This change has been inspired by Slava Chigrin <vchigrin@yandex-team.ru> (https://codereview.chromium.org/689663002/)

R=mvstanton@chromium.org, vchigrin@yandex-team.ru

Review URL: https://codereview.chromium.org/686103004

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R=jarin@chromium.org
BUG=chromium:429159
TEST=mjsunit/regress/regress-crbug-429159
LOG=N

Review URL: https://codereview.chromium.org/697473006

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TBR=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/695763003

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TBR=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/698513003

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BUG=410721
LOG=n
TEST=script_test.py
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/698513002

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Not clearing can lead to a crash under following conditions:
1. Backing store of a weak map is allocated in large object space.
2. The backing store is marked incrementaly via the weak map.
3. The weak map is updated and gets a new backing store.
4. The store buffer overflows and marks the chunk of the old backing store as
"scan on scavenge."
5. Mark-compact collection kills some elements of the weak map. Note that the
old backing store survives because it was marked incrementally, but its dead
elements are not cleared.
6. Scavenger iterates over the old backing store, tries to move a dead object
and crashes.

BUG=v8:3631
LOG=N
TEST=cctest/test-heap/Regress3631
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/686783003

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This simplifies escape handling and makes it easier to extend escapes for ES6.

PushBack just before detecting ILLEGAL is unnecessary, since we will abort the
scanning / parsing anyway at that point, and it doesn't matter where the cursor
exactly is. The error messages w/ PushBack are not any better or more correct
than without.

In addition: remove a comment about handling invalid escapes gracefully when we
no longer do. (*)

This CL includes a behavioral change: For input "var r = /foobar/g\urrrr;" we
used to report "unexpected_token: ILLEGAL" for "\u", but now we report
malformed_regexp_flags which is a more correct error message. (Note that the
code for reporting invalid_regexp_flags was dead, and invalid_regexp_flags is
not the right error message.)

Note that the V8 is more relaxed about unicode escapes in regexp flags than ES6
(see
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-regular-expressions )
and this CL doesn't change it. (V8 accepts any \uxxxx, ES6 spec says only a
certain value range is acceptable.)

(*) Code archaeology:

Originally, doing PushBack in ScanHexEscape made sense (see e.g., here
https://codereview.chromium.org/5063003/diff/6001/src/prescanner.h ), since we
wouldn't return ILLEGAL but treat an invalid escape sequence "\uxxxx" as
"uxxxx".

(The repo at that point contains another instance of the same function, from the
initial commit. The logic is the same.)

This behavior was changed in a "renaming" commit
https://codereview.chromium.org/7739020.

BUG=
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/684873002

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additionally rename data-flow.* to bit-vector.* as at some point these file became very inaccurately named

BUG=
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/683243005

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R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/690713003

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BUG=chromium:419220
LOG=y
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/697643002

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Since the input float64 is in the range of [0, 2^32-1], the upper 32 bits of output register
should be zero.

BUG=
R=bmeurer@chromium.org, titzer@chromium.org

Review URL: https://codereview.chromium.org/644993002

Patch from Weiliang Lin <weiliang.lin@intel.com>.

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The turbocheck target is similar to quickcheck, but runs only the
turbofan variant.

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/697573002

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TEST=cctest/test-simplified-lowering
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/685993003

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Also remove the LEA matching from x64, since it was never really
effective. We'll optimize that once we're correct.

TEST=cctest,unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/652363006

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R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/689883003

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BUG=410721
LOG=n
TEST=script_test.py
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/682863006

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API=v8::Exception::GetMessage
BUG=chromium:427954
R=yangguo@chromium.org
LOG=Y

Committed: https://code.google.com/p/v8/source/detail?r=25015

Review URL: https://codereview.chromium.org/687253002

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R=jarin@chromium.org
BUG=v8:3660
LOG=N

Review URL: https://codereview.chromium.org/677843005

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R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/685393002

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add floor, ceil, round (truncate and away from zero) for arm64.

R=bmeurer@chromium.org, dcarney@chromium.org, mstarzinger@chromium.org, rodolph.perfetta@arm.com
TEST=test/mjsunit/asm/math-floor.js,test/mjsunit/asm/math-ceil.js,test/unittest/compiler/js-builtin-reducer-unittest.cc

Review URL: https://codereview.chromium.org/677433002

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TBR=yangguo@chromium.org, machenbach@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/688813002

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TBR=yangguo@chromium.org, machenbach@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/688803003

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API=v8::Exception::GetMessage
BUG=chromium:427954
R=yangguo@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/687253002

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TBR=mstarzinger@chromium.org,bmeurer@chromium.org

Review URL: https://codereview.chromium.org/691623004

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R=rodolph.perfetta@gmail.com, ulan@chromium.org, bmeurer@chromium.org, rodolph.perfetta@arm.com

Review URL: https://codereview.chromium.org/682643002

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R=svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/686053003

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BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/683933004

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TBR=bmeurer@chromium.org,mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/692823002

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T=jarin@chromium.org

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/688633002

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TBR=bmeurer@chromium.org
BUG=chromium:428315
LOG=n

Review URL: https://codereview.chromium.org/693473002

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This bug (mismatch between new[] and free) was found by running VC++'s /analyze on all of Chrome.

BUG=chromium:427616
LOG=N
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/686193004

Patch from Bruce Dawson <brucedawson@chromium.org>.

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R=jarin@chromium.org
BUG=v8:3660
LOG=N

Review URL: https://codereview.chromium.org/665833003

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The HeapIterator implies DisallowHeapAllocation, but Script::GetWrapper
may allocate.

LOG=N
R=jkummerow@chromium.org
BUG=chromium:410033

Review URL: https://codereview.chromium.org/680283002

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port r24987

original commit message:

  EmitCreateIteratorResult loads map from function's context

  Caching or serialization can cause full-codegen output to be shared
  between contexts. CreateIteratorResult, however, was doing the wrong
  thing by creating results with the map that was current when the code
  was generated. Instead, we should chase pointers to load the right map
  from the function's context.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/674073004

Patch from Chunyang Dai <chunyang.dai@intel.com>.

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port r24976.

original commit message:

  Classes: Add super support in methods and accessors
  This is done by installing the [[HomeObject]] on the method and the
  accessor functions.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/687273005

Patch from Chunyang Dai <chunyang.dai@intel.com>.

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R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/684263002

Patch from André Baixo <baixo@google.com>.

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BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/684193002

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R=titzer@chromium.org

Review URL: https://codereview.chromium.org/687103004

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R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/686213002

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Namely, -Winconsistent-missing-override. No behavior change.

BUG=v8:3658
LOG=N
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/688533002

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