This also implements --trap-on-deopt on x64 and simplifies the
implementation of this flag on all architectures.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/12223053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13633 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12211095

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13632 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Simplified the HeapStatistics class a bit, following Uncle Bob's advice that
adding accessors to DTOs only satisfies some design fundamentalists, but serves
no other purpose. :-)

Review URL: https://codereview.chromium.org/12207076

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13631 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/12208088

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13630 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/12223039

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13624 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/12114002
Patch from Haitao Feng <haitao.feng@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13623 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Many thanks to Vyacheslav Egorov for coming up with this test!

BUG=173907

Review URL: https://codereview.chromium.org/12212066

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13622 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=173907

Review URL: https://codereview.chromium.org/12207063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13617 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/12218051

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13614 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/12220040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13613 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Because observed arrays should always be in dictionary mode, we'll always fall
back to the JS version anyway.

Review URL: https://codereview.chromium.org/12221033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13612 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12212032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13609 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12218034

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13608 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

If MINGW_HAS_SECURE_API is defined, the definitions of localtime_s,
fopen_s, _vsnprintf_s, strncpy_s had to be renamed using #define
so they would not conflict with definitions in the standard headers.

A simpler way to handle this is to undefine MINGW_HAS_SECURE_API before
including the standard headers.

Contributed by net147@gmail.com

BUGS=
TEST=

Review URL: https://chromiumcodereview.appspot.com/12210033
Patch from Jonathan Liu <net147@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13607 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/12184015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13606 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/12177012
Patch from Zheng Z. Liu <zheng.z.liu@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13605 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Initial step towards separating IC (map check(s)), handler frontend
(prototype-check) and handler backend (actual handler code).

- Still need to split the map-check (IC) from rest of the prototype
  chain check.
- Still need to turn different parts in own code objects and cache them
  in more optimal places.

Review URL: https://chromiumcodereview.appspot.com/12207016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13604 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Windows XP does not provide secure API functions in msvcrt.dll but
newer versions of Windows do. Avoid using secure API functions for
compatibility with msvcrt.dll on Windows XP.

Contributed by net147@gmail.com

BUGS=
TEST=

Review URL: https://chromiumcodereview.appspot.com/12189010
Patch from Jonathan Liu <net147@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13603 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12225043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13602 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We were doing a redundant VCVT operation in MacroAssembler::EmitECMATruncate.
Also, setting the FPSCR exception flags is expensive on some CPUs, wo we should
try to avoid it if we can.

Thanks to Rodolph Perfetta for the input on this!

Review URL: https://chromiumcodereview.appspot.com/12217014
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12228004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13600 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/12223007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13599 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/12208011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13598 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
TEST=cctest/test-object-observe/ObservationWeakMap

Review URL: https://codereview.chromium.org/12217017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13597 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/12177017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/12211011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13595 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/12221012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13594 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/12093089

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13593 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/12041084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

object-observe.js uses weak maps to add "hidden" properties to
objects. Previously, the hash tables it was using weren't actually
weak. This patch changes the existing runtime functions to create
instances of JSWeakMap instead of exposing ObjectHashTable directly.

Review URL: https://codereview.chromium.org/12092079

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13591 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/12181012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13590 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12190003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13587 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=chromium:173974

Review URL: https://chromiumcodereview.appspot.com/12178017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13586 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This includes:
* Adding support for saving callee-clobbered double registers in Crankshaft code.
* Adding a new "HTrapAllocationMemento" hydrogen instruction to handle AllocationSiteInfo data in crankshafted stubs.
* Adding a new "HAllocate" hydrogen instruction that can allocate raw memory from the GC in crankshafted code.
* Support for manipulation of the hole in HChange instructions for Crankshafted stubs.
* Utility routines to manually build loops and if statements containing hydrogen code.

Review URL: https://codereview.chromium.org/11659022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13585 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=172488,172489
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12094036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes the following two warnings, so that "make all" builds cleanly
with Clang:

  src/arm/macro-assembler-arm.h:1410:7: error: private field
  'instructions_' is not used
        [-Werror,-Wunused-private-field]
          int instructions_;  // Number of instructions of the expected patch size.
              ^

  src/arm/simulator-arm.cc:402:20: error: variable 'words' is used uninitialized whenever 'if'
        condition is false [-Werror,-Wsometimes-uninitialized]
          } else if (argc == next_arg + 1) {
                     ^~~~~~~~~~~~~~~~~~~~
  ../src/arm/simulator-arm.cc:407:21: note: uninitialized use occurs here
          end = cur + words;
                      ^~~~~
  ../src/arm/simulator-arm.cc:402:16: note: remove the 'if' if its condition is always true
          } else if (argc == next_arg + 1) {
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~

Review URL: https://chromiumcodereview.appspot.com/12087131

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13583 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13579 (e640269)

BUG=

Review URL: https://chromiumcodereview.appspot.com/12186003
Patch from Paul Lind <plind44@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13580 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/12094082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13579 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/12087132
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13578 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13571 (c37a2f5).

Original commit message:
Support slow-mode prototypes for load and call ICs.

This changes LoadNonExistent to handle negative lookups as well.

BUG=

Review URL: https://chromiumcodereview.appspot.com/12089098
Patch from Paul Lind <plind44@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13576 ce2b1a6d-e550-0410-aec6-3dcde31c8c00