The current specification has GeneratorFunction() be like Function(),
except that it makes generator instances.  This commit implements that
behavior.  It also fills in a piece of the implementation where
otherwise calling GeneratorFunction or GeneratorFunctionPrototype would
cause an abort because they have no code.

R=mstarzinger@chromium.org
TEST=mjsunit/harmony/generators-iteration
TEST=mjsunit/harmony/generators-runtime
BUG=v8:2355,v8:2680

Review URL: https://codereview.chromium.org/15218004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15084 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This may be used to display debugging information.

BUG=
R=danno@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/16509005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15083 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
BUG=v8:2720

Review URL: https://codereview.chromium.org/16739008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16815002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16814003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15080 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When a generator suspends, it saves its state out to the heap and
unwinds try handlers but doesn't pop anything off the stack.  Instead it
relies on no GC happening between the suspend and the return from the
generator.  However this was not the case: boxing the result object
could cause GC, which would try to traverse the stack but would
misinterpret words from unwound try handlers as heap objects.

This CL changes to allocate the result objects before the suspend.  It
also removes the generators-iteration skip introduced in r15065.

R=mstarzinger@chromium.org
TEST=mjsunit/harmony/generators-iteration
BUG=

Review URL: https://codereview.chromium.org/16801006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15079 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16812003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15078 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=248076
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16782004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15077 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/16641003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15076 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16304008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15075 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
TEST=SourceURLSupportForNewFunctions, LogExistingFunctionSourceURLCheck
R=jkummerow@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/16035027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15074 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

It produces smaller binary with almost the same performance.

R=benm@chromium.org, jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15929009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15071 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r15060 (8cdd204)

Original commit message:
- set "can be minus zero" flag properly so minus-zero checks are skipped
- skip "integer result?" check in division code when uses are truncating
- drive-by cleanup: consolidated computation of kCanOverflow flag for Add/Sub into range inference phase

BUG=v8:2132
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/16645007

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15070 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/16276010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15067 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=244580
R=jkummerow@chromium.org, loislo@chromium.org

Review URL: https://codereview.chromium.org/16771002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15066 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

A GC-related bug has started showing up after r15060 that unfortunately
I haven't been able to reproduce.  Disable generators by default for the
Canary push.

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16638011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15065 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/16773002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15064 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test-thread-termination/TerminateMultipleV8ThreadsDefaultIsolate
times out on the MIPS simulator.

Allow the timeouts until this is fixed.

BUG=v8:2657
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/16203005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15063 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Add barriers using MIPS 'sync' instructions as needed for SMP
systems.

BUG=246947
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/15981017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This includes r15032, r15030 and r15005.

R=ulan@chromium.org
BUG=248076

Review URL: https://chromiumcodereview.appspot.com/16482004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- set "can be minus zero" flag properly so minus-zero checks are skipped
- skip "integer result?" check in division code when uses are truncating
- drive-by cleanup: consolidated computation of kCanOverflow flag for Add/Sub into range inference phase

BUG=v8:2132
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16741002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also fix a typo in an assertion in scanner.h.

R=mstarzinger@chromium.org
BUG=248025
TEST=mjsunit/regress/regress-crbug-248025.js

Review URL: https://codereview.chromium.org/16549003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15059 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16537005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15058 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- In the INT32 BinaryOpStub, fix type feedback collection for DIV,
  bringing it in line with other platforms.
- In Lithium codegen, emit proper inlined code, don't call the stub.
- Drive-by fix: assert appropriate CpuFeaturesScope for SDIV.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/16082008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/15855012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Changed cctest/test-cpu-profiler/NativeAccessorNameInProfile2 to make a few warm-up cycles before starting profiler so that accessor invocations performed via monomorphic inline caches and slow paths traces do not distort the profile.

Drive-by: removed logging code that was used to diagnose NativeAccessorNameInProfile2 failures on Windows.

BUG=None
R=jkummerow@chromium.org, loislo@chromium.org

Review URL: https://codereview.chromium.org/16758007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15055 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16621004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15054 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The abs_d instruction was implemented wrongly in the simulator,
it doesn't reverse the sign of the -0 number.

This commit fixes the abs_d instruction implementation.

TEST=msjunit/math-abs

BUG=

Review URL: https://codereview.chromium.org/15906014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15053 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r15045 (cce366f)

Original commit message:
Strict-equality only has one check and cannot deopt. Should therefore not be part of the stub.

BUG=

Review URL: https://codereview.chromium.org/16690008
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15050 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r15028 (258a047)

Original commit message:
Update the generators implementation to make "next" also do the job of
what was previously called "send" by taking an optional argument.
Remove send, and do a bunch of renamings.

BUG=v8:2355, v8:2715

Review URL: https://codereview.chromium.org/16735005
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15049 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r15027 (3ffb343)

Original commit message:
The comments in ic-arm.cc::LoadIC indicated that the receiver should be
both in a register and on the stack. This isn't true in fact: the code
is careful to spill the receiver if needed.

This CL also fixes up a mistaken use of this convention in VisitYield.

BUG=

Review URL: https://codereview.chromium.org/16131004
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15048 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r15024 (1a76177)

BUG=

Review URL: https://codereview.chromium.org/16005015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15047 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

r14919 forgot three AssertNoAllocation -> DisallowHeapAllocation replacements.

BUG=v8:2719
R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16093041

Patch from Kang-Hao (Kenny) Lu <kennyluck@csail.mit.edu>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15046 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

use compare nil ic only for non-strict equality. strict-equality only has one check and cannot deopt. should therefore not be part of the stub.

BUG=
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/16732002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15045 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15044 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15043 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15042 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/16730004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15039 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Array access fix: g++ darwin 4.2.1 compiler clamped array index to 0 when confronted with negative indices.

BUG=247303
R=jkummerow@chromium.org, ulan@chromium.org

Review URL: https://codereview.chromium.org/15855015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15038 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change results in less scan on scavenge memory chunks.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/15896037

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15037 ce2b1a6d-e550-0410-aec6-3dcde31c8c00