Add Schedule::InsertBranch to fuse control flow graphs.

Add Schedule::InsertBranch to fuse control flow graphs.

R=jarin@chromium.org
TEST=cctest/test-schedule/TestScheduleInsertBranch

Committed: https://code.google.com/p/v8/source/detail?r=24876

[Jarin, 2014-10-24 13:21:19]

lgtm.

https://codereview.chromium.org/675983002/diff/20001/src/compiler/schedule.h
File src/compiler/schedule.h (right):

https://codereview.chromium.org/675983002/diff/20001/src/compiler/schedule.h#...
src/compiler/schedule.h:249: // Exposed publicly for testing only.
Could you then move this to the private section and create forwarding methods
that end with ForTesting? (So that it is really checked that we only use this
from tests.)

[Michael Starzinger, 2014-10-24 13:44:05]

Addressed comments. Landing.

https://codereview.chromium.org/675983002/diff/20001/src/compiler/schedule.h
File src/compiler/schedule.h (right):

https://codereview.chromium.org/675983002/diff/20001/src/compiler/schedule.h#...
src/compiler/schedule.h:249: // Exposed publicly for testing only.
On 2014/10/24 13:21:19, jarin wrote:
> Could you then move this to the private section and create forwarding methods
> that end with ForTesting? (So that it is really checked that we only use this
> from tests.)

Done. Good idea!

[Michael Starzinger, 2014-10-24 13:48:14]

Committed patchset #3 (id:10004) manually as 24876 (presubmit successful).