Don't double smi-tag the mask used to check read-only / field mode in the dictionary-store-stub on X64

BUG=

Review URL: https://codereview.chromium.org/757673002

Cr-Commit-Position: refs/heads/master@{#25493}

cctest/test-threads/ThreadJoinSelf is suppressed for Android, but the
test has since been moved to unittests/Thread.SelfJoin. Move the
suppression to unittests.status.

unittests/ThreadLocalStorageTest.DoTest fails on older Android devices
as it assumes the availability of more TLS slots than many devices
implement. Test a smaller number of slots (32) on Android. Remove old
suppression of test-platform-tls/FastTLS (which no longer exists).

cctest/test-mark-compact/RegressJoinThreadsOnIsolateDeinit can't deal
with shared mappings. Check for 's' instead of '-'.

BUG=v8:3706
LOG=

Review URL: https://codereview.chromium.org/735863003

Cr-Commit-Position: refs/heads/master@{#25492}

Resets the scaled exponent to 0 when the scaling match fails.

BUG=

Review URL: https://codereview.chromium.org/756643002

Cr-Commit-Position: refs/heads/master@{#25491}

BUG=v8:3629
LOG=N
TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/753223002

Cr-Commit-Position: refs/heads/master@{#25490}

TBR=ulan@chromium.org
BUG=v8:3723
LOG=N

Review URL: https://codereview.chromium.org/749283002

Cr-Commit-Position: refs/heads/master@{#25489}

This sample used to demonstrate the usage of the DebuggerAgent. The latter
has been removed, so this sample has no point anymore.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/754043002

Cr-Commit-Position: refs/heads/master@{#25488}

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/739253006

Cr-Commit-Position: refs/heads/master@{#25487}

R=ulan@chromium.org
BUG=v8:3717
LOG=N

Review URL: https://codereview.chromium.org/758523004

Cr-Commit-Position: refs/heads/master@{#25486}

This avoids allocating vector ic slots that we don't use.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/758543002

Cr-Commit-Position: refs/heads/master@{#25485}

BUG=chromium:435974
LOG=N

Review URL: https://codereview.chromium.org/755583003

Cr-Commit-Position: refs/heads/master@{#25484}

Review URL: https://codereview.chromium.org/751643005

Cr-Commit-Position: refs/heads/master@{#25483}

Review URL: https://codereview.chromium.org/739013004

Cr-Commit-Position: refs/heads/master@{#25482}

BUG=421063

Review URL: https://codereview.chromium.org/746263002

Cr-Commit-Position: refs/heads/master@{#25481}

The file snapshot_blob_host.bin was supposed to be generated when building the host toolset. However, the file snapshot_blob.bin was being generated instead, under every set of conditions.

Because of this, every time we build the host toolset, snapshot_blob_host.bin is not found. This causes the target (v8_external_snapshot) that generates such file to be run. This target generates snapshot_blob.bin instead of snapshot_blob_host.bin. This in turn causes all the targets that depend on snapshot_blob.bin to run again.

After this, we still don't have snapshot_blob_host.bin. So the next time we build, the whole process described above happens again.

BUG=421063

Review URL: https://codereview.chromium.org/741223002

Cr-Commit-Position: refs/heads/master@{#25480}

TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/749233002

Cr-Commit-Position: refs/heads/master@{#25479}

BUG=

Review URL: https://codereview.chromium.org/756553002

Cr-Commit-Position: refs/heads/master@{#25478}

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/754803002

Cr-Commit-Position: refs/heads/master@{#25477}

R=jkummerow@chromium.org
BUG=435825
LOG=N

Review URL: https://codereview.chromium.org/753983002

Cr-Commit-Position: refs/heads/master@{#25476}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/730183005

Cr-Commit-Position: refs/heads/master@{#25475}

Review URL: https://codereview.chromium.org/741643003

Cr-Commit-Position: refs/heads/master@{#25474}

R=svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/725293003

Cr-Commit-Position: refs/heads/master@{#25473}

This is needed for 64bit alignment sensitive platforms (PowerPC)
Exposed bugs with new GC compare and swap changes updating the
field.

Example failing test:
out/ppc64.debug/cctest  test-decls/ExistsInPrototype

BUG=

Review URL: https://codereview.chromium.org/740443002

Cr-Commit-Position: refs/heads/master@{#25472}

R=svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/691513005

Cr-Commit-Position: refs/heads/master@{#25471}

Revert of Enable inobject double fields unboxing for 64-bit archs. (patchset #3 id:40001 of https://codereview.chromium.org/753503002/)

Reason for revert:
GCMole and gc-stress issues.

Original issue's description:
> Enable inobject double fields unboxing for 64-bit archs.

TBR=verwaest@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/751863002

Cr-Commit-Position: refs/heads/master@{#25470}

Review URL: https://codereview.chromium.org/753503002

Cr-Commit-Position: refs/heads/master@{#25469}

R=rossberg@chromium.org
BUG=v8:2198
LOG=N

Review URL: https://codereview.chromium.org/745963002

Cr-Commit-Position: refs/heads/master@{#25468}

This reverts commit 9da92c1a because of performance regressions.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/752613002

Cr-Commit-Position: refs/heads/master@{#25467}

They generally cause regressions on most modern Intel chips. Replace them with
addl/subl.

Review URL: https://codereview.chromium.org/737153003

Cr-Commit-Position: refs/heads/master@{#25466}

BUG=

Review URL: https://codereview.chromium.org/751543002

Cr-Commit-Position: refs/heads/master@{#25465}

R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/750543002

Cr-Commit-Position: refs/heads/master@{#25464}

R=rossberg@chromium.org
BUG=v8:3712
LOG=N

Review URL: https://codereview.chromium.org/743843003

Cr-Commit-Position: refs/heads/master@{#25463}

A useful value would be 4, so we get 1, 4, 16MB (instead of the default
value 2 which leads to 1, 2, 4, 8, 16)

BUG=none
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/753513002

Cr-Commit-Position: refs/heads/master@{#25462}

BUG=

Review URL: https://codereview.chromium.org/748773002

Cr-Commit-Position: refs/heads/master@{#25461}

BUG=v8:3716
LOG=N

Review URL: https://codereview.chromium.org/746983002

Cr-Commit-Position: refs/heads/master@{#25460}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/582683002

Cr-Commit-Position: refs/heads/master@{#25459}

TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/749963002

Cr-Commit-Position: refs/heads/master@{#25458}

R=ulan@chromium.org
BUG=v8:3229
LOG=N

Review URL: https://codereview.chromium.org/736003002

Cr-Commit-Position: refs/heads/master@{#25457}

BUG=435477
LOG=N
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/751513002

Cr-Commit-Position: refs/heads/master@{#25456}

The bug was an error when copying arrays in crankshaft. If it's a holey smi
array, the copy must be done as FAST_HOLEY_ELEMENTS to prevent representation
changes from being inserted that deopt on encountering the hole.

Also, prevent inlining array pop() and shift() if the length is read-only.

BUG=435073
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/737383002

Cr-Commit-Position: refs/heads/master@{#25455}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/737733002

Cr-Commit-Position: refs/heads/master@{#25454}