MIPS: Less aggressive polling when concurrently compiling for OSR.

MIPS: Less aggressive polling when concurrently compiling for OSR.

Port r16934 (b12e96b)

Original commit message:
Changes include:
- completed concurrent OSR tasks trigger a stack check interrupt.
- polling for completion is now guarded by a stack check.
- circular buffer for completed OSR tasks instead of list.

BUG=

[Yang, 2013-09-25 14:54:37]

https://codereview.chromium.org/24590002/diff/1/src/mips/builtins-mips.cc
File src/mips/builtins-mips.cc (right):

https://codereview.chromium.org/24590002/diff/1/src/mips/builtins-mips.cc#new...
src/mips/builtins-mips.cc:972: __ stop("check1");
You probably want to remove this :)

[Paul Lind, 2013-09-25 15:05:00]

https://codereview.chromium.org/24590002/diff/1/src/mips/builtins-mips.cc
File src/mips/builtins-mips.cc (right):

https://codereview.chromium.org/24590002/diff/1/src/mips/builtins-mips.cc#new...
src/mips/builtins-mips.cc:972: __ stop("check1");
You probably should remove this ... ;-)
 ... thanks Yang, you beat me to this!

[kilvadyb, 2013-09-25 15:14:28]

Thank you for catching it.

https://codereview.chromium.org/24590002/diff/1/src/mips/builtins-mips.cc
File src/mips/builtins-mips.cc (right):

https://codereview.chromium.org/24590002/diff/1/src/mips/builtins-mips.cc#new...
src/mips/builtins-mips.cc:972: __ stop("check1");
On 2013/09/25 14:54:38, Yang wrote:
> You probably want to remove this :)

Done.

[Paul Lind, 2013-09-25 16:25:31]

LGTM. I'll land this for you.

[Paul Lind, 2013-09-25 16:29:01]

Committed as r16947.