We removed an HDiv by hand which was still used by an HChange. The
solution is letting dead code removal do the cleanup.

Removed a fragile "optimization" (looking through an HChange), too,
this obviously never triggered and is hard to get right given all our
global invariants and state/type/... changes.

The repro is a bit tricky, because you need inlining to make our
representations and types disagree in this case.

LOG=y
BUG=334708
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/143903016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18737 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/144023007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18732 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18709, due to deopt fuzzer issue.
TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/143983010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18731 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/141653013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18728 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/138163014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r18719 (13303b7a)

Original commit message:
Clean up some zone/isolate handling in AST and its visitors on the way.

(Based on https://codereview.chromium.org/103743004/)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/143873005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18726 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/144263002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18723 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/138903009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r18705 (78b4ea3)

Original commit message:
This fixes slow for-in over frozen objects.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/144023002

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18721 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18714 for breaking webkit tests with an assert.

TBR=dcarney@chromium.org

Review URL: https://codereview.chromium.org/144143002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18720 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Clean up some zone/isolate handling in AST and its visitors on the way.

(Based on https://codereview.chromium.org/103743004/)

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

Review URL: https://codereview.chromium.org/102563004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3104
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/143953005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18718 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The Array constructor has a needless dependency on an input argument
that is a Cell. It uses this to walk through to an AllocationSite.
The dependency hampers future work. Instead, pass the AllocationSite
as input to the Array constructor.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/140963004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18716 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/142973005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/143973004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18712 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Works around apparent scoping bug in VS, the only change to before being a method rename in the test suite:

--- a/test/cctest/test-types.cc
+++ b/test/cctest/test-types.cc
@@ -153,7 +153,7 @@ struct ZoneRep {
     return reinterpret_cast<ZoneList<ZoneType*>*>(AsTagged(t));
   }

-  static Zone* Region(Zone* zone, Isolate* isolate) { return zone; }
+  static Zone* ToRegion(Zone* zone, Isolate* isolate) { return zone; }
 };

@@ -168,7 +168,7 @@ struct HeapRep {
   static Object* AsConstant(Handle<Type> t) { return Box::cast(*t)->value(); }
   static FixedArray* AsUnion(Handle<Type> t) { return FixedArray::cast(*t); }

-  static Isolate* Region(Zone* zone, Isolate* isolate) { return isolate; }
+  static Isolate* ToRegion(Zone* zone, Isolate* isolate) { return isolate; }
 };

@@ -183,7 +183,7 @@ struct Tests : Rep {
       isolate(CcTest::i_isolate()),
       scope(isolate),
       zone(isolate),
-      T(Rep::Region(&zone, isolate), isolate) {
+      T(Rep::ToRegion(&zone, isolate), isolate) {
   }

   static void CheckEqual(TypeHandle type1, TypeHandle type2) {

R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/143693003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The swept memory is now collected on the foreground thread, so it's not
stealing the memory from the threads anymore

BUG=v8:3104
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/143463005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/137783023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also move the GC stress configuration from the buildbot to the test runner.

BUG=
R=jkummerow@chromium.org, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/141653008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3104
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/143193002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

That way, MCC doesn't need to know about the state the threads are in to
steal free memory from them.

BUG=v8:3104
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/143283002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18706 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes slow for-in over frozen objects.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/135903014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18705 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We don't have any type feedback in %_NumberToString(), so it's
a bug to assume Type::Number here.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/143893002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/134733005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18701 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The test is blocking the v8 lkgr. It will be unmarked again after there is infrastructure to disable it on GC stress only.

BUG=
TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/143463004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18700 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r18696 (6e4b51b4)

BUG=
R=gergely@homejinni.com

Review URL: https://codereview.chromium.org/143663002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18699 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The tests are blocking the v8 lkgr. They will be unmarked again after there is infrastructure to disable them on GC stress only.

TBR=mvstanton@chromium.org
BUG=

Review URL: https://codereview.chromium.org/139343008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/143523002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18697 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/143213003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18696 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/143403002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18695 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/139343007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18691 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
R=dcarney@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/143063003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18689 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This previous change broke DoubleToIStub on armv6:
https://code.google.com/p/v8/source/detail?r=16322

The problem is that DoubleToIStub::Generate assumed that it could safely use the ip register, but on armv6 the ubfx implementation will clobber any previous value stored there.  So instead, pick another register.

Test case:
for (var i=0; i<2; i++) {
	v = 4294967295;
	v &= -2;
	print(v)
	}

This should print -2 twice, but on armv6 without this patch, it prints -2 followed by 2046.

This problem causes sunspider's bitops-nsieve-bit, crypto-md5 and crypto-sha1 tests to generate incorrect results (but the results are not checked for validity in sunspider-1.0 as available in chromium, but are checked and reported as incorrect in sunspider-1.0.2).

Thanks to Tomasz Kilarski for helping out with this.

R=bmeurer@chromium.org, rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/131823004

Patch from Mostyn Bramley-Moore <mostynb@opera.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18688 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18685 for breaking WebKit tests.

TBR=arv@chromium.org

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18687 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

http://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.setprototypeof

This just exposes the internal %SetPrototype and adds all the required
type checks as specified.

BUG=v8:2675
LOG=Y
R=dslomov@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/141913002

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18685 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This patch makes String::WriteUtf8 replace invalid code points (i.e. unmatched
surrogates) with the unicode replacement character when REPLACE_INVALID_UTF8 is
set.  This is done to avoid creating invalid UTF-8 output which can lead to
compatibility issues with software requiring valid UTF-8 inputs (e.g. the
WebSocket protocol requires valid UTF-8 and terminates connections when invalid
UTF-8 is encountered).

R=dcarney@chromium.org

BUG=

Review URL: https://codereview.chromium.org/121173009

Patch from Felix Geisendörfer <haimuiba@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We only need the values within them. Function calls to Array from optimized code needed the cell in the past, but no longer.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/141893002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18682 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/143093002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18677 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Currently there are two kinds of "vtables" used in the load/store stub
compilers: kind() and C++'s own vtables. This is a bit confusing, and
this is a step towards simplifying things.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/141763002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18676 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/105503006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18675 ce2b1a6d-e550-0410-aec6-3dcde31c8c00