port a58ba8d8 (r29279).

original commit message:

    This introduces some initial building blocks for calling out to
    C/C++ functions directly from TurboFan generated code objects.

BUG=

Review URL: https://codereview.chromium.org/1214903007

Cr-Commit-Position: refs/heads/master@{#29408}

 This CL fixes the following situations:
    1, Operands are -0.0 or 0.0. it always return right value.
    1, Operands contains NaN. it always return right value.

BUG=

Review URL: https://codereview.chromium.org/1214893004

Cr-Commit-Position: refs/heads/master@{#29407}

port c019d7f4 (r29248).

original commit message:

    Use big-boy Types to annotate interface descriptor parameters

    - Thread Type::FunctionType through stubs and the TF pipeline.
    - Augment Typer to decorate parameter nodes with types from
      a Type::FunctionType associated with interface descriptors.
    - Factor interface descriptors into platform-specific and
      platform-independent components so that all descriptors share
      a common Type::FunctionType for all platforms.

BUG=

Review URL: https://codereview.chromium.org/1210463002

Cr-Commit-Position: refs/heads/master@{#29406}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1216153004

Cr-Commit-Position: refs/heads/master@{#29405}

R=machenbach@chromium.org
BUG=494641
LOG=N
NOTRY=true

Review URL: https://codereview.chromium.org/1217173003

Cr-Commit-Position: refs/heads/master@{#29404}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1218003003

Cr-Commit-Position: refs/heads/master@{#29403}

Up until now the context register was listed explicitly in each stub's
CallInterfaceDescriptor. This was problematic, because it was listed
first in the list of register parameters--which is fine for Crankshaft,
which is more or less built to handle the context as the first
parameter-- but not ideal for TurboFan, which adds the context at
the end of all function parameters. Now the context register is no
longer in the register list and can be handled appropriately by both
compilers. Specifically, this allows the FunctionType specified for
each CallInterfaceDescriptor to exactly match the parameter register
list.

Review URL: https://codereview.chromium.org/1211333003

Cr-Commit-Position: refs/heads/master@{#29402}

This operator< overload is rather dangerous for handles. And we don't
actually need a std::set in the chunk builder, since duplicates are
automatically eliminated later when the code dependencies are committed.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1214573004

Cr-Commit-Position: refs/heads/master@{#29401}

We now consistently ignore native and extension scripts for debugging. Only native scripts and extension scripts can disallow lazy compilation. So we can make sure that break points are only set to code that are compiled with debug break slots.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1216193002

Cr-Commit-Position: refs/heads/master@{#29400}

Rolling v8/third_party/icu to 1b697da5c2c0112e2b70e7e75d3e3d985f464a8f

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1217893007

Cr-Commit-Position: refs/heads/master@{#29399}

port 8196c28a (r29238).

original commit message:

  JSConstructStub for subclass constructors instead locates new.target in
  a known location on the stack.

BUG=

Review URL: https://codereview.chromium.org/1207613003

Cr-Commit-Position: refs/heads/master@{#29398}

port 882055ff (r29082).

   The original CL covers part of X87 port. This CL addes the missing changes.

original commit message:

  - fix truthfulness of comments
    - use InitializeFieldsWithFiller more consistently
    - use unsigned comparisons for pointers

    No change in functionality intended.

    Bonus: improve JavaScriptFrame::Print() for an enhanced debugging experience:

BUG=

Review URL: https://codereview.chromium.org/1210153007

Cr-Commit-Position: refs/heads/master@{#29397}

The enumerable expression in a for-in/of loop is supposed to have a TDZ for any
lexically bound names in that loop (there can be more than one with destructuring).

This patch accomplishes this with an almost-correct desugaring. The only thing missing
is proper debugger support (the let declarations added by the desugaring, while invisible
to code due to shadowing, are visible to the debugger).

BUG=v8:4210
LOG=n

Review URL: https://codereview.chromium.org/1218543003

Cr-Commit-Position: refs/heads/master@{#29396}

The asm.js spec decides the type of numeric literals in several places
based on if they contain a ".".
http://asmjs.org/spec/latest/

Adding methods so that AST Literals can be checked for containg a dot.

Adding a cctest that this information is available.

LOG=N
BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=test-parsing
R=rossberg@chromium.org,titzer@chromium.org

Review URL: https://codereview.chromium.org/1201783003

Cr-Commit-Position: refs/heads/master@{#29395}

BUG=chromium:497295
R=jarin@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1216023003

Cr-Commit-Position: refs/heads/master@{#29394}

Revert of [test262-es6] Update to 2011-06-29 (patchset #1 id:1 of https://codereview.chromium.org/1220793005/)

Reason for revert:
[Sheriff] Runner has some infra failures:
http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug/builds/4020/steps/Test262-es6%20-%20no%20variants/logs/stdio

Original issue's description:
> [test262-es6] Update to 2011-06-29
>
> This includes one harness fix but introduces a few new failures. No
> new bugs exposed though.
>
> BUG=N
> LOG=N
> R=littledan@chromium.org, adamk@chromium.org
>
> Committed: https://crrev.com/2e877628803f238dd33c3409413cd7778e36a2b6
> Cr-Commit-Position: refs/heads/master@{#29392}

TBR=littledan@chromium.org,adamk@chromium.org,arv@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=N

Review URL: https://codereview.chromium.org/1212163008

Cr-Commit-Position: refs/heads/master@{#29393}

This includes one harness fix but introduces a few new failures. No
new bugs exposed though.

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

Review URL: https://codereview.chromium.org/1220793005

Cr-Commit-Position: refs/heads/master@{#29392}

This resolves the mirror-object test failure.

