboFan (patchset #7 id:140001 of https://codereview.chromium.org/1838283003/ )

Reason for revert:
Makes some WebGL tests flaky: https://codereview.chromium.org/1866373002/

Bisection on tryserver shows this as the culprit. Local repro unfortunately does not work.

Original issue's description:
> Migrate FastCloneShallowObjectStub to TurboFan
>
> BUG=
>
> Committed: https://crrev.com/4c2b04542f263b2679194f9fb75672ebbe72b924
> Cr-Commit-Position: refs/heads/master@{#35330}

TBR=bmeurer@chromium.org,verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=

Review URL: https://codereview.chromium.org/1875683002

Cr-Commit-Position: refs/heads/master@{#35353}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1867293002

Cr-Commit-Position: refs/heads/master@{#35352}

Revert of [builtins] Migrate String.prototype.charCodeAt and String.prototype.charAt to TurboFan. (patchset #2 id:20001 of https://codereview.chromium.org/1868963002/ )

Reason for revert:
Needed to revert https://codereview.chromium.org/1838283003/

Original issue's description:
> [builtins] Migrate String.prototype.charCodeAt and String.prototype.charAt to TurboFan.
>
> Make these builtins fast by default w/o relying on the
> %_StringCharCodeAt and %_StringCharAt intrinsics, which we cannot deal
> with well in TurboFan (and ignition).
>
> R=epertoso@chromium.org
>
> Committed: https://crrev.com/43d3331d87f68ea7efa1b58f559f33f60e5dacfb
> Cr-Commit-Position: refs/heads/master@{#35350}

TBR=epertoso@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1870993002

Cr-Commit-Position: refs/heads/master@{#35351}

Make these builtins fast by default w/o relying on the
%_StringCharCodeAt and %_StringCharAt intrinsics, which we cannot deal
with well in TurboFan (and ignition).

R=epertoso@chromium.org

Review URL: https://codereview.chromium.org/1868963002

Cr-Commit-Position: refs/heads/master@{#35350}

AddInt + WordShl cases can be optimized on MIPS and this CL contains
tests for those special cases. These test also must be passed on other
architectures.

BUG=

Review URL: https://codereview.chromium.org/1867923002

Cr-Commit-Position: refs/heads/master@{#35349}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1863793004

Cr-Commit-Position: refs/heads/master@{#35348}

BUG=chromium:600593
LOG=n
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1870763003

Cr-Commit-Position: refs/heads/master@{#35347}

It's such a corner case.

BUG=

Review URL: https://codereview.chromium.org/1865013002

Cr-Commit-Position: refs/heads/master@{#35346}

BUG=chromium:601390
LOG=n

Review URL: https://codereview.chromium.org/1865343002

Cr-Commit-Position: refs/heads/master@{#35345}

Also make the syntax a bit less complicated and speculative.

R=littledan@chromium.org
BUG=v8:4743
LOG=N

Review URL: https://codereview.chromium.org/1845243002

Cr-Commit-Position: refs/heads/master@{#35344}

Rolling v8/tools/clang to 88d00d95febafac2dbe501850d0f53e95e4db291

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1867573005

Cr-Commit-Position: refs/heads/master@{#35343}

These were all on by default in M49 without complaint.

R=littledan@chromium.org

Review URL: https://codereview.chromium.org/1858943002

Cr-Commit-Position: refs/heads/master@{#35342}

Currently, snapshot_toolchain is hardcoded to use a clang host
toolchain. Use a GCC toolchain if is_clang is false.

Revert this when this is root-caused (see crbug.com/601486)

LOG=Y
BUG=601486

Review URL: https://codereview.chromium.org/1809643003

Cr-Commit-Position: refs/heads/master@{#35341}

Port ce1fe78d

R=mvstanton@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=chromium:585041
LOG=N

Review URL: https://codereview.chromium.org/1869033002

Cr-Commit-Position: refs/heads/master@{#35340}

This fixes corner cases where the layout of feedback vectors baked into
the snapshot is different from the expected layout, depending on some
runtime flags. We make sure the feedback vector is regenereated for
functions that are not compiled. Flag changes of this kind are only
allowed when code is not serialized.

An alternative solution would be to not serialize the feedback vector
for such cases in the first place. That solution however would have a
higher overhead, as it would required the serializer to be able to
recognize feedback vectors while generating a snapshot.

R=mvstanton@chromium.org
TEST=mjsunit/regress/regress-crbug-600995
BUG=chromium:600995
LOG=n

Review URL: https://codereview.chromium.org/1869693003

Cr-Commit-Position: refs/heads/master@{#35339}

Make sure we check that packed elements do not containt TheHole.
%DebugPrint:
- Only print the transition arrays for maps
- Print more detailed instance types directly for objects
- directly print the array length for JS_ARRAY objects

BUG=

Review URL: https://codereview.chromium.org/1870433003

Cr-Commit-Position: refs/heads/master@{#35338}