Use hash map to look for objects in the root array when serializing.

Use hash map to look for objects in the root array when serializing.

R=mvstanton@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=24826

[mvstanton, 2014-10-23 08:02:15]

I really like the new classes.
LGTM.

https://codereview.chromium.org/645533003/diff/20001/src/serialize.h
File src/serialize.h (right):

https://codereview.chromium.org/645533003/diff/20001/src/serialize.h#newcode265
src/serialize.h:265: DisallowHeapAllocation no_allocation_;
I like this use of DisallowHeapAllocation, neat!

https://codereview.chromium.org/645533003/diff/20001/src/serialize.h#newcode528
src/serialize.h:528: void SerializePrologue(AllocationSpace space, int size,
Map* map);
+1 for use of the enum instead of int.

[Yang, 2014-10-23 08:43:29]

Committed patchset #2 (id:20001) manually as 24826 (presubmit successful).

[Erik Corry, 2014-10-23 12:57:15]

erik.corry@gmail.com changed reviewers:
+ erik.corry@gmail.com

[Erik Corry, 2014-10-23 12:57:15]

https://codereview.chromium.org/645533003/diff/20001/src/serialize.cc
File src/serialize.cc (right):

https://codereview.chromium.org/645533003/diff/20001/src/serialize.cc#newcode...
src/serialize.cc:1671: // ones in the root array that are never in new space.
I think now this is _all_ the entries in the root array that are _not currently_
in new space.