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

Review URL: https://codereview.chromium.org/1214903009

Cr-Commit-Position: refs/heads/master@{#29391}

Revert of [strong] Add tests for loading from proxy, super, with access checks (patchset #4 id:80001 of https://codereview.chromium.org/1193633003/)

Reason for revert:
[Sheriff] Breaks gc stress:
http://build.chromium.org/p/client.v8/builders/V8%20GC%20Stress%20-%202/builds/3968

Original issue's description:
> [strong] Add tests for loading from proxy, super, with access checks
>
> Followup for https://codereview.chromium.org/1168093002/
>
> These seem to already function correctly without the need for further runtime
> changes.
>
> There will be a final follow-up for interceptors.
>
> BUG=v8:3956
> LOG=N
>
> Committed: https://crrev.com/ea4e568363f48955e7de6b538e559132e9899c86
> Cr-Commit-Position: refs/heads/master@{#29389}

TBR=rossberg@chromium.org,conradw@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3956

Review URL: https://codereview.chromium.org/1218123003

Cr-Commit-Position: refs/heads/master@{#29390}

Followup for https://codereview.chromium.org/1168093002/

These seem to already function correctly without the need for further runtime
changes.

There will be a final follow-up for interceptors.

BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1193633003

Cr-Commit-Position: refs/heads/master@{#29389}

v8::Internal::List will DCHECK when indexing out of the array, even if just to
get the address, and the value is never used. So this construct will fail:

    memcpy(p, &data[0], length);

When data is empty and length is 0.

BUG=chromium:505778
R=mstarzinger@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1216853003

Cr-Commit-Position: refs/heads/master@{#29388}

This makes sure that both, the shared function info and it's optimized
code map get revisited when the code map is evicted from the flusher.

R=hpayer@chromium.org
TEST=mjsunit/debug-set-variable-value

Review URL: https://codereview.chromium.org/14703009

Cr-Commit-Position: refs/heads/master@{#29387}

BUG=

Review URL: https://codereview.chromium.org/1214333002

Cr-Commit-Position: refs/heads/master@{#29386}

R=verwaest@chromium.org
BUG=chromium:505370
LOG=N

Review URL: https://codereview.chromium.org/1218023002

Cr-Commit-Position: refs/heads/master@{#29385}

Revert "Revert relanded strong property access CL"

Regression issues should be solved. Initial patchset is the original, subsequent patchsets are the fixing modifications.

This reverts commit 4ac7be56.

BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1199983002

Cr-Commit-Position: refs/heads/master@{#29384}

Revert of Let GC select the collector when the external memory allocation limit is reached (patchset #1 id:1 of https://codereview.chromium.org/1201993002/)

Reason for revert:
results in a scavenge storm if scavenge doesn't free enough memory

Original issue's description:
> Let GC select the collector when the external memory allocation limit is reached
>
> BUG=none
> R=hpayer@chromium.org
> LOG=n
>
> Committed: https://crrev.com/93d6216099b60e95bc816bcc913f8f841ee795b6
> Cr-Commit-Position: refs/heads/master@{#29235}

TBR=hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Review URL: https://codereview.chromium.org/1215513004

Cr-Commit-Position: refs/heads/master@{#29383}

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

Review URL: https://codereview.chromium.org/1216073004

Cr-Commit-Position: refs/heads/master@{#29382}

Also fixes a crankshaft bug with strong implicit conversions.

It turns out that the implicit conversion of oddball values
is smushed into so many places in crankshaft that it would
have been pretty invasive surgery to make everything fall
out naturally.

BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1216463003

Cr-Commit-Position: refs/heads/master@{#29381}

Move the arithmetic shift from Int32MulHigh to a following Int32Add on ARM64.
This graph is commonly generated on reduction of signed integer division.

Review URL: https://codereview.chromium.org/1209413008

Cr-Commit-Position: refs/heads/master@{#29380}

BUG=

Review URL: https://codereview.chromium.org/1221643004

Cr-Commit-Position: refs/heads/master@{#29379}

This change makes possible to save and restore the FP registers
in the Prologue and Return parts for the CallAddress kind functions.

TEST=test-simplified-lowering/RunNumberDivide_2_TruncatingToUint32,
     test-simplified-lowering/RunNumberMultiply_TruncatingToUint32

Review URL: https://codereview.chromium.org/1191513003

Cr-Commit-Position: refs/heads/master@{#29378}

BUG=chromium:504875
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1215103003

Cr-Commit-Position: refs/heads/master@{#29377}

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1213383002

Cr-Commit-Position: refs/heads/master@{#29376}

R=machenbach@chromium.org
BUG=v8:4135
NOTRY=true
LOG=N

Review URL: https://codereview.chromium.org/1217993002

Cr-Commit-Position: refs/heads/master@{#29375}

The deoptimizer (and probably various other places) cannot deal properly
with recursive function inlining, so we disallow it in TurboFan as well.
We might want to reconsider that decision at some point in the future.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1211243007

Cr-Commit-Position: refs/heads/master@{#29374}

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/1214303002

Cr-Commit-Position: refs/heads/master@{#29373}

Reland of https://crrev.com/bf2bbc8ba508ccd21edf3c08d2e4192c4764ae91

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-498022
BUG=chromium:498022
LOG=N

Review URL: https://codereview.chromium.org/1214483008

Cr-Commit-Position: refs/heads/master@{#29372}

BUG=

Review URL: https://codereview.chromium.org/1213773002

Cr-Commit-Position: refs/heads/master@{#29371}

R=mvstanton@chromium.org
BUG=v8:4132
LOG=N

Review URL: https://codereview.chromium.org/1214953003

Cr-Commit-Position: refs/heads/master@{#29370}

BUG=chromium:505007
LOG=N

Review URL: https://codereview.chromium.org/1219693003

Cr-Commit-Position: refs/heads/master@{#29369}