Reland fix: Consume less memory.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/636233006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24597 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/653923002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/654833002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24595 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/614883003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24594 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The following AST node types were improved (in decreasing number of
importance for asm.js-like source code): Expression, VariableProxy,
Assignment, BinaryOperation, Declaration, Property, Call.

BUG=chromium:417697
LOG=y
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/646803004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24593 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This prevents an unnecessary deopt-reopt cycle due to type feedback
having been thrown away as part of recompiling with deopt support.
(For non-snapshotted functions this is not an issue.)

Bonus: Add missing space in --trace-ic output, and provide names for
PropertyDescriptor's methods, because passing anonymous functions to
SetUpLockedPrototype frightens and confuses our FuncNameInferrer.

R=hpayer@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/648243002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/642923003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24591 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/652163002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24590 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=chromium:418923,chromium:410721
LOG=n
TEST=script_test.py
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/657483002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24589 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/649183003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24588 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/646393002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

[turbofan] Output schedule, instructions and register allocator in C1 visualizer format when --turbo-trace is specified.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/637313002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24583 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

As the register allocator cannot reuse spill slots, SameAsFirst
constraint means that we would have to do an expensive move to a
differen spill slot if we choose to spill. Forcing the operand
to a register is cheaper.

In zlib, we get >10% speed-up for ia32, >25% for x64.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/650083003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24580 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/653863002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24579 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Apparently

 SMMLS r, b, c, a

computes

 r = ((a << 32) - b * c) >> 32

while the documentation is kinda misleading and states that it should
compute

 r = a - ((b * c) >> 32)

The actual behavior is kinda useless, so we drop the instruction again.

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

Review URL: https://codereview.chromium.org/654653004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24577 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/648283002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24575 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/648413003

Patch from Paul Lind <paul.lind@imgtec.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24574 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fix mips64 and x87 builds.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/644463005

Patch from Paul Lind <paul.lind@imgtec.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24573 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r24560.

original commit message:
  Support for super assignments in for..in.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/653823002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24572 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r24546 (c3443cd)

Original commit message:
This is required to fix a tricky branch fusion bug on ARM, which was
caused by the interaction between the architecture-independent and
architecture-specific parts of the InstructionSelector. In the end it
wasn't worth sharing a few common lines of code for the additional
complexity, especially if we also want to properly support architectures
without any dedicated flags register (i.e. MIPS).

TEST=mjsunit,unittests
BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/644973003

Patch from Balazs Kilvady <balazs.kilvady@imgtec.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24571 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r24560 (ef1070b)

BUG=v8:3330
LOG=N
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/641803003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24570 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/641533004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24569 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/649203002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24568 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=erik.corry@gmail.com, ulan@chromium.org

Review URL: https://codereview.chromium.org/629903003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24567 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 0ab306041a6eba99fe5e2ef78251de137321f559.

"Fix" make scheduler run out of memory.

TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/656473002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24566 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Move the FrameAndConstantPoolScope and ConstantPoolUnavailableScope out of the arm architecture directory to enable them to be used on all architectures.

R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/609843002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24565 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/654583002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24564 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The scheduler rewires control based on the last *control*
node that appears in the schedule of a block. This is not
sufficient to account for dependencies.

This patch adds additional dependencies to floating control
nodes. Given a floating control node A, every non-control
dependency of every node B that depends on A is introduces
as an additional dependency of A.

This allows the scheduler to correctly schedule two
diamonds A, B, if their only correct schedule is to
schedule B into the ifTrue successor in A.

TEST=cctest/test-scheduler/NestedFloatingDiamonds
R=mstarzinger@chromium.org, titzer@chromium.org

Review URL: https://codereview.chromium.org/602083003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24561 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org, arv@chromium.org
BUG=v8:3330
LOG=N

Review URL: https://codereview.chromium.org/639243003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24560 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/646383002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24558 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/650863002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24555 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=mjsunit/asm/int32-tmod,unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/649083005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24554 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 24552.

TBR=rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/648163002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24553 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/618803003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24552 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

1. Fixed typo. lenght -> length. Arbitary -> Arbitrary.
2. TypedArray DataView property getters should throw TypeError when called on
    incompatible types.
3. Should not use integers as keys in the arbitrary-properties test.

R=dslomov@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/652603002

Patch from Xueqiao Xu <xuq@google.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24551 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Prevent snapshot_blob.bin from being unnecessarily generated when building all targets.
When such file exists, chrome_tests assumes we will load V8's initial snapshot from
external files, even when such feature is turned off, which prevents the tests from
being successfully compiled.

BUG=421063
LOG=N
R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/643163002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24550 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=machenbach@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/646373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24549 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/650843002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24548 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The problem was that there can be several multi-byte UTF-8 characters near the
splitting point of the data chunks, and the code didn't handle it properly.

This was also the source of crbug.com/417891 - I thought the crash can only
happen when V8 is passed invalid UTF-8 data, but it can also happen in the
abovementioned case. After the fix, we handle the valid UTF-8 case and also
guard against invalid UTF-8 data.

R=yangguo@chromium.org
BUG=chromium:417891
LOG=N

Review URL: https://codereview.chromium.org/654503002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24547 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is required to fix a tricky branch fusion bug on ARM, which was
caused by the interaction between the architecture-independent and
architecture-specific parts of the InstructionSelector. In the end it
wasn't worth sharing a few common lines of code for the additional
complexity, especially if we also want to properly support architectures
without any dedicated flags register (i.e. MIPS).

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

Review URL: https://codereview.chromium.org/651783003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24546 ce2b1a6d-e550-0410-aec6-3dcde31c8c00