Array builtins need to be prevented from changing frozen objects, and changing structure on sealed objects.

BUG=299979
LOG=Y
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/80623002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18164 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Optimize NumberTagU

Port r18162 (8377a09b)

Original commit message:
Optimize register constaints for NumberTagU Lithium instruction, and adjust code generated to match.

BUG=
R=gergely@homejinni.com

Review URL: https://codereview.chromium.org/97083002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Fix --new-string-add feature.

This commit fixes the arguments of NewStringAdd stub in full-codegen.

BUG=
R=gergely@homejinni.com

Review URL: https://codereview.chromium.org/96593005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18166 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Drop IsPregenerated() and allow_stub_calls flag.

This also removes the fixed register hack that was required to support RecordWriteStub in the snapshot.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/96853003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18167 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Fix failures on Octane 2.0 zlib benchmark.

The bug was introduced in af9504e.

The zlib benchmark triggers long branch mode on MIPS, in which
at register is clobbered after every branch.

TEST=benchmarks/octane/zlib
BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/95203005

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18168 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Drop IsPregenerated() and allow_stub_calls flag.

Port r18167 (1e4b11e0)

Original commit message:
This also removes the fixed register hack that was required to support RecordWriteStub in the snapshot.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/97373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18169 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Don't run tests if build fails in quickcheck.

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/97803002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18170 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'