BUG=chromium:508921
LOG=n

Review URL: https://codereview.chromium.org/1234443003

Cr-Commit-Position: refs/heads/master@{#29605}

Review URL: https://codereview.chromium.org/1221433021

Cr-Commit-Position: refs/heads/master@{#29604}

- split relocation info for debug break slots for
  - calls (with call arguments count as data)
  - construct calls
  - normal slots
- renamed DEBUG_BREAK into DEBUGGER_STATEMENT
- removed unused IC state for Debug stubs

R=ulan@chromium.org
BUG=v8:4269
LOG=N

Review URL: https://codereview.chromium.org/1232803002

Cr-Commit-Position: refs/heads/master@{#29603}

The JSContextSpecialization should only care about loads from the
context and stores to the context, where the context is either a
HeapConstant or the special context Parameter (and a context for the
outer most function is provided). This way we don't eagerly embed
arbitrary context constants for no benefit, but we still specialize the
loads and store which we actually care about.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1227963005

Cr-Commit-Position: refs/heads/master@{#29602}

Review URL: https://codereview.chromium.org/1226503005

Cr-Commit-Position: refs/heads/master@{#29601}

Reason for revert:
[Sheriff] Looks like another clang option got deprecated: http://build.chromium.org/p/client.v8/builders/V8%20Linux%20ASAN%20mipsel%20-%20debug%20builder/builds/326

Original issue's description:
> Update V8 DEPS.
>
> Rolling v8/tools/clang to 58128abd44c22255def1163d30bc9bb2cc85e15c
>
> Original CL: https://codereview.chromium.org/1232043002/
>
> BUG=
>
> Committed: https://crrev.com/6211e1660492f653d30ddd1336bce6f9083ede94
> Cr-Commit-Position: refs/heads/master@{#29598}

TBR=jochen@chromium.org,akos.palfi@imgtec.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1232803003

Cr-Commit-Position: refs/heads/master@{#29600}

Revert of Enable loads and stores to global vars through property cell shortcuts installed into parent script… (patchset #1 id:1 of https://codereview.chromium.org/1237603002/)

Reason for revert:
[Sheriff] This changes lots of layout tests. See comment on CL.

Original issue's description:
> Enable loads and stores to global vars through property cell shortcuts installed into parent script context.
>
> Committed: https://crrev.com/cd61b047f1ab92c353a629556f9d3ad571ace1b1
> Cr-Commit-Position: refs/heads/master@{#29595}

TBR=verwaest@chromium.org,ishell@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1236863002

Cr-Commit-Position: refs/heads/master@{#29599}

Rolling v8/tools/clang to 58128abd44c22255def1163d30bc9bb2cc85e15c

Original CL: https://codereview.chromium.org/1232043002/

BUG=

Review URL: https://codereview.chromium.org/1232583002

Cr-Commit-Position: refs/heads/master@{#29598}

Up until now we were unable to have profiler ticks beyong 255, which
basically disabled OSR for moderately large functions.

BUG=chromium:508741
LOG=n
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1224173003

Cr-Commit-Position: refs/heads/master@{#29597}

BUG=chromium:509545
LOG=n

Review URL: https://codereview.chromium.org/1232823002

Cr-Commit-Position: refs/heads/master@{#29596}

Enable loads and stores to global vars through property cell shortcuts installed into parent script context.

Review URL: https://codereview.chromium.org/1237603002

Cr-Commit-Position: refs/heads/master@{#29595}

This is follow-up for a5616e.

BUG=chromium:508584
LOG=NO

Review URL: https://codereview.chromium.org/1234513003

Cr-Commit-Position: refs/heads/master@{#29594}

Until now, TF-generated code stubs piggy-backed off of the builtin
context. Since generation of code stubs is lazy, stubs generated at
different times in different native contexts would contain embedded
pointers different builtin contexts, leading to cross-context references
and memory leaks.

After this CL, all TF-generated code stubs are generated inside a
internal thinned-out, native context that lives solely for the
purpose of hosting generated code stubs.

Review URL: https://codereview.chromium.org/1213203007

Cr-Commit-Position: refs/heads/master@{#29593}

Loads and stores to global vars are now made via property cell shortcuts installed into parent script context.

This CL also adds hydrogen stubs for global loads and global stores, full-codegen and TurboFan now uses this machinery.

Review URL: https://codereview.chromium.org/1224793002

Cr-Commit-Position: refs/heads/master@{#29592}

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1234443004

Cr-Commit-Position: refs/heads/master@{#29591}

Note that there are currently no objects that require a pre-allocated
properties backing store, all such slots are in-object properties from
the begining. Hence {unused + pre_allocated - inobject == 0} holds.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1226203011

Cr-Commit-Position: refs/heads/master@{#29590}

Fixes possible failure in AssembleArchTableSwitch().

BUG=v8:4294
LOG=y

Review URL: https://codereview.chromium.org/1229863004

Cr-Commit-Position: refs/heads/master@{#29589}

Optimize string "length" property access based on static type
information if possible, but also optimistically optimize the access
based on type feedback from the LoadIC.

