Prepare push to trunk.  Now working on version 3.24.33.

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

Review URL: https://codereview.chromium.org/153973003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19087 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Test for miscellaneous (pre)parse errors.

BUG=3126
LOG=N
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/154133002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Allow externalizing strings in old pointer space.

This is what I think is a better solution to the "external strings in
old pointer space" problem. Basically, it is an issue because GC scans
all fields of objects in old pointer space and if the cached address
of the backing store is unaligned, it looks like a heap object, boom.

The solution here is to use short external strings when we externalize
a string in old pointer space, and when the address is unaligned.
Short external strings don't cache the address, so GC has no issues.

BUG=268686
LOG=Y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/146183006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Optimize redundant HCompareMap instructions with known successors.

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/150663005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Move failing ASSERT on ARM to a more sane place.
Objects can actually be stored into themselves. This fails when no write
barrier is needed (eg, the object was just allocated).

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/148733005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19095 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use mutex in PostponeInterruptScope.

To avoid race with e.g. StackGuard::RequestInstallCode called from another
thread when both access postpone_interrupts_nesting_.

R=mvstanton@chromium.org
BUG=290964
LOG=N

Review URL: https://codereview.chromium.org/138833006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix %OptimizeFunctionOnNextCall wrt concurrent compilation.

If a function is marked or queued for concurrent compilation,
%OptimizeFunctionOnNextCall becomes a no-op. That can be wrong
if concurrent recompilation does not complete at the time we
expect the function to have been optimized.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/151343006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19100 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Check elimination improvement: propagation of state through phis is supported, CheckMap narrowing implemented.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/141653009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19102 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'