Revert "Use V8_FINAL and V8_OVERRIDE in various places, fixing bugs revealed by them."

This reverts commit r16232 for breaking the
tools/gen-postmortem-metadata.py script. Will reland without the
objects.{cc,h} changes.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/23143007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland "Use V8_FINAL and V8_OVERRIDE in various places, fixing bugs revealed by them.".

- Use V8_FINAL and V8_OVERRIDE in Ast classes.
- Use V8_FINAL and V8_OVERRIDE in Lithium mips backend.
- Use V8_FINAL and V8_OVERRIDE in Lithium arm backend.
- Use V8_FINAL and V8_OVERRIDE in Lithium x64 backend.
- Use V8_FINAL and V8_OVERRIDE in Lithium ia32 backend.
- Use V8_FINAL and V8_OVERRIDE in Lithium classes.
- Use V8_FINAL and V8_OVERRIDE in Hydrogen classes.

TBR=dslomov@chromium.org

Review URL: https://codereview.chromium.org/22796020

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16244 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Replace OS::MemCopy with memcpy in typed array initialization.

This is an attempt to fix a weird perf regression on MacOS X 10.6 bot.
Perf regression is not reproducible on MacOS X 10.8.
This difference in memory-copying routines is the only reasonable
difference in the algorithm. We should try and see.

R=bmeurer@chromium.org
BUG=270642

Review URL: https://codereview.chromium.org/23330005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add X87 implementations for Integer32ToDouble, DoubleToI, DoubleToSmi

Additionally refactor the X87Stack tracking

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/20781007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add warning to cctest when running multiple tests in sequence.

R=mstarzinger@chromium.org
BUG=v8:2848

Review URL: https://codereview.chromium.org/23067008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Promote ArrayBuffer, DataView and typed arrays to non-experimental.

The primary reason for this change is to bake these guys into the
snapshot.

Flag definitions (--harmony-typed-arrays, --harmony-array-buffer) are
still there so that Blink does not complain, but they are noop and
default to true.

R=mstarzinger@chromium.org
BUG=270527

Committed: https://code.google.com/p/v8/source/detail?r=16137

Committed: https://code.google.com/p/v8/source/detail?r=16228

Review URL: https://codereview.chromium.org/22390008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix a bug in Div when all uses are truncating

Refine the related test cases to cover truncating cases

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/22964004

Patch from Weiliang Lin <weiliang.lin2@gmail.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Remove platform-specific dead code for KeyedStores

Port r16227 (02df4098)

BUG=

Review URL: https://codereview.chromium.org/22815014

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Fix bug that prevents JALR to JAL optimizations.

TEST=

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/23072023

Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use CheckUsesForFlag to check flag in uses list

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/22862009

Patch from Weiliang Lin <weiliang.lin2@gmail.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Improve detection of C++11 features.

Also improve detection of V8_INFINITY while we're at it.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/23323003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Adding missing operator!= for Handle and Persistent.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/22932004

Patch from Marja Hölttä <marja@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Prepare push to trunk.  Now working on version 3.21.2.

R=hpayer@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/23242009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Cleanup FooSpace::VerifyObject and ElementsAccessor::Validate.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/23273004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Pass checked values to HLoadNamedField, removing the need for extra type-check field.

R=titzer@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22831003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Allow both "--no<flag>" and "--no-<flag>" to disable <flag>.

We shouldn't need to know whether to use --no or --no- as prefix.
The latter is more intuitive and also what chromium uses.

R=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/22851009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix "Hole" leak in TryBuildConsolidatedElementLoad

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/23361007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix migration checks and extend them to the Scavenger.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/23060018

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Cleaned up nil comparisons in Hydrogen.

This consists basically of 2 parts:

   * Restructured BuildCompareNil to make the logic behind it clearer.
     Note that it is intentionally written in a quite stylized way.

   * Replaced a usesless IfBuilder by a plain HInstruction, removing
     some empty blocks.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/22305004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16266 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Add (mostly Chromium-compatible) V8_OS_* defines to v8.gyp."

This reverts commit r16238 for not being able to use the defines
outside of libv8 (i.e. in tests). Will reland the #define's in a
build config header style.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/22861022

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16267 ce2b1a6d-e550-0410-aec6-3dcde31c8c00