R=jarin@chromium.org

Committed: https://crrev.com/17add22ff4b9c5ca638502e7708f0d9d99baca40
Cr-Commit-Position: refs/heads/master@{#29543}

Review URL: https://codereview.chromium.org/1216593003

Cr-Commit-Position: refs/heads/master@{#29588}

Some TurboFan instructions block the literal pool for their entire
duration. If a long enough sequence of these instructions is
encountered, the literal pool can be blocked until it goes out of range.

Patch from issue 1236603002 at patchset 1 (http://crrev.com/1236603002#ps1).

BUG=v8:4292
LOG=y
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1232343002

Cr-Commit-Position: refs/heads/master@{#29587}

Reduce Float64 comparison to Float32 when both inputs are conversions from
Float32.

Review URL: https://codereview.chromium.org/1235663002

Cr-Commit-Position: refs/heads/master@{#29586}

Port 0a19e449

Original commit message:
    If we do it too early, we might get a constant pool between the reloc info
    and the actual slot.

R=yangguo@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1232123006

Cr-Commit-Position: refs/heads/master@{#29585}

R=dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1233453007

Cr-Commit-Position: refs/heads/master@{#29584}

Port e50c861b

R=mstarzinger@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1230973006

Cr-Commit-Position: refs/heads/master@{#29583}

Port 8965b683

Original commit message:
    Break point at calls are currently set via IC. To change this, we
    need to set debug break slots instead. We also need to distinguish
    those debug break slots as calls to support step-in.

    To implement this, we add a data field to debug break reloc info to
    indicate non-call debug breaks or in case of call debug breaks, the
    number of arguments. We can later use this to find the callee on the
    evaluation stack in Debug::PrepareStep.

R=yangguo@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1231173002

Cr-Commit-Position: refs/heads/master@{#29582}

Do the check in release mode, too. Prefer crash over mis-patched
branch instruction.

BUG=v8:4294
LOG=N

Review URL: https://codereview.chromium.org/1233623004

Cr-Commit-Position: refs/heads/master@{#29581}

Goodbyes are not forever.
Goodbyes are not the end.
They simply mean I’ll miss you
Until we meet again!
~Author Unknown

BUG=N
LOG=N
R=adamk@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1208423016

Cr-Commit-Position: refs/heads/master@{#29580}

Revert preallocating of descriptors since right now getters and setters cause copying of descriptor arrays

BUG=

Review URL: https://codereview.chromium.org/1225213008

Cr-Commit-Position: refs/heads/master@{#29579}

We have to call CheckConflictingVarDeclarations in case we have enabled
--harmony-sloppy

BUG=v8:4287
LOG=N
R=littledan@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1226103002

Cr-Commit-Position: refs/heads/master@{#29578}

With --harmony-sloppy we can get to a runtime store in the presence of
an eval. We therefor need to check that the value is not the hole which
is used to enforce TDZ.

BUG=v8:4284
LOG=N
R=rossberg@chromium.org, littledan@chromium.org

Review URL: https://codereview.chromium.org/1214733013

Cr-Commit-Position: refs/heads/master@{#29577}

For now it uses a pretty slow path for accessing strings by wrapping it into a new temporary wrapper.

BUG=v8:4042, v8:3088
LOG=y

Review URL: https://codereview.chromium.org/1221303019

Cr-Commit-Position: refs/heads/master@{#29576}

BUG=v8:4177
LOG=n

Review URL: https://codereview.chromium.org/1233493007

Cr-Commit-Position: refs/heads/master@{#29575}

BUG=v8:4137, v8:4177
LOG=n

Review URL: https://codereview.chromium.org/1230213002

Cr-Commit-Position: refs/heads/master@{#29574}

 - we now have 6 bits to store RelocInfo mode.
 - removed a redundant tag byte per long reloc info entry.
 - renamed methods to be more precise.

Review URL: https://codereview.chromium.org/1230183002

Cr-Commit-Position: refs/heads/master@{#29573}

This allows running two executables interleaved to reduce
flakiness of tryjobs. The executables must reside in
different out directories.

BUG=chromium:507213
LOG=n
NOTRY=true
TEST=python -m unittest run_perf_test

Review URL: https://codereview.chromium.org/1215273003

Cr-Commit-Position: refs/heads/master@{#29572}

BUG=v8:4137,v8:4177
LOG=n

Review URL: https://codereview.chromium.org/1232463005

Cr-Commit-Position: refs/heads/master@{#29571}

BUG=chromium:507980
LOG=n

Review URL: https://codereview.chromium.org/1234553002

Cr-Commit-Position: refs/heads/master@{#29570}

BUG=
TBR=machenbach@chromium.org,vogelheim@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1235573002

Cr-Commit-Position: refs/heads/master@{#29569}

If we do it too early, we might get a constant pool between the reloc info
and the actual slot.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/1229673005

Cr-Commit-Position: refs/heads/master@{#29568}

BUG=chromium:490021
LOG=N

Review URL: https://codereview.chromium.org/1235563002

Cr-Commit-Position: refs/heads/master@{#29567}

Review URL: https://codereview.chromium.org/1230173002

Cr-Commit-Position: refs/heads/master@{#29566}