[turbofan] Include individual deferred block ranges in splintering.

[turbofan] Include individual deferred block ranges in splintering.

While we may have consecutive deferred blocks, they may be entered
from other blocks that are not predecessors of the first block. Same
for the last block and exiting. So the total set of live ranges within
the given set of blocks is the union of the individual in and out live
sets.

This is a performance bug, not a functional bug.

BUG=

Committed: https://crrev.com/5fc253a8057f65fa6866cc03bd116a4e76ed214d
Cr-Commit-Position: refs/heads/master@{#30564}

[Mircea Trofin, 2015-09-03 09:39:34]

The CQ bit was checked by mtrofin@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-03 09:39:41]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322703003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322703003/1

[commit-bot: I haz the power, 2015-09-03 09:39:43]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-09-03 09:39:43]

Dry run: No L-G-T-M from a valid reviewer yet. Only full committers are
accepted.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Mircea Trofin, 2015-09-03 09:49:37]

mtrofin@chromium.org changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org

[Mircea Trofin, 2015-09-03 12:55:59]

The CQ bit was checked by mtrofin@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-03 12:56:01]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322703003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322703003/1

[commit-bot: I haz the power, 2015-09-03 12:56:02]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-09-03 12:56:03]

Dry run: No L-G-T-M from a valid reviewer yet. Only full committers are
accepted.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Jarin, 2015-09-03 13:58:45]

lgtm

[Mircea Trofin, 2015-09-03 13:59:13]

The CQ bit was checked by mtrofin@chromium.org

[commit-bot: I haz the power, 2015-09-03 13:59:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322703003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322703003/1

[commit-bot: I haz the power, 2015-09-03 14:00:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-03 14:00:54]

Patchset 1 (id:??) landed as
https://crrev.com/5fc253a8057f65fa6866cc03bd116a4e76ed214d
Cr-Commit-Position: refs/heads/master@{#30564}